contract_name
stringlengths 1
61
| file_path
stringlengths 5
50.4k
| contract_address
stringlengths 42
42
| language
stringclasses 1
value | class_name
stringlengths 1
61
| class_code
stringlengths 4
330k
| class_documentation
stringlengths 0
29.1k
| class_documentation_type
stringclasses 6
values | func_name
stringlengths 0
62
| func_code
stringlengths 1
303k
| func_documentation
stringlengths 2
14.9k
| func_documentation_type
stringclasses 4
values | compiler_version
stringlengths 15
42
| license_type
stringclasses 14
values | swarm_source
stringlengths 0
71
| meta
dict | __index_level_0__
int64 0
60.4k
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | SafeMath | library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
} | /**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/ | NatSpecMultiLine | mod | function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
| /**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
3931,
4066
]
} | 3,907 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | SafeMath | library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
} | /**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/ | NatSpecMultiLine | mod | function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
| /**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
4546,
4717
]
} | 3,908 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | Address | library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies in extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call.value(amount)("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call.value(weiValue)(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | /**
* @dev Collection of functions related to the address type
*/ | NatSpecMultiLine | isContract | function isContract(address account) internal view returns (bool) {
// This method relies in extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
| /**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
606,
1033
]
} | 3,909 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | Address | library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies in extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call.value(amount)("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call.value(weiValue)(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | /**
* @dev Collection of functions related to the address type
*/ | NatSpecMultiLine | sendValue | function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call.value(amount)("");
require(success, "Address: unable to send value, recipient may have reverted");
}
| /**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
1963,
2362
]
} | 3,910 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | Address | library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies in extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call.value(amount)("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call.value(weiValue)(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | /**
* @dev Collection of functions related to the address type
*/ | NatSpecMultiLine | functionCall | function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
| /**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
3118,
3296
]
} | 3,911 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | Address | library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies in extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call.value(amount)("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call.value(weiValue)(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | /**
* @dev Collection of functions related to the address type
*/ | NatSpecMultiLine | functionCall | function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
| /**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
3521,
3722
]
} | 3,912 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | Address | library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies in extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call.value(amount)("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call.value(weiValue)(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | /**
* @dev Collection of functions related to the address type
*/ | NatSpecMultiLine | functionCallWithValue | function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
| /**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
4092,
4323
]
} | 3,913 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | Address | library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies in extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call.value(amount)("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call.value(weiValue)(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | /**
* @dev Collection of functions related to the address type
*/ | NatSpecMultiLine | functionCallWithValue | function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
| /**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
4574,
4895
]
} | 3,914 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | SafeERC20 | library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
} | /**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/ | NatSpecMultiLine | safeApprove | function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
| /**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
747,
1374
]
} | 3,915 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | SafeERC20 | library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
} | /**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/ | NatSpecMultiLine | _callOptionalReturn | function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
| /**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
2393,
3159
]
} | 3,916 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMTokenInterface | contract YAMTokenInterface is YAMTokenStorage, YAMGovernanceStorage {
/// @notice An event thats emitted when an account changes its delegate
event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate);
/// @notice An event thats emitted when a delegate account's vote balance changes
event DelegateVotesChanged(address indexed delegate, uint previousBalance, uint newBalance);
/**
* @notice Event emitted when tokens are rebased
*/
event Rebase(uint256 epoch, uint256 prevYamsScalingFactor, uint256 newYamsScalingFactor);
/*** Gov Events ***/
/**
* @notice Event emitted when pendingGov is changed
*/
event NewPendingGov(address oldPendingGov, address newPendingGov);
/**
* @notice Event emitted when gov is changed
*/
event NewGov(address oldGov, address newGov);
/**
* @notice Sets the rebaser contract
*/
event NewRebaser(address oldRebaser, address newRebaser);
/**
* @notice Sets the migrator contract
*/
event NewMigrator(address oldMigrator, address newMigrator);
/**
* @notice Sets the incentivizer contract
*/
event NewIncentivizer(address oldIncentivizer, address newIncentivizer);
/* - ERC20 Events - */
/**
* @notice EIP20 Transfer event
*/
event Transfer(address indexed from, address indexed to, uint amount);
/**
* @notice EIP20 Approval event
*/
event Approval(address indexed owner, address indexed spender, uint amount);
/* - Extra Events - */
/**
* @notice Tokens minted event
*/
event Mint(address to, uint256 amount);
// Public functions
function transfer(address to, uint256 value) external returns(bool);
function transferFrom(address from, address to, uint256 value) external returns(bool);
function balanceOf(address who) external view returns(uint256);
function balanceOfUnderlying(address who) external view returns(uint256);
function allowance(address owner_, address spender) external view returns(uint256);
function approve(address spender, uint256 value) external returns (bool);
function increaseAllowance(address spender, uint256 addedValue) external returns (bool);
function decreaseAllowance(address spender, uint256 subtractedValue) external returns (bool);
function maxScalingFactor() external view returns (uint256);
function yamToFragment(uint256 yam) external view returns (uint256);
function fragmentToYam(uint256 value) external view returns (uint256);
/* - Governance Functions - */
function getPriorVotes(address account, uint blockNumber) external view returns (uint256);
function delegateBySig(address delegatee, uint nonce, uint expiry, uint8 v, bytes32 r, bytes32 s) external;
function delegate(address delegatee) external;
function delegates(address delegator) external view returns (address);
function getCurrentVotes(address account) external view returns (uint256);
/* - Permissioned/Governance functions - */
function mint(address to, uint256 amount) external returns (bool);
function rebase(uint256 epoch, uint256 indexDelta, bool positive) external returns (uint256);
function _setRebaser(address rebaser_) external;
function _setIncentivizer(address incentivizer_) external;
function _setPendingGov(address pendingGov_) external;
function _acceptGov() external;
} | transfer | function transfer(address to, uint256 value) external returns(bool);
| // Public functions | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
1774,
1847
]
} | 3,917 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMTokenInterface | contract YAMTokenInterface is YAMTokenStorage, YAMGovernanceStorage {
/// @notice An event thats emitted when an account changes its delegate
event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate);
/// @notice An event thats emitted when a delegate account's vote balance changes
event DelegateVotesChanged(address indexed delegate, uint previousBalance, uint newBalance);
/**
* @notice Event emitted when tokens are rebased
*/
event Rebase(uint256 epoch, uint256 prevYamsScalingFactor, uint256 newYamsScalingFactor);
/*** Gov Events ***/
/**
* @notice Event emitted when pendingGov is changed
*/
event NewPendingGov(address oldPendingGov, address newPendingGov);
/**
* @notice Event emitted when gov is changed
*/
event NewGov(address oldGov, address newGov);
/**
* @notice Sets the rebaser contract
*/
event NewRebaser(address oldRebaser, address newRebaser);
/**
* @notice Sets the migrator contract
*/
event NewMigrator(address oldMigrator, address newMigrator);
/**
* @notice Sets the incentivizer contract
*/
event NewIncentivizer(address oldIncentivizer, address newIncentivizer);
/* - ERC20 Events - */
/**
* @notice EIP20 Transfer event
*/
event Transfer(address indexed from, address indexed to, uint amount);
/**
* @notice EIP20 Approval event
*/
event Approval(address indexed owner, address indexed spender, uint amount);
/* - Extra Events - */
/**
* @notice Tokens minted event
*/
event Mint(address to, uint256 amount);
// Public functions
function transfer(address to, uint256 value) external returns(bool);
function transferFrom(address from, address to, uint256 value) external returns(bool);
function balanceOf(address who) external view returns(uint256);
function balanceOfUnderlying(address who) external view returns(uint256);
function allowance(address owner_, address spender) external view returns(uint256);
function approve(address spender, uint256 value) external returns (bool);
function increaseAllowance(address spender, uint256 addedValue) external returns (bool);
function decreaseAllowance(address spender, uint256 subtractedValue) external returns (bool);
function maxScalingFactor() external view returns (uint256);
function yamToFragment(uint256 yam) external view returns (uint256);
function fragmentToYam(uint256 value) external view returns (uint256);
/* - Governance Functions - */
function getPriorVotes(address account, uint blockNumber) external view returns (uint256);
function delegateBySig(address delegatee, uint nonce, uint expiry, uint8 v, bytes32 r, bytes32 s) external;
function delegate(address delegatee) external;
function delegates(address delegator) external view returns (address);
function getCurrentVotes(address account) external view returns (uint256);
/* - Permissioned/Governance functions - */
function mint(address to, uint256 amount) external returns (bool);
function rebase(uint256 epoch, uint256 indexDelta, bool positive) external returns (uint256);
function _setRebaser(address rebaser_) external;
function _setIncentivizer(address incentivizer_) external;
function _setPendingGov(address pendingGov_) external;
function _acceptGov() external;
} | getPriorVotes | function getPriorVotes(address account, uint blockNumber) external view returns (uint256);
| /* - Governance Functions - */ | Comment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
2703,
2798
]
} | 3,918 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMTokenInterface | contract YAMTokenInterface is YAMTokenStorage, YAMGovernanceStorage {
/// @notice An event thats emitted when an account changes its delegate
event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate);
/// @notice An event thats emitted when a delegate account's vote balance changes
event DelegateVotesChanged(address indexed delegate, uint previousBalance, uint newBalance);
/**
* @notice Event emitted when tokens are rebased
*/
event Rebase(uint256 epoch, uint256 prevYamsScalingFactor, uint256 newYamsScalingFactor);
/*** Gov Events ***/
/**
* @notice Event emitted when pendingGov is changed
*/
event NewPendingGov(address oldPendingGov, address newPendingGov);
/**
* @notice Event emitted when gov is changed
*/
event NewGov(address oldGov, address newGov);
/**
* @notice Sets the rebaser contract
*/
event NewRebaser(address oldRebaser, address newRebaser);
/**
* @notice Sets the migrator contract
*/
event NewMigrator(address oldMigrator, address newMigrator);
/**
* @notice Sets the incentivizer contract
*/
event NewIncentivizer(address oldIncentivizer, address newIncentivizer);
/* - ERC20 Events - */
/**
* @notice EIP20 Transfer event
*/
event Transfer(address indexed from, address indexed to, uint amount);
/**
* @notice EIP20 Approval event
*/
event Approval(address indexed owner, address indexed spender, uint amount);
/* - Extra Events - */
/**
* @notice Tokens minted event
*/
event Mint(address to, uint256 amount);
// Public functions
function transfer(address to, uint256 value) external returns(bool);
function transferFrom(address from, address to, uint256 value) external returns(bool);
function balanceOf(address who) external view returns(uint256);
function balanceOfUnderlying(address who) external view returns(uint256);
function allowance(address owner_, address spender) external view returns(uint256);
function approve(address spender, uint256 value) external returns (bool);
function increaseAllowance(address spender, uint256 addedValue) external returns (bool);
function decreaseAllowance(address spender, uint256 subtractedValue) external returns (bool);
function maxScalingFactor() external view returns (uint256);
function yamToFragment(uint256 yam) external view returns (uint256);
function fragmentToYam(uint256 value) external view returns (uint256);
/* - Governance Functions - */
function getPriorVotes(address account, uint blockNumber) external view returns (uint256);
function delegateBySig(address delegatee, uint nonce, uint expiry, uint8 v, bytes32 r, bytes32 s) external;
function delegate(address delegatee) external;
function delegates(address delegator) external view returns (address);
function getCurrentVotes(address account) external view returns (uint256);
/* - Permissioned/Governance functions - */
function mint(address to, uint256 amount) external returns (bool);
function rebase(uint256 epoch, uint256 indexDelta, bool positive) external returns (uint256);
function _setRebaser(address rebaser_) external;
function _setIncentivizer(address incentivizer_) external;
function _setPendingGov(address pendingGov_) external;
function _acceptGov() external;
} | mint | function mint(address to, uint256 amount) external returns (bool);
| /* - Permissioned/Governance functions - */ | Comment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
3171,
3242
]
} | 3,919 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMGovernanceToken | contract YAMGovernanceToken is YAMTokenInterface {
/// @notice An event thats emitted when an account changes its delegate
event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate);
/// @notice An event thats emitted when a delegate account's vote balance changes
event DelegateVotesChanged(address indexed delegate, uint previousBalance, uint newBalance);
/**
* @notice Get delegatee for an address delegating
* @param delegator The address to get delegatee for
*/
function delegates(address delegator)
external
view
returns (address)
{
return _delegates[delegator];
}
/**
* @notice Delegate votes from `msg.sender` to `delegatee`
* @param delegatee The address to delegate votes to
*/
function delegate(address delegatee) external {
return _delegate(msg.sender, delegatee);
}
/**
* @notice Delegates votes from signatory to `delegatee`
* @param delegatee The address to delegate votes to
* @param nonce The contract state required to match the signature
* @param expiry The time at which to expire the signature
* @param v The recovery byte of the signature
* @param r Half of the ECDSA signature pair
* @param s Half of the ECDSA signature pair
*/
function delegateBySig(
address delegatee,
uint nonce,
uint expiry,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
bytes32 structHash = keccak256(
abi.encode(
DELEGATION_TYPEHASH,
delegatee,
nonce,
expiry
)
);
bytes32 digest = keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
structHash
)
);
address signatory = ecrecover(digest, v, r, s);
require(signatory != address(0), "YAM::delegateBySig: invalid signature");
require(nonce == nonces[signatory]++, "YAM::delegateBySig: invalid nonce");
require(now <= expiry, "YAM::delegateBySig: signature expired");
return _delegate(signatory, delegatee);
}
/**
* @notice Gets the current votes balance for `account`
* @param account The address to get votes balance
* @return The number of current votes for `account`
*/
function getCurrentVotes(address account)
external
view
returns (uint256)
{
uint32 nCheckpoints = numCheckpoints[account];
return nCheckpoints > 0 ? checkpoints[account][nCheckpoints - 1].votes : 0;
}
/**
* @notice Determine the prior number of votes for an account as of a block number
* @dev Block number must be a finalized block or else this function will revert to prevent misinformation.
* @param account The address of the account to check
* @param blockNumber The block number to get the vote balance at
* @return The number of votes the account had as of the given block
*/
function getPriorVotes(address account, uint blockNumber)
external
view
returns (uint256)
{
require(blockNumber < block.number, "YAM::getPriorVotes: not yet determined");
uint32 nCheckpoints = numCheckpoints[account];
if (nCheckpoints == 0) {
return 0;
}
// First check most recent balance
if (checkpoints[account][nCheckpoints - 1].fromBlock <= blockNumber) {
return checkpoints[account][nCheckpoints - 1].votes;
}
// Next check implicit zero balance
if (checkpoints[account][0].fromBlock > blockNumber) {
return 0;
}
uint32 lower = 0;
uint32 upper = nCheckpoints - 1;
while (upper > lower) {
uint32 center = upper - (upper - lower) / 2; // ceil, avoiding overflow
Checkpoint memory cp = checkpoints[account][center];
if (cp.fromBlock == blockNumber) {
return cp.votes;
} else if (cp.fromBlock < blockNumber) {
lower = center;
} else {
upper = center - 1;
}
}
return checkpoints[account][lower].votes;
}
function _delegate(address delegator, address delegatee)
internal
{
address currentDelegate = _delegates[delegator];
uint256 delegatorBalance = _yamBalances[delegator]; // balance of underlying YAMs (not scaled);
_delegates[delegator] = delegatee;
emit DelegateChanged(delegator, currentDelegate, delegatee);
_moveDelegates(currentDelegate, delegatee, delegatorBalance);
}
function _moveDelegates(address srcRep, address dstRep, uint256 amount) internal {
if (srcRep != dstRep && amount > 0) {
if (srcRep != address(0)) {
// decrease old representative
uint32 srcRepNum = numCheckpoints[srcRep];
uint256 srcRepOld = srcRepNum > 0 ? checkpoints[srcRep][srcRepNum - 1].votes : 0;
uint256 srcRepNew = srcRepOld.sub(amount);
_writeCheckpoint(srcRep, srcRepNum, srcRepOld, srcRepNew);
}
if (dstRep != address(0)) {
// increase new representative
uint32 dstRepNum = numCheckpoints[dstRep];
uint256 dstRepOld = dstRepNum > 0 ? checkpoints[dstRep][dstRepNum - 1].votes : 0;
uint256 dstRepNew = dstRepOld.add(amount);
_writeCheckpoint(dstRep, dstRepNum, dstRepOld, dstRepNew);
}
}
}
function _writeCheckpoint(
address delegatee,
uint32 nCheckpoints,
uint256 oldVotes,
uint256 newVotes
)
internal
{
uint32 blockNumber = safe32(block.number, "YAM::_writeCheckpoint: block number exceeds 32 bits");
if (nCheckpoints > 0 && checkpoints[delegatee][nCheckpoints - 1].fromBlock == blockNumber) {
checkpoints[delegatee][nCheckpoints - 1].votes = newVotes;
} else {
checkpoints[delegatee][nCheckpoints] = Checkpoint(blockNumber, newVotes);
numCheckpoints[delegatee] = nCheckpoints + 1;
}
emit DelegateVotesChanged(delegatee, oldVotes, newVotes);
}
function safe32(uint n, string memory errorMessage) internal pure returns (uint32) {
require(n < 2**32, errorMessage);
return uint32(n);
}
function getChainId() internal pure returns (uint) {
uint256 chainId;
assembly { chainId := chainid() }
return chainId;
}
} | /* Copyright 2020 Compound Labs, Inc.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ | Comment | delegates | function delegates(address delegator)
external
view
returns (address)
{
return _delegates[delegator];
}
| /**
* @notice Get delegatee for an address delegating
* @param delegator The address to get delegatee for
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
567,
721
]
} | 3,920 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMGovernanceToken | contract YAMGovernanceToken is YAMTokenInterface {
/// @notice An event thats emitted when an account changes its delegate
event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate);
/// @notice An event thats emitted when a delegate account's vote balance changes
event DelegateVotesChanged(address indexed delegate, uint previousBalance, uint newBalance);
/**
* @notice Get delegatee for an address delegating
* @param delegator The address to get delegatee for
*/
function delegates(address delegator)
external
view
returns (address)
{
return _delegates[delegator];
}
/**
* @notice Delegate votes from `msg.sender` to `delegatee`
* @param delegatee The address to delegate votes to
*/
function delegate(address delegatee) external {
return _delegate(msg.sender, delegatee);
}
/**
* @notice Delegates votes from signatory to `delegatee`
* @param delegatee The address to delegate votes to
* @param nonce The contract state required to match the signature
* @param expiry The time at which to expire the signature
* @param v The recovery byte of the signature
* @param r Half of the ECDSA signature pair
* @param s Half of the ECDSA signature pair
*/
function delegateBySig(
address delegatee,
uint nonce,
uint expiry,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
bytes32 structHash = keccak256(
abi.encode(
DELEGATION_TYPEHASH,
delegatee,
nonce,
expiry
)
);
bytes32 digest = keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
structHash
)
);
address signatory = ecrecover(digest, v, r, s);
require(signatory != address(0), "YAM::delegateBySig: invalid signature");
require(nonce == nonces[signatory]++, "YAM::delegateBySig: invalid nonce");
require(now <= expiry, "YAM::delegateBySig: signature expired");
return _delegate(signatory, delegatee);
}
/**
* @notice Gets the current votes balance for `account`
* @param account The address to get votes balance
* @return The number of current votes for `account`
*/
function getCurrentVotes(address account)
external
view
returns (uint256)
{
uint32 nCheckpoints = numCheckpoints[account];
return nCheckpoints > 0 ? checkpoints[account][nCheckpoints - 1].votes : 0;
}
/**
* @notice Determine the prior number of votes for an account as of a block number
* @dev Block number must be a finalized block or else this function will revert to prevent misinformation.
* @param account The address of the account to check
* @param blockNumber The block number to get the vote balance at
* @return The number of votes the account had as of the given block
*/
function getPriorVotes(address account, uint blockNumber)
external
view
returns (uint256)
{
require(blockNumber < block.number, "YAM::getPriorVotes: not yet determined");
uint32 nCheckpoints = numCheckpoints[account];
if (nCheckpoints == 0) {
return 0;
}
// First check most recent balance
if (checkpoints[account][nCheckpoints - 1].fromBlock <= blockNumber) {
return checkpoints[account][nCheckpoints - 1].votes;
}
// Next check implicit zero balance
if (checkpoints[account][0].fromBlock > blockNumber) {
return 0;
}
uint32 lower = 0;
uint32 upper = nCheckpoints - 1;
while (upper > lower) {
uint32 center = upper - (upper - lower) / 2; // ceil, avoiding overflow
Checkpoint memory cp = checkpoints[account][center];
if (cp.fromBlock == blockNumber) {
return cp.votes;
} else if (cp.fromBlock < blockNumber) {
lower = center;
} else {
upper = center - 1;
}
}
return checkpoints[account][lower].votes;
}
function _delegate(address delegator, address delegatee)
internal
{
address currentDelegate = _delegates[delegator];
uint256 delegatorBalance = _yamBalances[delegator]; // balance of underlying YAMs (not scaled);
_delegates[delegator] = delegatee;
emit DelegateChanged(delegator, currentDelegate, delegatee);
_moveDelegates(currentDelegate, delegatee, delegatorBalance);
}
function _moveDelegates(address srcRep, address dstRep, uint256 amount) internal {
if (srcRep != dstRep && amount > 0) {
if (srcRep != address(0)) {
// decrease old representative
uint32 srcRepNum = numCheckpoints[srcRep];
uint256 srcRepOld = srcRepNum > 0 ? checkpoints[srcRep][srcRepNum - 1].votes : 0;
uint256 srcRepNew = srcRepOld.sub(amount);
_writeCheckpoint(srcRep, srcRepNum, srcRepOld, srcRepNew);
}
if (dstRep != address(0)) {
// increase new representative
uint32 dstRepNum = numCheckpoints[dstRep];
uint256 dstRepOld = dstRepNum > 0 ? checkpoints[dstRep][dstRepNum - 1].votes : 0;
uint256 dstRepNew = dstRepOld.add(amount);
_writeCheckpoint(dstRep, dstRepNum, dstRepOld, dstRepNew);
}
}
}
function _writeCheckpoint(
address delegatee,
uint32 nCheckpoints,
uint256 oldVotes,
uint256 newVotes
)
internal
{
uint32 blockNumber = safe32(block.number, "YAM::_writeCheckpoint: block number exceeds 32 bits");
if (nCheckpoints > 0 && checkpoints[delegatee][nCheckpoints - 1].fromBlock == blockNumber) {
checkpoints[delegatee][nCheckpoints - 1].votes = newVotes;
} else {
checkpoints[delegatee][nCheckpoints] = Checkpoint(blockNumber, newVotes);
numCheckpoints[delegatee] = nCheckpoints + 1;
}
emit DelegateVotesChanged(delegatee, oldVotes, newVotes);
}
function safe32(uint n, string memory errorMessage) internal pure returns (uint32) {
require(n < 2**32, errorMessage);
return uint32(n);
}
function getChainId() internal pure returns (uint) {
uint256 chainId;
assembly { chainId := chainid() }
return chainId;
}
} | /* Copyright 2020 Compound Labs, Inc.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ | Comment | delegate | function delegate(address delegatee) external {
return _delegate(msg.sender, delegatee);
}
| /**
* @notice Delegate votes from `msg.sender` to `delegatee`
* @param delegatee The address to delegate votes to
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
860,
969
]
} | 3,921 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMGovernanceToken | contract YAMGovernanceToken is YAMTokenInterface {
/// @notice An event thats emitted when an account changes its delegate
event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate);
/// @notice An event thats emitted when a delegate account's vote balance changes
event DelegateVotesChanged(address indexed delegate, uint previousBalance, uint newBalance);
/**
* @notice Get delegatee for an address delegating
* @param delegator The address to get delegatee for
*/
function delegates(address delegator)
external
view
returns (address)
{
return _delegates[delegator];
}
/**
* @notice Delegate votes from `msg.sender` to `delegatee`
* @param delegatee The address to delegate votes to
*/
function delegate(address delegatee) external {
return _delegate(msg.sender, delegatee);
}
/**
* @notice Delegates votes from signatory to `delegatee`
* @param delegatee The address to delegate votes to
* @param nonce The contract state required to match the signature
* @param expiry The time at which to expire the signature
* @param v The recovery byte of the signature
* @param r Half of the ECDSA signature pair
* @param s Half of the ECDSA signature pair
*/
function delegateBySig(
address delegatee,
uint nonce,
uint expiry,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
bytes32 structHash = keccak256(
abi.encode(
DELEGATION_TYPEHASH,
delegatee,
nonce,
expiry
)
);
bytes32 digest = keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
structHash
)
);
address signatory = ecrecover(digest, v, r, s);
require(signatory != address(0), "YAM::delegateBySig: invalid signature");
require(nonce == nonces[signatory]++, "YAM::delegateBySig: invalid nonce");
require(now <= expiry, "YAM::delegateBySig: signature expired");
return _delegate(signatory, delegatee);
}
/**
* @notice Gets the current votes balance for `account`
* @param account The address to get votes balance
* @return The number of current votes for `account`
*/
function getCurrentVotes(address account)
external
view
returns (uint256)
{
uint32 nCheckpoints = numCheckpoints[account];
return nCheckpoints > 0 ? checkpoints[account][nCheckpoints - 1].votes : 0;
}
/**
* @notice Determine the prior number of votes for an account as of a block number
* @dev Block number must be a finalized block or else this function will revert to prevent misinformation.
* @param account The address of the account to check
* @param blockNumber The block number to get the vote balance at
* @return The number of votes the account had as of the given block
*/
function getPriorVotes(address account, uint blockNumber)
external
view
returns (uint256)
{
require(blockNumber < block.number, "YAM::getPriorVotes: not yet determined");
uint32 nCheckpoints = numCheckpoints[account];
if (nCheckpoints == 0) {
return 0;
}
// First check most recent balance
if (checkpoints[account][nCheckpoints - 1].fromBlock <= blockNumber) {
return checkpoints[account][nCheckpoints - 1].votes;
}
// Next check implicit zero balance
if (checkpoints[account][0].fromBlock > blockNumber) {
return 0;
}
uint32 lower = 0;
uint32 upper = nCheckpoints - 1;
while (upper > lower) {
uint32 center = upper - (upper - lower) / 2; // ceil, avoiding overflow
Checkpoint memory cp = checkpoints[account][center];
if (cp.fromBlock == blockNumber) {
return cp.votes;
} else if (cp.fromBlock < blockNumber) {
lower = center;
} else {
upper = center - 1;
}
}
return checkpoints[account][lower].votes;
}
function _delegate(address delegator, address delegatee)
internal
{
address currentDelegate = _delegates[delegator];
uint256 delegatorBalance = _yamBalances[delegator]; // balance of underlying YAMs (not scaled);
_delegates[delegator] = delegatee;
emit DelegateChanged(delegator, currentDelegate, delegatee);
_moveDelegates(currentDelegate, delegatee, delegatorBalance);
}
function _moveDelegates(address srcRep, address dstRep, uint256 amount) internal {
if (srcRep != dstRep && amount > 0) {
if (srcRep != address(0)) {
// decrease old representative
uint32 srcRepNum = numCheckpoints[srcRep];
uint256 srcRepOld = srcRepNum > 0 ? checkpoints[srcRep][srcRepNum - 1].votes : 0;
uint256 srcRepNew = srcRepOld.sub(amount);
_writeCheckpoint(srcRep, srcRepNum, srcRepOld, srcRepNew);
}
if (dstRep != address(0)) {
// increase new representative
uint32 dstRepNum = numCheckpoints[dstRep];
uint256 dstRepOld = dstRepNum > 0 ? checkpoints[dstRep][dstRepNum - 1].votes : 0;
uint256 dstRepNew = dstRepOld.add(amount);
_writeCheckpoint(dstRep, dstRepNum, dstRepOld, dstRepNew);
}
}
}
function _writeCheckpoint(
address delegatee,
uint32 nCheckpoints,
uint256 oldVotes,
uint256 newVotes
)
internal
{
uint32 blockNumber = safe32(block.number, "YAM::_writeCheckpoint: block number exceeds 32 bits");
if (nCheckpoints > 0 && checkpoints[delegatee][nCheckpoints - 1].fromBlock == blockNumber) {
checkpoints[delegatee][nCheckpoints - 1].votes = newVotes;
} else {
checkpoints[delegatee][nCheckpoints] = Checkpoint(blockNumber, newVotes);
numCheckpoints[delegatee] = nCheckpoints + 1;
}
emit DelegateVotesChanged(delegatee, oldVotes, newVotes);
}
function safe32(uint n, string memory errorMessage) internal pure returns (uint32) {
require(n < 2**32, errorMessage);
return uint32(n);
}
function getChainId() internal pure returns (uint) {
uint256 chainId;
assembly { chainId := chainid() }
return chainId;
}
} | /* Copyright 2020 Compound Labs, Inc.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ | Comment | delegateBySig | function delegateBySig(
address delegatee,
uint nonce,
uint expiry,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
bytes32 structHash = keccak256(
abi.encode(
DELEGATION_TYPEHASH,
delegatee,
nonce,
expiry
)
);
bytes32 digest = keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
structHash
)
);
address signatory = ecrecover(digest, v, r, s);
require(signatory != address(0), "YAM::delegateBySig: invalid signature");
require(nonce == nonces[signatory]++, "YAM::delegateBySig: invalid nonce");
require(now <= expiry, "YAM::delegateBySig: signature expired");
return _delegate(signatory, delegatee);
}
| /**
* @notice Delegates votes from signatory to `delegatee`
* @param delegatee The address to delegate votes to
* @param nonce The contract state required to match the signature
* @param expiry The time at which to expire the signature
* @param v The recovery byte of the signature
* @param r Half of the ECDSA signature pair
* @param s Half of the ECDSA signature pair
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
1398,
2340
]
} | 3,922 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMGovernanceToken | contract YAMGovernanceToken is YAMTokenInterface {
/// @notice An event thats emitted when an account changes its delegate
event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate);
/// @notice An event thats emitted when a delegate account's vote balance changes
event DelegateVotesChanged(address indexed delegate, uint previousBalance, uint newBalance);
/**
* @notice Get delegatee for an address delegating
* @param delegator The address to get delegatee for
*/
function delegates(address delegator)
external
view
returns (address)
{
return _delegates[delegator];
}
/**
* @notice Delegate votes from `msg.sender` to `delegatee`
* @param delegatee The address to delegate votes to
*/
function delegate(address delegatee) external {
return _delegate(msg.sender, delegatee);
}
/**
* @notice Delegates votes from signatory to `delegatee`
* @param delegatee The address to delegate votes to
* @param nonce The contract state required to match the signature
* @param expiry The time at which to expire the signature
* @param v The recovery byte of the signature
* @param r Half of the ECDSA signature pair
* @param s Half of the ECDSA signature pair
*/
function delegateBySig(
address delegatee,
uint nonce,
uint expiry,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
bytes32 structHash = keccak256(
abi.encode(
DELEGATION_TYPEHASH,
delegatee,
nonce,
expiry
)
);
bytes32 digest = keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
structHash
)
);
address signatory = ecrecover(digest, v, r, s);
require(signatory != address(0), "YAM::delegateBySig: invalid signature");
require(nonce == nonces[signatory]++, "YAM::delegateBySig: invalid nonce");
require(now <= expiry, "YAM::delegateBySig: signature expired");
return _delegate(signatory, delegatee);
}
/**
* @notice Gets the current votes balance for `account`
* @param account The address to get votes balance
* @return The number of current votes for `account`
*/
function getCurrentVotes(address account)
external
view
returns (uint256)
{
uint32 nCheckpoints = numCheckpoints[account];
return nCheckpoints > 0 ? checkpoints[account][nCheckpoints - 1].votes : 0;
}
/**
* @notice Determine the prior number of votes for an account as of a block number
* @dev Block number must be a finalized block or else this function will revert to prevent misinformation.
* @param account The address of the account to check
* @param blockNumber The block number to get the vote balance at
* @return The number of votes the account had as of the given block
*/
function getPriorVotes(address account, uint blockNumber)
external
view
returns (uint256)
{
require(blockNumber < block.number, "YAM::getPriorVotes: not yet determined");
uint32 nCheckpoints = numCheckpoints[account];
if (nCheckpoints == 0) {
return 0;
}
// First check most recent balance
if (checkpoints[account][nCheckpoints - 1].fromBlock <= blockNumber) {
return checkpoints[account][nCheckpoints - 1].votes;
}
// Next check implicit zero balance
if (checkpoints[account][0].fromBlock > blockNumber) {
return 0;
}
uint32 lower = 0;
uint32 upper = nCheckpoints - 1;
while (upper > lower) {
uint32 center = upper - (upper - lower) / 2; // ceil, avoiding overflow
Checkpoint memory cp = checkpoints[account][center];
if (cp.fromBlock == blockNumber) {
return cp.votes;
} else if (cp.fromBlock < blockNumber) {
lower = center;
} else {
upper = center - 1;
}
}
return checkpoints[account][lower].votes;
}
function _delegate(address delegator, address delegatee)
internal
{
address currentDelegate = _delegates[delegator];
uint256 delegatorBalance = _yamBalances[delegator]; // balance of underlying YAMs (not scaled);
_delegates[delegator] = delegatee;
emit DelegateChanged(delegator, currentDelegate, delegatee);
_moveDelegates(currentDelegate, delegatee, delegatorBalance);
}
function _moveDelegates(address srcRep, address dstRep, uint256 amount) internal {
if (srcRep != dstRep && amount > 0) {
if (srcRep != address(0)) {
// decrease old representative
uint32 srcRepNum = numCheckpoints[srcRep];
uint256 srcRepOld = srcRepNum > 0 ? checkpoints[srcRep][srcRepNum - 1].votes : 0;
uint256 srcRepNew = srcRepOld.sub(amount);
_writeCheckpoint(srcRep, srcRepNum, srcRepOld, srcRepNew);
}
if (dstRep != address(0)) {
// increase new representative
uint32 dstRepNum = numCheckpoints[dstRep];
uint256 dstRepOld = dstRepNum > 0 ? checkpoints[dstRep][dstRepNum - 1].votes : 0;
uint256 dstRepNew = dstRepOld.add(amount);
_writeCheckpoint(dstRep, dstRepNum, dstRepOld, dstRepNew);
}
}
}
function _writeCheckpoint(
address delegatee,
uint32 nCheckpoints,
uint256 oldVotes,
uint256 newVotes
)
internal
{
uint32 blockNumber = safe32(block.number, "YAM::_writeCheckpoint: block number exceeds 32 bits");
if (nCheckpoints > 0 && checkpoints[delegatee][nCheckpoints - 1].fromBlock == blockNumber) {
checkpoints[delegatee][nCheckpoints - 1].votes = newVotes;
} else {
checkpoints[delegatee][nCheckpoints] = Checkpoint(blockNumber, newVotes);
numCheckpoints[delegatee] = nCheckpoints + 1;
}
emit DelegateVotesChanged(delegatee, oldVotes, newVotes);
}
function safe32(uint n, string memory errorMessage) internal pure returns (uint32) {
require(n < 2**32, errorMessage);
return uint32(n);
}
function getChainId() internal pure returns (uint) {
uint256 chainId;
assembly { chainId := chainid() }
return chainId;
}
} | /* Copyright 2020 Compound Labs, Inc.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ | Comment | getCurrentVotes | function getCurrentVotes(address account)
external
view
returns (uint256)
{
uint32 nCheckpoints = numCheckpoints[account];
return nCheckpoints > 0 ? checkpoints[account][nCheckpoints - 1].votes : 0;
}
| /**
* @notice Gets the current votes balance for `account`
* @param account The address to get votes balance
* @return The number of current votes for `account`
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
2536,
2796
]
} | 3,923 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMGovernanceToken | contract YAMGovernanceToken is YAMTokenInterface {
/// @notice An event thats emitted when an account changes its delegate
event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate);
/// @notice An event thats emitted when a delegate account's vote balance changes
event DelegateVotesChanged(address indexed delegate, uint previousBalance, uint newBalance);
/**
* @notice Get delegatee for an address delegating
* @param delegator The address to get delegatee for
*/
function delegates(address delegator)
external
view
returns (address)
{
return _delegates[delegator];
}
/**
* @notice Delegate votes from `msg.sender` to `delegatee`
* @param delegatee The address to delegate votes to
*/
function delegate(address delegatee) external {
return _delegate(msg.sender, delegatee);
}
/**
* @notice Delegates votes from signatory to `delegatee`
* @param delegatee The address to delegate votes to
* @param nonce The contract state required to match the signature
* @param expiry The time at which to expire the signature
* @param v The recovery byte of the signature
* @param r Half of the ECDSA signature pair
* @param s Half of the ECDSA signature pair
*/
function delegateBySig(
address delegatee,
uint nonce,
uint expiry,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
bytes32 structHash = keccak256(
abi.encode(
DELEGATION_TYPEHASH,
delegatee,
nonce,
expiry
)
);
bytes32 digest = keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
structHash
)
);
address signatory = ecrecover(digest, v, r, s);
require(signatory != address(0), "YAM::delegateBySig: invalid signature");
require(nonce == nonces[signatory]++, "YAM::delegateBySig: invalid nonce");
require(now <= expiry, "YAM::delegateBySig: signature expired");
return _delegate(signatory, delegatee);
}
/**
* @notice Gets the current votes balance for `account`
* @param account The address to get votes balance
* @return The number of current votes for `account`
*/
function getCurrentVotes(address account)
external
view
returns (uint256)
{
uint32 nCheckpoints = numCheckpoints[account];
return nCheckpoints > 0 ? checkpoints[account][nCheckpoints - 1].votes : 0;
}
/**
* @notice Determine the prior number of votes for an account as of a block number
* @dev Block number must be a finalized block or else this function will revert to prevent misinformation.
* @param account The address of the account to check
* @param blockNumber The block number to get the vote balance at
* @return The number of votes the account had as of the given block
*/
function getPriorVotes(address account, uint blockNumber)
external
view
returns (uint256)
{
require(blockNumber < block.number, "YAM::getPriorVotes: not yet determined");
uint32 nCheckpoints = numCheckpoints[account];
if (nCheckpoints == 0) {
return 0;
}
// First check most recent balance
if (checkpoints[account][nCheckpoints - 1].fromBlock <= blockNumber) {
return checkpoints[account][nCheckpoints - 1].votes;
}
// Next check implicit zero balance
if (checkpoints[account][0].fromBlock > blockNumber) {
return 0;
}
uint32 lower = 0;
uint32 upper = nCheckpoints - 1;
while (upper > lower) {
uint32 center = upper - (upper - lower) / 2; // ceil, avoiding overflow
Checkpoint memory cp = checkpoints[account][center];
if (cp.fromBlock == blockNumber) {
return cp.votes;
} else if (cp.fromBlock < blockNumber) {
lower = center;
} else {
upper = center - 1;
}
}
return checkpoints[account][lower].votes;
}
function _delegate(address delegator, address delegatee)
internal
{
address currentDelegate = _delegates[delegator];
uint256 delegatorBalance = _yamBalances[delegator]; // balance of underlying YAMs (not scaled);
_delegates[delegator] = delegatee;
emit DelegateChanged(delegator, currentDelegate, delegatee);
_moveDelegates(currentDelegate, delegatee, delegatorBalance);
}
function _moveDelegates(address srcRep, address dstRep, uint256 amount) internal {
if (srcRep != dstRep && amount > 0) {
if (srcRep != address(0)) {
// decrease old representative
uint32 srcRepNum = numCheckpoints[srcRep];
uint256 srcRepOld = srcRepNum > 0 ? checkpoints[srcRep][srcRepNum - 1].votes : 0;
uint256 srcRepNew = srcRepOld.sub(amount);
_writeCheckpoint(srcRep, srcRepNum, srcRepOld, srcRepNew);
}
if (dstRep != address(0)) {
// increase new representative
uint32 dstRepNum = numCheckpoints[dstRep];
uint256 dstRepOld = dstRepNum > 0 ? checkpoints[dstRep][dstRepNum - 1].votes : 0;
uint256 dstRepNew = dstRepOld.add(amount);
_writeCheckpoint(dstRep, dstRepNum, dstRepOld, dstRepNew);
}
}
}
function _writeCheckpoint(
address delegatee,
uint32 nCheckpoints,
uint256 oldVotes,
uint256 newVotes
)
internal
{
uint32 blockNumber = safe32(block.number, "YAM::_writeCheckpoint: block number exceeds 32 bits");
if (nCheckpoints > 0 && checkpoints[delegatee][nCheckpoints - 1].fromBlock == blockNumber) {
checkpoints[delegatee][nCheckpoints - 1].votes = newVotes;
} else {
checkpoints[delegatee][nCheckpoints] = Checkpoint(blockNumber, newVotes);
numCheckpoints[delegatee] = nCheckpoints + 1;
}
emit DelegateVotesChanged(delegatee, oldVotes, newVotes);
}
function safe32(uint n, string memory errorMessage) internal pure returns (uint32) {
require(n < 2**32, errorMessage);
return uint32(n);
}
function getChainId() internal pure returns (uint) {
uint256 chainId;
assembly { chainId := chainid() }
return chainId;
}
} | /* Copyright 2020 Compound Labs, Inc.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ | Comment | getPriorVotes | function getPriorVotes(address account, uint blockNumber)
external
view
returns (uint256)
{
require(blockNumber < block.number, "YAM::getPriorVotes: not yet determined");
uint32 nCheckpoints = numCheckpoints[account];
if (nCheckpoints == 0) {
return 0;
}
// First check most recent balance
if (checkpoints[account][nCheckpoints - 1].fromBlock <= blockNumber) {
return checkpoints[account][nCheckpoints - 1].votes;
}
// Next check implicit zero balance
if (checkpoints[account][0].fromBlock > blockNumber) {
return 0;
}
uint32 lower = 0;
uint32 upper = nCheckpoints - 1;
while (upper > lower) {
uint32 center = upper - (upper - lower) / 2; // ceil, avoiding overflow
Checkpoint memory cp = checkpoints[account][center];
if (cp.fromBlock == blockNumber) {
return cp.votes;
} else if (cp.fromBlock < blockNumber) {
lower = center;
} else {
upper = center - 1;
}
}
return checkpoints[account][lower].votes;
}
| /**
* @notice Determine the prior number of votes for an account as of a block number
* @dev Block number must be a finalized block or else this function will revert to prevent misinformation.
* @param account The address of the account to check
* @param blockNumber The block number to get the vote balance at
* @return The number of votes the account had as of the given block
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
3222,
4479
]
} | 3,924 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMToken | contract YAMToken is YAMGovernanceToken {
// Modifiers
modifier onlyGov() {
require(msg.sender == gov);
_;
}
modifier onlyRebaser() {
require(msg.sender == rebaser);
_;
}
modifier onlyMinter() {
require(
msg.sender == rebaser
|| msg.sender == gov
|| msg.sender == incentivizer
|| msg.sender == migrator,
"not minter"
);
_;
}
modifier validRecipient(address to) {
require(to != address(0x0));
require(to != address(this));
_;
}
function initialize(
string memory name_,
string memory symbol_,
uint8 decimals_
)
public
{
require(yamsScalingFactor == 0, "already initialized");
name = name_;
symbol = symbol_;
decimals = decimals_;
}
/**
* @notice Computes the current max scaling factor
*/
function maxScalingFactor()
external
view
returns (uint256)
{
return _maxScalingFactor();
}
function _maxScalingFactor()
internal
view
returns (uint256)
{
// scaling factor can only go up to 2**256-1 = initSupply * yamsScalingFactor
// this is used to check if yamsScalingFactor will be too high to compute balances when rebasing.
return uint256(-1) / initSupply;
}
/**
* @notice Mints new tokens, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mint(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mint(to, amount);
return true;
}
function _mint(address to, uint256 amount)
internal
{
if (msg.sender == migrator) {
// migrator directly uses v2 balance for the amount
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
} else {
// increase totalSupply
totalSupply = totalSupply.add(amount);
// get underlying value
uint256 yamValue = _fragmentToYam(amount);
// increase initSupply
initSupply = initSupply.add(yamValue);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(yamValue);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], yamValue);
emit Mint(to, amount);
emit Transfer(address(0), to, amount);
}
}
/**
* @notice Mints new tokens using underlying amount, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mintUnderlying(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mintUnderlying(to, amount);
return true;
}
function _mintUnderlying(address to, uint256 amount)
internal
{
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
}
/**
* @dev Transfer underlying balance to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transferUnderlying(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(value);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(value);
emit Transfer(msg.sender, to, _yamToFragment(value));
_moveDelegates(_delegates[msg.sender], _delegates[to], value);
return true;
}
/* - ERC20 functionality - */
/**
* @dev Transfer tokens to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transfer(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// underlying balance is stored in yams, so divide by current scaling factor
// note, this means as scaling factor grows, dust will be untransferrable.
// minimum transfer value == yamsScalingFactor / 1e24;
// get amount in underlying
uint256 yamValue = _fragmentToYam(value);
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(yamValue);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(msg.sender, to, value);
_moveDelegates(_delegates[msg.sender], _delegates[to], yamValue);
return true;
}
/**
* @dev Transfer tokens from one address to another.
* @param from The address you want to send tokens from.
* @param to The address you want to transfer to.
* @param value The amount of tokens to be transferred.
*/
function transferFrom(address from, address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// decrease allowance
_allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value);
// get value in yams
uint256 yamValue = _fragmentToYam(value);
// sub from from
_yamBalances[from] = _yamBalances[from].sub(yamValue);
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(from, to, value);
_moveDelegates(_delegates[from], _delegates[to], yamValue);
return true;
}
/**
* @param who The address to query.
* @return The balance of the specified address.
*/
function balanceOf(address who)
external
view
returns (uint256)
{
return _yamToFragment(_yamBalances[who]);
}
/** @notice Currently returns the internal storage amount
* @param who The address to query.
* @return The underlying balance of the specified address.
*/
function balanceOfUnderlying(address who)
external
view
returns (uint256)
{
return _yamBalances[who];
}
/**
* @dev Function to check the amount of tokens that an owner has allowed to a spender.
* @param owner_ The address which owns the funds.
* @param spender The address which will spend the funds.
* @return The number of tokens still available for the spender.
*/
function allowance(address owner_, address spender)
external
view
returns (uint256)
{
return _allowedFragments[owner_][spender];
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of
* msg.sender. This method is included for ERC20 compatibility.
* increaseAllowance and decreaseAllowance should be used instead.
* Changing an allowance with this method brings the risk that someone may transfer both
* the old and the new allowance - if they are both greater than zero - if a transfer
* transaction is mined before the later approve() call is mined.
*
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner has allowed to a spender.
* This method should be used instead of approve() to avoid the double approval vulnerability
* described above.
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] =
_allowedFragments[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner has allowed to a spender.
*
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
external
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
// --- Approve by signature ---
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
require(now <= deadline, "YAM/permit-expired");
bytes32 digest =
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
value,
nonces[owner]++,
deadline
)
)
)
);
require(owner != address(0), "YAM/invalid-address-0");
require(owner == ecrecover(digest, v, r, s), "YAM/invalid-permit");
_allowedFragments[owner][spender] = value;
emit Approval(owner, spender, value);
}
/* - Governance Functions - */
/** @notice sets the rebaser
* @param rebaser_ The address of the rebaser contract to use for authentication.
*/
function _setRebaser(address rebaser_)
external
onlyGov
{
address oldRebaser = rebaser;
rebaser = rebaser_;
emit NewRebaser(oldRebaser, rebaser_);
}
/** @notice sets the migrator
* @param migrator_ The address of the migrator contract to use for authentication.
*/
function _setMigrator(address migrator_)
external
onlyGov
{
address oldMigrator = migrator_;
migrator = migrator_;
emit NewMigrator(oldMigrator, migrator_);
}
/** @notice sets the incentivizer
* @param incentivizer_ The address of the rebaser contract to use for authentication.
*/
function _setIncentivizer(address incentivizer_)
external
onlyGov
{
address oldIncentivizer = incentivizer;
incentivizer = incentivizer_;
emit NewIncentivizer(oldIncentivizer, incentivizer_);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the rebaser contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice allows governance to assign delegate to self
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
function assignSelfDelegate(address nonvotingContract)
external
onlyGov
{
address delegate = _delegates[nonvotingContract];
require( delegate == address(0), "!address(0)" );
// assigns delegate to self only
_delegate(nonvotingContract, nonvotingContract);
}
/* - Extras - */
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetRate) / targetRate
* and targetRate is CpiOracleRate / baseCpi
*/
function rebase(
uint256 epoch,
uint256 indexDelta,
bool positive
)
external
onlyRebaser
returns (uint256)
{
// no change
if (indexDelta == 0) {
emit Rebase(epoch, yamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
// for events
uint256 prevYamsScalingFactor = yamsScalingFactor;
if (!positive) {
// negative rebase, decrease scaling factor
yamsScalingFactor = yamsScalingFactor.mul(BASE.sub(indexDelta)).div(BASE);
} else {
// positive reabse, increase scaling factor
uint256 newScalingFactor = yamsScalingFactor.mul(BASE.add(indexDelta)).div(BASE);
if (newScalingFactor < _maxScalingFactor()) {
yamsScalingFactor = newScalingFactor;
} else {
yamsScalingFactor = _maxScalingFactor();
}
}
// update total supply, correctly
totalSupply = _yamToFragment(initSupply);
emit Rebase(epoch, prevYamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
function yamToFragment(uint256 yam)
external
view
returns (uint256)
{
return _yamToFragment(yam);
}
function fragmentToYam(uint256 value)
external
view
returns (uint256)
{
return _fragmentToYam(value);
}
function _yamToFragment(uint256 yam)
internal
view
returns (uint256)
{
return yam.mul(yamsScalingFactor).div(internalDecimals);
}
function _fragmentToYam(uint256 value)
internal
view
returns (uint256)
{
return value.mul(internalDecimals).div(yamsScalingFactor);
}
// Rescue tokens
function rescueTokens(
address token,
address to,
uint256 amount
)
external
onlyGov
returns (bool)
{
// transfer to
SafeERC20.safeTransfer(IERC20(token), to, amount);
return true;
}
} | maxScalingFactor | function maxScalingFactor()
external
view
returns (uint256)
{
return _maxScalingFactor();
}
| /**
* @notice Computes the current max scaling factor
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
1008,
1150
]
} | 3,925 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMToken | contract YAMToken is YAMGovernanceToken {
// Modifiers
modifier onlyGov() {
require(msg.sender == gov);
_;
}
modifier onlyRebaser() {
require(msg.sender == rebaser);
_;
}
modifier onlyMinter() {
require(
msg.sender == rebaser
|| msg.sender == gov
|| msg.sender == incentivizer
|| msg.sender == migrator,
"not minter"
);
_;
}
modifier validRecipient(address to) {
require(to != address(0x0));
require(to != address(this));
_;
}
function initialize(
string memory name_,
string memory symbol_,
uint8 decimals_
)
public
{
require(yamsScalingFactor == 0, "already initialized");
name = name_;
symbol = symbol_;
decimals = decimals_;
}
/**
* @notice Computes the current max scaling factor
*/
function maxScalingFactor()
external
view
returns (uint256)
{
return _maxScalingFactor();
}
function _maxScalingFactor()
internal
view
returns (uint256)
{
// scaling factor can only go up to 2**256-1 = initSupply * yamsScalingFactor
// this is used to check if yamsScalingFactor will be too high to compute balances when rebasing.
return uint256(-1) / initSupply;
}
/**
* @notice Mints new tokens, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mint(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mint(to, amount);
return true;
}
function _mint(address to, uint256 amount)
internal
{
if (msg.sender == migrator) {
// migrator directly uses v2 balance for the amount
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
} else {
// increase totalSupply
totalSupply = totalSupply.add(amount);
// get underlying value
uint256 yamValue = _fragmentToYam(amount);
// increase initSupply
initSupply = initSupply.add(yamValue);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(yamValue);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], yamValue);
emit Mint(to, amount);
emit Transfer(address(0), to, amount);
}
}
/**
* @notice Mints new tokens using underlying amount, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mintUnderlying(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mintUnderlying(to, amount);
return true;
}
function _mintUnderlying(address to, uint256 amount)
internal
{
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
}
/**
* @dev Transfer underlying balance to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transferUnderlying(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(value);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(value);
emit Transfer(msg.sender, to, _yamToFragment(value));
_moveDelegates(_delegates[msg.sender], _delegates[to], value);
return true;
}
/* - ERC20 functionality - */
/**
* @dev Transfer tokens to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transfer(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// underlying balance is stored in yams, so divide by current scaling factor
// note, this means as scaling factor grows, dust will be untransferrable.
// minimum transfer value == yamsScalingFactor / 1e24;
// get amount in underlying
uint256 yamValue = _fragmentToYam(value);
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(yamValue);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(msg.sender, to, value);
_moveDelegates(_delegates[msg.sender], _delegates[to], yamValue);
return true;
}
/**
* @dev Transfer tokens from one address to another.
* @param from The address you want to send tokens from.
* @param to The address you want to transfer to.
* @param value The amount of tokens to be transferred.
*/
function transferFrom(address from, address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// decrease allowance
_allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value);
// get value in yams
uint256 yamValue = _fragmentToYam(value);
// sub from from
_yamBalances[from] = _yamBalances[from].sub(yamValue);
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(from, to, value);
_moveDelegates(_delegates[from], _delegates[to], yamValue);
return true;
}
/**
* @param who The address to query.
* @return The balance of the specified address.
*/
function balanceOf(address who)
external
view
returns (uint256)
{
return _yamToFragment(_yamBalances[who]);
}
/** @notice Currently returns the internal storage amount
* @param who The address to query.
* @return The underlying balance of the specified address.
*/
function balanceOfUnderlying(address who)
external
view
returns (uint256)
{
return _yamBalances[who];
}
/**
* @dev Function to check the amount of tokens that an owner has allowed to a spender.
* @param owner_ The address which owns the funds.
* @param spender The address which will spend the funds.
* @return The number of tokens still available for the spender.
*/
function allowance(address owner_, address spender)
external
view
returns (uint256)
{
return _allowedFragments[owner_][spender];
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of
* msg.sender. This method is included for ERC20 compatibility.
* increaseAllowance and decreaseAllowance should be used instead.
* Changing an allowance with this method brings the risk that someone may transfer both
* the old and the new allowance - if they are both greater than zero - if a transfer
* transaction is mined before the later approve() call is mined.
*
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner has allowed to a spender.
* This method should be used instead of approve() to avoid the double approval vulnerability
* described above.
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] =
_allowedFragments[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner has allowed to a spender.
*
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
external
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
// --- Approve by signature ---
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
require(now <= deadline, "YAM/permit-expired");
bytes32 digest =
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
value,
nonces[owner]++,
deadline
)
)
)
);
require(owner != address(0), "YAM/invalid-address-0");
require(owner == ecrecover(digest, v, r, s), "YAM/invalid-permit");
_allowedFragments[owner][spender] = value;
emit Approval(owner, spender, value);
}
/* - Governance Functions - */
/** @notice sets the rebaser
* @param rebaser_ The address of the rebaser contract to use for authentication.
*/
function _setRebaser(address rebaser_)
external
onlyGov
{
address oldRebaser = rebaser;
rebaser = rebaser_;
emit NewRebaser(oldRebaser, rebaser_);
}
/** @notice sets the migrator
* @param migrator_ The address of the migrator contract to use for authentication.
*/
function _setMigrator(address migrator_)
external
onlyGov
{
address oldMigrator = migrator_;
migrator = migrator_;
emit NewMigrator(oldMigrator, migrator_);
}
/** @notice sets the incentivizer
* @param incentivizer_ The address of the rebaser contract to use for authentication.
*/
function _setIncentivizer(address incentivizer_)
external
onlyGov
{
address oldIncentivizer = incentivizer;
incentivizer = incentivizer_;
emit NewIncentivizer(oldIncentivizer, incentivizer_);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the rebaser contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice allows governance to assign delegate to self
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
function assignSelfDelegate(address nonvotingContract)
external
onlyGov
{
address delegate = _delegates[nonvotingContract];
require( delegate == address(0), "!address(0)" );
// assigns delegate to self only
_delegate(nonvotingContract, nonvotingContract);
}
/* - Extras - */
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetRate) / targetRate
* and targetRate is CpiOracleRate / baseCpi
*/
function rebase(
uint256 epoch,
uint256 indexDelta,
bool positive
)
external
onlyRebaser
returns (uint256)
{
// no change
if (indexDelta == 0) {
emit Rebase(epoch, yamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
// for events
uint256 prevYamsScalingFactor = yamsScalingFactor;
if (!positive) {
// negative rebase, decrease scaling factor
yamsScalingFactor = yamsScalingFactor.mul(BASE.sub(indexDelta)).div(BASE);
} else {
// positive reabse, increase scaling factor
uint256 newScalingFactor = yamsScalingFactor.mul(BASE.add(indexDelta)).div(BASE);
if (newScalingFactor < _maxScalingFactor()) {
yamsScalingFactor = newScalingFactor;
} else {
yamsScalingFactor = _maxScalingFactor();
}
}
// update total supply, correctly
totalSupply = _yamToFragment(initSupply);
emit Rebase(epoch, prevYamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
function yamToFragment(uint256 yam)
external
view
returns (uint256)
{
return _yamToFragment(yam);
}
function fragmentToYam(uint256 value)
external
view
returns (uint256)
{
return _fragmentToYam(value);
}
function _yamToFragment(uint256 yam)
internal
view
returns (uint256)
{
return yam.mul(yamsScalingFactor).div(internalDecimals);
}
function _fragmentToYam(uint256 value)
internal
view
returns (uint256)
{
return value.mul(internalDecimals).div(yamsScalingFactor);
}
// Rescue tokens
function rescueTokens(
address token,
address to,
uint256 amount
)
external
onlyGov
returns (bool)
{
// transfer to
SafeERC20.safeTransfer(IERC20(token), to, amount);
return true;
}
} | mint | function mint(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mint(to, amount);
return true;
}
| /**
* @notice Mints new tokens, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
1648,
1820
]
} | 3,926 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMToken | contract YAMToken is YAMGovernanceToken {
// Modifiers
modifier onlyGov() {
require(msg.sender == gov);
_;
}
modifier onlyRebaser() {
require(msg.sender == rebaser);
_;
}
modifier onlyMinter() {
require(
msg.sender == rebaser
|| msg.sender == gov
|| msg.sender == incentivizer
|| msg.sender == migrator,
"not minter"
);
_;
}
modifier validRecipient(address to) {
require(to != address(0x0));
require(to != address(this));
_;
}
function initialize(
string memory name_,
string memory symbol_,
uint8 decimals_
)
public
{
require(yamsScalingFactor == 0, "already initialized");
name = name_;
symbol = symbol_;
decimals = decimals_;
}
/**
* @notice Computes the current max scaling factor
*/
function maxScalingFactor()
external
view
returns (uint256)
{
return _maxScalingFactor();
}
function _maxScalingFactor()
internal
view
returns (uint256)
{
// scaling factor can only go up to 2**256-1 = initSupply * yamsScalingFactor
// this is used to check if yamsScalingFactor will be too high to compute balances when rebasing.
return uint256(-1) / initSupply;
}
/**
* @notice Mints new tokens, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mint(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mint(to, amount);
return true;
}
function _mint(address to, uint256 amount)
internal
{
if (msg.sender == migrator) {
// migrator directly uses v2 balance for the amount
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
} else {
// increase totalSupply
totalSupply = totalSupply.add(amount);
// get underlying value
uint256 yamValue = _fragmentToYam(amount);
// increase initSupply
initSupply = initSupply.add(yamValue);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(yamValue);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], yamValue);
emit Mint(to, amount);
emit Transfer(address(0), to, amount);
}
}
/**
* @notice Mints new tokens using underlying amount, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mintUnderlying(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mintUnderlying(to, amount);
return true;
}
function _mintUnderlying(address to, uint256 amount)
internal
{
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
}
/**
* @dev Transfer underlying balance to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transferUnderlying(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(value);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(value);
emit Transfer(msg.sender, to, _yamToFragment(value));
_moveDelegates(_delegates[msg.sender], _delegates[to], value);
return true;
}
/* - ERC20 functionality - */
/**
* @dev Transfer tokens to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transfer(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// underlying balance is stored in yams, so divide by current scaling factor
// note, this means as scaling factor grows, dust will be untransferrable.
// minimum transfer value == yamsScalingFactor / 1e24;
// get amount in underlying
uint256 yamValue = _fragmentToYam(value);
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(yamValue);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(msg.sender, to, value);
_moveDelegates(_delegates[msg.sender], _delegates[to], yamValue);
return true;
}
/**
* @dev Transfer tokens from one address to another.
* @param from The address you want to send tokens from.
* @param to The address you want to transfer to.
* @param value The amount of tokens to be transferred.
*/
function transferFrom(address from, address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// decrease allowance
_allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value);
// get value in yams
uint256 yamValue = _fragmentToYam(value);
// sub from from
_yamBalances[from] = _yamBalances[from].sub(yamValue);
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(from, to, value);
_moveDelegates(_delegates[from], _delegates[to], yamValue);
return true;
}
/**
* @param who The address to query.
* @return The balance of the specified address.
*/
function balanceOf(address who)
external
view
returns (uint256)
{
return _yamToFragment(_yamBalances[who]);
}
/** @notice Currently returns the internal storage amount
* @param who The address to query.
* @return The underlying balance of the specified address.
*/
function balanceOfUnderlying(address who)
external
view
returns (uint256)
{
return _yamBalances[who];
}
/**
* @dev Function to check the amount of tokens that an owner has allowed to a spender.
* @param owner_ The address which owns the funds.
* @param spender The address which will spend the funds.
* @return The number of tokens still available for the spender.
*/
function allowance(address owner_, address spender)
external
view
returns (uint256)
{
return _allowedFragments[owner_][spender];
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of
* msg.sender. This method is included for ERC20 compatibility.
* increaseAllowance and decreaseAllowance should be used instead.
* Changing an allowance with this method brings the risk that someone may transfer both
* the old and the new allowance - if they are both greater than zero - if a transfer
* transaction is mined before the later approve() call is mined.
*
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner has allowed to a spender.
* This method should be used instead of approve() to avoid the double approval vulnerability
* described above.
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] =
_allowedFragments[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner has allowed to a spender.
*
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
external
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
// --- Approve by signature ---
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
require(now <= deadline, "YAM/permit-expired");
bytes32 digest =
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
value,
nonces[owner]++,
deadline
)
)
)
);
require(owner != address(0), "YAM/invalid-address-0");
require(owner == ecrecover(digest, v, r, s), "YAM/invalid-permit");
_allowedFragments[owner][spender] = value;
emit Approval(owner, spender, value);
}
/* - Governance Functions - */
/** @notice sets the rebaser
* @param rebaser_ The address of the rebaser contract to use for authentication.
*/
function _setRebaser(address rebaser_)
external
onlyGov
{
address oldRebaser = rebaser;
rebaser = rebaser_;
emit NewRebaser(oldRebaser, rebaser_);
}
/** @notice sets the migrator
* @param migrator_ The address of the migrator contract to use for authentication.
*/
function _setMigrator(address migrator_)
external
onlyGov
{
address oldMigrator = migrator_;
migrator = migrator_;
emit NewMigrator(oldMigrator, migrator_);
}
/** @notice sets the incentivizer
* @param incentivizer_ The address of the rebaser contract to use for authentication.
*/
function _setIncentivizer(address incentivizer_)
external
onlyGov
{
address oldIncentivizer = incentivizer;
incentivizer = incentivizer_;
emit NewIncentivizer(oldIncentivizer, incentivizer_);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the rebaser contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice allows governance to assign delegate to self
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
function assignSelfDelegate(address nonvotingContract)
external
onlyGov
{
address delegate = _delegates[nonvotingContract];
require( delegate == address(0), "!address(0)" );
// assigns delegate to self only
_delegate(nonvotingContract, nonvotingContract);
}
/* - Extras - */
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetRate) / targetRate
* and targetRate is CpiOracleRate / baseCpi
*/
function rebase(
uint256 epoch,
uint256 indexDelta,
bool positive
)
external
onlyRebaser
returns (uint256)
{
// no change
if (indexDelta == 0) {
emit Rebase(epoch, yamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
// for events
uint256 prevYamsScalingFactor = yamsScalingFactor;
if (!positive) {
// negative rebase, decrease scaling factor
yamsScalingFactor = yamsScalingFactor.mul(BASE.sub(indexDelta)).div(BASE);
} else {
// positive reabse, increase scaling factor
uint256 newScalingFactor = yamsScalingFactor.mul(BASE.add(indexDelta)).div(BASE);
if (newScalingFactor < _maxScalingFactor()) {
yamsScalingFactor = newScalingFactor;
} else {
yamsScalingFactor = _maxScalingFactor();
}
}
// update total supply, correctly
totalSupply = _yamToFragment(initSupply);
emit Rebase(epoch, prevYamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
function yamToFragment(uint256 yam)
external
view
returns (uint256)
{
return _yamToFragment(yam);
}
function fragmentToYam(uint256 value)
external
view
returns (uint256)
{
return _fragmentToYam(value);
}
function _yamToFragment(uint256 yam)
internal
view
returns (uint256)
{
return yam.mul(yamsScalingFactor).div(internalDecimals);
}
function _fragmentToYam(uint256 value)
internal
view
returns (uint256)
{
return value.mul(internalDecimals).div(yamsScalingFactor);
}
// Rescue tokens
function rescueTokens(
address token,
address to,
uint256 amount
)
external
onlyGov
returns (bool)
{
// transfer to
SafeERC20.safeTransfer(IERC20(token), to, amount);
return true;
}
} | mintUnderlying | function mintUnderlying(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mintUnderlying(to, amount);
return true;
}
| /**
* @notice Mints new tokens using underlying amount, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
3578,
3770
]
} | 3,927 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMToken | contract YAMToken is YAMGovernanceToken {
// Modifiers
modifier onlyGov() {
require(msg.sender == gov);
_;
}
modifier onlyRebaser() {
require(msg.sender == rebaser);
_;
}
modifier onlyMinter() {
require(
msg.sender == rebaser
|| msg.sender == gov
|| msg.sender == incentivizer
|| msg.sender == migrator,
"not minter"
);
_;
}
modifier validRecipient(address to) {
require(to != address(0x0));
require(to != address(this));
_;
}
function initialize(
string memory name_,
string memory symbol_,
uint8 decimals_
)
public
{
require(yamsScalingFactor == 0, "already initialized");
name = name_;
symbol = symbol_;
decimals = decimals_;
}
/**
* @notice Computes the current max scaling factor
*/
function maxScalingFactor()
external
view
returns (uint256)
{
return _maxScalingFactor();
}
function _maxScalingFactor()
internal
view
returns (uint256)
{
// scaling factor can only go up to 2**256-1 = initSupply * yamsScalingFactor
// this is used to check if yamsScalingFactor will be too high to compute balances when rebasing.
return uint256(-1) / initSupply;
}
/**
* @notice Mints new tokens, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mint(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mint(to, amount);
return true;
}
function _mint(address to, uint256 amount)
internal
{
if (msg.sender == migrator) {
// migrator directly uses v2 balance for the amount
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
} else {
// increase totalSupply
totalSupply = totalSupply.add(amount);
// get underlying value
uint256 yamValue = _fragmentToYam(amount);
// increase initSupply
initSupply = initSupply.add(yamValue);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(yamValue);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], yamValue);
emit Mint(to, amount);
emit Transfer(address(0), to, amount);
}
}
/**
* @notice Mints new tokens using underlying amount, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mintUnderlying(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mintUnderlying(to, amount);
return true;
}
function _mintUnderlying(address to, uint256 amount)
internal
{
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
}
/**
* @dev Transfer underlying balance to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transferUnderlying(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(value);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(value);
emit Transfer(msg.sender, to, _yamToFragment(value));
_moveDelegates(_delegates[msg.sender], _delegates[to], value);
return true;
}
/* - ERC20 functionality - */
/**
* @dev Transfer tokens to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transfer(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// underlying balance is stored in yams, so divide by current scaling factor
// note, this means as scaling factor grows, dust will be untransferrable.
// minimum transfer value == yamsScalingFactor / 1e24;
// get amount in underlying
uint256 yamValue = _fragmentToYam(value);
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(yamValue);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(msg.sender, to, value);
_moveDelegates(_delegates[msg.sender], _delegates[to], yamValue);
return true;
}
/**
* @dev Transfer tokens from one address to another.
* @param from The address you want to send tokens from.
* @param to The address you want to transfer to.
* @param value The amount of tokens to be transferred.
*/
function transferFrom(address from, address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// decrease allowance
_allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value);
// get value in yams
uint256 yamValue = _fragmentToYam(value);
// sub from from
_yamBalances[from] = _yamBalances[from].sub(yamValue);
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(from, to, value);
_moveDelegates(_delegates[from], _delegates[to], yamValue);
return true;
}
/**
* @param who The address to query.
* @return The balance of the specified address.
*/
function balanceOf(address who)
external
view
returns (uint256)
{
return _yamToFragment(_yamBalances[who]);
}
/** @notice Currently returns the internal storage amount
* @param who The address to query.
* @return The underlying balance of the specified address.
*/
function balanceOfUnderlying(address who)
external
view
returns (uint256)
{
return _yamBalances[who];
}
/**
* @dev Function to check the amount of tokens that an owner has allowed to a spender.
* @param owner_ The address which owns the funds.
* @param spender The address which will spend the funds.
* @return The number of tokens still available for the spender.
*/
function allowance(address owner_, address spender)
external
view
returns (uint256)
{
return _allowedFragments[owner_][spender];
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of
* msg.sender. This method is included for ERC20 compatibility.
* increaseAllowance and decreaseAllowance should be used instead.
* Changing an allowance with this method brings the risk that someone may transfer both
* the old and the new allowance - if they are both greater than zero - if a transfer
* transaction is mined before the later approve() call is mined.
*
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner has allowed to a spender.
* This method should be used instead of approve() to avoid the double approval vulnerability
* described above.
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] =
_allowedFragments[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner has allowed to a spender.
*
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
external
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
// --- Approve by signature ---
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
require(now <= deadline, "YAM/permit-expired");
bytes32 digest =
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
value,
nonces[owner]++,
deadline
)
)
)
);
require(owner != address(0), "YAM/invalid-address-0");
require(owner == ecrecover(digest, v, r, s), "YAM/invalid-permit");
_allowedFragments[owner][spender] = value;
emit Approval(owner, spender, value);
}
/* - Governance Functions - */
/** @notice sets the rebaser
* @param rebaser_ The address of the rebaser contract to use for authentication.
*/
function _setRebaser(address rebaser_)
external
onlyGov
{
address oldRebaser = rebaser;
rebaser = rebaser_;
emit NewRebaser(oldRebaser, rebaser_);
}
/** @notice sets the migrator
* @param migrator_ The address of the migrator contract to use for authentication.
*/
function _setMigrator(address migrator_)
external
onlyGov
{
address oldMigrator = migrator_;
migrator = migrator_;
emit NewMigrator(oldMigrator, migrator_);
}
/** @notice sets the incentivizer
* @param incentivizer_ The address of the rebaser contract to use for authentication.
*/
function _setIncentivizer(address incentivizer_)
external
onlyGov
{
address oldIncentivizer = incentivizer;
incentivizer = incentivizer_;
emit NewIncentivizer(oldIncentivizer, incentivizer_);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the rebaser contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice allows governance to assign delegate to self
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
function assignSelfDelegate(address nonvotingContract)
external
onlyGov
{
address delegate = _delegates[nonvotingContract];
require( delegate == address(0), "!address(0)" );
// assigns delegate to self only
_delegate(nonvotingContract, nonvotingContract);
}
/* - Extras - */
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetRate) / targetRate
* and targetRate is CpiOracleRate / baseCpi
*/
function rebase(
uint256 epoch,
uint256 indexDelta,
bool positive
)
external
onlyRebaser
returns (uint256)
{
// no change
if (indexDelta == 0) {
emit Rebase(epoch, yamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
// for events
uint256 prevYamsScalingFactor = yamsScalingFactor;
if (!positive) {
// negative rebase, decrease scaling factor
yamsScalingFactor = yamsScalingFactor.mul(BASE.sub(indexDelta)).div(BASE);
} else {
// positive reabse, increase scaling factor
uint256 newScalingFactor = yamsScalingFactor.mul(BASE.add(indexDelta)).div(BASE);
if (newScalingFactor < _maxScalingFactor()) {
yamsScalingFactor = newScalingFactor;
} else {
yamsScalingFactor = _maxScalingFactor();
}
}
// update total supply, correctly
totalSupply = _yamToFragment(initSupply);
emit Rebase(epoch, prevYamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
function yamToFragment(uint256 yam)
external
view
returns (uint256)
{
return _yamToFragment(yam);
}
function fragmentToYam(uint256 value)
external
view
returns (uint256)
{
return _fragmentToYam(value);
}
function _yamToFragment(uint256 yam)
internal
view
returns (uint256)
{
return yam.mul(yamsScalingFactor).div(internalDecimals);
}
function _fragmentToYam(uint256 value)
internal
view
returns (uint256)
{
return value.mul(internalDecimals).div(yamsScalingFactor);
}
// Rescue tokens
function rescueTokens(
address token,
address to,
uint256 amount
)
external
onlyGov
returns (bool)
{
// transfer to
SafeERC20.safeTransfer(IERC20(token), to, amount);
return true;
}
} | transferUnderlying | function transferUnderlying(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(value);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(value);
emit Transfer(msg.sender, to, _yamToFragment(value));
_moveDelegates(_delegates[msg.sender], _delegates[to], value);
return true;
}
| /**
* @dev Transfer underlying balance to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
4796,
5308
]
} | 3,928 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMToken | contract YAMToken is YAMGovernanceToken {
// Modifiers
modifier onlyGov() {
require(msg.sender == gov);
_;
}
modifier onlyRebaser() {
require(msg.sender == rebaser);
_;
}
modifier onlyMinter() {
require(
msg.sender == rebaser
|| msg.sender == gov
|| msg.sender == incentivizer
|| msg.sender == migrator,
"not minter"
);
_;
}
modifier validRecipient(address to) {
require(to != address(0x0));
require(to != address(this));
_;
}
function initialize(
string memory name_,
string memory symbol_,
uint8 decimals_
)
public
{
require(yamsScalingFactor == 0, "already initialized");
name = name_;
symbol = symbol_;
decimals = decimals_;
}
/**
* @notice Computes the current max scaling factor
*/
function maxScalingFactor()
external
view
returns (uint256)
{
return _maxScalingFactor();
}
function _maxScalingFactor()
internal
view
returns (uint256)
{
// scaling factor can only go up to 2**256-1 = initSupply * yamsScalingFactor
// this is used to check if yamsScalingFactor will be too high to compute balances when rebasing.
return uint256(-1) / initSupply;
}
/**
* @notice Mints new tokens, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mint(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mint(to, amount);
return true;
}
function _mint(address to, uint256 amount)
internal
{
if (msg.sender == migrator) {
// migrator directly uses v2 balance for the amount
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
} else {
// increase totalSupply
totalSupply = totalSupply.add(amount);
// get underlying value
uint256 yamValue = _fragmentToYam(amount);
// increase initSupply
initSupply = initSupply.add(yamValue);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(yamValue);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], yamValue);
emit Mint(to, amount);
emit Transfer(address(0), to, amount);
}
}
/**
* @notice Mints new tokens using underlying amount, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mintUnderlying(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mintUnderlying(to, amount);
return true;
}
function _mintUnderlying(address to, uint256 amount)
internal
{
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
}
/**
* @dev Transfer underlying balance to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transferUnderlying(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(value);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(value);
emit Transfer(msg.sender, to, _yamToFragment(value));
_moveDelegates(_delegates[msg.sender], _delegates[to], value);
return true;
}
/* - ERC20 functionality - */
/**
* @dev Transfer tokens to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transfer(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// underlying balance is stored in yams, so divide by current scaling factor
// note, this means as scaling factor grows, dust will be untransferrable.
// minimum transfer value == yamsScalingFactor / 1e24;
// get amount in underlying
uint256 yamValue = _fragmentToYam(value);
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(yamValue);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(msg.sender, to, value);
_moveDelegates(_delegates[msg.sender], _delegates[to], yamValue);
return true;
}
/**
* @dev Transfer tokens from one address to another.
* @param from The address you want to send tokens from.
* @param to The address you want to transfer to.
* @param value The amount of tokens to be transferred.
*/
function transferFrom(address from, address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// decrease allowance
_allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value);
// get value in yams
uint256 yamValue = _fragmentToYam(value);
// sub from from
_yamBalances[from] = _yamBalances[from].sub(yamValue);
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(from, to, value);
_moveDelegates(_delegates[from], _delegates[to], yamValue);
return true;
}
/**
* @param who The address to query.
* @return The balance of the specified address.
*/
function balanceOf(address who)
external
view
returns (uint256)
{
return _yamToFragment(_yamBalances[who]);
}
/** @notice Currently returns the internal storage amount
* @param who The address to query.
* @return The underlying balance of the specified address.
*/
function balanceOfUnderlying(address who)
external
view
returns (uint256)
{
return _yamBalances[who];
}
/**
* @dev Function to check the amount of tokens that an owner has allowed to a spender.
* @param owner_ The address which owns the funds.
* @param spender The address which will spend the funds.
* @return The number of tokens still available for the spender.
*/
function allowance(address owner_, address spender)
external
view
returns (uint256)
{
return _allowedFragments[owner_][spender];
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of
* msg.sender. This method is included for ERC20 compatibility.
* increaseAllowance and decreaseAllowance should be used instead.
* Changing an allowance with this method brings the risk that someone may transfer both
* the old and the new allowance - if they are both greater than zero - if a transfer
* transaction is mined before the later approve() call is mined.
*
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner has allowed to a spender.
* This method should be used instead of approve() to avoid the double approval vulnerability
* described above.
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] =
_allowedFragments[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner has allowed to a spender.
*
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
external
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
// --- Approve by signature ---
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
require(now <= deadline, "YAM/permit-expired");
bytes32 digest =
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
value,
nonces[owner]++,
deadline
)
)
)
);
require(owner != address(0), "YAM/invalid-address-0");
require(owner == ecrecover(digest, v, r, s), "YAM/invalid-permit");
_allowedFragments[owner][spender] = value;
emit Approval(owner, spender, value);
}
/* - Governance Functions - */
/** @notice sets the rebaser
* @param rebaser_ The address of the rebaser contract to use for authentication.
*/
function _setRebaser(address rebaser_)
external
onlyGov
{
address oldRebaser = rebaser;
rebaser = rebaser_;
emit NewRebaser(oldRebaser, rebaser_);
}
/** @notice sets the migrator
* @param migrator_ The address of the migrator contract to use for authentication.
*/
function _setMigrator(address migrator_)
external
onlyGov
{
address oldMigrator = migrator_;
migrator = migrator_;
emit NewMigrator(oldMigrator, migrator_);
}
/** @notice sets the incentivizer
* @param incentivizer_ The address of the rebaser contract to use for authentication.
*/
function _setIncentivizer(address incentivizer_)
external
onlyGov
{
address oldIncentivizer = incentivizer;
incentivizer = incentivizer_;
emit NewIncentivizer(oldIncentivizer, incentivizer_);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the rebaser contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice allows governance to assign delegate to self
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
function assignSelfDelegate(address nonvotingContract)
external
onlyGov
{
address delegate = _delegates[nonvotingContract];
require( delegate == address(0), "!address(0)" );
// assigns delegate to self only
_delegate(nonvotingContract, nonvotingContract);
}
/* - Extras - */
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetRate) / targetRate
* and targetRate is CpiOracleRate / baseCpi
*/
function rebase(
uint256 epoch,
uint256 indexDelta,
bool positive
)
external
onlyRebaser
returns (uint256)
{
// no change
if (indexDelta == 0) {
emit Rebase(epoch, yamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
// for events
uint256 prevYamsScalingFactor = yamsScalingFactor;
if (!positive) {
// negative rebase, decrease scaling factor
yamsScalingFactor = yamsScalingFactor.mul(BASE.sub(indexDelta)).div(BASE);
} else {
// positive reabse, increase scaling factor
uint256 newScalingFactor = yamsScalingFactor.mul(BASE.add(indexDelta)).div(BASE);
if (newScalingFactor < _maxScalingFactor()) {
yamsScalingFactor = newScalingFactor;
} else {
yamsScalingFactor = _maxScalingFactor();
}
}
// update total supply, correctly
totalSupply = _yamToFragment(initSupply);
emit Rebase(epoch, prevYamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
function yamToFragment(uint256 yam)
external
view
returns (uint256)
{
return _yamToFragment(yam);
}
function fragmentToYam(uint256 value)
external
view
returns (uint256)
{
return _fragmentToYam(value);
}
function _yamToFragment(uint256 yam)
internal
view
returns (uint256)
{
return yam.mul(yamsScalingFactor).div(internalDecimals);
}
function _fragmentToYam(uint256 value)
internal
view
returns (uint256)
{
return value.mul(internalDecimals).div(yamsScalingFactor);
}
// Rescue tokens
function rescueTokens(
address token,
address to,
uint256 amount
)
external
onlyGov
returns (bool)
{
// transfer to
SafeERC20.safeTransfer(IERC20(token), to, amount);
return true;
}
} | transfer | function transfer(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// underlying balance is stored in yams, so divide by current scaling factor
// note, this means as scaling factor grows, dust will be untransferrable.
// minimum transfer value == yamsScalingFactor / 1e24;
// get amount in underlying
uint256 yamValue = _fragmentToYam(value);
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(yamValue);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(msg.sender, to, value);
_moveDelegates(_delegates[msg.sender], _delegates[to], yamValue);
return true;
}
| /**
* @dev Transfer tokens to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
5565,
6388
]
} | 3,929 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMToken | contract YAMToken is YAMGovernanceToken {
// Modifiers
modifier onlyGov() {
require(msg.sender == gov);
_;
}
modifier onlyRebaser() {
require(msg.sender == rebaser);
_;
}
modifier onlyMinter() {
require(
msg.sender == rebaser
|| msg.sender == gov
|| msg.sender == incentivizer
|| msg.sender == migrator,
"not minter"
);
_;
}
modifier validRecipient(address to) {
require(to != address(0x0));
require(to != address(this));
_;
}
function initialize(
string memory name_,
string memory symbol_,
uint8 decimals_
)
public
{
require(yamsScalingFactor == 0, "already initialized");
name = name_;
symbol = symbol_;
decimals = decimals_;
}
/**
* @notice Computes the current max scaling factor
*/
function maxScalingFactor()
external
view
returns (uint256)
{
return _maxScalingFactor();
}
function _maxScalingFactor()
internal
view
returns (uint256)
{
// scaling factor can only go up to 2**256-1 = initSupply * yamsScalingFactor
// this is used to check if yamsScalingFactor will be too high to compute balances when rebasing.
return uint256(-1) / initSupply;
}
/**
* @notice Mints new tokens, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mint(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mint(to, amount);
return true;
}
function _mint(address to, uint256 amount)
internal
{
if (msg.sender == migrator) {
// migrator directly uses v2 balance for the amount
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
} else {
// increase totalSupply
totalSupply = totalSupply.add(amount);
// get underlying value
uint256 yamValue = _fragmentToYam(amount);
// increase initSupply
initSupply = initSupply.add(yamValue);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(yamValue);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], yamValue);
emit Mint(to, amount);
emit Transfer(address(0), to, amount);
}
}
/**
* @notice Mints new tokens using underlying amount, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mintUnderlying(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mintUnderlying(to, amount);
return true;
}
function _mintUnderlying(address to, uint256 amount)
internal
{
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
}
/**
* @dev Transfer underlying balance to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transferUnderlying(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(value);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(value);
emit Transfer(msg.sender, to, _yamToFragment(value));
_moveDelegates(_delegates[msg.sender], _delegates[to], value);
return true;
}
/* - ERC20 functionality - */
/**
* @dev Transfer tokens to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transfer(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// underlying balance is stored in yams, so divide by current scaling factor
// note, this means as scaling factor grows, dust will be untransferrable.
// minimum transfer value == yamsScalingFactor / 1e24;
// get amount in underlying
uint256 yamValue = _fragmentToYam(value);
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(yamValue);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(msg.sender, to, value);
_moveDelegates(_delegates[msg.sender], _delegates[to], yamValue);
return true;
}
/**
* @dev Transfer tokens from one address to another.
* @param from The address you want to send tokens from.
* @param to The address you want to transfer to.
* @param value The amount of tokens to be transferred.
*/
function transferFrom(address from, address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// decrease allowance
_allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value);
// get value in yams
uint256 yamValue = _fragmentToYam(value);
// sub from from
_yamBalances[from] = _yamBalances[from].sub(yamValue);
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(from, to, value);
_moveDelegates(_delegates[from], _delegates[to], yamValue);
return true;
}
/**
* @param who The address to query.
* @return The balance of the specified address.
*/
function balanceOf(address who)
external
view
returns (uint256)
{
return _yamToFragment(_yamBalances[who]);
}
/** @notice Currently returns the internal storage amount
* @param who The address to query.
* @return The underlying balance of the specified address.
*/
function balanceOfUnderlying(address who)
external
view
returns (uint256)
{
return _yamBalances[who];
}
/**
* @dev Function to check the amount of tokens that an owner has allowed to a spender.
* @param owner_ The address which owns the funds.
* @param spender The address which will spend the funds.
* @return The number of tokens still available for the spender.
*/
function allowance(address owner_, address spender)
external
view
returns (uint256)
{
return _allowedFragments[owner_][spender];
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of
* msg.sender. This method is included for ERC20 compatibility.
* increaseAllowance and decreaseAllowance should be used instead.
* Changing an allowance with this method brings the risk that someone may transfer both
* the old and the new allowance - if they are both greater than zero - if a transfer
* transaction is mined before the later approve() call is mined.
*
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner has allowed to a spender.
* This method should be used instead of approve() to avoid the double approval vulnerability
* described above.
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] =
_allowedFragments[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner has allowed to a spender.
*
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
external
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
// --- Approve by signature ---
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
require(now <= deadline, "YAM/permit-expired");
bytes32 digest =
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
value,
nonces[owner]++,
deadline
)
)
)
);
require(owner != address(0), "YAM/invalid-address-0");
require(owner == ecrecover(digest, v, r, s), "YAM/invalid-permit");
_allowedFragments[owner][spender] = value;
emit Approval(owner, spender, value);
}
/* - Governance Functions - */
/** @notice sets the rebaser
* @param rebaser_ The address of the rebaser contract to use for authentication.
*/
function _setRebaser(address rebaser_)
external
onlyGov
{
address oldRebaser = rebaser;
rebaser = rebaser_;
emit NewRebaser(oldRebaser, rebaser_);
}
/** @notice sets the migrator
* @param migrator_ The address of the migrator contract to use for authentication.
*/
function _setMigrator(address migrator_)
external
onlyGov
{
address oldMigrator = migrator_;
migrator = migrator_;
emit NewMigrator(oldMigrator, migrator_);
}
/** @notice sets the incentivizer
* @param incentivizer_ The address of the rebaser contract to use for authentication.
*/
function _setIncentivizer(address incentivizer_)
external
onlyGov
{
address oldIncentivizer = incentivizer;
incentivizer = incentivizer_;
emit NewIncentivizer(oldIncentivizer, incentivizer_);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the rebaser contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice allows governance to assign delegate to self
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
function assignSelfDelegate(address nonvotingContract)
external
onlyGov
{
address delegate = _delegates[nonvotingContract];
require( delegate == address(0), "!address(0)" );
// assigns delegate to self only
_delegate(nonvotingContract, nonvotingContract);
}
/* - Extras - */
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetRate) / targetRate
* and targetRate is CpiOracleRate / baseCpi
*/
function rebase(
uint256 epoch,
uint256 indexDelta,
bool positive
)
external
onlyRebaser
returns (uint256)
{
// no change
if (indexDelta == 0) {
emit Rebase(epoch, yamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
// for events
uint256 prevYamsScalingFactor = yamsScalingFactor;
if (!positive) {
// negative rebase, decrease scaling factor
yamsScalingFactor = yamsScalingFactor.mul(BASE.sub(indexDelta)).div(BASE);
} else {
// positive reabse, increase scaling factor
uint256 newScalingFactor = yamsScalingFactor.mul(BASE.add(indexDelta)).div(BASE);
if (newScalingFactor < _maxScalingFactor()) {
yamsScalingFactor = newScalingFactor;
} else {
yamsScalingFactor = _maxScalingFactor();
}
}
// update total supply, correctly
totalSupply = _yamToFragment(initSupply);
emit Rebase(epoch, prevYamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
function yamToFragment(uint256 yam)
external
view
returns (uint256)
{
return _yamToFragment(yam);
}
function fragmentToYam(uint256 value)
external
view
returns (uint256)
{
return _fragmentToYam(value);
}
function _yamToFragment(uint256 yam)
internal
view
returns (uint256)
{
return yam.mul(yamsScalingFactor).div(internalDecimals);
}
function _fragmentToYam(uint256 value)
internal
view
returns (uint256)
{
return value.mul(internalDecimals).div(yamsScalingFactor);
}
// Rescue tokens
function rescueTokens(
address token,
address to,
uint256 amount
)
external
onlyGov
returns (bool)
{
// transfer to
SafeERC20.safeTransfer(IERC20(token), to, amount);
return true;
}
} | transferFrom | function transferFrom(address from, address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// decrease allowance
_allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value);
// get value in yams
uint256 yamValue = _fragmentToYam(value);
// sub from from
_yamBalances[from] = _yamBalances[from].sub(yamValue);
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(from, to, value);
_moveDelegates(_delegates[from], _delegates[to], yamValue);
return true;
}
| /**
* @dev Transfer tokens from one address to another.
* @param from The address you want to send tokens from.
* @param to The address you want to transfer to.
* @param value The amount of tokens to be transferred.
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
6640,
7286
]
} | 3,930 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMToken | contract YAMToken is YAMGovernanceToken {
// Modifiers
modifier onlyGov() {
require(msg.sender == gov);
_;
}
modifier onlyRebaser() {
require(msg.sender == rebaser);
_;
}
modifier onlyMinter() {
require(
msg.sender == rebaser
|| msg.sender == gov
|| msg.sender == incentivizer
|| msg.sender == migrator,
"not minter"
);
_;
}
modifier validRecipient(address to) {
require(to != address(0x0));
require(to != address(this));
_;
}
function initialize(
string memory name_,
string memory symbol_,
uint8 decimals_
)
public
{
require(yamsScalingFactor == 0, "already initialized");
name = name_;
symbol = symbol_;
decimals = decimals_;
}
/**
* @notice Computes the current max scaling factor
*/
function maxScalingFactor()
external
view
returns (uint256)
{
return _maxScalingFactor();
}
function _maxScalingFactor()
internal
view
returns (uint256)
{
// scaling factor can only go up to 2**256-1 = initSupply * yamsScalingFactor
// this is used to check if yamsScalingFactor will be too high to compute balances when rebasing.
return uint256(-1) / initSupply;
}
/**
* @notice Mints new tokens, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mint(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mint(to, amount);
return true;
}
function _mint(address to, uint256 amount)
internal
{
if (msg.sender == migrator) {
// migrator directly uses v2 balance for the amount
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
} else {
// increase totalSupply
totalSupply = totalSupply.add(amount);
// get underlying value
uint256 yamValue = _fragmentToYam(amount);
// increase initSupply
initSupply = initSupply.add(yamValue);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(yamValue);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], yamValue);
emit Mint(to, amount);
emit Transfer(address(0), to, amount);
}
}
/**
* @notice Mints new tokens using underlying amount, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mintUnderlying(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mintUnderlying(to, amount);
return true;
}
function _mintUnderlying(address to, uint256 amount)
internal
{
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
}
/**
* @dev Transfer underlying balance to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transferUnderlying(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(value);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(value);
emit Transfer(msg.sender, to, _yamToFragment(value));
_moveDelegates(_delegates[msg.sender], _delegates[to], value);
return true;
}
/* - ERC20 functionality - */
/**
* @dev Transfer tokens to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transfer(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// underlying balance is stored in yams, so divide by current scaling factor
// note, this means as scaling factor grows, dust will be untransferrable.
// minimum transfer value == yamsScalingFactor / 1e24;
// get amount in underlying
uint256 yamValue = _fragmentToYam(value);
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(yamValue);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(msg.sender, to, value);
_moveDelegates(_delegates[msg.sender], _delegates[to], yamValue);
return true;
}
/**
* @dev Transfer tokens from one address to another.
* @param from The address you want to send tokens from.
* @param to The address you want to transfer to.
* @param value The amount of tokens to be transferred.
*/
function transferFrom(address from, address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// decrease allowance
_allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value);
// get value in yams
uint256 yamValue = _fragmentToYam(value);
// sub from from
_yamBalances[from] = _yamBalances[from].sub(yamValue);
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(from, to, value);
_moveDelegates(_delegates[from], _delegates[to], yamValue);
return true;
}
/**
* @param who The address to query.
* @return The balance of the specified address.
*/
function balanceOf(address who)
external
view
returns (uint256)
{
return _yamToFragment(_yamBalances[who]);
}
/** @notice Currently returns the internal storage amount
* @param who The address to query.
* @return The underlying balance of the specified address.
*/
function balanceOfUnderlying(address who)
external
view
returns (uint256)
{
return _yamBalances[who];
}
/**
* @dev Function to check the amount of tokens that an owner has allowed to a spender.
* @param owner_ The address which owns the funds.
* @param spender The address which will spend the funds.
* @return The number of tokens still available for the spender.
*/
function allowance(address owner_, address spender)
external
view
returns (uint256)
{
return _allowedFragments[owner_][spender];
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of
* msg.sender. This method is included for ERC20 compatibility.
* increaseAllowance and decreaseAllowance should be used instead.
* Changing an allowance with this method brings the risk that someone may transfer both
* the old and the new allowance - if they are both greater than zero - if a transfer
* transaction is mined before the later approve() call is mined.
*
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner has allowed to a spender.
* This method should be used instead of approve() to avoid the double approval vulnerability
* described above.
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] =
_allowedFragments[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner has allowed to a spender.
*
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
external
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
// --- Approve by signature ---
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
require(now <= deadline, "YAM/permit-expired");
bytes32 digest =
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
value,
nonces[owner]++,
deadline
)
)
)
);
require(owner != address(0), "YAM/invalid-address-0");
require(owner == ecrecover(digest, v, r, s), "YAM/invalid-permit");
_allowedFragments[owner][spender] = value;
emit Approval(owner, spender, value);
}
/* - Governance Functions - */
/** @notice sets the rebaser
* @param rebaser_ The address of the rebaser contract to use for authentication.
*/
function _setRebaser(address rebaser_)
external
onlyGov
{
address oldRebaser = rebaser;
rebaser = rebaser_;
emit NewRebaser(oldRebaser, rebaser_);
}
/** @notice sets the migrator
* @param migrator_ The address of the migrator contract to use for authentication.
*/
function _setMigrator(address migrator_)
external
onlyGov
{
address oldMigrator = migrator_;
migrator = migrator_;
emit NewMigrator(oldMigrator, migrator_);
}
/** @notice sets the incentivizer
* @param incentivizer_ The address of the rebaser contract to use for authentication.
*/
function _setIncentivizer(address incentivizer_)
external
onlyGov
{
address oldIncentivizer = incentivizer;
incentivizer = incentivizer_;
emit NewIncentivizer(oldIncentivizer, incentivizer_);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the rebaser contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice allows governance to assign delegate to self
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
function assignSelfDelegate(address nonvotingContract)
external
onlyGov
{
address delegate = _delegates[nonvotingContract];
require( delegate == address(0), "!address(0)" );
// assigns delegate to self only
_delegate(nonvotingContract, nonvotingContract);
}
/* - Extras - */
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetRate) / targetRate
* and targetRate is CpiOracleRate / baseCpi
*/
function rebase(
uint256 epoch,
uint256 indexDelta,
bool positive
)
external
onlyRebaser
returns (uint256)
{
// no change
if (indexDelta == 0) {
emit Rebase(epoch, yamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
// for events
uint256 prevYamsScalingFactor = yamsScalingFactor;
if (!positive) {
// negative rebase, decrease scaling factor
yamsScalingFactor = yamsScalingFactor.mul(BASE.sub(indexDelta)).div(BASE);
} else {
// positive reabse, increase scaling factor
uint256 newScalingFactor = yamsScalingFactor.mul(BASE.add(indexDelta)).div(BASE);
if (newScalingFactor < _maxScalingFactor()) {
yamsScalingFactor = newScalingFactor;
} else {
yamsScalingFactor = _maxScalingFactor();
}
}
// update total supply, correctly
totalSupply = _yamToFragment(initSupply);
emit Rebase(epoch, prevYamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
function yamToFragment(uint256 yam)
external
view
returns (uint256)
{
return _yamToFragment(yam);
}
function fragmentToYam(uint256 value)
external
view
returns (uint256)
{
return _fragmentToYam(value);
}
function _yamToFragment(uint256 yam)
internal
view
returns (uint256)
{
return yam.mul(yamsScalingFactor).div(internalDecimals);
}
function _fragmentToYam(uint256 value)
internal
view
returns (uint256)
{
return value.mul(internalDecimals).div(yamsScalingFactor);
}
// Rescue tokens
function rescueTokens(
address token,
address to,
uint256 amount
)
external
onlyGov
returns (bool)
{
// transfer to
SafeERC20.safeTransfer(IERC20(token), to, amount);
return true;
}
} | balanceOf | function balanceOf(address who)
external
view
returns (uint256)
{
return _yamToFragment(_yamBalances[who]);
}
| /**
* @param who The address to query.
* @return The balance of the specified address.
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
7399,
7551
]
} | 3,931 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMToken | contract YAMToken is YAMGovernanceToken {
// Modifiers
modifier onlyGov() {
require(msg.sender == gov);
_;
}
modifier onlyRebaser() {
require(msg.sender == rebaser);
_;
}
modifier onlyMinter() {
require(
msg.sender == rebaser
|| msg.sender == gov
|| msg.sender == incentivizer
|| msg.sender == migrator,
"not minter"
);
_;
}
modifier validRecipient(address to) {
require(to != address(0x0));
require(to != address(this));
_;
}
function initialize(
string memory name_,
string memory symbol_,
uint8 decimals_
)
public
{
require(yamsScalingFactor == 0, "already initialized");
name = name_;
symbol = symbol_;
decimals = decimals_;
}
/**
* @notice Computes the current max scaling factor
*/
function maxScalingFactor()
external
view
returns (uint256)
{
return _maxScalingFactor();
}
function _maxScalingFactor()
internal
view
returns (uint256)
{
// scaling factor can only go up to 2**256-1 = initSupply * yamsScalingFactor
// this is used to check if yamsScalingFactor will be too high to compute balances when rebasing.
return uint256(-1) / initSupply;
}
/**
* @notice Mints new tokens, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mint(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mint(to, amount);
return true;
}
function _mint(address to, uint256 amount)
internal
{
if (msg.sender == migrator) {
// migrator directly uses v2 balance for the amount
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
} else {
// increase totalSupply
totalSupply = totalSupply.add(amount);
// get underlying value
uint256 yamValue = _fragmentToYam(amount);
// increase initSupply
initSupply = initSupply.add(yamValue);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(yamValue);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], yamValue);
emit Mint(to, amount);
emit Transfer(address(0), to, amount);
}
}
/**
* @notice Mints new tokens using underlying amount, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mintUnderlying(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mintUnderlying(to, amount);
return true;
}
function _mintUnderlying(address to, uint256 amount)
internal
{
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
}
/**
* @dev Transfer underlying balance to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transferUnderlying(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(value);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(value);
emit Transfer(msg.sender, to, _yamToFragment(value));
_moveDelegates(_delegates[msg.sender], _delegates[to], value);
return true;
}
/* - ERC20 functionality - */
/**
* @dev Transfer tokens to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transfer(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// underlying balance is stored in yams, so divide by current scaling factor
// note, this means as scaling factor grows, dust will be untransferrable.
// minimum transfer value == yamsScalingFactor / 1e24;
// get amount in underlying
uint256 yamValue = _fragmentToYam(value);
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(yamValue);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(msg.sender, to, value);
_moveDelegates(_delegates[msg.sender], _delegates[to], yamValue);
return true;
}
/**
* @dev Transfer tokens from one address to another.
* @param from The address you want to send tokens from.
* @param to The address you want to transfer to.
* @param value The amount of tokens to be transferred.
*/
function transferFrom(address from, address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// decrease allowance
_allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value);
// get value in yams
uint256 yamValue = _fragmentToYam(value);
// sub from from
_yamBalances[from] = _yamBalances[from].sub(yamValue);
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(from, to, value);
_moveDelegates(_delegates[from], _delegates[to], yamValue);
return true;
}
/**
* @param who The address to query.
* @return The balance of the specified address.
*/
function balanceOf(address who)
external
view
returns (uint256)
{
return _yamToFragment(_yamBalances[who]);
}
/** @notice Currently returns the internal storage amount
* @param who The address to query.
* @return The underlying balance of the specified address.
*/
function balanceOfUnderlying(address who)
external
view
returns (uint256)
{
return _yamBalances[who];
}
/**
* @dev Function to check the amount of tokens that an owner has allowed to a spender.
* @param owner_ The address which owns the funds.
* @param spender The address which will spend the funds.
* @return The number of tokens still available for the spender.
*/
function allowance(address owner_, address spender)
external
view
returns (uint256)
{
return _allowedFragments[owner_][spender];
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of
* msg.sender. This method is included for ERC20 compatibility.
* increaseAllowance and decreaseAllowance should be used instead.
* Changing an allowance with this method brings the risk that someone may transfer both
* the old and the new allowance - if they are both greater than zero - if a transfer
* transaction is mined before the later approve() call is mined.
*
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner has allowed to a spender.
* This method should be used instead of approve() to avoid the double approval vulnerability
* described above.
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] =
_allowedFragments[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner has allowed to a spender.
*
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
external
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
// --- Approve by signature ---
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
require(now <= deadline, "YAM/permit-expired");
bytes32 digest =
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
value,
nonces[owner]++,
deadline
)
)
)
);
require(owner != address(0), "YAM/invalid-address-0");
require(owner == ecrecover(digest, v, r, s), "YAM/invalid-permit");
_allowedFragments[owner][spender] = value;
emit Approval(owner, spender, value);
}
/* - Governance Functions - */
/** @notice sets the rebaser
* @param rebaser_ The address of the rebaser contract to use for authentication.
*/
function _setRebaser(address rebaser_)
external
onlyGov
{
address oldRebaser = rebaser;
rebaser = rebaser_;
emit NewRebaser(oldRebaser, rebaser_);
}
/** @notice sets the migrator
* @param migrator_ The address of the migrator contract to use for authentication.
*/
function _setMigrator(address migrator_)
external
onlyGov
{
address oldMigrator = migrator_;
migrator = migrator_;
emit NewMigrator(oldMigrator, migrator_);
}
/** @notice sets the incentivizer
* @param incentivizer_ The address of the rebaser contract to use for authentication.
*/
function _setIncentivizer(address incentivizer_)
external
onlyGov
{
address oldIncentivizer = incentivizer;
incentivizer = incentivizer_;
emit NewIncentivizer(oldIncentivizer, incentivizer_);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the rebaser contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice allows governance to assign delegate to self
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
function assignSelfDelegate(address nonvotingContract)
external
onlyGov
{
address delegate = _delegates[nonvotingContract];
require( delegate == address(0), "!address(0)" );
// assigns delegate to self only
_delegate(nonvotingContract, nonvotingContract);
}
/* - Extras - */
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetRate) / targetRate
* and targetRate is CpiOracleRate / baseCpi
*/
function rebase(
uint256 epoch,
uint256 indexDelta,
bool positive
)
external
onlyRebaser
returns (uint256)
{
// no change
if (indexDelta == 0) {
emit Rebase(epoch, yamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
// for events
uint256 prevYamsScalingFactor = yamsScalingFactor;
if (!positive) {
// negative rebase, decrease scaling factor
yamsScalingFactor = yamsScalingFactor.mul(BASE.sub(indexDelta)).div(BASE);
} else {
// positive reabse, increase scaling factor
uint256 newScalingFactor = yamsScalingFactor.mul(BASE.add(indexDelta)).div(BASE);
if (newScalingFactor < _maxScalingFactor()) {
yamsScalingFactor = newScalingFactor;
} else {
yamsScalingFactor = _maxScalingFactor();
}
}
// update total supply, correctly
totalSupply = _yamToFragment(initSupply);
emit Rebase(epoch, prevYamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
function yamToFragment(uint256 yam)
external
view
returns (uint256)
{
return _yamToFragment(yam);
}
function fragmentToYam(uint256 value)
external
view
returns (uint256)
{
return _fragmentToYam(value);
}
function _yamToFragment(uint256 yam)
internal
view
returns (uint256)
{
return yam.mul(yamsScalingFactor).div(internalDecimals);
}
function _fragmentToYam(uint256 value)
internal
view
returns (uint256)
{
return value.mul(internalDecimals).div(yamsScalingFactor);
}
// Rescue tokens
function rescueTokens(
address token,
address to,
uint256 amount
)
external
onlyGov
returns (bool)
{
// transfer to
SafeERC20.safeTransfer(IERC20(token), to, amount);
return true;
}
} | balanceOfUnderlying | function balanceOfUnderlying(address who)
external
view
returns (uint256)
{
return _yamBalances[who];
}
| /** @notice Currently returns the internal storage amount
* @param who The address to query.
* @return The underlying balance of the specified address.
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
7729,
7875
]
} | 3,932 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMToken | contract YAMToken is YAMGovernanceToken {
// Modifiers
modifier onlyGov() {
require(msg.sender == gov);
_;
}
modifier onlyRebaser() {
require(msg.sender == rebaser);
_;
}
modifier onlyMinter() {
require(
msg.sender == rebaser
|| msg.sender == gov
|| msg.sender == incentivizer
|| msg.sender == migrator,
"not minter"
);
_;
}
modifier validRecipient(address to) {
require(to != address(0x0));
require(to != address(this));
_;
}
function initialize(
string memory name_,
string memory symbol_,
uint8 decimals_
)
public
{
require(yamsScalingFactor == 0, "already initialized");
name = name_;
symbol = symbol_;
decimals = decimals_;
}
/**
* @notice Computes the current max scaling factor
*/
function maxScalingFactor()
external
view
returns (uint256)
{
return _maxScalingFactor();
}
function _maxScalingFactor()
internal
view
returns (uint256)
{
// scaling factor can only go up to 2**256-1 = initSupply * yamsScalingFactor
// this is used to check if yamsScalingFactor will be too high to compute balances when rebasing.
return uint256(-1) / initSupply;
}
/**
* @notice Mints new tokens, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mint(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mint(to, amount);
return true;
}
function _mint(address to, uint256 amount)
internal
{
if (msg.sender == migrator) {
// migrator directly uses v2 balance for the amount
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
} else {
// increase totalSupply
totalSupply = totalSupply.add(amount);
// get underlying value
uint256 yamValue = _fragmentToYam(amount);
// increase initSupply
initSupply = initSupply.add(yamValue);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(yamValue);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], yamValue);
emit Mint(to, amount);
emit Transfer(address(0), to, amount);
}
}
/**
* @notice Mints new tokens using underlying amount, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mintUnderlying(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mintUnderlying(to, amount);
return true;
}
function _mintUnderlying(address to, uint256 amount)
internal
{
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
}
/**
* @dev Transfer underlying balance to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transferUnderlying(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(value);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(value);
emit Transfer(msg.sender, to, _yamToFragment(value));
_moveDelegates(_delegates[msg.sender], _delegates[to], value);
return true;
}
/* - ERC20 functionality - */
/**
* @dev Transfer tokens to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transfer(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// underlying balance is stored in yams, so divide by current scaling factor
// note, this means as scaling factor grows, dust will be untransferrable.
// minimum transfer value == yamsScalingFactor / 1e24;
// get amount in underlying
uint256 yamValue = _fragmentToYam(value);
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(yamValue);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(msg.sender, to, value);
_moveDelegates(_delegates[msg.sender], _delegates[to], yamValue);
return true;
}
/**
* @dev Transfer tokens from one address to another.
* @param from The address you want to send tokens from.
* @param to The address you want to transfer to.
* @param value The amount of tokens to be transferred.
*/
function transferFrom(address from, address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// decrease allowance
_allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value);
// get value in yams
uint256 yamValue = _fragmentToYam(value);
// sub from from
_yamBalances[from] = _yamBalances[from].sub(yamValue);
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(from, to, value);
_moveDelegates(_delegates[from], _delegates[to], yamValue);
return true;
}
/**
* @param who The address to query.
* @return The balance of the specified address.
*/
function balanceOf(address who)
external
view
returns (uint256)
{
return _yamToFragment(_yamBalances[who]);
}
/** @notice Currently returns the internal storage amount
* @param who The address to query.
* @return The underlying balance of the specified address.
*/
function balanceOfUnderlying(address who)
external
view
returns (uint256)
{
return _yamBalances[who];
}
/**
* @dev Function to check the amount of tokens that an owner has allowed to a spender.
* @param owner_ The address which owns the funds.
* @param spender The address which will spend the funds.
* @return The number of tokens still available for the spender.
*/
function allowance(address owner_, address spender)
external
view
returns (uint256)
{
return _allowedFragments[owner_][spender];
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of
* msg.sender. This method is included for ERC20 compatibility.
* increaseAllowance and decreaseAllowance should be used instead.
* Changing an allowance with this method brings the risk that someone may transfer both
* the old and the new allowance - if they are both greater than zero - if a transfer
* transaction is mined before the later approve() call is mined.
*
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner has allowed to a spender.
* This method should be used instead of approve() to avoid the double approval vulnerability
* described above.
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] =
_allowedFragments[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner has allowed to a spender.
*
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
external
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
// --- Approve by signature ---
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
require(now <= deadline, "YAM/permit-expired");
bytes32 digest =
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
value,
nonces[owner]++,
deadline
)
)
)
);
require(owner != address(0), "YAM/invalid-address-0");
require(owner == ecrecover(digest, v, r, s), "YAM/invalid-permit");
_allowedFragments[owner][spender] = value;
emit Approval(owner, spender, value);
}
/* - Governance Functions - */
/** @notice sets the rebaser
* @param rebaser_ The address of the rebaser contract to use for authentication.
*/
function _setRebaser(address rebaser_)
external
onlyGov
{
address oldRebaser = rebaser;
rebaser = rebaser_;
emit NewRebaser(oldRebaser, rebaser_);
}
/** @notice sets the migrator
* @param migrator_ The address of the migrator contract to use for authentication.
*/
function _setMigrator(address migrator_)
external
onlyGov
{
address oldMigrator = migrator_;
migrator = migrator_;
emit NewMigrator(oldMigrator, migrator_);
}
/** @notice sets the incentivizer
* @param incentivizer_ The address of the rebaser contract to use for authentication.
*/
function _setIncentivizer(address incentivizer_)
external
onlyGov
{
address oldIncentivizer = incentivizer;
incentivizer = incentivizer_;
emit NewIncentivizer(oldIncentivizer, incentivizer_);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the rebaser contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice allows governance to assign delegate to self
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
function assignSelfDelegate(address nonvotingContract)
external
onlyGov
{
address delegate = _delegates[nonvotingContract];
require( delegate == address(0), "!address(0)" );
// assigns delegate to self only
_delegate(nonvotingContract, nonvotingContract);
}
/* - Extras - */
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetRate) / targetRate
* and targetRate is CpiOracleRate / baseCpi
*/
function rebase(
uint256 epoch,
uint256 indexDelta,
bool positive
)
external
onlyRebaser
returns (uint256)
{
// no change
if (indexDelta == 0) {
emit Rebase(epoch, yamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
// for events
uint256 prevYamsScalingFactor = yamsScalingFactor;
if (!positive) {
// negative rebase, decrease scaling factor
yamsScalingFactor = yamsScalingFactor.mul(BASE.sub(indexDelta)).div(BASE);
} else {
// positive reabse, increase scaling factor
uint256 newScalingFactor = yamsScalingFactor.mul(BASE.add(indexDelta)).div(BASE);
if (newScalingFactor < _maxScalingFactor()) {
yamsScalingFactor = newScalingFactor;
} else {
yamsScalingFactor = _maxScalingFactor();
}
}
// update total supply, correctly
totalSupply = _yamToFragment(initSupply);
emit Rebase(epoch, prevYamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
function yamToFragment(uint256 yam)
external
view
returns (uint256)
{
return _yamToFragment(yam);
}
function fragmentToYam(uint256 value)
external
view
returns (uint256)
{
return _fragmentToYam(value);
}
function _yamToFragment(uint256 yam)
internal
view
returns (uint256)
{
return yam.mul(yamsScalingFactor).div(internalDecimals);
}
function _fragmentToYam(uint256 value)
internal
view
returns (uint256)
{
return value.mul(internalDecimals).div(yamsScalingFactor);
}
// Rescue tokens
function rescueTokens(
address token,
address to,
uint256 amount
)
external
onlyGov
returns (bool)
{
// transfer to
SafeERC20.safeTransfer(IERC20(token), to, amount);
return true;
}
} | allowance | function allowance(address owner_, address spender)
external
view
returns (uint256)
{
return _allowedFragments[owner_][spender];
}
| /**
* @dev Function to check the amount of tokens that an owner has allowed to a spender.
* @param owner_ The address which owns the funds.
* @param spender The address which will spend the funds.
* @return The number of tokens still available for the spender.
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
8177,
8358
]
} | 3,933 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMToken | contract YAMToken is YAMGovernanceToken {
// Modifiers
modifier onlyGov() {
require(msg.sender == gov);
_;
}
modifier onlyRebaser() {
require(msg.sender == rebaser);
_;
}
modifier onlyMinter() {
require(
msg.sender == rebaser
|| msg.sender == gov
|| msg.sender == incentivizer
|| msg.sender == migrator,
"not minter"
);
_;
}
modifier validRecipient(address to) {
require(to != address(0x0));
require(to != address(this));
_;
}
function initialize(
string memory name_,
string memory symbol_,
uint8 decimals_
)
public
{
require(yamsScalingFactor == 0, "already initialized");
name = name_;
symbol = symbol_;
decimals = decimals_;
}
/**
* @notice Computes the current max scaling factor
*/
function maxScalingFactor()
external
view
returns (uint256)
{
return _maxScalingFactor();
}
function _maxScalingFactor()
internal
view
returns (uint256)
{
// scaling factor can only go up to 2**256-1 = initSupply * yamsScalingFactor
// this is used to check if yamsScalingFactor will be too high to compute balances when rebasing.
return uint256(-1) / initSupply;
}
/**
* @notice Mints new tokens, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mint(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mint(to, amount);
return true;
}
function _mint(address to, uint256 amount)
internal
{
if (msg.sender == migrator) {
// migrator directly uses v2 balance for the amount
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
} else {
// increase totalSupply
totalSupply = totalSupply.add(amount);
// get underlying value
uint256 yamValue = _fragmentToYam(amount);
// increase initSupply
initSupply = initSupply.add(yamValue);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(yamValue);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], yamValue);
emit Mint(to, amount);
emit Transfer(address(0), to, amount);
}
}
/**
* @notice Mints new tokens using underlying amount, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mintUnderlying(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mintUnderlying(to, amount);
return true;
}
function _mintUnderlying(address to, uint256 amount)
internal
{
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
}
/**
* @dev Transfer underlying balance to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transferUnderlying(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(value);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(value);
emit Transfer(msg.sender, to, _yamToFragment(value));
_moveDelegates(_delegates[msg.sender], _delegates[to], value);
return true;
}
/* - ERC20 functionality - */
/**
* @dev Transfer tokens to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transfer(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// underlying balance is stored in yams, so divide by current scaling factor
// note, this means as scaling factor grows, dust will be untransferrable.
// minimum transfer value == yamsScalingFactor / 1e24;
// get amount in underlying
uint256 yamValue = _fragmentToYam(value);
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(yamValue);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(msg.sender, to, value);
_moveDelegates(_delegates[msg.sender], _delegates[to], yamValue);
return true;
}
/**
* @dev Transfer tokens from one address to another.
* @param from The address you want to send tokens from.
* @param to The address you want to transfer to.
* @param value The amount of tokens to be transferred.
*/
function transferFrom(address from, address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// decrease allowance
_allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value);
// get value in yams
uint256 yamValue = _fragmentToYam(value);
// sub from from
_yamBalances[from] = _yamBalances[from].sub(yamValue);
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(from, to, value);
_moveDelegates(_delegates[from], _delegates[to], yamValue);
return true;
}
/**
* @param who The address to query.
* @return The balance of the specified address.
*/
function balanceOf(address who)
external
view
returns (uint256)
{
return _yamToFragment(_yamBalances[who]);
}
/** @notice Currently returns the internal storage amount
* @param who The address to query.
* @return The underlying balance of the specified address.
*/
function balanceOfUnderlying(address who)
external
view
returns (uint256)
{
return _yamBalances[who];
}
/**
* @dev Function to check the amount of tokens that an owner has allowed to a spender.
* @param owner_ The address which owns the funds.
* @param spender The address which will spend the funds.
* @return The number of tokens still available for the spender.
*/
function allowance(address owner_, address spender)
external
view
returns (uint256)
{
return _allowedFragments[owner_][spender];
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of
* msg.sender. This method is included for ERC20 compatibility.
* increaseAllowance and decreaseAllowance should be used instead.
* Changing an allowance with this method brings the risk that someone may transfer both
* the old and the new allowance - if they are both greater than zero - if a transfer
* transaction is mined before the later approve() call is mined.
*
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner has allowed to a spender.
* This method should be used instead of approve() to avoid the double approval vulnerability
* described above.
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] =
_allowedFragments[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner has allowed to a spender.
*
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
external
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
// --- Approve by signature ---
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
require(now <= deadline, "YAM/permit-expired");
bytes32 digest =
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
value,
nonces[owner]++,
deadline
)
)
)
);
require(owner != address(0), "YAM/invalid-address-0");
require(owner == ecrecover(digest, v, r, s), "YAM/invalid-permit");
_allowedFragments[owner][spender] = value;
emit Approval(owner, spender, value);
}
/* - Governance Functions - */
/** @notice sets the rebaser
* @param rebaser_ The address of the rebaser contract to use for authentication.
*/
function _setRebaser(address rebaser_)
external
onlyGov
{
address oldRebaser = rebaser;
rebaser = rebaser_;
emit NewRebaser(oldRebaser, rebaser_);
}
/** @notice sets the migrator
* @param migrator_ The address of the migrator contract to use for authentication.
*/
function _setMigrator(address migrator_)
external
onlyGov
{
address oldMigrator = migrator_;
migrator = migrator_;
emit NewMigrator(oldMigrator, migrator_);
}
/** @notice sets the incentivizer
* @param incentivizer_ The address of the rebaser contract to use for authentication.
*/
function _setIncentivizer(address incentivizer_)
external
onlyGov
{
address oldIncentivizer = incentivizer;
incentivizer = incentivizer_;
emit NewIncentivizer(oldIncentivizer, incentivizer_);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the rebaser contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice allows governance to assign delegate to self
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
function assignSelfDelegate(address nonvotingContract)
external
onlyGov
{
address delegate = _delegates[nonvotingContract];
require( delegate == address(0), "!address(0)" );
// assigns delegate to self only
_delegate(nonvotingContract, nonvotingContract);
}
/* - Extras - */
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetRate) / targetRate
* and targetRate is CpiOracleRate / baseCpi
*/
function rebase(
uint256 epoch,
uint256 indexDelta,
bool positive
)
external
onlyRebaser
returns (uint256)
{
// no change
if (indexDelta == 0) {
emit Rebase(epoch, yamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
// for events
uint256 prevYamsScalingFactor = yamsScalingFactor;
if (!positive) {
// negative rebase, decrease scaling factor
yamsScalingFactor = yamsScalingFactor.mul(BASE.sub(indexDelta)).div(BASE);
} else {
// positive reabse, increase scaling factor
uint256 newScalingFactor = yamsScalingFactor.mul(BASE.add(indexDelta)).div(BASE);
if (newScalingFactor < _maxScalingFactor()) {
yamsScalingFactor = newScalingFactor;
} else {
yamsScalingFactor = _maxScalingFactor();
}
}
// update total supply, correctly
totalSupply = _yamToFragment(initSupply);
emit Rebase(epoch, prevYamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
function yamToFragment(uint256 yam)
external
view
returns (uint256)
{
return _yamToFragment(yam);
}
function fragmentToYam(uint256 value)
external
view
returns (uint256)
{
return _fragmentToYam(value);
}
function _yamToFragment(uint256 yam)
internal
view
returns (uint256)
{
return yam.mul(yamsScalingFactor).div(internalDecimals);
}
function _fragmentToYam(uint256 value)
internal
view
returns (uint256)
{
return value.mul(internalDecimals).div(yamsScalingFactor);
}
// Rescue tokens
function rescueTokens(
address token,
address to,
uint256 amount
)
external
onlyGov
returns (bool)
{
// transfer to
SafeERC20.safeTransfer(IERC20(token), to, amount);
return true;
}
} | approve | function approve(address spender, uint256 value)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
| /**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of
* msg.sender. This method is included for ERC20 compatibility.
* increaseAllowance and decreaseAllowance should be used instead.
* Changing an allowance with this method brings the risk that someone may transfer both
* the old and the new allowance - if they are both greater than zero - if a transfer
* transaction is mined before the later approve() call is mined.
*
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
8995,
9235
]
} | 3,934 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMToken | contract YAMToken is YAMGovernanceToken {
// Modifiers
modifier onlyGov() {
require(msg.sender == gov);
_;
}
modifier onlyRebaser() {
require(msg.sender == rebaser);
_;
}
modifier onlyMinter() {
require(
msg.sender == rebaser
|| msg.sender == gov
|| msg.sender == incentivizer
|| msg.sender == migrator,
"not minter"
);
_;
}
modifier validRecipient(address to) {
require(to != address(0x0));
require(to != address(this));
_;
}
function initialize(
string memory name_,
string memory symbol_,
uint8 decimals_
)
public
{
require(yamsScalingFactor == 0, "already initialized");
name = name_;
symbol = symbol_;
decimals = decimals_;
}
/**
* @notice Computes the current max scaling factor
*/
function maxScalingFactor()
external
view
returns (uint256)
{
return _maxScalingFactor();
}
function _maxScalingFactor()
internal
view
returns (uint256)
{
// scaling factor can only go up to 2**256-1 = initSupply * yamsScalingFactor
// this is used to check if yamsScalingFactor will be too high to compute balances when rebasing.
return uint256(-1) / initSupply;
}
/**
* @notice Mints new tokens, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mint(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mint(to, amount);
return true;
}
function _mint(address to, uint256 amount)
internal
{
if (msg.sender == migrator) {
// migrator directly uses v2 balance for the amount
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
} else {
// increase totalSupply
totalSupply = totalSupply.add(amount);
// get underlying value
uint256 yamValue = _fragmentToYam(amount);
// increase initSupply
initSupply = initSupply.add(yamValue);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(yamValue);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], yamValue);
emit Mint(to, amount);
emit Transfer(address(0), to, amount);
}
}
/**
* @notice Mints new tokens using underlying amount, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mintUnderlying(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mintUnderlying(to, amount);
return true;
}
function _mintUnderlying(address to, uint256 amount)
internal
{
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
}
/**
* @dev Transfer underlying balance to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transferUnderlying(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(value);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(value);
emit Transfer(msg.sender, to, _yamToFragment(value));
_moveDelegates(_delegates[msg.sender], _delegates[to], value);
return true;
}
/* - ERC20 functionality - */
/**
* @dev Transfer tokens to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transfer(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// underlying balance is stored in yams, so divide by current scaling factor
// note, this means as scaling factor grows, dust will be untransferrable.
// minimum transfer value == yamsScalingFactor / 1e24;
// get amount in underlying
uint256 yamValue = _fragmentToYam(value);
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(yamValue);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(msg.sender, to, value);
_moveDelegates(_delegates[msg.sender], _delegates[to], yamValue);
return true;
}
/**
* @dev Transfer tokens from one address to another.
* @param from The address you want to send tokens from.
* @param to The address you want to transfer to.
* @param value The amount of tokens to be transferred.
*/
function transferFrom(address from, address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// decrease allowance
_allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value);
// get value in yams
uint256 yamValue = _fragmentToYam(value);
// sub from from
_yamBalances[from] = _yamBalances[from].sub(yamValue);
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(from, to, value);
_moveDelegates(_delegates[from], _delegates[to], yamValue);
return true;
}
/**
* @param who The address to query.
* @return The balance of the specified address.
*/
function balanceOf(address who)
external
view
returns (uint256)
{
return _yamToFragment(_yamBalances[who]);
}
/** @notice Currently returns the internal storage amount
* @param who The address to query.
* @return The underlying balance of the specified address.
*/
function balanceOfUnderlying(address who)
external
view
returns (uint256)
{
return _yamBalances[who];
}
/**
* @dev Function to check the amount of tokens that an owner has allowed to a spender.
* @param owner_ The address which owns the funds.
* @param spender The address which will spend the funds.
* @return The number of tokens still available for the spender.
*/
function allowance(address owner_, address spender)
external
view
returns (uint256)
{
return _allowedFragments[owner_][spender];
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of
* msg.sender. This method is included for ERC20 compatibility.
* increaseAllowance and decreaseAllowance should be used instead.
* Changing an allowance with this method brings the risk that someone may transfer both
* the old and the new allowance - if they are both greater than zero - if a transfer
* transaction is mined before the later approve() call is mined.
*
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner has allowed to a spender.
* This method should be used instead of approve() to avoid the double approval vulnerability
* described above.
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] =
_allowedFragments[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner has allowed to a spender.
*
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
external
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
// --- Approve by signature ---
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
require(now <= deadline, "YAM/permit-expired");
bytes32 digest =
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
value,
nonces[owner]++,
deadline
)
)
)
);
require(owner != address(0), "YAM/invalid-address-0");
require(owner == ecrecover(digest, v, r, s), "YAM/invalid-permit");
_allowedFragments[owner][spender] = value;
emit Approval(owner, spender, value);
}
/* - Governance Functions - */
/** @notice sets the rebaser
* @param rebaser_ The address of the rebaser contract to use for authentication.
*/
function _setRebaser(address rebaser_)
external
onlyGov
{
address oldRebaser = rebaser;
rebaser = rebaser_;
emit NewRebaser(oldRebaser, rebaser_);
}
/** @notice sets the migrator
* @param migrator_ The address of the migrator contract to use for authentication.
*/
function _setMigrator(address migrator_)
external
onlyGov
{
address oldMigrator = migrator_;
migrator = migrator_;
emit NewMigrator(oldMigrator, migrator_);
}
/** @notice sets the incentivizer
* @param incentivizer_ The address of the rebaser contract to use for authentication.
*/
function _setIncentivizer(address incentivizer_)
external
onlyGov
{
address oldIncentivizer = incentivizer;
incentivizer = incentivizer_;
emit NewIncentivizer(oldIncentivizer, incentivizer_);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the rebaser contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice allows governance to assign delegate to self
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
function assignSelfDelegate(address nonvotingContract)
external
onlyGov
{
address delegate = _delegates[nonvotingContract];
require( delegate == address(0), "!address(0)" );
// assigns delegate to self only
_delegate(nonvotingContract, nonvotingContract);
}
/* - Extras - */
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetRate) / targetRate
* and targetRate is CpiOracleRate / baseCpi
*/
function rebase(
uint256 epoch,
uint256 indexDelta,
bool positive
)
external
onlyRebaser
returns (uint256)
{
// no change
if (indexDelta == 0) {
emit Rebase(epoch, yamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
// for events
uint256 prevYamsScalingFactor = yamsScalingFactor;
if (!positive) {
// negative rebase, decrease scaling factor
yamsScalingFactor = yamsScalingFactor.mul(BASE.sub(indexDelta)).div(BASE);
} else {
// positive reabse, increase scaling factor
uint256 newScalingFactor = yamsScalingFactor.mul(BASE.add(indexDelta)).div(BASE);
if (newScalingFactor < _maxScalingFactor()) {
yamsScalingFactor = newScalingFactor;
} else {
yamsScalingFactor = _maxScalingFactor();
}
}
// update total supply, correctly
totalSupply = _yamToFragment(initSupply);
emit Rebase(epoch, prevYamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
function yamToFragment(uint256 yam)
external
view
returns (uint256)
{
return _yamToFragment(yam);
}
function fragmentToYam(uint256 value)
external
view
returns (uint256)
{
return _fragmentToYam(value);
}
function _yamToFragment(uint256 yam)
internal
view
returns (uint256)
{
return yam.mul(yamsScalingFactor).div(internalDecimals);
}
function _fragmentToYam(uint256 value)
internal
view
returns (uint256)
{
return value.mul(internalDecimals).div(yamsScalingFactor);
}
// Rescue tokens
function rescueTokens(
address token,
address to,
uint256 amount
)
external
onlyGov
returns (bool)
{
// transfer to
SafeERC20.safeTransfer(IERC20(token), to, amount);
return true;
}
} | increaseAllowance | function increaseAllowance(address spender, uint256 addedValue)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] =
_allowedFragments[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
| /**
* @dev Increase the amount of tokens that an owner has allowed to a spender.
* This method should be used instead of approve() to avoid the double approval vulnerability
* described above.
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
9603,
9953
]
} | 3,935 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMToken | contract YAMToken is YAMGovernanceToken {
// Modifiers
modifier onlyGov() {
require(msg.sender == gov);
_;
}
modifier onlyRebaser() {
require(msg.sender == rebaser);
_;
}
modifier onlyMinter() {
require(
msg.sender == rebaser
|| msg.sender == gov
|| msg.sender == incentivizer
|| msg.sender == migrator,
"not minter"
);
_;
}
modifier validRecipient(address to) {
require(to != address(0x0));
require(to != address(this));
_;
}
function initialize(
string memory name_,
string memory symbol_,
uint8 decimals_
)
public
{
require(yamsScalingFactor == 0, "already initialized");
name = name_;
symbol = symbol_;
decimals = decimals_;
}
/**
* @notice Computes the current max scaling factor
*/
function maxScalingFactor()
external
view
returns (uint256)
{
return _maxScalingFactor();
}
function _maxScalingFactor()
internal
view
returns (uint256)
{
// scaling factor can only go up to 2**256-1 = initSupply * yamsScalingFactor
// this is used to check if yamsScalingFactor will be too high to compute balances when rebasing.
return uint256(-1) / initSupply;
}
/**
* @notice Mints new tokens, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mint(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mint(to, amount);
return true;
}
function _mint(address to, uint256 amount)
internal
{
if (msg.sender == migrator) {
// migrator directly uses v2 balance for the amount
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
} else {
// increase totalSupply
totalSupply = totalSupply.add(amount);
// get underlying value
uint256 yamValue = _fragmentToYam(amount);
// increase initSupply
initSupply = initSupply.add(yamValue);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(yamValue);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], yamValue);
emit Mint(to, amount);
emit Transfer(address(0), to, amount);
}
}
/**
* @notice Mints new tokens using underlying amount, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mintUnderlying(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mintUnderlying(to, amount);
return true;
}
function _mintUnderlying(address to, uint256 amount)
internal
{
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
}
/**
* @dev Transfer underlying balance to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transferUnderlying(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(value);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(value);
emit Transfer(msg.sender, to, _yamToFragment(value));
_moveDelegates(_delegates[msg.sender], _delegates[to], value);
return true;
}
/* - ERC20 functionality - */
/**
* @dev Transfer tokens to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transfer(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// underlying balance is stored in yams, so divide by current scaling factor
// note, this means as scaling factor grows, dust will be untransferrable.
// minimum transfer value == yamsScalingFactor / 1e24;
// get amount in underlying
uint256 yamValue = _fragmentToYam(value);
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(yamValue);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(msg.sender, to, value);
_moveDelegates(_delegates[msg.sender], _delegates[to], yamValue);
return true;
}
/**
* @dev Transfer tokens from one address to another.
* @param from The address you want to send tokens from.
* @param to The address you want to transfer to.
* @param value The amount of tokens to be transferred.
*/
function transferFrom(address from, address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// decrease allowance
_allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value);
// get value in yams
uint256 yamValue = _fragmentToYam(value);
// sub from from
_yamBalances[from] = _yamBalances[from].sub(yamValue);
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(from, to, value);
_moveDelegates(_delegates[from], _delegates[to], yamValue);
return true;
}
/**
* @param who The address to query.
* @return The balance of the specified address.
*/
function balanceOf(address who)
external
view
returns (uint256)
{
return _yamToFragment(_yamBalances[who]);
}
/** @notice Currently returns the internal storage amount
* @param who The address to query.
* @return The underlying balance of the specified address.
*/
function balanceOfUnderlying(address who)
external
view
returns (uint256)
{
return _yamBalances[who];
}
/**
* @dev Function to check the amount of tokens that an owner has allowed to a spender.
* @param owner_ The address which owns the funds.
* @param spender The address which will spend the funds.
* @return The number of tokens still available for the spender.
*/
function allowance(address owner_, address spender)
external
view
returns (uint256)
{
return _allowedFragments[owner_][spender];
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of
* msg.sender. This method is included for ERC20 compatibility.
* increaseAllowance and decreaseAllowance should be used instead.
* Changing an allowance with this method brings the risk that someone may transfer both
* the old and the new allowance - if they are both greater than zero - if a transfer
* transaction is mined before the later approve() call is mined.
*
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner has allowed to a spender.
* This method should be used instead of approve() to avoid the double approval vulnerability
* described above.
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] =
_allowedFragments[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner has allowed to a spender.
*
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
external
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
// --- Approve by signature ---
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
require(now <= deadline, "YAM/permit-expired");
bytes32 digest =
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
value,
nonces[owner]++,
deadline
)
)
)
);
require(owner != address(0), "YAM/invalid-address-0");
require(owner == ecrecover(digest, v, r, s), "YAM/invalid-permit");
_allowedFragments[owner][spender] = value;
emit Approval(owner, spender, value);
}
/* - Governance Functions - */
/** @notice sets the rebaser
* @param rebaser_ The address of the rebaser contract to use for authentication.
*/
function _setRebaser(address rebaser_)
external
onlyGov
{
address oldRebaser = rebaser;
rebaser = rebaser_;
emit NewRebaser(oldRebaser, rebaser_);
}
/** @notice sets the migrator
* @param migrator_ The address of the migrator contract to use for authentication.
*/
function _setMigrator(address migrator_)
external
onlyGov
{
address oldMigrator = migrator_;
migrator = migrator_;
emit NewMigrator(oldMigrator, migrator_);
}
/** @notice sets the incentivizer
* @param incentivizer_ The address of the rebaser contract to use for authentication.
*/
function _setIncentivizer(address incentivizer_)
external
onlyGov
{
address oldIncentivizer = incentivizer;
incentivizer = incentivizer_;
emit NewIncentivizer(oldIncentivizer, incentivizer_);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the rebaser contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice allows governance to assign delegate to self
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
function assignSelfDelegate(address nonvotingContract)
external
onlyGov
{
address delegate = _delegates[nonvotingContract];
require( delegate == address(0), "!address(0)" );
// assigns delegate to self only
_delegate(nonvotingContract, nonvotingContract);
}
/* - Extras - */
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetRate) / targetRate
* and targetRate is CpiOracleRate / baseCpi
*/
function rebase(
uint256 epoch,
uint256 indexDelta,
bool positive
)
external
onlyRebaser
returns (uint256)
{
// no change
if (indexDelta == 0) {
emit Rebase(epoch, yamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
// for events
uint256 prevYamsScalingFactor = yamsScalingFactor;
if (!positive) {
// negative rebase, decrease scaling factor
yamsScalingFactor = yamsScalingFactor.mul(BASE.sub(indexDelta)).div(BASE);
} else {
// positive reabse, increase scaling factor
uint256 newScalingFactor = yamsScalingFactor.mul(BASE.add(indexDelta)).div(BASE);
if (newScalingFactor < _maxScalingFactor()) {
yamsScalingFactor = newScalingFactor;
} else {
yamsScalingFactor = _maxScalingFactor();
}
}
// update total supply, correctly
totalSupply = _yamToFragment(initSupply);
emit Rebase(epoch, prevYamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
function yamToFragment(uint256 yam)
external
view
returns (uint256)
{
return _yamToFragment(yam);
}
function fragmentToYam(uint256 value)
external
view
returns (uint256)
{
return _fragmentToYam(value);
}
function _yamToFragment(uint256 yam)
internal
view
returns (uint256)
{
return yam.mul(yamsScalingFactor).div(internalDecimals);
}
function _fragmentToYam(uint256 value)
internal
view
returns (uint256)
{
return value.mul(internalDecimals).div(yamsScalingFactor);
}
// Rescue tokens
function rescueTokens(
address token,
address to,
uint256 amount
)
external
onlyGov
returns (bool)
{
// transfer to
SafeERC20.safeTransfer(IERC20(token), to, amount);
return true;
}
} | decreaseAllowance | function decreaseAllowance(address spender, uint256 subtractedValue)
external
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
| /**
* @dev Decrease the amount of tokens that an owner has allowed to a spender.
*
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
10210,
10729
]
} | 3,936 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMToken | contract YAMToken is YAMGovernanceToken {
// Modifiers
modifier onlyGov() {
require(msg.sender == gov);
_;
}
modifier onlyRebaser() {
require(msg.sender == rebaser);
_;
}
modifier onlyMinter() {
require(
msg.sender == rebaser
|| msg.sender == gov
|| msg.sender == incentivizer
|| msg.sender == migrator,
"not minter"
);
_;
}
modifier validRecipient(address to) {
require(to != address(0x0));
require(to != address(this));
_;
}
function initialize(
string memory name_,
string memory symbol_,
uint8 decimals_
)
public
{
require(yamsScalingFactor == 0, "already initialized");
name = name_;
symbol = symbol_;
decimals = decimals_;
}
/**
* @notice Computes the current max scaling factor
*/
function maxScalingFactor()
external
view
returns (uint256)
{
return _maxScalingFactor();
}
function _maxScalingFactor()
internal
view
returns (uint256)
{
// scaling factor can only go up to 2**256-1 = initSupply * yamsScalingFactor
// this is used to check if yamsScalingFactor will be too high to compute balances when rebasing.
return uint256(-1) / initSupply;
}
/**
* @notice Mints new tokens, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mint(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mint(to, amount);
return true;
}
function _mint(address to, uint256 amount)
internal
{
if (msg.sender == migrator) {
// migrator directly uses v2 balance for the amount
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
} else {
// increase totalSupply
totalSupply = totalSupply.add(amount);
// get underlying value
uint256 yamValue = _fragmentToYam(amount);
// increase initSupply
initSupply = initSupply.add(yamValue);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(yamValue);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], yamValue);
emit Mint(to, amount);
emit Transfer(address(0), to, amount);
}
}
/**
* @notice Mints new tokens using underlying amount, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mintUnderlying(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mintUnderlying(to, amount);
return true;
}
function _mintUnderlying(address to, uint256 amount)
internal
{
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
}
/**
* @dev Transfer underlying balance to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transferUnderlying(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(value);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(value);
emit Transfer(msg.sender, to, _yamToFragment(value));
_moveDelegates(_delegates[msg.sender], _delegates[to], value);
return true;
}
/* - ERC20 functionality - */
/**
* @dev Transfer tokens to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transfer(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// underlying balance is stored in yams, so divide by current scaling factor
// note, this means as scaling factor grows, dust will be untransferrable.
// minimum transfer value == yamsScalingFactor / 1e24;
// get amount in underlying
uint256 yamValue = _fragmentToYam(value);
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(yamValue);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(msg.sender, to, value);
_moveDelegates(_delegates[msg.sender], _delegates[to], yamValue);
return true;
}
/**
* @dev Transfer tokens from one address to another.
* @param from The address you want to send tokens from.
* @param to The address you want to transfer to.
* @param value The amount of tokens to be transferred.
*/
function transferFrom(address from, address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// decrease allowance
_allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value);
// get value in yams
uint256 yamValue = _fragmentToYam(value);
// sub from from
_yamBalances[from] = _yamBalances[from].sub(yamValue);
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(from, to, value);
_moveDelegates(_delegates[from], _delegates[to], yamValue);
return true;
}
/**
* @param who The address to query.
* @return The balance of the specified address.
*/
function balanceOf(address who)
external
view
returns (uint256)
{
return _yamToFragment(_yamBalances[who]);
}
/** @notice Currently returns the internal storage amount
* @param who The address to query.
* @return The underlying balance of the specified address.
*/
function balanceOfUnderlying(address who)
external
view
returns (uint256)
{
return _yamBalances[who];
}
/**
* @dev Function to check the amount of tokens that an owner has allowed to a spender.
* @param owner_ The address which owns the funds.
* @param spender The address which will spend the funds.
* @return The number of tokens still available for the spender.
*/
function allowance(address owner_, address spender)
external
view
returns (uint256)
{
return _allowedFragments[owner_][spender];
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of
* msg.sender. This method is included for ERC20 compatibility.
* increaseAllowance and decreaseAllowance should be used instead.
* Changing an allowance with this method brings the risk that someone may transfer both
* the old and the new allowance - if they are both greater than zero - if a transfer
* transaction is mined before the later approve() call is mined.
*
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner has allowed to a spender.
* This method should be used instead of approve() to avoid the double approval vulnerability
* described above.
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] =
_allowedFragments[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner has allowed to a spender.
*
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
external
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
// --- Approve by signature ---
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
require(now <= deadline, "YAM/permit-expired");
bytes32 digest =
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
value,
nonces[owner]++,
deadline
)
)
)
);
require(owner != address(0), "YAM/invalid-address-0");
require(owner == ecrecover(digest, v, r, s), "YAM/invalid-permit");
_allowedFragments[owner][spender] = value;
emit Approval(owner, spender, value);
}
/* - Governance Functions - */
/** @notice sets the rebaser
* @param rebaser_ The address of the rebaser contract to use for authentication.
*/
function _setRebaser(address rebaser_)
external
onlyGov
{
address oldRebaser = rebaser;
rebaser = rebaser_;
emit NewRebaser(oldRebaser, rebaser_);
}
/** @notice sets the migrator
* @param migrator_ The address of the migrator contract to use for authentication.
*/
function _setMigrator(address migrator_)
external
onlyGov
{
address oldMigrator = migrator_;
migrator = migrator_;
emit NewMigrator(oldMigrator, migrator_);
}
/** @notice sets the incentivizer
* @param incentivizer_ The address of the rebaser contract to use for authentication.
*/
function _setIncentivizer(address incentivizer_)
external
onlyGov
{
address oldIncentivizer = incentivizer;
incentivizer = incentivizer_;
emit NewIncentivizer(oldIncentivizer, incentivizer_);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the rebaser contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice allows governance to assign delegate to self
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
function assignSelfDelegate(address nonvotingContract)
external
onlyGov
{
address delegate = _delegates[nonvotingContract];
require( delegate == address(0), "!address(0)" );
// assigns delegate to self only
_delegate(nonvotingContract, nonvotingContract);
}
/* - Extras - */
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetRate) / targetRate
* and targetRate is CpiOracleRate / baseCpi
*/
function rebase(
uint256 epoch,
uint256 indexDelta,
bool positive
)
external
onlyRebaser
returns (uint256)
{
// no change
if (indexDelta == 0) {
emit Rebase(epoch, yamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
// for events
uint256 prevYamsScalingFactor = yamsScalingFactor;
if (!positive) {
// negative rebase, decrease scaling factor
yamsScalingFactor = yamsScalingFactor.mul(BASE.sub(indexDelta)).div(BASE);
} else {
// positive reabse, increase scaling factor
uint256 newScalingFactor = yamsScalingFactor.mul(BASE.add(indexDelta)).div(BASE);
if (newScalingFactor < _maxScalingFactor()) {
yamsScalingFactor = newScalingFactor;
} else {
yamsScalingFactor = _maxScalingFactor();
}
}
// update total supply, correctly
totalSupply = _yamToFragment(initSupply);
emit Rebase(epoch, prevYamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
function yamToFragment(uint256 yam)
external
view
returns (uint256)
{
return _yamToFragment(yam);
}
function fragmentToYam(uint256 value)
external
view
returns (uint256)
{
return _fragmentToYam(value);
}
function _yamToFragment(uint256 yam)
internal
view
returns (uint256)
{
return yam.mul(yamsScalingFactor).div(internalDecimals);
}
function _fragmentToYam(uint256 value)
internal
view
returns (uint256)
{
return value.mul(internalDecimals).div(yamsScalingFactor);
}
// Rescue tokens
function rescueTokens(
address token,
address to,
uint256 amount
)
external
onlyGov
returns (bool)
{
// transfer to
SafeERC20.safeTransfer(IERC20(token), to, amount);
return true;
}
} | permit | function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
require(now <= deadline, "YAM/permit-expired");
bytes32 digest =
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
value,
nonces[owner]++,
deadline
)
)
)
);
require(owner != address(0), "YAM/invalid-address-0");
require(owner == ecrecover(digest, v, r, s), "YAM/invalid-permit");
_allowedFragments[owner][spender] = value;
emit Approval(owner, spender, value);
}
| // --- Approve by signature --- | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
10771,
11841
]
} | 3,937 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMToken | contract YAMToken is YAMGovernanceToken {
// Modifiers
modifier onlyGov() {
require(msg.sender == gov);
_;
}
modifier onlyRebaser() {
require(msg.sender == rebaser);
_;
}
modifier onlyMinter() {
require(
msg.sender == rebaser
|| msg.sender == gov
|| msg.sender == incentivizer
|| msg.sender == migrator,
"not minter"
);
_;
}
modifier validRecipient(address to) {
require(to != address(0x0));
require(to != address(this));
_;
}
function initialize(
string memory name_,
string memory symbol_,
uint8 decimals_
)
public
{
require(yamsScalingFactor == 0, "already initialized");
name = name_;
symbol = symbol_;
decimals = decimals_;
}
/**
* @notice Computes the current max scaling factor
*/
function maxScalingFactor()
external
view
returns (uint256)
{
return _maxScalingFactor();
}
function _maxScalingFactor()
internal
view
returns (uint256)
{
// scaling factor can only go up to 2**256-1 = initSupply * yamsScalingFactor
// this is used to check if yamsScalingFactor will be too high to compute balances when rebasing.
return uint256(-1) / initSupply;
}
/**
* @notice Mints new tokens, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mint(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mint(to, amount);
return true;
}
function _mint(address to, uint256 amount)
internal
{
if (msg.sender == migrator) {
// migrator directly uses v2 balance for the amount
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
} else {
// increase totalSupply
totalSupply = totalSupply.add(amount);
// get underlying value
uint256 yamValue = _fragmentToYam(amount);
// increase initSupply
initSupply = initSupply.add(yamValue);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(yamValue);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], yamValue);
emit Mint(to, amount);
emit Transfer(address(0), to, amount);
}
}
/**
* @notice Mints new tokens using underlying amount, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mintUnderlying(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mintUnderlying(to, amount);
return true;
}
function _mintUnderlying(address to, uint256 amount)
internal
{
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
}
/**
* @dev Transfer underlying balance to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transferUnderlying(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(value);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(value);
emit Transfer(msg.sender, to, _yamToFragment(value));
_moveDelegates(_delegates[msg.sender], _delegates[to], value);
return true;
}
/* - ERC20 functionality - */
/**
* @dev Transfer tokens to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transfer(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// underlying balance is stored in yams, so divide by current scaling factor
// note, this means as scaling factor grows, dust will be untransferrable.
// minimum transfer value == yamsScalingFactor / 1e24;
// get amount in underlying
uint256 yamValue = _fragmentToYam(value);
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(yamValue);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(msg.sender, to, value);
_moveDelegates(_delegates[msg.sender], _delegates[to], yamValue);
return true;
}
/**
* @dev Transfer tokens from one address to another.
* @param from The address you want to send tokens from.
* @param to The address you want to transfer to.
* @param value The amount of tokens to be transferred.
*/
function transferFrom(address from, address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// decrease allowance
_allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value);
// get value in yams
uint256 yamValue = _fragmentToYam(value);
// sub from from
_yamBalances[from] = _yamBalances[from].sub(yamValue);
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(from, to, value);
_moveDelegates(_delegates[from], _delegates[to], yamValue);
return true;
}
/**
* @param who The address to query.
* @return The balance of the specified address.
*/
function balanceOf(address who)
external
view
returns (uint256)
{
return _yamToFragment(_yamBalances[who]);
}
/** @notice Currently returns the internal storage amount
* @param who The address to query.
* @return The underlying balance of the specified address.
*/
function balanceOfUnderlying(address who)
external
view
returns (uint256)
{
return _yamBalances[who];
}
/**
* @dev Function to check the amount of tokens that an owner has allowed to a spender.
* @param owner_ The address which owns the funds.
* @param spender The address which will spend the funds.
* @return The number of tokens still available for the spender.
*/
function allowance(address owner_, address spender)
external
view
returns (uint256)
{
return _allowedFragments[owner_][spender];
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of
* msg.sender. This method is included for ERC20 compatibility.
* increaseAllowance and decreaseAllowance should be used instead.
* Changing an allowance with this method brings the risk that someone may transfer both
* the old and the new allowance - if they are both greater than zero - if a transfer
* transaction is mined before the later approve() call is mined.
*
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner has allowed to a spender.
* This method should be used instead of approve() to avoid the double approval vulnerability
* described above.
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] =
_allowedFragments[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner has allowed to a spender.
*
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
external
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
// --- Approve by signature ---
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
require(now <= deadline, "YAM/permit-expired");
bytes32 digest =
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
value,
nonces[owner]++,
deadline
)
)
)
);
require(owner != address(0), "YAM/invalid-address-0");
require(owner == ecrecover(digest, v, r, s), "YAM/invalid-permit");
_allowedFragments[owner][spender] = value;
emit Approval(owner, spender, value);
}
/* - Governance Functions - */
/** @notice sets the rebaser
* @param rebaser_ The address of the rebaser contract to use for authentication.
*/
function _setRebaser(address rebaser_)
external
onlyGov
{
address oldRebaser = rebaser;
rebaser = rebaser_;
emit NewRebaser(oldRebaser, rebaser_);
}
/** @notice sets the migrator
* @param migrator_ The address of the migrator contract to use for authentication.
*/
function _setMigrator(address migrator_)
external
onlyGov
{
address oldMigrator = migrator_;
migrator = migrator_;
emit NewMigrator(oldMigrator, migrator_);
}
/** @notice sets the incentivizer
* @param incentivizer_ The address of the rebaser contract to use for authentication.
*/
function _setIncentivizer(address incentivizer_)
external
onlyGov
{
address oldIncentivizer = incentivizer;
incentivizer = incentivizer_;
emit NewIncentivizer(oldIncentivizer, incentivizer_);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the rebaser contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice allows governance to assign delegate to self
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
function assignSelfDelegate(address nonvotingContract)
external
onlyGov
{
address delegate = _delegates[nonvotingContract];
require( delegate == address(0), "!address(0)" );
// assigns delegate to self only
_delegate(nonvotingContract, nonvotingContract);
}
/* - Extras - */
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetRate) / targetRate
* and targetRate is CpiOracleRate / baseCpi
*/
function rebase(
uint256 epoch,
uint256 indexDelta,
bool positive
)
external
onlyRebaser
returns (uint256)
{
// no change
if (indexDelta == 0) {
emit Rebase(epoch, yamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
// for events
uint256 prevYamsScalingFactor = yamsScalingFactor;
if (!positive) {
// negative rebase, decrease scaling factor
yamsScalingFactor = yamsScalingFactor.mul(BASE.sub(indexDelta)).div(BASE);
} else {
// positive reabse, increase scaling factor
uint256 newScalingFactor = yamsScalingFactor.mul(BASE.add(indexDelta)).div(BASE);
if (newScalingFactor < _maxScalingFactor()) {
yamsScalingFactor = newScalingFactor;
} else {
yamsScalingFactor = _maxScalingFactor();
}
}
// update total supply, correctly
totalSupply = _yamToFragment(initSupply);
emit Rebase(epoch, prevYamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
function yamToFragment(uint256 yam)
external
view
returns (uint256)
{
return _yamToFragment(yam);
}
function fragmentToYam(uint256 value)
external
view
returns (uint256)
{
return _fragmentToYam(value);
}
function _yamToFragment(uint256 yam)
internal
view
returns (uint256)
{
return yam.mul(yamsScalingFactor).div(internalDecimals);
}
function _fragmentToYam(uint256 value)
internal
view
returns (uint256)
{
return value.mul(internalDecimals).div(yamsScalingFactor);
}
// Rescue tokens
function rescueTokens(
address token,
address to,
uint256 amount
)
external
onlyGov
returns (bool)
{
// transfer to
SafeERC20.safeTransfer(IERC20(token), to, amount);
return true;
}
} | _setRebaser | function _setRebaser(address rebaser_)
external
onlyGov
{
address oldRebaser = rebaser;
rebaser = rebaser_;
emit NewRebaser(oldRebaser, rebaser_);
}
| /** @notice sets the rebaser
* @param rebaser_ The address of the rebaser contract to use for authentication.
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
12012,
12220
]
} | 3,938 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMToken | contract YAMToken is YAMGovernanceToken {
// Modifiers
modifier onlyGov() {
require(msg.sender == gov);
_;
}
modifier onlyRebaser() {
require(msg.sender == rebaser);
_;
}
modifier onlyMinter() {
require(
msg.sender == rebaser
|| msg.sender == gov
|| msg.sender == incentivizer
|| msg.sender == migrator,
"not minter"
);
_;
}
modifier validRecipient(address to) {
require(to != address(0x0));
require(to != address(this));
_;
}
function initialize(
string memory name_,
string memory symbol_,
uint8 decimals_
)
public
{
require(yamsScalingFactor == 0, "already initialized");
name = name_;
symbol = symbol_;
decimals = decimals_;
}
/**
* @notice Computes the current max scaling factor
*/
function maxScalingFactor()
external
view
returns (uint256)
{
return _maxScalingFactor();
}
function _maxScalingFactor()
internal
view
returns (uint256)
{
// scaling factor can only go up to 2**256-1 = initSupply * yamsScalingFactor
// this is used to check if yamsScalingFactor will be too high to compute balances when rebasing.
return uint256(-1) / initSupply;
}
/**
* @notice Mints new tokens, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mint(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mint(to, amount);
return true;
}
function _mint(address to, uint256 amount)
internal
{
if (msg.sender == migrator) {
// migrator directly uses v2 balance for the amount
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
} else {
// increase totalSupply
totalSupply = totalSupply.add(amount);
// get underlying value
uint256 yamValue = _fragmentToYam(amount);
// increase initSupply
initSupply = initSupply.add(yamValue);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(yamValue);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], yamValue);
emit Mint(to, amount);
emit Transfer(address(0), to, amount);
}
}
/**
* @notice Mints new tokens using underlying amount, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mintUnderlying(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mintUnderlying(to, amount);
return true;
}
function _mintUnderlying(address to, uint256 amount)
internal
{
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
}
/**
* @dev Transfer underlying balance to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transferUnderlying(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(value);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(value);
emit Transfer(msg.sender, to, _yamToFragment(value));
_moveDelegates(_delegates[msg.sender], _delegates[to], value);
return true;
}
/* - ERC20 functionality - */
/**
* @dev Transfer tokens to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transfer(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// underlying balance is stored in yams, so divide by current scaling factor
// note, this means as scaling factor grows, dust will be untransferrable.
// minimum transfer value == yamsScalingFactor / 1e24;
// get amount in underlying
uint256 yamValue = _fragmentToYam(value);
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(yamValue);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(msg.sender, to, value);
_moveDelegates(_delegates[msg.sender], _delegates[to], yamValue);
return true;
}
/**
* @dev Transfer tokens from one address to another.
* @param from The address you want to send tokens from.
* @param to The address you want to transfer to.
* @param value The amount of tokens to be transferred.
*/
function transferFrom(address from, address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// decrease allowance
_allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value);
// get value in yams
uint256 yamValue = _fragmentToYam(value);
// sub from from
_yamBalances[from] = _yamBalances[from].sub(yamValue);
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(from, to, value);
_moveDelegates(_delegates[from], _delegates[to], yamValue);
return true;
}
/**
* @param who The address to query.
* @return The balance of the specified address.
*/
function balanceOf(address who)
external
view
returns (uint256)
{
return _yamToFragment(_yamBalances[who]);
}
/** @notice Currently returns the internal storage amount
* @param who The address to query.
* @return The underlying balance of the specified address.
*/
function balanceOfUnderlying(address who)
external
view
returns (uint256)
{
return _yamBalances[who];
}
/**
* @dev Function to check the amount of tokens that an owner has allowed to a spender.
* @param owner_ The address which owns the funds.
* @param spender The address which will spend the funds.
* @return The number of tokens still available for the spender.
*/
function allowance(address owner_, address spender)
external
view
returns (uint256)
{
return _allowedFragments[owner_][spender];
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of
* msg.sender. This method is included for ERC20 compatibility.
* increaseAllowance and decreaseAllowance should be used instead.
* Changing an allowance with this method brings the risk that someone may transfer both
* the old and the new allowance - if they are both greater than zero - if a transfer
* transaction is mined before the later approve() call is mined.
*
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner has allowed to a spender.
* This method should be used instead of approve() to avoid the double approval vulnerability
* described above.
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] =
_allowedFragments[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner has allowed to a spender.
*
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
external
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
// --- Approve by signature ---
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
require(now <= deadline, "YAM/permit-expired");
bytes32 digest =
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
value,
nonces[owner]++,
deadline
)
)
)
);
require(owner != address(0), "YAM/invalid-address-0");
require(owner == ecrecover(digest, v, r, s), "YAM/invalid-permit");
_allowedFragments[owner][spender] = value;
emit Approval(owner, spender, value);
}
/* - Governance Functions - */
/** @notice sets the rebaser
* @param rebaser_ The address of the rebaser contract to use for authentication.
*/
function _setRebaser(address rebaser_)
external
onlyGov
{
address oldRebaser = rebaser;
rebaser = rebaser_;
emit NewRebaser(oldRebaser, rebaser_);
}
/** @notice sets the migrator
* @param migrator_ The address of the migrator contract to use for authentication.
*/
function _setMigrator(address migrator_)
external
onlyGov
{
address oldMigrator = migrator_;
migrator = migrator_;
emit NewMigrator(oldMigrator, migrator_);
}
/** @notice sets the incentivizer
* @param incentivizer_ The address of the rebaser contract to use for authentication.
*/
function _setIncentivizer(address incentivizer_)
external
onlyGov
{
address oldIncentivizer = incentivizer;
incentivizer = incentivizer_;
emit NewIncentivizer(oldIncentivizer, incentivizer_);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the rebaser contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice allows governance to assign delegate to self
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
function assignSelfDelegate(address nonvotingContract)
external
onlyGov
{
address delegate = _delegates[nonvotingContract];
require( delegate == address(0), "!address(0)" );
// assigns delegate to self only
_delegate(nonvotingContract, nonvotingContract);
}
/* - Extras - */
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetRate) / targetRate
* and targetRate is CpiOracleRate / baseCpi
*/
function rebase(
uint256 epoch,
uint256 indexDelta,
bool positive
)
external
onlyRebaser
returns (uint256)
{
// no change
if (indexDelta == 0) {
emit Rebase(epoch, yamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
// for events
uint256 prevYamsScalingFactor = yamsScalingFactor;
if (!positive) {
// negative rebase, decrease scaling factor
yamsScalingFactor = yamsScalingFactor.mul(BASE.sub(indexDelta)).div(BASE);
} else {
// positive reabse, increase scaling factor
uint256 newScalingFactor = yamsScalingFactor.mul(BASE.add(indexDelta)).div(BASE);
if (newScalingFactor < _maxScalingFactor()) {
yamsScalingFactor = newScalingFactor;
} else {
yamsScalingFactor = _maxScalingFactor();
}
}
// update total supply, correctly
totalSupply = _yamToFragment(initSupply);
emit Rebase(epoch, prevYamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
function yamToFragment(uint256 yam)
external
view
returns (uint256)
{
return _yamToFragment(yam);
}
function fragmentToYam(uint256 value)
external
view
returns (uint256)
{
return _fragmentToYam(value);
}
function _yamToFragment(uint256 yam)
internal
view
returns (uint256)
{
return yam.mul(yamsScalingFactor).div(internalDecimals);
}
function _fragmentToYam(uint256 value)
internal
view
returns (uint256)
{
return value.mul(internalDecimals).div(yamsScalingFactor);
}
// Rescue tokens
function rescueTokens(
address token,
address to,
uint256 amount
)
external
onlyGov
returns (bool)
{
// transfer to
SafeERC20.safeTransfer(IERC20(token), to, amount);
return true;
}
} | _setMigrator | function _setMigrator(address migrator_)
external
onlyGov
{
address oldMigrator = migrator_;
migrator = migrator_;
emit NewMigrator(oldMigrator, migrator_);
}
| /** @notice sets the migrator
* @param migrator_ The address of the migrator contract to use for authentication.
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
12356,
12574
]
} | 3,939 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMToken | contract YAMToken is YAMGovernanceToken {
// Modifiers
modifier onlyGov() {
require(msg.sender == gov);
_;
}
modifier onlyRebaser() {
require(msg.sender == rebaser);
_;
}
modifier onlyMinter() {
require(
msg.sender == rebaser
|| msg.sender == gov
|| msg.sender == incentivizer
|| msg.sender == migrator,
"not minter"
);
_;
}
modifier validRecipient(address to) {
require(to != address(0x0));
require(to != address(this));
_;
}
function initialize(
string memory name_,
string memory symbol_,
uint8 decimals_
)
public
{
require(yamsScalingFactor == 0, "already initialized");
name = name_;
symbol = symbol_;
decimals = decimals_;
}
/**
* @notice Computes the current max scaling factor
*/
function maxScalingFactor()
external
view
returns (uint256)
{
return _maxScalingFactor();
}
function _maxScalingFactor()
internal
view
returns (uint256)
{
// scaling factor can only go up to 2**256-1 = initSupply * yamsScalingFactor
// this is used to check if yamsScalingFactor will be too high to compute balances when rebasing.
return uint256(-1) / initSupply;
}
/**
* @notice Mints new tokens, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mint(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mint(to, amount);
return true;
}
function _mint(address to, uint256 amount)
internal
{
if (msg.sender == migrator) {
// migrator directly uses v2 balance for the amount
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
} else {
// increase totalSupply
totalSupply = totalSupply.add(amount);
// get underlying value
uint256 yamValue = _fragmentToYam(amount);
// increase initSupply
initSupply = initSupply.add(yamValue);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(yamValue);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], yamValue);
emit Mint(to, amount);
emit Transfer(address(0), to, amount);
}
}
/**
* @notice Mints new tokens using underlying amount, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mintUnderlying(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mintUnderlying(to, amount);
return true;
}
function _mintUnderlying(address to, uint256 amount)
internal
{
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
}
/**
* @dev Transfer underlying balance to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transferUnderlying(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(value);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(value);
emit Transfer(msg.sender, to, _yamToFragment(value));
_moveDelegates(_delegates[msg.sender], _delegates[to], value);
return true;
}
/* - ERC20 functionality - */
/**
* @dev Transfer tokens to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transfer(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// underlying balance is stored in yams, so divide by current scaling factor
// note, this means as scaling factor grows, dust will be untransferrable.
// minimum transfer value == yamsScalingFactor / 1e24;
// get amount in underlying
uint256 yamValue = _fragmentToYam(value);
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(yamValue);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(msg.sender, to, value);
_moveDelegates(_delegates[msg.sender], _delegates[to], yamValue);
return true;
}
/**
* @dev Transfer tokens from one address to another.
* @param from The address you want to send tokens from.
* @param to The address you want to transfer to.
* @param value The amount of tokens to be transferred.
*/
function transferFrom(address from, address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// decrease allowance
_allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value);
// get value in yams
uint256 yamValue = _fragmentToYam(value);
// sub from from
_yamBalances[from] = _yamBalances[from].sub(yamValue);
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(from, to, value);
_moveDelegates(_delegates[from], _delegates[to], yamValue);
return true;
}
/**
* @param who The address to query.
* @return The balance of the specified address.
*/
function balanceOf(address who)
external
view
returns (uint256)
{
return _yamToFragment(_yamBalances[who]);
}
/** @notice Currently returns the internal storage amount
* @param who The address to query.
* @return The underlying balance of the specified address.
*/
function balanceOfUnderlying(address who)
external
view
returns (uint256)
{
return _yamBalances[who];
}
/**
* @dev Function to check the amount of tokens that an owner has allowed to a spender.
* @param owner_ The address which owns the funds.
* @param spender The address which will spend the funds.
* @return The number of tokens still available for the spender.
*/
function allowance(address owner_, address spender)
external
view
returns (uint256)
{
return _allowedFragments[owner_][spender];
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of
* msg.sender. This method is included for ERC20 compatibility.
* increaseAllowance and decreaseAllowance should be used instead.
* Changing an allowance with this method brings the risk that someone may transfer both
* the old and the new allowance - if they are both greater than zero - if a transfer
* transaction is mined before the later approve() call is mined.
*
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner has allowed to a spender.
* This method should be used instead of approve() to avoid the double approval vulnerability
* described above.
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] =
_allowedFragments[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner has allowed to a spender.
*
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
external
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
// --- Approve by signature ---
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
require(now <= deadline, "YAM/permit-expired");
bytes32 digest =
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
value,
nonces[owner]++,
deadline
)
)
)
);
require(owner != address(0), "YAM/invalid-address-0");
require(owner == ecrecover(digest, v, r, s), "YAM/invalid-permit");
_allowedFragments[owner][spender] = value;
emit Approval(owner, spender, value);
}
/* - Governance Functions - */
/** @notice sets the rebaser
* @param rebaser_ The address of the rebaser contract to use for authentication.
*/
function _setRebaser(address rebaser_)
external
onlyGov
{
address oldRebaser = rebaser;
rebaser = rebaser_;
emit NewRebaser(oldRebaser, rebaser_);
}
/** @notice sets the migrator
* @param migrator_ The address of the migrator contract to use for authentication.
*/
function _setMigrator(address migrator_)
external
onlyGov
{
address oldMigrator = migrator_;
migrator = migrator_;
emit NewMigrator(oldMigrator, migrator_);
}
/** @notice sets the incentivizer
* @param incentivizer_ The address of the rebaser contract to use for authentication.
*/
function _setIncentivizer(address incentivizer_)
external
onlyGov
{
address oldIncentivizer = incentivizer;
incentivizer = incentivizer_;
emit NewIncentivizer(oldIncentivizer, incentivizer_);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the rebaser contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice allows governance to assign delegate to self
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
function assignSelfDelegate(address nonvotingContract)
external
onlyGov
{
address delegate = _delegates[nonvotingContract];
require( delegate == address(0), "!address(0)" );
// assigns delegate to self only
_delegate(nonvotingContract, nonvotingContract);
}
/* - Extras - */
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetRate) / targetRate
* and targetRate is CpiOracleRate / baseCpi
*/
function rebase(
uint256 epoch,
uint256 indexDelta,
bool positive
)
external
onlyRebaser
returns (uint256)
{
// no change
if (indexDelta == 0) {
emit Rebase(epoch, yamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
// for events
uint256 prevYamsScalingFactor = yamsScalingFactor;
if (!positive) {
// negative rebase, decrease scaling factor
yamsScalingFactor = yamsScalingFactor.mul(BASE.sub(indexDelta)).div(BASE);
} else {
// positive reabse, increase scaling factor
uint256 newScalingFactor = yamsScalingFactor.mul(BASE.add(indexDelta)).div(BASE);
if (newScalingFactor < _maxScalingFactor()) {
yamsScalingFactor = newScalingFactor;
} else {
yamsScalingFactor = _maxScalingFactor();
}
}
// update total supply, correctly
totalSupply = _yamToFragment(initSupply);
emit Rebase(epoch, prevYamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
function yamToFragment(uint256 yam)
external
view
returns (uint256)
{
return _yamToFragment(yam);
}
function fragmentToYam(uint256 value)
external
view
returns (uint256)
{
return _fragmentToYam(value);
}
function _yamToFragment(uint256 yam)
internal
view
returns (uint256)
{
return yam.mul(yamsScalingFactor).div(internalDecimals);
}
function _fragmentToYam(uint256 value)
internal
view
returns (uint256)
{
return value.mul(internalDecimals).div(yamsScalingFactor);
}
// Rescue tokens
function rescueTokens(
address token,
address to,
uint256 amount
)
external
onlyGov
returns (bool)
{
// transfer to
SafeERC20.safeTransfer(IERC20(token), to, amount);
return true;
}
} | _setIncentivizer | function _setIncentivizer(address incentivizer_)
external
onlyGov
{
address oldIncentivizer = incentivizer;
incentivizer = incentivizer_;
emit NewIncentivizer(oldIncentivizer, incentivizer_);
}
| /** @notice sets the incentivizer
* @param incentivizer_ The address of the rebaser contract to use for authentication.
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
12717,
12970
]
} | 3,940 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMToken | contract YAMToken is YAMGovernanceToken {
// Modifiers
modifier onlyGov() {
require(msg.sender == gov);
_;
}
modifier onlyRebaser() {
require(msg.sender == rebaser);
_;
}
modifier onlyMinter() {
require(
msg.sender == rebaser
|| msg.sender == gov
|| msg.sender == incentivizer
|| msg.sender == migrator,
"not minter"
);
_;
}
modifier validRecipient(address to) {
require(to != address(0x0));
require(to != address(this));
_;
}
function initialize(
string memory name_,
string memory symbol_,
uint8 decimals_
)
public
{
require(yamsScalingFactor == 0, "already initialized");
name = name_;
symbol = symbol_;
decimals = decimals_;
}
/**
* @notice Computes the current max scaling factor
*/
function maxScalingFactor()
external
view
returns (uint256)
{
return _maxScalingFactor();
}
function _maxScalingFactor()
internal
view
returns (uint256)
{
// scaling factor can only go up to 2**256-1 = initSupply * yamsScalingFactor
// this is used to check if yamsScalingFactor will be too high to compute balances when rebasing.
return uint256(-1) / initSupply;
}
/**
* @notice Mints new tokens, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mint(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mint(to, amount);
return true;
}
function _mint(address to, uint256 amount)
internal
{
if (msg.sender == migrator) {
// migrator directly uses v2 balance for the amount
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
} else {
// increase totalSupply
totalSupply = totalSupply.add(amount);
// get underlying value
uint256 yamValue = _fragmentToYam(amount);
// increase initSupply
initSupply = initSupply.add(yamValue);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(yamValue);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], yamValue);
emit Mint(to, amount);
emit Transfer(address(0), to, amount);
}
}
/**
* @notice Mints new tokens using underlying amount, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mintUnderlying(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mintUnderlying(to, amount);
return true;
}
function _mintUnderlying(address to, uint256 amount)
internal
{
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
}
/**
* @dev Transfer underlying balance to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transferUnderlying(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(value);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(value);
emit Transfer(msg.sender, to, _yamToFragment(value));
_moveDelegates(_delegates[msg.sender], _delegates[to], value);
return true;
}
/* - ERC20 functionality - */
/**
* @dev Transfer tokens to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transfer(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// underlying balance is stored in yams, so divide by current scaling factor
// note, this means as scaling factor grows, dust will be untransferrable.
// minimum transfer value == yamsScalingFactor / 1e24;
// get amount in underlying
uint256 yamValue = _fragmentToYam(value);
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(yamValue);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(msg.sender, to, value);
_moveDelegates(_delegates[msg.sender], _delegates[to], yamValue);
return true;
}
/**
* @dev Transfer tokens from one address to another.
* @param from The address you want to send tokens from.
* @param to The address you want to transfer to.
* @param value The amount of tokens to be transferred.
*/
function transferFrom(address from, address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// decrease allowance
_allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value);
// get value in yams
uint256 yamValue = _fragmentToYam(value);
// sub from from
_yamBalances[from] = _yamBalances[from].sub(yamValue);
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(from, to, value);
_moveDelegates(_delegates[from], _delegates[to], yamValue);
return true;
}
/**
* @param who The address to query.
* @return The balance of the specified address.
*/
function balanceOf(address who)
external
view
returns (uint256)
{
return _yamToFragment(_yamBalances[who]);
}
/** @notice Currently returns the internal storage amount
* @param who The address to query.
* @return The underlying balance of the specified address.
*/
function balanceOfUnderlying(address who)
external
view
returns (uint256)
{
return _yamBalances[who];
}
/**
* @dev Function to check the amount of tokens that an owner has allowed to a spender.
* @param owner_ The address which owns the funds.
* @param spender The address which will spend the funds.
* @return The number of tokens still available for the spender.
*/
function allowance(address owner_, address spender)
external
view
returns (uint256)
{
return _allowedFragments[owner_][spender];
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of
* msg.sender. This method is included for ERC20 compatibility.
* increaseAllowance and decreaseAllowance should be used instead.
* Changing an allowance with this method brings the risk that someone may transfer both
* the old and the new allowance - if they are both greater than zero - if a transfer
* transaction is mined before the later approve() call is mined.
*
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner has allowed to a spender.
* This method should be used instead of approve() to avoid the double approval vulnerability
* described above.
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] =
_allowedFragments[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner has allowed to a spender.
*
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
external
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
// --- Approve by signature ---
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
require(now <= deadline, "YAM/permit-expired");
bytes32 digest =
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
value,
nonces[owner]++,
deadline
)
)
)
);
require(owner != address(0), "YAM/invalid-address-0");
require(owner == ecrecover(digest, v, r, s), "YAM/invalid-permit");
_allowedFragments[owner][spender] = value;
emit Approval(owner, spender, value);
}
/* - Governance Functions - */
/** @notice sets the rebaser
* @param rebaser_ The address of the rebaser contract to use for authentication.
*/
function _setRebaser(address rebaser_)
external
onlyGov
{
address oldRebaser = rebaser;
rebaser = rebaser_;
emit NewRebaser(oldRebaser, rebaser_);
}
/** @notice sets the migrator
* @param migrator_ The address of the migrator contract to use for authentication.
*/
function _setMigrator(address migrator_)
external
onlyGov
{
address oldMigrator = migrator_;
migrator = migrator_;
emit NewMigrator(oldMigrator, migrator_);
}
/** @notice sets the incentivizer
* @param incentivizer_ The address of the rebaser contract to use for authentication.
*/
function _setIncentivizer(address incentivizer_)
external
onlyGov
{
address oldIncentivizer = incentivizer;
incentivizer = incentivizer_;
emit NewIncentivizer(oldIncentivizer, incentivizer_);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the rebaser contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice allows governance to assign delegate to self
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
function assignSelfDelegate(address nonvotingContract)
external
onlyGov
{
address delegate = _delegates[nonvotingContract];
require( delegate == address(0), "!address(0)" );
// assigns delegate to self only
_delegate(nonvotingContract, nonvotingContract);
}
/* - Extras - */
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetRate) / targetRate
* and targetRate is CpiOracleRate / baseCpi
*/
function rebase(
uint256 epoch,
uint256 indexDelta,
bool positive
)
external
onlyRebaser
returns (uint256)
{
// no change
if (indexDelta == 0) {
emit Rebase(epoch, yamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
// for events
uint256 prevYamsScalingFactor = yamsScalingFactor;
if (!positive) {
// negative rebase, decrease scaling factor
yamsScalingFactor = yamsScalingFactor.mul(BASE.sub(indexDelta)).div(BASE);
} else {
// positive reabse, increase scaling factor
uint256 newScalingFactor = yamsScalingFactor.mul(BASE.add(indexDelta)).div(BASE);
if (newScalingFactor < _maxScalingFactor()) {
yamsScalingFactor = newScalingFactor;
} else {
yamsScalingFactor = _maxScalingFactor();
}
}
// update total supply, correctly
totalSupply = _yamToFragment(initSupply);
emit Rebase(epoch, prevYamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
function yamToFragment(uint256 yam)
external
view
returns (uint256)
{
return _yamToFragment(yam);
}
function fragmentToYam(uint256 value)
external
view
returns (uint256)
{
return _fragmentToYam(value);
}
function _yamToFragment(uint256 yam)
internal
view
returns (uint256)
{
return yam.mul(yamsScalingFactor).div(internalDecimals);
}
function _fragmentToYam(uint256 value)
internal
view
returns (uint256)
{
return value.mul(internalDecimals).div(yamsScalingFactor);
}
// Rescue tokens
function rescueTokens(
address token,
address to,
uint256 amount
)
external
onlyGov
returns (bool)
{
// transfer to
SafeERC20.safeTransfer(IERC20(token), to, amount);
return true;
}
} | _setPendingGov | function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
| /** @notice sets the pendingGov
* @param pendingGov_ The address of the rebaser contract to use for authentication.
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
13109,
13344
]
} | 3,941 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMToken | contract YAMToken is YAMGovernanceToken {
// Modifiers
modifier onlyGov() {
require(msg.sender == gov);
_;
}
modifier onlyRebaser() {
require(msg.sender == rebaser);
_;
}
modifier onlyMinter() {
require(
msg.sender == rebaser
|| msg.sender == gov
|| msg.sender == incentivizer
|| msg.sender == migrator,
"not minter"
);
_;
}
modifier validRecipient(address to) {
require(to != address(0x0));
require(to != address(this));
_;
}
function initialize(
string memory name_,
string memory symbol_,
uint8 decimals_
)
public
{
require(yamsScalingFactor == 0, "already initialized");
name = name_;
symbol = symbol_;
decimals = decimals_;
}
/**
* @notice Computes the current max scaling factor
*/
function maxScalingFactor()
external
view
returns (uint256)
{
return _maxScalingFactor();
}
function _maxScalingFactor()
internal
view
returns (uint256)
{
// scaling factor can only go up to 2**256-1 = initSupply * yamsScalingFactor
// this is used to check if yamsScalingFactor will be too high to compute balances when rebasing.
return uint256(-1) / initSupply;
}
/**
* @notice Mints new tokens, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mint(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mint(to, amount);
return true;
}
function _mint(address to, uint256 amount)
internal
{
if (msg.sender == migrator) {
// migrator directly uses v2 balance for the amount
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
} else {
// increase totalSupply
totalSupply = totalSupply.add(amount);
// get underlying value
uint256 yamValue = _fragmentToYam(amount);
// increase initSupply
initSupply = initSupply.add(yamValue);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(yamValue);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], yamValue);
emit Mint(to, amount);
emit Transfer(address(0), to, amount);
}
}
/**
* @notice Mints new tokens using underlying amount, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mintUnderlying(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mintUnderlying(to, amount);
return true;
}
function _mintUnderlying(address to, uint256 amount)
internal
{
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
}
/**
* @dev Transfer underlying balance to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transferUnderlying(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(value);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(value);
emit Transfer(msg.sender, to, _yamToFragment(value));
_moveDelegates(_delegates[msg.sender], _delegates[to], value);
return true;
}
/* - ERC20 functionality - */
/**
* @dev Transfer tokens to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transfer(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// underlying balance is stored in yams, so divide by current scaling factor
// note, this means as scaling factor grows, dust will be untransferrable.
// minimum transfer value == yamsScalingFactor / 1e24;
// get amount in underlying
uint256 yamValue = _fragmentToYam(value);
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(yamValue);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(msg.sender, to, value);
_moveDelegates(_delegates[msg.sender], _delegates[to], yamValue);
return true;
}
/**
* @dev Transfer tokens from one address to another.
* @param from The address you want to send tokens from.
* @param to The address you want to transfer to.
* @param value The amount of tokens to be transferred.
*/
function transferFrom(address from, address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// decrease allowance
_allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value);
// get value in yams
uint256 yamValue = _fragmentToYam(value);
// sub from from
_yamBalances[from] = _yamBalances[from].sub(yamValue);
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(from, to, value);
_moveDelegates(_delegates[from], _delegates[to], yamValue);
return true;
}
/**
* @param who The address to query.
* @return The balance of the specified address.
*/
function balanceOf(address who)
external
view
returns (uint256)
{
return _yamToFragment(_yamBalances[who]);
}
/** @notice Currently returns the internal storage amount
* @param who The address to query.
* @return The underlying balance of the specified address.
*/
function balanceOfUnderlying(address who)
external
view
returns (uint256)
{
return _yamBalances[who];
}
/**
* @dev Function to check the amount of tokens that an owner has allowed to a spender.
* @param owner_ The address which owns the funds.
* @param spender The address which will spend the funds.
* @return The number of tokens still available for the spender.
*/
function allowance(address owner_, address spender)
external
view
returns (uint256)
{
return _allowedFragments[owner_][spender];
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of
* msg.sender. This method is included for ERC20 compatibility.
* increaseAllowance and decreaseAllowance should be used instead.
* Changing an allowance with this method brings the risk that someone may transfer both
* the old and the new allowance - if they are both greater than zero - if a transfer
* transaction is mined before the later approve() call is mined.
*
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner has allowed to a spender.
* This method should be used instead of approve() to avoid the double approval vulnerability
* described above.
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] =
_allowedFragments[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner has allowed to a spender.
*
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
external
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
// --- Approve by signature ---
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
require(now <= deadline, "YAM/permit-expired");
bytes32 digest =
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
value,
nonces[owner]++,
deadline
)
)
)
);
require(owner != address(0), "YAM/invalid-address-0");
require(owner == ecrecover(digest, v, r, s), "YAM/invalid-permit");
_allowedFragments[owner][spender] = value;
emit Approval(owner, spender, value);
}
/* - Governance Functions - */
/** @notice sets the rebaser
* @param rebaser_ The address of the rebaser contract to use for authentication.
*/
function _setRebaser(address rebaser_)
external
onlyGov
{
address oldRebaser = rebaser;
rebaser = rebaser_;
emit NewRebaser(oldRebaser, rebaser_);
}
/** @notice sets the migrator
* @param migrator_ The address of the migrator contract to use for authentication.
*/
function _setMigrator(address migrator_)
external
onlyGov
{
address oldMigrator = migrator_;
migrator = migrator_;
emit NewMigrator(oldMigrator, migrator_);
}
/** @notice sets the incentivizer
* @param incentivizer_ The address of the rebaser contract to use for authentication.
*/
function _setIncentivizer(address incentivizer_)
external
onlyGov
{
address oldIncentivizer = incentivizer;
incentivizer = incentivizer_;
emit NewIncentivizer(oldIncentivizer, incentivizer_);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the rebaser contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice allows governance to assign delegate to self
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
function assignSelfDelegate(address nonvotingContract)
external
onlyGov
{
address delegate = _delegates[nonvotingContract];
require( delegate == address(0), "!address(0)" );
// assigns delegate to self only
_delegate(nonvotingContract, nonvotingContract);
}
/* - Extras - */
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetRate) / targetRate
* and targetRate is CpiOracleRate / baseCpi
*/
function rebase(
uint256 epoch,
uint256 indexDelta,
bool positive
)
external
onlyRebaser
returns (uint256)
{
// no change
if (indexDelta == 0) {
emit Rebase(epoch, yamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
// for events
uint256 prevYamsScalingFactor = yamsScalingFactor;
if (!positive) {
// negative rebase, decrease scaling factor
yamsScalingFactor = yamsScalingFactor.mul(BASE.sub(indexDelta)).div(BASE);
} else {
// positive reabse, increase scaling factor
uint256 newScalingFactor = yamsScalingFactor.mul(BASE.add(indexDelta)).div(BASE);
if (newScalingFactor < _maxScalingFactor()) {
yamsScalingFactor = newScalingFactor;
} else {
yamsScalingFactor = _maxScalingFactor();
}
}
// update total supply, correctly
totalSupply = _yamToFragment(initSupply);
emit Rebase(epoch, prevYamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
function yamToFragment(uint256 yam)
external
view
returns (uint256)
{
return _yamToFragment(yam);
}
function fragmentToYam(uint256 value)
external
view
returns (uint256)
{
return _fragmentToYam(value);
}
function _yamToFragment(uint256 yam)
internal
view
returns (uint256)
{
return yam.mul(yamsScalingFactor).div(internalDecimals);
}
function _fragmentToYam(uint256 value)
internal
view
returns (uint256)
{
return value.mul(internalDecimals).div(yamsScalingFactor);
}
// Rescue tokens
function rescueTokens(
address token,
address to,
uint256 amount
)
external
onlyGov
returns (bool)
{
// transfer to
SafeERC20.safeTransfer(IERC20(token), to, amount);
return true;
}
} | _acceptGov | function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
| /** @notice allows governance to assign delegate to self
*
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
13426,
13667
]
} | 3,942 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMToken | contract YAMToken is YAMGovernanceToken {
// Modifiers
modifier onlyGov() {
require(msg.sender == gov);
_;
}
modifier onlyRebaser() {
require(msg.sender == rebaser);
_;
}
modifier onlyMinter() {
require(
msg.sender == rebaser
|| msg.sender == gov
|| msg.sender == incentivizer
|| msg.sender == migrator,
"not minter"
);
_;
}
modifier validRecipient(address to) {
require(to != address(0x0));
require(to != address(this));
_;
}
function initialize(
string memory name_,
string memory symbol_,
uint8 decimals_
)
public
{
require(yamsScalingFactor == 0, "already initialized");
name = name_;
symbol = symbol_;
decimals = decimals_;
}
/**
* @notice Computes the current max scaling factor
*/
function maxScalingFactor()
external
view
returns (uint256)
{
return _maxScalingFactor();
}
function _maxScalingFactor()
internal
view
returns (uint256)
{
// scaling factor can only go up to 2**256-1 = initSupply * yamsScalingFactor
// this is used to check if yamsScalingFactor will be too high to compute balances when rebasing.
return uint256(-1) / initSupply;
}
/**
* @notice Mints new tokens, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mint(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mint(to, amount);
return true;
}
function _mint(address to, uint256 amount)
internal
{
if (msg.sender == migrator) {
// migrator directly uses v2 balance for the amount
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
} else {
// increase totalSupply
totalSupply = totalSupply.add(amount);
// get underlying value
uint256 yamValue = _fragmentToYam(amount);
// increase initSupply
initSupply = initSupply.add(yamValue);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(yamValue);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], yamValue);
emit Mint(to, amount);
emit Transfer(address(0), to, amount);
}
}
/**
* @notice Mints new tokens using underlying amount, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mintUnderlying(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mintUnderlying(to, amount);
return true;
}
function _mintUnderlying(address to, uint256 amount)
internal
{
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
}
/**
* @dev Transfer underlying balance to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transferUnderlying(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(value);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(value);
emit Transfer(msg.sender, to, _yamToFragment(value));
_moveDelegates(_delegates[msg.sender], _delegates[to], value);
return true;
}
/* - ERC20 functionality - */
/**
* @dev Transfer tokens to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transfer(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// underlying balance is stored in yams, so divide by current scaling factor
// note, this means as scaling factor grows, dust will be untransferrable.
// minimum transfer value == yamsScalingFactor / 1e24;
// get amount in underlying
uint256 yamValue = _fragmentToYam(value);
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(yamValue);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(msg.sender, to, value);
_moveDelegates(_delegates[msg.sender], _delegates[to], yamValue);
return true;
}
/**
* @dev Transfer tokens from one address to another.
* @param from The address you want to send tokens from.
* @param to The address you want to transfer to.
* @param value The amount of tokens to be transferred.
*/
function transferFrom(address from, address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// decrease allowance
_allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value);
// get value in yams
uint256 yamValue = _fragmentToYam(value);
// sub from from
_yamBalances[from] = _yamBalances[from].sub(yamValue);
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(from, to, value);
_moveDelegates(_delegates[from], _delegates[to], yamValue);
return true;
}
/**
* @param who The address to query.
* @return The balance of the specified address.
*/
function balanceOf(address who)
external
view
returns (uint256)
{
return _yamToFragment(_yamBalances[who]);
}
/** @notice Currently returns the internal storage amount
* @param who The address to query.
* @return The underlying balance of the specified address.
*/
function balanceOfUnderlying(address who)
external
view
returns (uint256)
{
return _yamBalances[who];
}
/**
* @dev Function to check the amount of tokens that an owner has allowed to a spender.
* @param owner_ The address which owns the funds.
* @param spender The address which will spend the funds.
* @return The number of tokens still available for the spender.
*/
function allowance(address owner_, address spender)
external
view
returns (uint256)
{
return _allowedFragments[owner_][spender];
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of
* msg.sender. This method is included for ERC20 compatibility.
* increaseAllowance and decreaseAllowance should be used instead.
* Changing an allowance with this method brings the risk that someone may transfer both
* the old and the new allowance - if they are both greater than zero - if a transfer
* transaction is mined before the later approve() call is mined.
*
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner has allowed to a spender.
* This method should be used instead of approve() to avoid the double approval vulnerability
* described above.
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] =
_allowedFragments[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner has allowed to a spender.
*
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
external
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
// --- Approve by signature ---
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
require(now <= deadline, "YAM/permit-expired");
bytes32 digest =
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
value,
nonces[owner]++,
deadline
)
)
)
);
require(owner != address(0), "YAM/invalid-address-0");
require(owner == ecrecover(digest, v, r, s), "YAM/invalid-permit");
_allowedFragments[owner][spender] = value;
emit Approval(owner, spender, value);
}
/* - Governance Functions - */
/** @notice sets the rebaser
* @param rebaser_ The address of the rebaser contract to use for authentication.
*/
function _setRebaser(address rebaser_)
external
onlyGov
{
address oldRebaser = rebaser;
rebaser = rebaser_;
emit NewRebaser(oldRebaser, rebaser_);
}
/** @notice sets the migrator
* @param migrator_ The address of the migrator contract to use for authentication.
*/
function _setMigrator(address migrator_)
external
onlyGov
{
address oldMigrator = migrator_;
migrator = migrator_;
emit NewMigrator(oldMigrator, migrator_);
}
/** @notice sets the incentivizer
* @param incentivizer_ The address of the rebaser contract to use for authentication.
*/
function _setIncentivizer(address incentivizer_)
external
onlyGov
{
address oldIncentivizer = incentivizer;
incentivizer = incentivizer_;
emit NewIncentivizer(oldIncentivizer, incentivizer_);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the rebaser contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice allows governance to assign delegate to self
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
function assignSelfDelegate(address nonvotingContract)
external
onlyGov
{
address delegate = _delegates[nonvotingContract];
require( delegate == address(0), "!address(0)" );
// assigns delegate to self only
_delegate(nonvotingContract, nonvotingContract);
}
/* - Extras - */
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetRate) / targetRate
* and targetRate is CpiOracleRate / baseCpi
*/
function rebase(
uint256 epoch,
uint256 indexDelta,
bool positive
)
external
onlyRebaser
returns (uint256)
{
// no change
if (indexDelta == 0) {
emit Rebase(epoch, yamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
// for events
uint256 prevYamsScalingFactor = yamsScalingFactor;
if (!positive) {
// negative rebase, decrease scaling factor
yamsScalingFactor = yamsScalingFactor.mul(BASE.sub(indexDelta)).div(BASE);
} else {
// positive reabse, increase scaling factor
uint256 newScalingFactor = yamsScalingFactor.mul(BASE.add(indexDelta)).div(BASE);
if (newScalingFactor < _maxScalingFactor()) {
yamsScalingFactor = newScalingFactor;
} else {
yamsScalingFactor = _maxScalingFactor();
}
}
// update total supply, correctly
totalSupply = _yamToFragment(initSupply);
emit Rebase(epoch, prevYamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
function yamToFragment(uint256 yam)
external
view
returns (uint256)
{
return _yamToFragment(yam);
}
function fragmentToYam(uint256 value)
external
view
returns (uint256)
{
return _fragmentToYam(value);
}
function _yamToFragment(uint256 yam)
internal
view
returns (uint256)
{
return yam.mul(yamsScalingFactor).div(internalDecimals);
}
function _fragmentToYam(uint256 value)
internal
view
returns (uint256)
{
return value.mul(internalDecimals).div(yamsScalingFactor);
}
// Rescue tokens
function rescueTokens(
address token,
address to,
uint256 amount
)
external
onlyGov
returns (bool)
{
// transfer to
SafeERC20.safeTransfer(IERC20(token), to, amount);
return true;
}
} | rebase | function rebase(
uint256 epoch,
uint256 indexDelta,
bool positive
)
external
onlyRebaser
returns (uint256)
{
// no change
if (indexDelta == 0) {
emit Rebase(epoch, yamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
// for events
uint256 prevYamsScalingFactor = yamsScalingFactor;
if (!positive) {
// negative rebase, decrease scaling factor
yamsScalingFactor = yamsScalingFactor.mul(BASE.sub(indexDelta)).div(BASE);
} else {
// positive reabse, increase scaling factor
uint256 newScalingFactor = yamsScalingFactor.mul(BASE.add(indexDelta)).div(BASE);
if (newScalingFactor < _maxScalingFactor()) {
yamsScalingFactor = newScalingFactor;
} else {
yamsScalingFactor = _maxScalingFactor();
}
}
// update total supply, correctly
totalSupply = _yamToFragment(initSupply);
emit Rebase(epoch, prevYamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
| /**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetRate) / targetRate
* and targetRate is CpiOracleRate / baseCpi
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
14379,
15576
]
} | 3,943 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMToken | contract YAMToken is YAMGovernanceToken {
// Modifiers
modifier onlyGov() {
require(msg.sender == gov);
_;
}
modifier onlyRebaser() {
require(msg.sender == rebaser);
_;
}
modifier onlyMinter() {
require(
msg.sender == rebaser
|| msg.sender == gov
|| msg.sender == incentivizer
|| msg.sender == migrator,
"not minter"
);
_;
}
modifier validRecipient(address to) {
require(to != address(0x0));
require(to != address(this));
_;
}
function initialize(
string memory name_,
string memory symbol_,
uint8 decimals_
)
public
{
require(yamsScalingFactor == 0, "already initialized");
name = name_;
symbol = symbol_;
decimals = decimals_;
}
/**
* @notice Computes the current max scaling factor
*/
function maxScalingFactor()
external
view
returns (uint256)
{
return _maxScalingFactor();
}
function _maxScalingFactor()
internal
view
returns (uint256)
{
// scaling factor can only go up to 2**256-1 = initSupply * yamsScalingFactor
// this is used to check if yamsScalingFactor will be too high to compute balances when rebasing.
return uint256(-1) / initSupply;
}
/**
* @notice Mints new tokens, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mint(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mint(to, amount);
return true;
}
function _mint(address to, uint256 amount)
internal
{
if (msg.sender == migrator) {
// migrator directly uses v2 balance for the amount
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
} else {
// increase totalSupply
totalSupply = totalSupply.add(amount);
// get underlying value
uint256 yamValue = _fragmentToYam(amount);
// increase initSupply
initSupply = initSupply.add(yamValue);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(yamValue);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], yamValue);
emit Mint(to, amount);
emit Transfer(address(0), to, amount);
}
}
/**
* @notice Mints new tokens using underlying amount, increasing totalSupply, initSupply, and a users balance.
* @dev Limited to onlyMinter modifier
*/
function mintUnderlying(address to, uint256 amount)
external
onlyMinter
returns (bool)
{
_mintUnderlying(to, amount);
return true;
}
function _mintUnderlying(address to, uint256 amount)
internal
{
// increase initSupply
initSupply = initSupply.add(amount);
// get external value
uint256 scaledAmount = _yamToFragment(amount);
// increase totalSupply
totalSupply = totalSupply.add(scaledAmount);
// make sure the mint didnt push maxScalingFactor too low
require(yamsScalingFactor <= _maxScalingFactor(), "max scaling factor too low");
// add balance
_yamBalances[to] = _yamBalances[to].add(amount);
// add delegates to the minter
_moveDelegates(address(0), _delegates[to], amount);
emit Mint(to, scaledAmount);
emit Transfer(address(0), to, scaledAmount);
}
/**
* @dev Transfer underlying balance to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transferUnderlying(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(value);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(value);
emit Transfer(msg.sender, to, _yamToFragment(value));
_moveDelegates(_delegates[msg.sender], _delegates[to], value);
return true;
}
/* - ERC20 functionality - */
/**
* @dev Transfer tokens to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transfer(address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// underlying balance is stored in yams, so divide by current scaling factor
// note, this means as scaling factor grows, dust will be untransferrable.
// minimum transfer value == yamsScalingFactor / 1e24;
// get amount in underlying
uint256 yamValue = _fragmentToYam(value);
// sub from balance of sender
_yamBalances[msg.sender] = _yamBalances[msg.sender].sub(yamValue);
// add to balance of receiver
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(msg.sender, to, value);
_moveDelegates(_delegates[msg.sender], _delegates[to], yamValue);
return true;
}
/**
* @dev Transfer tokens from one address to another.
* @param from The address you want to send tokens from.
* @param to The address you want to transfer to.
* @param value The amount of tokens to be transferred.
*/
function transferFrom(address from, address to, uint256 value)
external
validRecipient(to)
returns (bool)
{
// decrease allowance
_allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value);
// get value in yams
uint256 yamValue = _fragmentToYam(value);
// sub from from
_yamBalances[from] = _yamBalances[from].sub(yamValue);
_yamBalances[to] = _yamBalances[to].add(yamValue);
emit Transfer(from, to, value);
_moveDelegates(_delegates[from], _delegates[to], yamValue);
return true;
}
/**
* @param who The address to query.
* @return The balance of the specified address.
*/
function balanceOf(address who)
external
view
returns (uint256)
{
return _yamToFragment(_yamBalances[who]);
}
/** @notice Currently returns the internal storage amount
* @param who The address to query.
* @return The underlying balance of the specified address.
*/
function balanceOfUnderlying(address who)
external
view
returns (uint256)
{
return _yamBalances[who];
}
/**
* @dev Function to check the amount of tokens that an owner has allowed to a spender.
* @param owner_ The address which owns the funds.
* @param spender The address which will spend the funds.
* @return The number of tokens still available for the spender.
*/
function allowance(address owner_, address spender)
external
view
returns (uint256)
{
return _allowedFragments[owner_][spender];
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of
* msg.sender. This method is included for ERC20 compatibility.
* increaseAllowance and decreaseAllowance should be used instead.
* Changing an allowance with this method brings the risk that someone may transfer both
* the old and the new allowance - if they are both greater than zero - if a transfer
* transaction is mined before the later approve() call is mined.
*
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner has allowed to a spender.
* This method should be used instead of approve() to avoid the double approval vulnerability
* described above.
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue)
external
returns (bool)
{
_allowedFragments[msg.sender][spender] =
_allowedFragments[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner has allowed to a spender.
*
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
external
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
// --- Approve by signature ---
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
require(now <= deadline, "YAM/permit-expired");
bytes32 digest =
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
value,
nonces[owner]++,
deadline
)
)
)
);
require(owner != address(0), "YAM/invalid-address-0");
require(owner == ecrecover(digest, v, r, s), "YAM/invalid-permit");
_allowedFragments[owner][spender] = value;
emit Approval(owner, spender, value);
}
/* - Governance Functions - */
/** @notice sets the rebaser
* @param rebaser_ The address of the rebaser contract to use for authentication.
*/
function _setRebaser(address rebaser_)
external
onlyGov
{
address oldRebaser = rebaser;
rebaser = rebaser_;
emit NewRebaser(oldRebaser, rebaser_);
}
/** @notice sets the migrator
* @param migrator_ The address of the migrator contract to use for authentication.
*/
function _setMigrator(address migrator_)
external
onlyGov
{
address oldMigrator = migrator_;
migrator = migrator_;
emit NewMigrator(oldMigrator, migrator_);
}
/** @notice sets the incentivizer
* @param incentivizer_ The address of the rebaser contract to use for authentication.
*/
function _setIncentivizer(address incentivizer_)
external
onlyGov
{
address oldIncentivizer = incentivizer;
incentivizer = incentivizer_;
emit NewIncentivizer(oldIncentivizer, incentivizer_);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the rebaser contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice allows governance to assign delegate to self
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
function assignSelfDelegate(address nonvotingContract)
external
onlyGov
{
address delegate = _delegates[nonvotingContract];
require( delegate == address(0), "!address(0)" );
// assigns delegate to self only
_delegate(nonvotingContract, nonvotingContract);
}
/* - Extras - */
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetRate) / targetRate
* and targetRate is CpiOracleRate / baseCpi
*/
function rebase(
uint256 epoch,
uint256 indexDelta,
bool positive
)
external
onlyRebaser
returns (uint256)
{
// no change
if (indexDelta == 0) {
emit Rebase(epoch, yamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
// for events
uint256 prevYamsScalingFactor = yamsScalingFactor;
if (!positive) {
// negative rebase, decrease scaling factor
yamsScalingFactor = yamsScalingFactor.mul(BASE.sub(indexDelta)).div(BASE);
} else {
// positive reabse, increase scaling factor
uint256 newScalingFactor = yamsScalingFactor.mul(BASE.add(indexDelta)).div(BASE);
if (newScalingFactor < _maxScalingFactor()) {
yamsScalingFactor = newScalingFactor;
} else {
yamsScalingFactor = _maxScalingFactor();
}
}
// update total supply, correctly
totalSupply = _yamToFragment(initSupply);
emit Rebase(epoch, prevYamsScalingFactor, yamsScalingFactor);
return totalSupply;
}
function yamToFragment(uint256 yam)
external
view
returns (uint256)
{
return _yamToFragment(yam);
}
function fragmentToYam(uint256 value)
external
view
returns (uint256)
{
return _fragmentToYam(value);
}
function _yamToFragment(uint256 yam)
internal
view
returns (uint256)
{
return yam.mul(yamsScalingFactor).div(internalDecimals);
}
function _fragmentToYam(uint256 value)
internal
view
returns (uint256)
{
return value.mul(internalDecimals).div(yamsScalingFactor);
}
// Rescue tokens
function rescueTokens(
address token,
address to,
uint256 amount
)
external
onlyGov
returns (bool)
{
// transfer to
SafeERC20.safeTransfer(IERC20(token), to, amount);
return true;
}
} | rescueTokens | function rescueTokens(
address token,
address to,
uint256 amount
)
external
onlyGov
returns (bool)
{
// transfer to
SafeERC20.safeTransfer(IERC20(token), to, amount);
return true;
}
| // Rescue tokens | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
16281,
16563
]
} | 3,944 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMLogic3 | contract YAMLogic3 is YAMToken {
/**
* @notice Initialize the new money market
* @param name_ ERC-20 name of this token
* @param symbol_ ERC-20 symbol of this token
* @param decimals_ ERC-20 decimal precision of this token
*/
function initialize(
string memory name_,
string memory symbol_,
uint8 decimals_,
address initial_owner,
uint256 initTotalSupply_
)
public
{
super.initialize(name_, symbol_, decimals_);
yamsScalingFactor = BASE;
initSupply = _fragmentToYam(initTotalSupply_);
totalSupply = initTotalSupply_;
_yamBalances[initial_owner] = initSupply;
DOMAIN_SEPARATOR = keccak256(
abi.encode(
DOMAIN_TYPEHASH,
keccak256(bytes(name)),
getChainId(),
address(this)
)
);
}
} | initialize | function initialize(
string memory name_,
string memory symbol_,
uint8 decimals_,
address initial_owner,
uint256 initTotalSupply_
)
public
{
super.initialize(name_, symbol_, decimals_);
yamsScalingFactor = BASE;
initSupply = _fragmentToYam(initTotalSupply_);
totalSupply = initTotalSupply_;
_yamBalances[initial_owner] = initSupply;
DOMAIN_SEPARATOR = keccak256(
abi.encode(
DOMAIN_TYPEHASH,
keccak256(bytes(name)),
getChainId(),
address(this)
)
);
}
| /**
* @notice Initialize the new money market
* @param name_ ERC-20 name of this token
* @param symbol_ ERC-20 symbol of this token
* @param decimals_ ERC-20 decimal precision of this token
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
262,
947
]
} | 3,945 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMDelegatorInterface | contract YAMDelegatorInterface is YAMDelegationStorage {
/**
* @notice Emitted when implementation is changed
*/
event NewImplementation(address oldImplementation, address newImplementation);
/**
* @notice Called by the gov to update the implementation of the delegator
* @param implementation_ The address of the new implementation for delegation
* @param allowResign Flag to indicate whether to call _resignImplementation on the old implementation
* @param becomeImplementationData The encoded bytes data to be passed to _becomeImplementation
*/
function _setImplementation(address implementation_, bool allowResign, bytes memory becomeImplementationData) public;
} | _setImplementation | function _setImplementation(address implementation_, bool allowResign, bytes memory becomeImplementationData) public;
| /**
* @notice Called by the gov to update the implementation of the delegator
* @param implementation_ The address of the new implementation for delegation
* @param allowResign Flag to indicate whether to call _resignImplementation on the old implementation
* @param becomeImplementationData The encoded bytes data to be passed to _becomeImplementation
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
608,
730
]
} | 3,946 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMDelegateInterface | contract YAMDelegateInterface is YAMDelegationStorage {
/**
* @notice Called by the delegator on a delegate to initialize it for duty
* @dev Should revert if any issues arise which make it unfit for delegation
* @param data The encoded bytes data for any initialization
*/
function _becomeImplementation(bytes memory data) public;
/**
* @notice Called by the delegator on a delegate to forfeit its responsibility
*/
function _resignImplementation() public;
} | _becomeImplementation | function _becomeImplementation(bytes memory data) public;
| /**
* @notice Called by the delegator on a delegate to initialize it for duty
* @dev Should revert if any issues arise which make it unfit for delegation
* @param data The encoded bytes data for any initialization
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
303,
365
]
} | 3,947 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMDelegateInterface | contract YAMDelegateInterface is YAMDelegationStorage {
/**
* @notice Called by the delegator on a delegate to initialize it for duty
* @dev Should revert if any issues arise which make it unfit for delegation
* @param data The encoded bytes data for any initialization
*/
function _becomeImplementation(bytes memory data) public;
/**
* @notice Called by the delegator on a delegate to forfeit its responsibility
*/
function _resignImplementation() public;
} | _resignImplementation | function _resignImplementation() public;
| /**
* @notice Called by the delegator on a delegate to forfeit its responsibility
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
470,
515
]
} | 3,948 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMDelegate3 | contract YAMDelegate3 is YAMLogic3, YAMDelegateInterface {
/**
* @notice Construct an empty delegate
*/
constructor() public {}
/**
* @notice Called by the delegator on a delegate to initialize it for duty
* @param data The encoded bytes data for any initialization
*/
function _becomeImplementation(bytes memory data) public {
// Shh -- currently unused
data;
// Shh -- we don't ever want this hook to be marked pure
if (false) {
implementation = address(0);
}
require(msg.sender == gov, "only the gov may call _becomeImplementation");
}
/**
* @notice Called by the delegator on a delegate to forfeit its responsibility
*/
function _resignImplementation() public {
// Shh -- we don't ever want this hook to be marked pure
if (false) {
implementation = address(0);
}
require(msg.sender == gov, "only the gov may call _resignImplementation");
}
} | _becomeImplementation | function _becomeImplementation(bytes memory data) public {
// Shh -- currently unused
data;
// Shh -- we don't ever want this hook to be marked pure
if (false) {
implementation = address(0);
}
require(msg.sender == gov, "only the gov may call _becomeImplementation");
}
| /**
* @notice Called by the delegator on a delegate to initialize it for duty
* @param data The encoded bytes data for any initialization
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
317,
667
]
} | 3,949 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | YAMDelegate3 | contract YAMDelegate3 is YAMLogic3, YAMDelegateInterface {
/**
* @notice Construct an empty delegate
*/
constructor() public {}
/**
* @notice Called by the delegator on a delegate to initialize it for duty
* @param data The encoded bytes data for any initialization
*/
function _becomeImplementation(bytes memory data) public {
// Shh -- currently unused
data;
// Shh -- we don't ever want this hook to be marked pure
if (false) {
implementation = address(0);
}
require(msg.sender == gov, "only the gov may call _becomeImplementation");
}
/**
* @notice Called by the delegator on a delegate to forfeit its responsibility
*/
function _resignImplementation() public {
// Shh -- we don't ever want this hook to be marked pure
if (false) {
implementation = address(0);
}
require(msg.sender == gov, "only the gov may call _resignImplementation");
}
} | _resignImplementation | function _resignImplementation() public {
// Shh -- we don't ever want this hook to be marked pure
if (false) {
implementation = address(0);
}
require(msg.sender == gov, "only the gov may call _resignImplementation");
}
| /**
* @notice Called by the delegator on a delegate to forfeit its responsibility
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
772,
1052
]
} | 3,950 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | VestingPool | contract VestingPool {
using SafeMath for uint256;
using SafeMath for uint128;
struct Stream {
address recipient;
uint128 startTime;
uint128 length;
uint256 totalAmount;
uint256 amountPaidOut;
}
/**
* @notice Governor for this contract
*/
address public gov;
/**
* @notice Pending governance for this contract
*/
address public pendingGov;
/// @notice Mapping containing valid stream managers
mapping(address => bool) public isSubGov;
/// @notice Amount of tokens allocated to streams that hasn't yet been claimed
uint256 public totalUnclaimedInStreams;
/// @notice The number of streams created so far
uint256 public streamCount;
/// @notice All streams
mapping(uint256 => Stream) public streams;
/// @notice YAM token
YAMDelegate3 public yam;
/**
* @notice Event emitted when a sub gov is enabled/disabled
*/
event SubGovModified(
address account,
bool isSubGov
);
/**
* @notice Event emitted when stream is opened
*/
event StreamOpened(
address indexed account,
uint256 indexed streamId,
uint256 length,
uint256 totalAmount
);
/**
* @notice Event emitted when stream is closed
*/
event StreamClosed(uint256 indexed streamId);
/**
* @notice Event emitted on payout
*/
event Payout(
uint256 indexed streamId,
address indexed recipient,
uint256 amount
);
/**
* @notice Event emitted when pendingGov is changed
*/
event NewPendingGov(
address oldPendingGov,
address newPendingGov
);
/**
* @notice Event emitted when gov is changed
*/
event NewGov(
address oldGov,
address newGov
);
constructor(YAMDelegate3 _yam)
public
{
gov = msg.sender;
yam = _yam;
}
modifier onlyGov() {
require(msg.sender == gov, "VestingPool::onlyGov: account is not gov");
_;
}
modifier canManageStreams() {
require(
isSubGov[msg.sender] || (msg.sender == gov),
"VestingPool::canManageStreams: account cannot manage streams"
);
_;
}
/**
* @dev Set whether an account can open/close streams. Only callable by the current gov contract
* @param account The account to set permissions for.
* @param _isSubGov Whether or not this account can manage streams
*/
function setSubGov(address account, bool _isSubGov)
public
onlyGov
{
isSubGov[account] = _isSubGov;
emit SubGovModified(account, _isSubGov);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice accepts governance over this contract
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
/**
* @dev Opens a new stream that continuously pays out.
* @param recipient Account that will receive the funds.
* @param length The amount of time in seconds that the stream lasts
* @param totalAmount The total amount to payout in the stream
*/
function openStream(
address recipient,
uint128 length,
uint256 totalAmount
)
public
canManageStreams
returns (uint256 streamIndex)
{
streamIndex = streamCount++;
streams[streamIndex] = Stream({
recipient: recipient,
length: length,
startTime: uint128(block.timestamp),
totalAmount: totalAmount,
amountPaidOut: 0
});
totalUnclaimedInStreams = totalUnclaimedInStreams.add(totalAmount);
require(
totalUnclaimedInStreams <= yam.balanceOfUnderlying(address(this)),
"VestingPool::payout: Total streaming is greater than pool's YAM balance"
);
emit StreamOpened(recipient, streamIndex, length, totalAmount);
}
/**
* @dev Closes the specified stream. Pays out pending amounts, clears out the stream, and emits a StreamClosed event.
* @param streamId The id of the stream to close.
*/
function closeStream(uint256 streamId)
public
canManageStreams
{
payout(streamId);
streams[streamId] = Stream(
address(0x0000000000000000000000000000000000000000),
0,
0,
0,
0
);
emit StreamClosed(streamId);
}
/**
* @dev Pays out pending amount in a stream
* @param streamId The id of the stream to payout.
* @return The amount paid out in underlying
*/
function payout(uint256 streamId)
public
returns (uint256 paidOut)
{
uint128 currentTime = uint128(block.timestamp);
Stream memory stream = streams[streamId];
require(
stream.startTime <= currentTime,
"VestingPool::payout: Stream hasn't started yet"
);
uint256 claimableUnderlying = _claimable(stream);
streams[streamId].amountPaidOut = stream.amountPaidOut.add(
claimableUnderlying
);
totalUnclaimedInStreams = totalUnclaimedInStreams.sub(
claimableUnderlying
);
yam.transferUnderlying(stream.recipient, claimableUnderlying);
emit Payout(streamId, stream.recipient, claimableUnderlying);
return claimableUnderlying;
}
/**
* @dev The amount that is claimable for a stream
* @param streamId The stream to get the claimabout amount for.
* @return The amount that is claimable for this stream
*/
function claimable(uint256 streamId)
external
view
returns (uint256 claimableUnderlying)
{
Stream memory stream = streams[streamId];
return _claimable(stream);
}
function _claimable(Stream memory stream)
internal
view
returns (uint256 claimableUnderlying)
{
uint128 currentTime = uint128(block.timestamp);
uint128 elapsedTime = currentTime - stream.startTime;
if (currentTime >= stream.startTime + stream.length) {
claimableUnderlying = stream.totalAmount - stream.amountPaidOut;
} else {
claimableUnderlying = elapsedTime
.mul(stream.totalAmount)
.div(stream.length)
.sub(stream.amountPaidOut);
}
}
} | setSubGov | function setSubGov(address account, bool _isSubGov)
public
onlyGov
{
isSubGov[account] = _isSubGov;
emit SubGovModified(account, _isSubGov);
}
| /**
* @dev Set whether an account can open/close streams. Only callable by the current gov contract
* @param account The account to set permissions for.
* @param _isSubGov Whether or not this account can manage streams
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
2663,
2856
]
} | 3,951 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | VestingPool | contract VestingPool {
using SafeMath for uint256;
using SafeMath for uint128;
struct Stream {
address recipient;
uint128 startTime;
uint128 length;
uint256 totalAmount;
uint256 amountPaidOut;
}
/**
* @notice Governor for this contract
*/
address public gov;
/**
* @notice Pending governance for this contract
*/
address public pendingGov;
/// @notice Mapping containing valid stream managers
mapping(address => bool) public isSubGov;
/// @notice Amount of tokens allocated to streams that hasn't yet been claimed
uint256 public totalUnclaimedInStreams;
/// @notice The number of streams created so far
uint256 public streamCount;
/// @notice All streams
mapping(uint256 => Stream) public streams;
/// @notice YAM token
YAMDelegate3 public yam;
/**
* @notice Event emitted when a sub gov is enabled/disabled
*/
event SubGovModified(
address account,
bool isSubGov
);
/**
* @notice Event emitted when stream is opened
*/
event StreamOpened(
address indexed account,
uint256 indexed streamId,
uint256 length,
uint256 totalAmount
);
/**
* @notice Event emitted when stream is closed
*/
event StreamClosed(uint256 indexed streamId);
/**
* @notice Event emitted on payout
*/
event Payout(
uint256 indexed streamId,
address indexed recipient,
uint256 amount
);
/**
* @notice Event emitted when pendingGov is changed
*/
event NewPendingGov(
address oldPendingGov,
address newPendingGov
);
/**
* @notice Event emitted when gov is changed
*/
event NewGov(
address oldGov,
address newGov
);
constructor(YAMDelegate3 _yam)
public
{
gov = msg.sender;
yam = _yam;
}
modifier onlyGov() {
require(msg.sender == gov, "VestingPool::onlyGov: account is not gov");
_;
}
modifier canManageStreams() {
require(
isSubGov[msg.sender] || (msg.sender == gov),
"VestingPool::canManageStreams: account cannot manage streams"
);
_;
}
/**
* @dev Set whether an account can open/close streams. Only callable by the current gov contract
* @param account The account to set permissions for.
* @param _isSubGov Whether or not this account can manage streams
*/
function setSubGov(address account, bool _isSubGov)
public
onlyGov
{
isSubGov[account] = _isSubGov;
emit SubGovModified(account, _isSubGov);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice accepts governance over this contract
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
/**
* @dev Opens a new stream that continuously pays out.
* @param recipient Account that will receive the funds.
* @param length The amount of time in seconds that the stream lasts
* @param totalAmount The total amount to payout in the stream
*/
function openStream(
address recipient,
uint128 length,
uint256 totalAmount
)
public
canManageStreams
returns (uint256 streamIndex)
{
streamIndex = streamCount++;
streams[streamIndex] = Stream({
recipient: recipient,
length: length,
startTime: uint128(block.timestamp),
totalAmount: totalAmount,
amountPaidOut: 0
});
totalUnclaimedInStreams = totalUnclaimedInStreams.add(totalAmount);
require(
totalUnclaimedInStreams <= yam.balanceOfUnderlying(address(this)),
"VestingPool::payout: Total streaming is greater than pool's YAM balance"
);
emit StreamOpened(recipient, streamIndex, length, totalAmount);
}
/**
* @dev Closes the specified stream. Pays out pending amounts, clears out the stream, and emits a StreamClosed event.
* @param streamId The id of the stream to close.
*/
function closeStream(uint256 streamId)
public
canManageStreams
{
payout(streamId);
streams[streamId] = Stream(
address(0x0000000000000000000000000000000000000000),
0,
0,
0,
0
);
emit StreamClosed(streamId);
}
/**
* @dev Pays out pending amount in a stream
* @param streamId The id of the stream to payout.
* @return The amount paid out in underlying
*/
function payout(uint256 streamId)
public
returns (uint256 paidOut)
{
uint128 currentTime = uint128(block.timestamp);
Stream memory stream = streams[streamId];
require(
stream.startTime <= currentTime,
"VestingPool::payout: Stream hasn't started yet"
);
uint256 claimableUnderlying = _claimable(stream);
streams[streamId].amountPaidOut = stream.amountPaidOut.add(
claimableUnderlying
);
totalUnclaimedInStreams = totalUnclaimedInStreams.sub(
claimableUnderlying
);
yam.transferUnderlying(stream.recipient, claimableUnderlying);
emit Payout(streamId, stream.recipient, claimableUnderlying);
return claimableUnderlying;
}
/**
* @dev The amount that is claimable for a stream
* @param streamId The stream to get the claimabout amount for.
* @return The amount that is claimable for this stream
*/
function claimable(uint256 streamId)
external
view
returns (uint256 claimableUnderlying)
{
Stream memory stream = streams[streamId];
return _claimable(stream);
}
function _claimable(Stream memory stream)
internal
view
returns (uint256 claimableUnderlying)
{
uint128 currentTime = uint128(block.timestamp);
uint128 elapsedTime = currentTime - stream.startTime;
if (currentTime >= stream.startTime + stream.length) {
claimableUnderlying = stream.totalAmount - stream.amountPaidOut;
} else {
claimableUnderlying = elapsedTime
.mul(stream.totalAmount)
.div(stream.length)
.sub(stream.amountPaidOut);
}
}
} | _setPendingGov | function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
| /** @notice sets the pendingGov
* @param pendingGov_ The address of the contract to use for authentication.
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
2987,
3222
]
} | 3,952 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | VestingPool | contract VestingPool {
using SafeMath for uint256;
using SafeMath for uint128;
struct Stream {
address recipient;
uint128 startTime;
uint128 length;
uint256 totalAmount;
uint256 amountPaidOut;
}
/**
* @notice Governor for this contract
*/
address public gov;
/**
* @notice Pending governance for this contract
*/
address public pendingGov;
/// @notice Mapping containing valid stream managers
mapping(address => bool) public isSubGov;
/// @notice Amount of tokens allocated to streams that hasn't yet been claimed
uint256 public totalUnclaimedInStreams;
/// @notice The number of streams created so far
uint256 public streamCount;
/// @notice All streams
mapping(uint256 => Stream) public streams;
/// @notice YAM token
YAMDelegate3 public yam;
/**
* @notice Event emitted when a sub gov is enabled/disabled
*/
event SubGovModified(
address account,
bool isSubGov
);
/**
* @notice Event emitted when stream is opened
*/
event StreamOpened(
address indexed account,
uint256 indexed streamId,
uint256 length,
uint256 totalAmount
);
/**
* @notice Event emitted when stream is closed
*/
event StreamClosed(uint256 indexed streamId);
/**
* @notice Event emitted on payout
*/
event Payout(
uint256 indexed streamId,
address indexed recipient,
uint256 amount
);
/**
* @notice Event emitted when pendingGov is changed
*/
event NewPendingGov(
address oldPendingGov,
address newPendingGov
);
/**
* @notice Event emitted when gov is changed
*/
event NewGov(
address oldGov,
address newGov
);
constructor(YAMDelegate3 _yam)
public
{
gov = msg.sender;
yam = _yam;
}
modifier onlyGov() {
require(msg.sender == gov, "VestingPool::onlyGov: account is not gov");
_;
}
modifier canManageStreams() {
require(
isSubGov[msg.sender] || (msg.sender == gov),
"VestingPool::canManageStreams: account cannot manage streams"
);
_;
}
/**
* @dev Set whether an account can open/close streams. Only callable by the current gov contract
* @param account The account to set permissions for.
* @param _isSubGov Whether or not this account can manage streams
*/
function setSubGov(address account, bool _isSubGov)
public
onlyGov
{
isSubGov[account] = _isSubGov;
emit SubGovModified(account, _isSubGov);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice accepts governance over this contract
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
/**
* @dev Opens a new stream that continuously pays out.
* @param recipient Account that will receive the funds.
* @param length The amount of time in seconds that the stream lasts
* @param totalAmount The total amount to payout in the stream
*/
function openStream(
address recipient,
uint128 length,
uint256 totalAmount
)
public
canManageStreams
returns (uint256 streamIndex)
{
streamIndex = streamCount++;
streams[streamIndex] = Stream({
recipient: recipient,
length: length,
startTime: uint128(block.timestamp),
totalAmount: totalAmount,
amountPaidOut: 0
});
totalUnclaimedInStreams = totalUnclaimedInStreams.add(totalAmount);
require(
totalUnclaimedInStreams <= yam.balanceOfUnderlying(address(this)),
"VestingPool::payout: Total streaming is greater than pool's YAM balance"
);
emit StreamOpened(recipient, streamIndex, length, totalAmount);
}
/**
* @dev Closes the specified stream. Pays out pending amounts, clears out the stream, and emits a StreamClosed event.
* @param streamId The id of the stream to close.
*/
function closeStream(uint256 streamId)
public
canManageStreams
{
payout(streamId);
streams[streamId] = Stream(
address(0x0000000000000000000000000000000000000000),
0,
0,
0,
0
);
emit StreamClosed(streamId);
}
/**
* @dev Pays out pending amount in a stream
* @param streamId The id of the stream to payout.
* @return The amount paid out in underlying
*/
function payout(uint256 streamId)
public
returns (uint256 paidOut)
{
uint128 currentTime = uint128(block.timestamp);
Stream memory stream = streams[streamId];
require(
stream.startTime <= currentTime,
"VestingPool::payout: Stream hasn't started yet"
);
uint256 claimableUnderlying = _claimable(stream);
streams[streamId].amountPaidOut = stream.amountPaidOut.add(
claimableUnderlying
);
totalUnclaimedInStreams = totalUnclaimedInStreams.sub(
claimableUnderlying
);
yam.transferUnderlying(stream.recipient, claimableUnderlying);
emit Payout(streamId, stream.recipient, claimableUnderlying);
return claimableUnderlying;
}
/**
* @dev The amount that is claimable for a stream
* @param streamId The stream to get the claimabout amount for.
* @return The amount that is claimable for this stream
*/
function claimable(uint256 streamId)
external
view
returns (uint256 claimableUnderlying)
{
Stream memory stream = streams[streamId];
return _claimable(stream);
}
function _claimable(Stream memory stream)
internal
view
returns (uint256 claimableUnderlying)
{
uint128 currentTime = uint128(block.timestamp);
uint128 elapsedTime = currentTime - stream.startTime;
if (currentTime >= stream.startTime + stream.length) {
claimableUnderlying = stream.totalAmount - stream.amountPaidOut;
} else {
claimableUnderlying = elapsedTime
.mul(stream.totalAmount)
.div(stream.length)
.sub(stream.amountPaidOut);
}
}
} | _acceptGov | function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
| /** @notice accepts governance over this contract
*
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
3297,
3538
]
} | 3,953 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | VestingPool | contract VestingPool {
using SafeMath for uint256;
using SafeMath for uint128;
struct Stream {
address recipient;
uint128 startTime;
uint128 length;
uint256 totalAmount;
uint256 amountPaidOut;
}
/**
* @notice Governor for this contract
*/
address public gov;
/**
* @notice Pending governance for this contract
*/
address public pendingGov;
/// @notice Mapping containing valid stream managers
mapping(address => bool) public isSubGov;
/// @notice Amount of tokens allocated to streams that hasn't yet been claimed
uint256 public totalUnclaimedInStreams;
/// @notice The number of streams created so far
uint256 public streamCount;
/// @notice All streams
mapping(uint256 => Stream) public streams;
/// @notice YAM token
YAMDelegate3 public yam;
/**
* @notice Event emitted when a sub gov is enabled/disabled
*/
event SubGovModified(
address account,
bool isSubGov
);
/**
* @notice Event emitted when stream is opened
*/
event StreamOpened(
address indexed account,
uint256 indexed streamId,
uint256 length,
uint256 totalAmount
);
/**
* @notice Event emitted when stream is closed
*/
event StreamClosed(uint256 indexed streamId);
/**
* @notice Event emitted on payout
*/
event Payout(
uint256 indexed streamId,
address indexed recipient,
uint256 amount
);
/**
* @notice Event emitted when pendingGov is changed
*/
event NewPendingGov(
address oldPendingGov,
address newPendingGov
);
/**
* @notice Event emitted when gov is changed
*/
event NewGov(
address oldGov,
address newGov
);
constructor(YAMDelegate3 _yam)
public
{
gov = msg.sender;
yam = _yam;
}
modifier onlyGov() {
require(msg.sender == gov, "VestingPool::onlyGov: account is not gov");
_;
}
modifier canManageStreams() {
require(
isSubGov[msg.sender] || (msg.sender == gov),
"VestingPool::canManageStreams: account cannot manage streams"
);
_;
}
/**
* @dev Set whether an account can open/close streams. Only callable by the current gov contract
* @param account The account to set permissions for.
* @param _isSubGov Whether or not this account can manage streams
*/
function setSubGov(address account, bool _isSubGov)
public
onlyGov
{
isSubGov[account] = _isSubGov;
emit SubGovModified(account, _isSubGov);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice accepts governance over this contract
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
/**
* @dev Opens a new stream that continuously pays out.
* @param recipient Account that will receive the funds.
* @param length The amount of time in seconds that the stream lasts
* @param totalAmount The total amount to payout in the stream
*/
function openStream(
address recipient,
uint128 length,
uint256 totalAmount
)
public
canManageStreams
returns (uint256 streamIndex)
{
streamIndex = streamCount++;
streams[streamIndex] = Stream({
recipient: recipient,
length: length,
startTime: uint128(block.timestamp),
totalAmount: totalAmount,
amountPaidOut: 0
});
totalUnclaimedInStreams = totalUnclaimedInStreams.add(totalAmount);
require(
totalUnclaimedInStreams <= yam.balanceOfUnderlying(address(this)),
"VestingPool::payout: Total streaming is greater than pool's YAM balance"
);
emit StreamOpened(recipient, streamIndex, length, totalAmount);
}
/**
* @dev Closes the specified stream. Pays out pending amounts, clears out the stream, and emits a StreamClosed event.
* @param streamId The id of the stream to close.
*/
function closeStream(uint256 streamId)
public
canManageStreams
{
payout(streamId);
streams[streamId] = Stream(
address(0x0000000000000000000000000000000000000000),
0,
0,
0,
0
);
emit StreamClosed(streamId);
}
/**
* @dev Pays out pending amount in a stream
* @param streamId The id of the stream to payout.
* @return The amount paid out in underlying
*/
function payout(uint256 streamId)
public
returns (uint256 paidOut)
{
uint128 currentTime = uint128(block.timestamp);
Stream memory stream = streams[streamId];
require(
stream.startTime <= currentTime,
"VestingPool::payout: Stream hasn't started yet"
);
uint256 claimableUnderlying = _claimable(stream);
streams[streamId].amountPaidOut = stream.amountPaidOut.add(
claimableUnderlying
);
totalUnclaimedInStreams = totalUnclaimedInStreams.sub(
claimableUnderlying
);
yam.transferUnderlying(stream.recipient, claimableUnderlying);
emit Payout(streamId, stream.recipient, claimableUnderlying);
return claimableUnderlying;
}
/**
* @dev The amount that is claimable for a stream
* @param streamId The stream to get the claimabout amount for.
* @return The amount that is claimable for this stream
*/
function claimable(uint256 streamId)
external
view
returns (uint256 claimableUnderlying)
{
Stream memory stream = streams[streamId];
return _claimable(stream);
}
function _claimable(Stream memory stream)
internal
view
returns (uint256 claimableUnderlying)
{
uint128 currentTime = uint128(block.timestamp);
uint128 elapsedTime = currentTime - stream.startTime;
if (currentTime >= stream.startTime + stream.length) {
claimableUnderlying = stream.totalAmount - stream.amountPaidOut;
} else {
claimableUnderlying = elapsedTime
.mul(stream.totalAmount)
.div(stream.length)
.sub(stream.amountPaidOut);
}
}
} | openStream | function openStream(
address recipient,
uint128 length,
uint256 totalAmount
)
public
canManageStreams
returns (uint256 streamIndex)
{
streamIndex = streamCount++;
streams[streamIndex] = Stream({
recipient: recipient,
length: length,
startTime: uint128(block.timestamp),
totalAmount: totalAmount,
amountPaidOut: 0
});
totalUnclaimedInStreams = totalUnclaimedInStreams.add(totalAmount);
require(
totalUnclaimedInStreams <= yam.balanceOfUnderlying(address(this)),
"VestingPool::payout: Total streaming is greater than pool's YAM balance"
);
emit StreamOpened(recipient, streamIndex, length, totalAmount);
}
| /**
* @dev Opens a new stream that continuously pays out.
* @param recipient Account that will receive the funds.
* @param length The amount of time in seconds that the stream lasts
* @param totalAmount The total amount to payout in the stream
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
3823,
4654
]
} | 3,954 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | VestingPool | contract VestingPool {
using SafeMath for uint256;
using SafeMath for uint128;
struct Stream {
address recipient;
uint128 startTime;
uint128 length;
uint256 totalAmount;
uint256 amountPaidOut;
}
/**
* @notice Governor for this contract
*/
address public gov;
/**
* @notice Pending governance for this contract
*/
address public pendingGov;
/// @notice Mapping containing valid stream managers
mapping(address => bool) public isSubGov;
/// @notice Amount of tokens allocated to streams that hasn't yet been claimed
uint256 public totalUnclaimedInStreams;
/// @notice The number of streams created so far
uint256 public streamCount;
/// @notice All streams
mapping(uint256 => Stream) public streams;
/// @notice YAM token
YAMDelegate3 public yam;
/**
* @notice Event emitted when a sub gov is enabled/disabled
*/
event SubGovModified(
address account,
bool isSubGov
);
/**
* @notice Event emitted when stream is opened
*/
event StreamOpened(
address indexed account,
uint256 indexed streamId,
uint256 length,
uint256 totalAmount
);
/**
* @notice Event emitted when stream is closed
*/
event StreamClosed(uint256 indexed streamId);
/**
* @notice Event emitted on payout
*/
event Payout(
uint256 indexed streamId,
address indexed recipient,
uint256 amount
);
/**
* @notice Event emitted when pendingGov is changed
*/
event NewPendingGov(
address oldPendingGov,
address newPendingGov
);
/**
* @notice Event emitted when gov is changed
*/
event NewGov(
address oldGov,
address newGov
);
constructor(YAMDelegate3 _yam)
public
{
gov = msg.sender;
yam = _yam;
}
modifier onlyGov() {
require(msg.sender == gov, "VestingPool::onlyGov: account is not gov");
_;
}
modifier canManageStreams() {
require(
isSubGov[msg.sender] || (msg.sender == gov),
"VestingPool::canManageStreams: account cannot manage streams"
);
_;
}
/**
* @dev Set whether an account can open/close streams. Only callable by the current gov contract
* @param account The account to set permissions for.
* @param _isSubGov Whether or not this account can manage streams
*/
function setSubGov(address account, bool _isSubGov)
public
onlyGov
{
isSubGov[account] = _isSubGov;
emit SubGovModified(account, _isSubGov);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice accepts governance over this contract
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
/**
* @dev Opens a new stream that continuously pays out.
* @param recipient Account that will receive the funds.
* @param length The amount of time in seconds that the stream lasts
* @param totalAmount The total amount to payout in the stream
*/
function openStream(
address recipient,
uint128 length,
uint256 totalAmount
)
public
canManageStreams
returns (uint256 streamIndex)
{
streamIndex = streamCount++;
streams[streamIndex] = Stream({
recipient: recipient,
length: length,
startTime: uint128(block.timestamp),
totalAmount: totalAmount,
amountPaidOut: 0
});
totalUnclaimedInStreams = totalUnclaimedInStreams.add(totalAmount);
require(
totalUnclaimedInStreams <= yam.balanceOfUnderlying(address(this)),
"VestingPool::payout: Total streaming is greater than pool's YAM balance"
);
emit StreamOpened(recipient, streamIndex, length, totalAmount);
}
/**
* @dev Closes the specified stream. Pays out pending amounts, clears out the stream, and emits a StreamClosed event.
* @param streamId The id of the stream to close.
*/
function closeStream(uint256 streamId)
public
canManageStreams
{
payout(streamId);
streams[streamId] = Stream(
address(0x0000000000000000000000000000000000000000),
0,
0,
0,
0
);
emit StreamClosed(streamId);
}
/**
* @dev Pays out pending amount in a stream
* @param streamId The id of the stream to payout.
* @return The amount paid out in underlying
*/
function payout(uint256 streamId)
public
returns (uint256 paidOut)
{
uint128 currentTime = uint128(block.timestamp);
Stream memory stream = streams[streamId];
require(
stream.startTime <= currentTime,
"VestingPool::payout: Stream hasn't started yet"
);
uint256 claimableUnderlying = _claimable(stream);
streams[streamId].amountPaidOut = stream.amountPaidOut.add(
claimableUnderlying
);
totalUnclaimedInStreams = totalUnclaimedInStreams.sub(
claimableUnderlying
);
yam.transferUnderlying(stream.recipient, claimableUnderlying);
emit Payout(streamId, stream.recipient, claimableUnderlying);
return claimableUnderlying;
}
/**
* @dev The amount that is claimable for a stream
* @param streamId The stream to get the claimabout amount for.
* @return The amount that is claimable for this stream
*/
function claimable(uint256 streamId)
external
view
returns (uint256 claimableUnderlying)
{
Stream memory stream = streams[streamId];
return _claimable(stream);
}
function _claimable(Stream memory stream)
internal
view
returns (uint256 claimableUnderlying)
{
uint128 currentTime = uint128(block.timestamp);
uint128 elapsedTime = currentTime - stream.startTime;
if (currentTime >= stream.startTime + stream.length) {
claimableUnderlying = stream.totalAmount - stream.amountPaidOut;
} else {
claimableUnderlying = elapsedTime
.mul(stream.totalAmount)
.div(stream.length)
.sub(stream.amountPaidOut);
}
}
} | closeStream | function closeStream(uint256 streamId)
public
canManageStreams
{
payout(streamId);
streams[streamId] = Stream(
address(0x0000000000000000000000000000000000000000),
0,
0,
0,
0
);
emit StreamClosed(streamId);
}
| /**
* @dev Closes the specified stream. Pays out pending amounts, clears out the stream, and emits a StreamClosed event.
* @param streamId The id of the stream to close.
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
4853,
5195
]
} | 3,955 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | VestingPool | contract VestingPool {
using SafeMath for uint256;
using SafeMath for uint128;
struct Stream {
address recipient;
uint128 startTime;
uint128 length;
uint256 totalAmount;
uint256 amountPaidOut;
}
/**
* @notice Governor for this contract
*/
address public gov;
/**
* @notice Pending governance for this contract
*/
address public pendingGov;
/// @notice Mapping containing valid stream managers
mapping(address => bool) public isSubGov;
/// @notice Amount of tokens allocated to streams that hasn't yet been claimed
uint256 public totalUnclaimedInStreams;
/// @notice The number of streams created so far
uint256 public streamCount;
/// @notice All streams
mapping(uint256 => Stream) public streams;
/// @notice YAM token
YAMDelegate3 public yam;
/**
* @notice Event emitted when a sub gov is enabled/disabled
*/
event SubGovModified(
address account,
bool isSubGov
);
/**
* @notice Event emitted when stream is opened
*/
event StreamOpened(
address indexed account,
uint256 indexed streamId,
uint256 length,
uint256 totalAmount
);
/**
* @notice Event emitted when stream is closed
*/
event StreamClosed(uint256 indexed streamId);
/**
* @notice Event emitted on payout
*/
event Payout(
uint256 indexed streamId,
address indexed recipient,
uint256 amount
);
/**
* @notice Event emitted when pendingGov is changed
*/
event NewPendingGov(
address oldPendingGov,
address newPendingGov
);
/**
* @notice Event emitted when gov is changed
*/
event NewGov(
address oldGov,
address newGov
);
constructor(YAMDelegate3 _yam)
public
{
gov = msg.sender;
yam = _yam;
}
modifier onlyGov() {
require(msg.sender == gov, "VestingPool::onlyGov: account is not gov");
_;
}
modifier canManageStreams() {
require(
isSubGov[msg.sender] || (msg.sender == gov),
"VestingPool::canManageStreams: account cannot manage streams"
);
_;
}
/**
* @dev Set whether an account can open/close streams. Only callable by the current gov contract
* @param account The account to set permissions for.
* @param _isSubGov Whether or not this account can manage streams
*/
function setSubGov(address account, bool _isSubGov)
public
onlyGov
{
isSubGov[account] = _isSubGov;
emit SubGovModified(account, _isSubGov);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice accepts governance over this contract
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
/**
* @dev Opens a new stream that continuously pays out.
* @param recipient Account that will receive the funds.
* @param length The amount of time in seconds that the stream lasts
* @param totalAmount The total amount to payout in the stream
*/
function openStream(
address recipient,
uint128 length,
uint256 totalAmount
)
public
canManageStreams
returns (uint256 streamIndex)
{
streamIndex = streamCount++;
streams[streamIndex] = Stream({
recipient: recipient,
length: length,
startTime: uint128(block.timestamp),
totalAmount: totalAmount,
amountPaidOut: 0
});
totalUnclaimedInStreams = totalUnclaimedInStreams.add(totalAmount);
require(
totalUnclaimedInStreams <= yam.balanceOfUnderlying(address(this)),
"VestingPool::payout: Total streaming is greater than pool's YAM balance"
);
emit StreamOpened(recipient, streamIndex, length, totalAmount);
}
/**
* @dev Closes the specified stream. Pays out pending amounts, clears out the stream, and emits a StreamClosed event.
* @param streamId The id of the stream to close.
*/
function closeStream(uint256 streamId)
public
canManageStreams
{
payout(streamId);
streams[streamId] = Stream(
address(0x0000000000000000000000000000000000000000),
0,
0,
0,
0
);
emit StreamClosed(streamId);
}
/**
* @dev Pays out pending amount in a stream
* @param streamId The id of the stream to payout.
* @return The amount paid out in underlying
*/
function payout(uint256 streamId)
public
returns (uint256 paidOut)
{
uint128 currentTime = uint128(block.timestamp);
Stream memory stream = streams[streamId];
require(
stream.startTime <= currentTime,
"VestingPool::payout: Stream hasn't started yet"
);
uint256 claimableUnderlying = _claimable(stream);
streams[streamId].amountPaidOut = stream.amountPaidOut.add(
claimableUnderlying
);
totalUnclaimedInStreams = totalUnclaimedInStreams.sub(
claimableUnderlying
);
yam.transferUnderlying(stream.recipient, claimableUnderlying);
emit Payout(streamId, stream.recipient, claimableUnderlying);
return claimableUnderlying;
}
/**
* @dev The amount that is claimable for a stream
* @param streamId The stream to get the claimabout amount for.
* @return The amount that is claimable for this stream
*/
function claimable(uint256 streamId)
external
view
returns (uint256 claimableUnderlying)
{
Stream memory stream = streams[streamId];
return _claimable(stream);
}
function _claimable(Stream memory stream)
internal
view
returns (uint256 claimableUnderlying)
{
uint128 currentTime = uint128(block.timestamp);
uint128 elapsedTime = currentTime - stream.startTime;
if (currentTime >= stream.startTime + stream.length) {
claimableUnderlying = stream.totalAmount - stream.amountPaidOut;
} else {
claimableUnderlying = elapsedTime
.mul(stream.totalAmount)
.div(stream.length)
.sub(stream.amountPaidOut);
}
}
} | payout | function payout(uint256 streamId)
public
returns (uint256 paidOut)
{
uint128 currentTime = uint128(block.timestamp);
Stream memory stream = streams[streamId];
require(
stream.startTime <= currentTime,
"VestingPool::payout: Stream hasn't started yet"
);
uint256 claimableUnderlying = _claimable(stream);
streams[streamId].amountPaidOut = stream.amountPaidOut.add(
claimableUnderlying
);
totalUnclaimedInStreams = totalUnclaimedInStreams.sub(
claimableUnderlying
);
yam.transferUnderlying(stream.recipient, claimableUnderlying);
emit Payout(streamId, stream.recipient, claimableUnderlying);
return claimableUnderlying;
}
| /**
* @dev Pays out pending amount in a stream
* @param streamId The id of the stream to payout.
* @return The amount paid out in underlying
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
5371,
6188
]
} | 3,956 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | VestingPool | contract VestingPool {
using SafeMath for uint256;
using SafeMath for uint128;
struct Stream {
address recipient;
uint128 startTime;
uint128 length;
uint256 totalAmount;
uint256 amountPaidOut;
}
/**
* @notice Governor for this contract
*/
address public gov;
/**
* @notice Pending governance for this contract
*/
address public pendingGov;
/// @notice Mapping containing valid stream managers
mapping(address => bool) public isSubGov;
/// @notice Amount of tokens allocated to streams that hasn't yet been claimed
uint256 public totalUnclaimedInStreams;
/// @notice The number of streams created so far
uint256 public streamCount;
/// @notice All streams
mapping(uint256 => Stream) public streams;
/// @notice YAM token
YAMDelegate3 public yam;
/**
* @notice Event emitted when a sub gov is enabled/disabled
*/
event SubGovModified(
address account,
bool isSubGov
);
/**
* @notice Event emitted when stream is opened
*/
event StreamOpened(
address indexed account,
uint256 indexed streamId,
uint256 length,
uint256 totalAmount
);
/**
* @notice Event emitted when stream is closed
*/
event StreamClosed(uint256 indexed streamId);
/**
* @notice Event emitted on payout
*/
event Payout(
uint256 indexed streamId,
address indexed recipient,
uint256 amount
);
/**
* @notice Event emitted when pendingGov is changed
*/
event NewPendingGov(
address oldPendingGov,
address newPendingGov
);
/**
* @notice Event emitted when gov is changed
*/
event NewGov(
address oldGov,
address newGov
);
constructor(YAMDelegate3 _yam)
public
{
gov = msg.sender;
yam = _yam;
}
modifier onlyGov() {
require(msg.sender == gov, "VestingPool::onlyGov: account is not gov");
_;
}
modifier canManageStreams() {
require(
isSubGov[msg.sender] || (msg.sender == gov),
"VestingPool::canManageStreams: account cannot manage streams"
);
_;
}
/**
* @dev Set whether an account can open/close streams. Only callable by the current gov contract
* @param account The account to set permissions for.
* @param _isSubGov Whether or not this account can manage streams
*/
function setSubGov(address account, bool _isSubGov)
public
onlyGov
{
isSubGov[account] = _isSubGov;
emit SubGovModified(account, _isSubGov);
}
/** @notice sets the pendingGov
* @param pendingGov_ The address of the contract to use for authentication.
*/
function _setPendingGov(address pendingGov_)
external
onlyGov
{
address oldPendingGov = pendingGov;
pendingGov = pendingGov_;
emit NewPendingGov(oldPendingGov, pendingGov_);
}
/** @notice accepts governance over this contract
*
*/
function _acceptGov()
external
{
require(msg.sender == pendingGov, "!pending");
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
/**
* @dev Opens a new stream that continuously pays out.
* @param recipient Account that will receive the funds.
* @param length The amount of time in seconds that the stream lasts
* @param totalAmount The total amount to payout in the stream
*/
function openStream(
address recipient,
uint128 length,
uint256 totalAmount
)
public
canManageStreams
returns (uint256 streamIndex)
{
streamIndex = streamCount++;
streams[streamIndex] = Stream({
recipient: recipient,
length: length,
startTime: uint128(block.timestamp),
totalAmount: totalAmount,
amountPaidOut: 0
});
totalUnclaimedInStreams = totalUnclaimedInStreams.add(totalAmount);
require(
totalUnclaimedInStreams <= yam.balanceOfUnderlying(address(this)),
"VestingPool::payout: Total streaming is greater than pool's YAM balance"
);
emit StreamOpened(recipient, streamIndex, length, totalAmount);
}
/**
* @dev Closes the specified stream. Pays out pending amounts, clears out the stream, and emits a StreamClosed event.
* @param streamId The id of the stream to close.
*/
function closeStream(uint256 streamId)
public
canManageStreams
{
payout(streamId);
streams[streamId] = Stream(
address(0x0000000000000000000000000000000000000000),
0,
0,
0,
0
);
emit StreamClosed(streamId);
}
/**
* @dev Pays out pending amount in a stream
* @param streamId The id of the stream to payout.
* @return The amount paid out in underlying
*/
function payout(uint256 streamId)
public
returns (uint256 paidOut)
{
uint128 currentTime = uint128(block.timestamp);
Stream memory stream = streams[streamId];
require(
stream.startTime <= currentTime,
"VestingPool::payout: Stream hasn't started yet"
);
uint256 claimableUnderlying = _claimable(stream);
streams[streamId].amountPaidOut = stream.amountPaidOut.add(
claimableUnderlying
);
totalUnclaimedInStreams = totalUnclaimedInStreams.sub(
claimableUnderlying
);
yam.transferUnderlying(stream.recipient, claimableUnderlying);
emit Payout(streamId, stream.recipient, claimableUnderlying);
return claimableUnderlying;
}
/**
* @dev The amount that is claimable for a stream
* @param streamId The stream to get the claimabout amount for.
* @return The amount that is claimable for this stream
*/
function claimable(uint256 streamId)
external
view
returns (uint256 claimableUnderlying)
{
Stream memory stream = streams[streamId];
return _claimable(stream);
}
function _claimable(Stream memory stream)
internal
view
returns (uint256 claimableUnderlying)
{
uint128 currentTime = uint128(block.timestamp);
uint128 elapsedTime = currentTime - stream.startTime;
if (currentTime >= stream.startTime + stream.length) {
claimableUnderlying = stream.totalAmount - stream.amountPaidOut;
} else {
claimableUnderlying = elapsedTime
.mul(stream.totalAmount)
.div(stream.length)
.sub(stream.amountPaidOut);
}
}
} | claimable | function claimable(uint256 streamId)
external
view
returns (uint256 claimableUnderlying)
{
Stream memory stream = streams[streamId];
return _claimable(stream);
}
| /**
* @dev The amount that is claimable for a stream
* @param streamId The stream to get the claimabout amount for.
* @return The amount that is claimable for this stream
*/ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
6396,
6617
]
} | 3,957 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | FixedPoint | library FixedPoint {
// range: [0, 2**112 - 1]
// resolution: 1 / 2**112
struct uq112x112 {
uint224 _x;
}
// range: [0, 2**144 - 1]
// resolution: 1 / 2**112
struct uq144x112 {
uint _x;
}
uint8 private constant RESOLUTION = 112;
uint private constant Q112 = uint(1) << RESOLUTION;
uint private constant Q224 = Q112 << RESOLUTION;
// encode a uint112 as a UQ112x112
function encode(uint112 x) internal pure returns (uq112x112 memory) {
return uq112x112(uint224(x) << RESOLUTION);
}
// encodes a uint144 as a UQ144x112
function encode144(uint144 x) internal pure returns (uq144x112 memory) {
return uq144x112(uint256(x) << RESOLUTION);
}
// divide a UQ112x112 by a uint112, returning a UQ112x112
function div(uq112x112 memory self, uint112 x) internal pure returns (uq112x112 memory) {
require(x != 0, 'FixedPoint: DIV_BY_ZERO');
return uq112x112(self._x / uint224(x));
}
// multiply a UQ112x112 by a uint, returning a UQ144x112
// reverts on overflow
function mul(uq112x112 memory self, uint y) internal pure returns (uq144x112 memory) {
uint z;
require(y == 0 || (z = uint(self._x) * y) / y == uint(self._x), "FixedPoint: MULTIPLICATION_OVERFLOW");
return uq144x112(z);
}
// returns a UQ112x112 which represents the ratio of the numerator to the denominator
// equivalent to encode(numerator).div(denominator)
function fraction(uint112 numerator, uint112 denominator) internal pure returns (uq112x112 memory) {
require(denominator > 0, "FixedPoint: DIV_BY_ZERO");
return uq112x112((uint224(numerator) << RESOLUTION) / denominator);
}
// decode a UQ112x112 into a uint112 by truncating after the radix point
function decode(uq112x112 memory self) internal pure returns (uint112) {
return uint112(self._x >> RESOLUTION);
}
// decode a UQ144x112 into a uint144 by truncating after the radix point
function decode144(uq144x112 memory self) internal pure returns (uint144) {
return uint144(self._x >> RESOLUTION);
}
// take the reciprocal of a UQ112x112
function reciprocal(uq112x112 memory self) internal pure returns (uq112x112 memory) {
require(self._x != 0, 'FixedPoint: ZERO_RECIPROCAL');
return uq112x112(uint224(Q224 / self._x));
}
// square root of a UQ112x112
function sqrt(uq112x112 memory self) internal pure returns (uq112x112 memory) {
return uq112x112(uint224(Babylonian.sqrt(uint256(self._x)) << 56));
}
} | // a library for handling binary fixed point numbers (https://en.wikipedia.org/wiki/Q_(number_format)) | LineComment | encode | function encode(uint112 x) internal pure returns (uq112x112 memory) {
return uq112x112(uint224(x) << RESOLUTION);
}
| // encode a uint112 as a UQ112x112 | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
450,
584
]
} | 3,958 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | FixedPoint | library FixedPoint {
// range: [0, 2**112 - 1]
// resolution: 1 / 2**112
struct uq112x112 {
uint224 _x;
}
// range: [0, 2**144 - 1]
// resolution: 1 / 2**112
struct uq144x112 {
uint _x;
}
uint8 private constant RESOLUTION = 112;
uint private constant Q112 = uint(1) << RESOLUTION;
uint private constant Q224 = Q112 << RESOLUTION;
// encode a uint112 as a UQ112x112
function encode(uint112 x) internal pure returns (uq112x112 memory) {
return uq112x112(uint224(x) << RESOLUTION);
}
// encodes a uint144 as a UQ144x112
function encode144(uint144 x) internal pure returns (uq144x112 memory) {
return uq144x112(uint256(x) << RESOLUTION);
}
// divide a UQ112x112 by a uint112, returning a UQ112x112
function div(uq112x112 memory self, uint112 x) internal pure returns (uq112x112 memory) {
require(x != 0, 'FixedPoint: DIV_BY_ZERO');
return uq112x112(self._x / uint224(x));
}
// multiply a UQ112x112 by a uint, returning a UQ144x112
// reverts on overflow
function mul(uq112x112 memory self, uint y) internal pure returns (uq144x112 memory) {
uint z;
require(y == 0 || (z = uint(self._x) * y) / y == uint(self._x), "FixedPoint: MULTIPLICATION_OVERFLOW");
return uq144x112(z);
}
// returns a UQ112x112 which represents the ratio of the numerator to the denominator
// equivalent to encode(numerator).div(denominator)
function fraction(uint112 numerator, uint112 denominator) internal pure returns (uq112x112 memory) {
require(denominator > 0, "FixedPoint: DIV_BY_ZERO");
return uq112x112((uint224(numerator) << RESOLUTION) / denominator);
}
// decode a UQ112x112 into a uint112 by truncating after the radix point
function decode(uq112x112 memory self) internal pure returns (uint112) {
return uint112(self._x >> RESOLUTION);
}
// decode a UQ144x112 into a uint144 by truncating after the radix point
function decode144(uq144x112 memory self) internal pure returns (uint144) {
return uint144(self._x >> RESOLUTION);
}
// take the reciprocal of a UQ112x112
function reciprocal(uq112x112 memory self) internal pure returns (uq112x112 memory) {
require(self._x != 0, 'FixedPoint: ZERO_RECIPROCAL');
return uq112x112(uint224(Q224 / self._x));
}
// square root of a UQ112x112
function sqrt(uq112x112 memory self) internal pure returns (uq112x112 memory) {
return uq112x112(uint224(Babylonian.sqrt(uint256(self._x)) << 56));
}
} | // a library for handling binary fixed point numbers (https://en.wikipedia.org/wiki/Q_(number_format)) | LineComment | encode144 | function encode144(uint144 x) internal pure returns (uq144x112 memory) {
return uq144x112(uint256(x) << RESOLUTION);
}
| // encodes a uint144 as a UQ144x112 | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
628,
765
]
} | 3,959 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | FixedPoint | library FixedPoint {
// range: [0, 2**112 - 1]
// resolution: 1 / 2**112
struct uq112x112 {
uint224 _x;
}
// range: [0, 2**144 - 1]
// resolution: 1 / 2**112
struct uq144x112 {
uint _x;
}
uint8 private constant RESOLUTION = 112;
uint private constant Q112 = uint(1) << RESOLUTION;
uint private constant Q224 = Q112 << RESOLUTION;
// encode a uint112 as a UQ112x112
function encode(uint112 x) internal pure returns (uq112x112 memory) {
return uq112x112(uint224(x) << RESOLUTION);
}
// encodes a uint144 as a UQ144x112
function encode144(uint144 x) internal pure returns (uq144x112 memory) {
return uq144x112(uint256(x) << RESOLUTION);
}
// divide a UQ112x112 by a uint112, returning a UQ112x112
function div(uq112x112 memory self, uint112 x) internal pure returns (uq112x112 memory) {
require(x != 0, 'FixedPoint: DIV_BY_ZERO');
return uq112x112(self._x / uint224(x));
}
// multiply a UQ112x112 by a uint, returning a UQ144x112
// reverts on overflow
function mul(uq112x112 memory self, uint y) internal pure returns (uq144x112 memory) {
uint z;
require(y == 0 || (z = uint(self._x) * y) / y == uint(self._x), "FixedPoint: MULTIPLICATION_OVERFLOW");
return uq144x112(z);
}
// returns a UQ112x112 which represents the ratio of the numerator to the denominator
// equivalent to encode(numerator).div(denominator)
function fraction(uint112 numerator, uint112 denominator) internal pure returns (uq112x112 memory) {
require(denominator > 0, "FixedPoint: DIV_BY_ZERO");
return uq112x112((uint224(numerator) << RESOLUTION) / denominator);
}
// decode a UQ112x112 into a uint112 by truncating after the radix point
function decode(uq112x112 memory self) internal pure returns (uint112) {
return uint112(self._x >> RESOLUTION);
}
// decode a UQ144x112 into a uint144 by truncating after the radix point
function decode144(uq144x112 memory self) internal pure returns (uint144) {
return uint144(self._x >> RESOLUTION);
}
// take the reciprocal of a UQ112x112
function reciprocal(uq112x112 memory self) internal pure returns (uq112x112 memory) {
require(self._x != 0, 'FixedPoint: ZERO_RECIPROCAL');
return uq112x112(uint224(Q224 / self._x));
}
// square root of a UQ112x112
function sqrt(uq112x112 memory self) internal pure returns (uq112x112 memory) {
return uq112x112(uint224(Babylonian.sqrt(uint256(self._x)) << 56));
}
} | // a library for handling binary fixed point numbers (https://en.wikipedia.org/wiki/Q_(number_format)) | LineComment | div | function div(uq112x112 memory self, uint112 x) internal pure returns (uq112x112 memory) {
require(x != 0, 'FixedPoint: DIV_BY_ZERO');
return uq112x112(self._x / uint224(x));
}
| // divide a UQ112x112 by a uint112, returning a UQ112x112 | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
831,
1034
]
} | 3,960 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | FixedPoint | library FixedPoint {
// range: [0, 2**112 - 1]
// resolution: 1 / 2**112
struct uq112x112 {
uint224 _x;
}
// range: [0, 2**144 - 1]
// resolution: 1 / 2**112
struct uq144x112 {
uint _x;
}
uint8 private constant RESOLUTION = 112;
uint private constant Q112 = uint(1) << RESOLUTION;
uint private constant Q224 = Q112 << RESOLUTION;
// encode a uint112 as a UQ112x112
function encode(uint112 x) internal pure returns (uq112x112 memory) {
return uq112x112(uint224(x) << RESOLUTION);
}
// encodes a uint144 as a UQ144x112
function encode144(uint144 x) internal pure returns (uq144x112 memory) {
return uq144x112(uint256(x) << RESOLUTION);
}
// divide a UQ112x112 by a uint112, returning a UQ112x112
function div(uq112x112 memory self, uint112 x) internal pure returns (uq112x112 memory) {
require(x != 0, 'FixedPoint: DIV_BY_ZERO');
return uq112x112(self._x / uint224(x));
}
// multiply a UQ112x112 by a uint, returning a UQ144x112
// reverts on overflow
function mul(uq112x112 memory self, uint y) internal pure returns (uq144x112 memory) {
uint z;
require(y == 0 || (z = uint(self._x) * y) / y == uint(self._x), "FixedPoint: MULTIPLICATION_OVERFLOW");
return uq144x112(z);
}
// returns a UQ112x112 which represents the ratio of the numerator to the denominator
// equivalent to encode(numerator).div(denominator)
function fraction(uint112 numerator, uint112 denominator) internal pure returns (uq112x112 memory) {
require(denominator > 0, "FixedPoint: DIV_BY_ZERO");
return uq112x112((uint224(numerator) << RESOLUTION) / denominator);
}
// decode a UQ112x112 into a uint112 by truncating after the radix point
function decode(uq112x112 memory self) internal pure returns (uint112) {
return uint112(self._x >> RESOLUTION);
}
// decode a UQ144x112 into a uint144 by truncating after the radix point
function decode144(uq144x112 memory self) internal pure returns (uint144) {
return uint144(self._x >> RESOLUTION);
}
// take the reciprocal of a UQ112x112
function reciprocal(uq112x112 memory self) internal pure returns (uq112x112 memory) {
require(self._x != 0, 'FixedPoint: ZERO_RECIPROCAL');
return uq112x112(uint224(Q224 / self._x));
}
// square root of a UQ112x112
function sqrt(uq112x112 memory self) internal pure returns (uq112x112 memory) {
return uq112x112(uint224(Babylonian.sqrt(uint256(self._x)) << 56));
}
} | // a library for handling binary fixed point numbers (https://en.wikipedia.org/wiki/Q_(number_format)) | LineComment | mul | function mul(uq112x112 memory self, uint y) internal pure returns (uq144x112 memory) {
uint z;
require(y == 0 || (z = uint(self._x) * y) / y == uint(self._x), "FixedPoint: MULTIPLICATION_OVERFLOW");
return uq144x112(z);
}
| // multiply a UQ112x112 by a uint, returning a UQ144x112
// reverts on overflow | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
1127,
1385
]
} | 3,961 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | FixedPoint | library FixedPoint {
// range: [0, 2**112 - 1]
// resolution: 1 / 2**112
struct uq112x112 {
uint224 _x;
}
// range: [0, 2**144 - 1]
// resolution: 1 / 2**112
struct uq144x112 {
uint _x;
}
uint8 private constant RESOLUTION = 112;
uint private constant Q112 = uint(1) << RESOLUTION;
uint private constant Q224 = Q112 << RESOLUTION;
// encode a uint112 as a UQ112x112
function encode(uint112 x) internal pure returns (uq112x112 memory) {
return uq112x112(uint224(x) << RESOLUTION);
}
// encodes a uint144 as a UQ144x112
function encode144(uint144 x) internal pure returns (uq144x112 memory) {
return uq144x112(uint256(x) << RESOLUTION);
}
// divide a UQ112x112 by a uint112, returning a UQ112x112
function div(uq112x112 memory self, uint112 x) internal pure returns (uq112x112 memory) {
require(x != 0, 'FixedPoint: DIV_BY_ZERO');
return uq112x112(self._x / uint224(x));
}
// multiply a UQ112x112 by a uint, returning a UQ144x112
// reverts on overflow
function mul(uq112x112 memory self, uint y) internal pure returns (uq144x112 memory) {
uint z;
require(y == 0 || (z = uint(self._x) * y) / y == uint(self._x), "FixedPoint: MULTIPLICATION_OVERFLOW");
return uq144x112(z);
}
// returns a UQ112x112 which represents the ratio of the numerator to the denominator
// equivalent to encode(numerator).div(denominator)
function fraction(uint112 numerator, uint112 denominator) internal pure returns (uq112x112 memory) {
require(denominator > 0, "FixedPoint: DIV_BY_ZERO");
return uq112x112((uint224(numerator) << RESOLUTION) / denominator);
}
// decode a UQ112x112 into a uint112 by truncating after the radix point
function decode(uq112x112 memory self) internal pure returns (uint112) {
return uint112(self._x >> RESOLUTION);
}
// decode a UQ144x112 into a uint144 by truncating after the radix point
function decode144(uq144x112 memory self) internal pure returns (uint144) {
return uint144(self._x >> RESOLUTION);
}
// take the reciprocal of a UQ112x112
function reciprocal(uq112x112 memory self) internal pure returns (uq112x112 memory) {
require(self._x != 0, 'FixedPoint: ZERO_RECIPROCAL');
return uq112x112(uint224(Q224 / self._x));
}
// square root of a UQ112x112
function sqrt(uq112x112 memory self) internal pure returns (uq112x112 memory) {
return uq112x112(uint224(Babylonian.sqrt(uint256(self._x)) << 56));
}
} | // a library for handling binary fixed point numbers (https://en.wikipedia.org/wiki/Q_(number_format)) | LineComment | fraction | function fraction(uint112 numerator, uint112 denominator) internal pure returns (uq112x112 memory) {
require(denominator > 0, "FixedPoint: DIV_BY_ZERO");
return uq112x112((uint224(numerator) << RESOLUTION) / denominator);
}
| // returns a UQ112x112 which represents the ratio of the numerator to the denominator
// equivalent to encode(numerator).div(denominator) | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
1536,
1787
]
} | 3,962 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | FixedPoint | library FixedPoint {
// range: [0, 2**112 - 1]
// resolution: 1 / 2**112
struct uq112x112 {
uint224 _x;
}
// range: [0, 2**144 - 1]
// resolution: 1 / 2**112
struct uq144x112 {
uint _x;
}
uint8 private constant RESOLUTION = 112;
uint private constant Q112 = uint(1) << RESOLUTION;
uint private constant Q224 = Q112 << RESOLUTION;
// encode a uint112 as a UQ112x112
function encode(uint112 x) internal pure returns (uq112x112 memory) {
return uq112x112(uint224(x) << RESOLUTION);
}
// encodes a uint144 as a UQ144x112
function encode144(uint144 x) internal pure returns (uq144x112 memory) {
return uq144x112(uint256(x) << RESOLUTION);
}
// divide a UQ112x112 by a uint112, returning a UQ112x112
function div(uq112x112 memory self, uint112 x) internal pure returns (uq112x112 memory) {
require(x != 0, 'FixedPoint: DIV_BY_ZERO');
return uq112x112(self._x / uint224(x));
}
// multiply a UQ112x112 by a uint, returning a UQ144x112
// reverts on overflow
function mul(uq112x112 memory self, uint y) internal pure returns (uq144x112 memory) {
uint z;
require(y == 0 || (z = uint(self._x) * y) / y == uint(self._x), "FixedPoint: MULTIPLICATION_OVERFLOW");
return uq144x112(z);
}
// returns a UQ112x112 which represents the ratio of the numerator to the denominator
// equivalent to encode(numerator).div(denominator)
function fraction(uint112 numerator, uint112 denominator) internal pure returns (uq112x112 memory) {
require(denominator > 0, "FixedPoint: DIV_BY_ZERO");
return uq112x112((uint224(numerator) << RESOLUTION) / denominator);
}
// decode a UQ112x112 into a uint112 by truncating after the radix point
function decode(uq112x112 memory self) internal pure returns (uint112) {
return uint112(self._x >> RESOLUTION);
}
// decode a UQ144x112 into a uint144 by truncating after the radix point
function decode144(uq144x112 memory self) internal pure returns (uint144) {
return uint144(self._x >> RESOLUTION);
}
// take the reciprocal of a UQ112x112
function reciprocal(uq112x112 memory self) internal pure returns (uq112x112 memory) {
require(self._x != 0, 'FixedPoint: ZERO_RECIPROCAL');
return uq112x112(uint224(Q224 / self._x));
}
// square root of a UQ112x112
function sqrt(uq112x112 memory self) internal pure returns (uq112x112 memory) {
return uq112x112(uint224(Babylonian.sqrt(uint256(self._x)) << 56));
}
} | // a library for handling binary fixed point numbers (https://en.wikipedia.org/wiki/Q_(number_format)) | LineComment | decode | function decode(uq112x112 memory self) internal pure returns (uint112) {
return uint112(self._x >> RESOLUTION);
}
| // decode a UQ112x112 into a uint112 by truncating after the radix point | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
1868,
2000
]
} | 3,963 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | FixedPoint | library FixedPoint {
// range: [0, 2**112 - 1]
// resolution: 1 / 2**112
struct uq112x112 {
uint224 _x;
}
// range: [0, 2**144 - 1]
// resolution: 1 / 2**112
struct uq144x112 {
uint _x;
}
uint8 private constant RESOLUTION = 112;
uint private constant Q112 = uint(1) << RESOLUTION;
uint private constant Q224 = Q112 << RESOLUTION;
// encode a uint112 as a UQ112x112
function encode(uint112 x) internal pure returns (uq112x112 memory) {
return uq112x112(uint224(x) << RESOLUTION);
}
// encodes a uint144 as a UQ144x112
function encode144(uint144 x) internal pure returns (uq144x112 memory) {
return uq144x112(uint256(x) << RESOLUTION);
}
// divide a UQ112x112 by a uint112, returning a UQ112x112
function div(uq112x112 memory self, uint112 x) internal pure returns (uq112x112 memory) {
require(x != 0, 'FixedPoint: DIV_BY_ZERO');
return uq112x112(self._x / uint224(x));
}
// multiply a UQ112x112 by a uint, returning a UQ144x112
// reverts on overflow
function mul(uq112x112 memory self, uint y) internal pure returns (uq144x112 memory) {
uint z;
require(y == 0 || (z = uint(self._x) * y) / y == uint(self._x), "FixedPoint: MULTIPLICATION_OVERFLOW");
return uq144x112(z);
}
// returns a UQ112x112 which represents the ratio of the numerator to the denominator
// equivalent to encode(numerator).div(denominator)
function fraction(uint112 numerator, uint112 denominator) internal pure returns (uq112x112 memory) {
require(denominator > 0, "FixedPoint: DIV_BY_ZERO");
return uq112x112((uint224(numerator) << RESOLUTION) / denominator);
}
// decode a UQ112x112 into a uint112 by truncating after the radix point
function decode(uq112x112 memory self) internal pure returns (uint112) {
return uint112(self._x >> RESOLUTION);
}
// decode a UQ144x112 into a uint144 by truncating after the radix point
function decode144(uq144x112 memory self) internal pure returns (uint144) {
return uint144(self._x >> RESOLUTION);
}
// take the reciprocal of a UQ112x112
function reciprocal(uq112x112 memory self) internal pure returns (uq112x112 memory) {
require(self._x != 0, 'FixedPoint: ZERO_RECIPROCAL');
return uq112x112(uint224(Q224 / self._x));
}
// square root of a UQ112x112
function sqrt(uq112x112 memory self) internal pure returns (uq112x112 memory) {
return uq112x112(uint224(Babylonian.sqrt(uint256(self._x)) << 56));
}
} | // a library for handling binary fixed point numbers (https://en.wikipedia.org/wiki/Q_(number_format)) | LineComment | decode144 | function decode144(uq144x112 memory self) internal pure returns (uint144) {
return uint144(self._x >> RESOLUTION);
}
| // decode a UQ144x112 into a uint144 by truncating after the radix point | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
2081,
2216
]
} | 3,964 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | FixedPoint | library FixedPoint {
// range: [0, 2**112 - 1]
// resolution: 1 / 2**112
struct uq112x112 {
uint224 _x;
}
// range: [0, 2**144 - 1]
// resolution: 1 / 2**112
struct uq144x112 {
uint _x;
}
uint8 private constant RESOLUTION = 112;
uint private constant Q112 = uint(1) << RESOLUTION;
uint private constant Q224 = Q112 << RESOLUTION;
// encode a uint112 as a UQ112x112
function encode(uint112 x) internal pure returns (uq112x112 memory) {
return uq112x112(uint224(x) << RESOLUTION);
}
// encodes a uint144 as a UQ144x112
function encode144(uint144 x) internal pure returns (uq144x112 memory) {
return uq144x112(uint256(x) << RESOLUTION);
}
// divide a UQ112x112 by a uint112, returning a UQ112x112
function div(uq112x112 memory self, uint112 x) internal pure returns (uq112x112 memory) {
require(x != 0, 'FixedPoint: DIV_BY_ZERO');
return uq112x112(self._x / uint224(x));
}
// multiply a UQ112x112 by a uint, returning a UQ144x112
// reverts on overflow
function mul(uq112x112 memory self, uint y) internal pure returns (uq144x112 memory) {
uint z;
require(y == 0 || (z = uint(self._x) * y) / y == uint(self._x), "FixedPoint: MULTIPLICATION_OVERFLOW");
return uq144x112(z);
}
// returns a UQ112x112 which represents the ratio of the numerator to the denominator
// equivalent to encode(numerator).div(denominator)
function fraction(uint112 numerator, uint112 denominator) internal pure returns (uq112x112 memory) {
require(denominator > 0, "FixedPoint: DIV_BY_ZERO");
return uq112x112((uint224(numerator) << RESOLUTION) / denominator);
}
// decode a UQ112x112 into a uint112 by truncating after the radix point
function decode(uq112x112 memory self) internal pure returns (uint112) {
return uint112(self._x >> RESOLUTION);
}
// decode a UQ144x112 into a uint144 by truncating after the radix point
function decode144(uq144x112 memory self) internal pure returns (uint144) {
return uint144(self._x >> RESOLUTION);
}
// take the reciprocal of a UQ112x112
function reciprocal(uq112x112 memory self) internal pure returns (uq112x112 memory) {
require(self._x != 0, 'FixedPoint: ZERO_RECIPROCAL');
return uq112x112(uint224(Q224 / self._x));
}
// square root of a UQ112x112
function sqrt(uq112x112 memory self) internal pure returns (uq112x112 memory) {
return uq112x112(uint224(Babylonian.sqrt(uint256(self._x)) << 56));
}
} | // a library for handling binary fixed point numbers (https://en.wikipedia.org/wiki/Q_(number_format)) | LineComment | reciprocal | function reciprocal(uq112x112 memory self) internal pure returns (uq112x112 memory) {
require(self._x != 0, 'FixedPoint: ZERO_RECIPROCAL');
return uq112x112(uint224(Q224 / self._x));
}
| // take the reciprocal of a UQ112x112 | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
2262,
2474
]
} | 3,965 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | FixedPoint | library FixedPoint {
// range: [0, 2**112 - 1]
// resolution: 1 / 2**112
struct uq112x112 {
uint224 _x;
}
// range: [0, 2**144 - 1]
// resolution: 1 / 2**112
struct uq144x112 {
uint _x;
}
uint8 private constant RESOLUTION = 112;
uint private constant Q112 = uint(1) << RESOLUTION;
uint private constant Q224 = Q112 << RESOLUTION;
// encode a uint112 as a UQ112x112
function encode(uint112 x) internal pure returns (uq112x112 memory) {
return uq112x112(uint224(x) << RESOLUTION);
}
// encodes a uint144 as a UQ144x112
function encode144(uint144 x) internal pure returns (uq144x112 memory) {
return uq144x112(uint256(x) << RESOLUTION);
}
// divide a UQ112x112 by a uint112, returning a UQ112x112
function div(uq112x112 memory self, uint112 x) internal pure returns (uq112x112 memory) {
require(x != 0, 'FixedPoint: DIV_BY_ZERO');
return uq112x112(self._x / uint224(x));
}
// multiply a UQ112x112 by a uint, returning a UQ144x112
// reverts on overflow
function mul(uq112x112 memory self, uint y) internal pure returns (uq144x112 memory) {
uint z;
require(y == 0 || (z = uint(self._x) * y) / y == uint(self._x), "FixedPoint: MULTIPLICATION_OVERFLOW");
return uq144x112(z);
}
// returns a UQ112x112 which represents the ratio of the numerator to the denominator
// equivalent to encode(numerator).div(denominator)
function fraction(uint112 numerator, uint112 denominator) internal pure returns (uq112x112 memory) {
require(denominator > 0, "FixedPoint: DIV_BY_ZERO");
return uq112x112((uint224(numerator) << RESOLUTION) / denominator);
}
// decode a UQ112x112 into a uint112 by truncating after the radix point
function decode(uq112x112 memory self) internal pure returns (uint112) {
return uint112(self._x >> RESOLUTION);
}
// decode a UQ144x112 into a uint144 by truncating after the radix point
function decode144(uq144x112 memory self) internal pure returns (uint144) {
return uint144(self._x >> RESOLUTION);
}
// take the reciprocal of a UQ112x112
function reciprocal(uq112x112 memory self) internal pure returns (uq112x112 memory) {
require(self._x != 0, 'FixedPoint: ZERO_RECIPROCAL');
return uq112x112(uint224(Q224 / self._x));
}
// square root of a UQ112x112
function sqrt(uq112x112 memory self) internal pure returns (uq112x112 memory) {
return uq112x112(uint224(Babylonian.sqrt(uint256(self._x)) << 56));
}
} | // a library for handling binary fixed point numbers (https://en.wikipedia.org/wiki/Q_(number_format)) | LineComment | sqrt | function sqrt(uq112x112 memory self) internal pure returns (uq112x112 memory) {
return uq112x112(uint224(Babylonian.sqrt(uint256(self._x)) << 56));
}
| // square root of a UQ112x112 | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
2512,
2680
]
} | 3,966 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | UniswapV2OracleLibrary | library UniswapV2OracleLibrary {
using FixedPoint for *;
// helper function that returns the current block timestamp within the range of uint32, i.e. [0, 2**32 - 1]
function currentBlockTimestamp() internal view returns (uint32) {
return uint32(block.timestamp % 2 ** 32);
}
// produces the cumulative price using counterfactuals to save gas and avoid a call to sync.
function currentCumulativePrices(
address pair,
bool isToken0
) internal view returns (uint priceCumulative, uint32 blockTimestamp) {
blockTimestamp = currentBlockTimestamp();
(uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast) = IUniswapV2Pair(pair).getReserves();
if (isToken0) {
priceCumulative = IUniswapV2Pair(pair).price0CumulativeLast();
// if time has elapsed since the last update on the pair, mock the accumulated price values
if (blockTimestampLast != blockTimestamp) {
// subtraction overflow is desired
uint32 timeElapsed = blockTimestamp - blockTimestampLast;
// addition overflow is desired
// counterfactual
priceCumulative += uint(FixedPoint.fraction(reserve1, reserve0)._x) * timeElapsed;
}
} else {
priceCumulative = IUniswapV2Pair(pair).price1CumulativeLast();
// if time has elapsed since the last update on the pair, mock the accumulated price values
if (blockTimestampLast != blockTimestamp) {
// subtraction overflow is desired
uint32 timeElapsed = blockTimestamp - blockTimestampLast;
// addition overflow is desired
// counterfactual
priceCumulative += uint(FixedPoint.fraction(reserve0, reserve1)._x) * timeElapsed;
}
}
}
} | // library with helper methods for oracles that are concerned with computing average prices | LineComment | currentBlockTimestamp | function currentBlockTimestamp() internal view returns (uint32) {
return uint32(block.timestamp % 2 ** 32);
}
| // helper function that returns the current block timestamp within the range of uint32, i.e. [0, 2**32 - 1] | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
178,
306
]
} | 3,967 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | UniswapV2OracleLibrary | library UniswapV2OracleLibrary {
using FixedPoint for *;
// helper function that returns the current block timestamp within the range of uint32, i.e. [0, 2**32 - 1]
function currentBlockTimestamp() internal view returns (uint32) {
return uint32(block.timestamp % 2 ** 32);
}
// produces the cumulative price using counterfactuals to save gas and avoid a call to sync.
function currentCumulativePrices(
address pair,
bool isToken0
) internal view returns (uint priceCumulative, uint32 blockTimestamp) {
blockTimestamp = currentBlockTimestamp();
(uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast) = IUniswapV2Pair(pair).getReserves();
if (isToken0) {
priceCumulative = IUniswapV2Pair(pair).price0CumulativeLast();
// if time has elapsed since the last update on the pair, mock the accumulated price values
if (blockTimestampLast != blockTimestamp) {
// subtraction overflow is desired
uint32 timeElapsed = blockTimestamp - blockTimestampLast;
// addition overflow is desired
// counterfactual
priceCumulative += uint(FixedPoint.fraction(reserve1, reserve0)._x) * timeElapsed;
}
} else {
priceCumulative = IUniswapV2Pair(pair).price1CumulativeLast();
// if time has elapsed since the last update on the pair, mock the accumulated price values
if (blockTimestampLast != blockTimestamp) {
// subtraction overflow is desired
uint32 timeElapsed = blockTimestamp - blockTimestampLast;
// addition overflow is desired
// counterfactual
priceCumulative += uint(FixedPoint.fraction(reserve0, reserve1)._x) * timeElapsed;
}
}
}
} | // library with helper methods for oracles that are concerned with computing average prices | LineComment | currentCumulativePrices | function currentCumulativePrices(
address pair,
bool isToken0
) internal view returns (uint priceCumulative, uint32 blockTimestamp) {
blockTimestamp = currentBlockTimestamp();
(uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast) = IUniswapV2Pair(pair).getReserves();
if (isToken0) {
priceCumulative = IUniswapV2Pair(pair).price0CumulativeLast();
// if time has elapsed since the last update on the pair, mock the accumulated price values
if (blockTimestampLast != blockTimestamp) {
// subtraction overflow is desired
uint32 timeElapsed = blockTimestamp - blockTimestampLast;
// addition overflow is desired
// counterfactual
priceCumulative += uint(FixedPoint.fraction(reserve1, reserve0)._x) * timeElapsed;
}
} else {
priceCumulative = IUniswapV2Pair(pair).price1CumulativeLast();
// if time has elapsed since the last update on the pair, mock the accumulated price values
if (blockTimestampLast != blockTimestamp) {
// subtraction overflow is desired
uint32 timeElapsed = blockTimestamp - blockTimestampLast;
// addition overflow is desired
// counterfactual
priceCumulative += uint(FixedPoint.fraction(reserve0, reserve1)._x) * timeElapsed;
}
}
}
| // produces the cumulative price using counterfactuals to save gas and avoid a call to sync. | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
407,
1887
]
} | 3,968 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | TWAPBound | contract TWAPBound is YamSubGoverned {
using SafeMath for uint256;
uint256 public constant BASE = 10**18;
/// @notice For a sale of a specific amount
uint256 public sell_amount;
/// @notice For a purchase of a specific amount
uint256 public purchase_amount;
/// @notice Token to be sold
address public sell_token;
/// @notice Token to be puchased
address public purchase_token;
/// @notice Current uniswap pair for purchase & sale tokens
address public uniswap_pair1;
/// @notice Second uniswap pair for if TWAP uses two markets to determine price (for liquidity purposes)
address public uniswap_pair2;
/// @notice Flag for if purchase token is toke 0 in uniswap pair 2
bool public purchaseTokenIs0;
/// @notice Flag for if sale token is token 0 in uniswap pair
bool public saleTokenIs0;
/// @notice TWAP for first hop
uint256 public priceAverageSell;
/// @notice TWAP for second hop
uint256 public priceAverageBuy;
/// @notice last TWAP update time
uint32 public blockTimestampLast;
/// @notice last TWAP cumulative price;
uint256 public priceCumulativeLastSell;
/// @notice last TWAP cumulative price for two hop pairs;
uint256 public priceCumulativeLastBuy;
/// @notice Time between TWAP updates
uint256 public period;
/// @notice counts number of twaps
uint256 public twap_counter;
/// @notice Grace period after last twap update for a trade to occur
uint256 public grace = 60 * 60; // 1 hour
uint256 public constant MAX_BOUND = 10**17;
/// @notice % bound away from TWAP price
uint256 public twap_bounds;
/// @notice denotes a trade as complete
bool public complete;
bool public isSale;
function setup_twap_bound (
address sell_token_,
address purchase_token_,
uint256 amount_,
bool is_sale,
uint256 twap_period,
uint256 twap_bounds_,
address uniswap1,
address uniswap2, // if two hop
uint256 grace_ // length after twap update that it can occur
)
public
onlyGovOrSubGov
{
require(twap_bounds_ <= MAX_BOUND, "slippage too high");
sell_token = sell_token_;
purchase_token = purchase_token_;
period = twap_period;
twap_bounds = twap_bounds_;
isSale = is_sale;
if (is_sale) {
sell_amount = amount_;
purchase_amount = 0;
} else {
purchase_amount = amount_;
sell_amount = 0;
}
complete = false;
grace = grace_;
reset_twap(uniswap1, uniswap2, sell_token, purchase_token);
}
function reset_twap(
address uniswap1,
address uniswap2,
address sell_token_,
address purchase_token_
)
internal
{
uniswap_pair1 = uniswap1;
uniswap_pair2 = uniswap2;
blockTimestampLast = 0;
priceCumulativeLastSell = 0;
priceCumulativeLastBuy = 0;
priceAverageBuy = 0;
if (IUniswapV2Pair(uniswap1).token0() == sell_token_) {
saleTokenIs0 = true;
} else {
saleTokenIs0 = false;
}
if (uniswap2 != address(0)) {
if (IUniswapV2Pair(uniswap2).token0() == purchase_token_) {
purchaseTokenIs0 = true;
} else {
purchaseTokenIs0 = false;
}
}
update_twap();
twap_counter = 0;
}
function quote(
uint256 purchaseAmount,
uint256 saleAmount
)
public
view
returns (uint256)
{
uint256 decs = uint256(ExpandedERC20(sell_token).decimals());
uint256 one = 10**decs;
return purchaseAmount.mul(one).div(saleAmount);
}
function bounds()
public
view
returns (uint256)
{
uint256 uniswap_quote = consult();
uint256 minimum = uniswap_quote.mul(BASE.sub(twap_bounds)).div(BASE);
return minimum;
}
function bounds_max()
public
view
returns (uint256)
{
uint256 uniswap_quote = consult();
uint256 maximum = uniswap_quote.mul(BASE.add(twap_bounds)).div(BASE);
return maximum;
}
function withinBounds (
uint256 purchaseAmount,
uint256 saleAmount
)
internal
view
returns (bool)
{
uint256 quoted = quote(purchaseAmount, saleAmount);
uint256 minimum = bounds();
uint256 maximum = bounds_max();
return quoted > minimum && quoted < maximum;
}
function withinBoundsWithQuote (
uint256 quoted
)
internal
view
returns (bool)
{
uint256 minimum = bounds();
uint256 maximum = bounds_max();
return quoted > minimum && quoted < maximum;
}
// callable by anyone
function update_twap()
public
{
(uint256 sell_token_priceCumulative, uint32 blockTimestamp) =
UniswapV2OracleLibrary.currentCumulativePrices(uniswap_pair1, saleTokenIs0);
uint32 timeElapsed = blockTimestamp - blockTimestampLast; // overflow is desired
// ensure that at least one full period has passed since the last update
require(timeElapsed >= period, 'OTC: PERIOD_NOT_ELAPSED');
// overflow is desired
priceAverageSell = uint256(uint224((sell_token_priceCumulative - priceCumulativeLastSell) / timeElapsed));
priceCumulativeLastSell = sell_token_priceCumulative;
if (uniswap_pair2 != address(0)) {
// two hop
(uint256 buy_token_priceCumulative, ) =
UniswapV2OracleLibrary.currentCumulativePrices(uniswap_pair2, !purchaseTokenIs0);
priceAverageBuy = uint256(uint224((buy_token_priceCumulative - priceCumulativeLastBuy) / timeElapsed));
priceCumulativeLastBuy = buy_token_priceCumulative;
}
twap_counter = twap_counter.add(1);
blockTimestampLast = blockTimestamp;
}
function consult()
public
view
returns (uint256)
{
if (uniswap_pair2 != address(0)) {
// two hop
uint256 purchasePrice;
uint256 salePrice;
uint256 one;
if (saleTokenIs0) {
uint8 decs = ExpandedERC20(sell_token).decimals();
require(decs <= 18, "too many decimals");
one = 10**uint256(decs);
} else {
uint8 decs = ExpandedERC20(sell_token).decimals();
require(decs <= 18, "too many decimals");
one = 10**uint256(decs);
}
if (priceAverageSell > uint192(-1)) {
// eat loss of precision
// effectively: (x / 2**112) * 1e18
purchasePrice = (priceAverageSell >> 112) * one;
} else {
// cant overflow
// effectively: (x * 1e18 / 2**112)
purchasePrice = (priceAverageSell * one) >> 112;
}
if (purchaseTokenIs0) {
uint8 decs = ExpandedERC20(IUniswapV2Pair(uniswap_pair2).token1()).decimals();
require(decs <= 18, "too many decimals");
one = 10**uint256(decs);
} else {
uint8 decs = ExpandedERC20(IUniswapV2Pair(uniswap_pair2).token0()).decimals();
require(decs <= 18, "too many decimals");
one = 10**uint256(decs);
}
if (priceAverageBuy > uint192(-1)) {
salePrice = (priceAverageBuy >> 112) * one;
} else {
salePrice = (priceAverageBuy * one) >> 112;
}
return purchasePrice.mul(salePrice).div(one);
} else {
uint256 one;
if (saleTokenIs0) {
uint8 decs = ExpandedERC20(sell_token).decimals();
require(decs <= 18, "too many decimals");
one = 10**uint256(decs);
} else {
uint8 decs = ExpandedERC20(sell_token).decimals();
require(decs <= 18, "too many decimals");
one = 10**uint256(decs);
}
// single hop
uint256 purchasePrice;
if (priceAverageSell > uint192(-1)) {
// eat loss of precision
// effectively: (x / 2**112) * 1e18
purchasePrice = (priceAverageSell >> 112) * one;
} else {
// cant overflow
// effectively: (x * 1e18 / 2**112)
purchasePrice = (priceAverageSell * one) >> 112;
}
return purchasePrice;
}
}
function recencyCheck()
internal
returns (bool)
{
return (block.timestamp - blockTimestampLast < grace) && (twap_counter > 0);
}
} | update_twap | function update_twap()
public
{
(uint256 sell_token_priceCumulative, uint32 blockTimestamp) =
UniswapV2OracleLibrary.currentCumulativePrices(uniswap_pair1, saleTokenIs0);
uint32 timeElapsed = blockTimestamp - blockTimestampLast; // overflow is desired
// ensure that at least one full period has passed since the last update
require(timeElapsed >= period, 'OTC: PERIOD_NOT_ELAPSED');
// overflow is desired
priceAverageSell = uint256(uint224((sell_token_priceCumulative - priceCumulativeLastSell) / timeElapsed));
priceCumulativeLastSell = sell_token_priceCumulative;
if (uniswap_pair2 != address(0)) {
// two hop
(uint256 buy_token_priceCumulative, ) =
UniswapV2OracleLibrary.currentCumulativePrices(uniswap_pair2, !purchaseTokenIs0);
priceAverageBuy = uint256(uint224((buy_token_priceCumulative - priceCumulativeLastBuy) / timeElapsed));
priceCumulativeLastBuy = buy_token_priceCumulative;
}
twap_counter = twap_counter.add(1);
blockTimestampLast = blockTimestamp;
}
| // callable by anyone | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
5123,
6310
]
} | 3,969 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | IndexStaking2 | contract IndexStaking2 is ReserveUniHelper {
constructor(address pendingGov_, address reserves_) public {
gov = msg.sender;
pendingGov = pendingGov_;
reserves = reserves_;
IERC20(lp).approve(address(staking), uint256(-1));
}
IndexStaker public staking = IndexStaker(0xB93b505Ed567982E2b6756177ddD23ab5745f309);
address public lp = address(0x4d5ef58aAc27d99935E5b6B4A6778ff292059991);
function currentStake()
public
view
returns (uint256)
{
return staking.balanceOf(address(this));
}
// callable by anyone assuming twap bounds checks
function stake()
public
{
_getLPToken();
uint256 amount = IERC20(lp).balanceOf(address(this));
staking.stake(amount);
}
// callable by anyone assuming twap bounds checks
function getUnderlying()
public
{
_getUnderlyingToken(true);
}
// ========= STAKING ========
function _stakeCurrentLPBalance()
public
onlyGovOrSubGov
{
uint256 amount = IERC20(lp).balanceOf(address(this));
staking.stake(amount);
}
function _approveStakingFromReserves(
bool isToken0Limited,
uint256 amount
)
public
onlyGovOrSubGov
{
if (isToken0Limited) {
setup_twap_bound(
IUniswapV2Pair(lp).token0(), // The limiting asset
IUniswapV2Pair(lp).token1(),
amount, // amount of token0
true, // is sale
60 * 60, // 1 hour
5 * 10**15, // .5%
lp,
address(0), // if two hop
60 * 60 // length after twap update that it can occur
);
} else {
setup_twap_bound(
IUniswapV2Pair(lp).token1(), // The limiting asset
IUniswapV2Pair(lp).token0(),
amount, // amount of token1
true, // is sale
60 * 60, // 1 hour
5 * 10**15, // .5%
lp,
address(0), // if two hop
60 * 60 // length after twap update that it can occur
);
}
}
// ============================
// ========= EXITING ==========
function _exitStaking()
public
onlyGovOrSubGov
{
staking.exit();
}
function _exitAndApproveGetUnderlying()
public
onlyGovOrSubGov
{
staking.exit();
setup_twap_bound(
IUniswapV2Pair(lp).token0(), // doesnt really matter
IUniswapV2Pair(lp).token1(), // doesnt really matter
staking.balanceOf(address(this)), // amount of LP tokens
true, // is sale
60 * 60, // 1 hour
5 * 10**15, // .5%
lp,
address(0), // if two hop
60 * 60 // length after twap update that it can occur
);
}
function _exitStakingEmergency()
public
onlyGovOrSubGov
{
staking.withdraw(staking.balanceOf(address(this)));
}
function _exitStakingEmergencyAndApproveGetUnderlying()
public
onlyGovOrSubGov
{
staking.withdraw(staking.balanceOf(address(this)));
setup_twap_bound(
IUniswapV2Pair(lp).token0(), // doesnt really matter
IUniswapV2Pair(lp).token1(), // doesnt really matter
staking.balanceOf(address(this)), // amount of LP tokens
true, // is sale
60 * 60, // 1 hour
5 * 10**15, // .5%
lp,
address(0), // if two hop
60 * 60 // length after twap update that it can occur
);
}
// ============================
function _getTokenFromHere(address token)
public
onlyGovOrSubGov
{
IERC20 t = IERC20(token);
t.transfer(reserves, t.balanceOf(address(this)));
}
} | stake | function stake()
public
{
_getLPToken();
uint256 amount = IERC20(lp).balanceOf(address(this));
staking.stake(amount);
}
| // callable by anyone assuming twap bounds checks | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
656,
826
]
} | 3,970 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | IndexStaking2 | contract IndexStaking2 is ReserveUniHelper {
constructor(address pendingGov_, address reserves_) public {
gov = msg.sender;
pendingGov = pendingGov_;
reserves = reserves_;
IERC20(lp).approve(address(staking), uint256(-1));
}
IndexStaker public staking = IndexStaker(0xB93b505Ed567982E2b6756177ddD23ab5745f309);
address public lp = address(0x4d5ef58aAc27d99935E5b6B4A6778ff292059991);
function currentStake()
public
view
returns (uint256)
{
return staking.balanceOf(address(this));
}
// callable by anyone assuming twap bounds checks
function stake()
public
{
_getLPToken();
uint256 amount = IERC20(lp).balanceOf(address(this));
staking.stake(amount);
}
// callable by anyone assuming twap bounds checks
function getUnderlying()
public
{
_getUnderlyingToken(true);
}
// ========= STAKING ========
function _stakeCurrentLPBalance()
public
onlyGovOrSubGov
{
uint256 amount = IERC20(lp).balanceOf(address(this));
staking.stake(amount);
}
function _approveStakingFromReserves(
bool isToken0Limited,
uint256 amount
)
public
onlyGovOrSubGov
{
if (isToken0Limited) {
setup_twap_bound(
IUniswapV2Pair(lp).token0(), // The limiting asset
IUniswapV2Pair(lp).token1(),
amount, // amount of token0
true, // is sale
60 * 60, // 1 hour
5 * 10**15, // .5%
lp,
address(0), // if two hop
60 * 60 // length after twap update that it can occur
);
} else {
setup_twap_bound(
IUniswapV2Pair(lp).token1(), // The limiting asset
IUniswapV2Pair(lp).token0(),
amount, // amount of token1
true, // is sale
60 * 60, // 1 hour
5 * 10**15, // .5%
lp,
address(0), // if two hop
60 * 60 // length after twap update that it can occur
);
}
}
// ============================
// ========= EXITING ==========
function _exitStaking()
public
onlyGovOrSubGov
{
staking.exit();
}
function _exitAndApproveGetUnderlying()
public
onlyGovOrSubGov
{
staking.exit();
setup_twap_bound(
IUniswapV2Pair(lp).token0(), // doesnt really matter
IUniswapV2Pair(lp).token1(), // doesnt really matter
staking.balanceOf(address(this)), // amount of LP tokens
true, // is sale
60 * 60, // 1 hour
5 * 10**15, // .5%
lp,
address(0), // if two hop
60 * 60 // length after twap update that it can occur
);
}
function _exitStakingEmergency()
public
onlyGovOrSubGov
{
staking.withdraw(staking.balanceOf(address(this)));
}
function _exitStakingEmergencyAndApproveGetUnderlying()
public
onlyGovOrSubGov
{
staking.withdraw(staking.balanceOf(address(this)));
setup_twap_bound(
IUniswapV2Pair(lp).token0(), // doesnt really matter
IUniswapV2Pair(lp).token1(), // doesnt really matter
staking.balanceOf(address(this)), // amount of LP tokens
true, // is sale
60 * 60, // 1 hour
5 * 10**15, // .5%
lp,
address(0), // if two hop
60 * 60 // length after twap update that it can occur
);
}
// ============================
function _getTokenFromHere(address token)
public
onlyGovOrSubGov
{
IERC20 t = IERC20(token);
t.transfer(reserves, t.balanceOf(address(this)));
}
} | getUnderlying | function getUnderlying()
public
{
_getUnderlyingToken(true);
}
| // callable by anyone assuming twap bounds checks | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
884,
979
]
} | 3,971 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | IndexStaking2 | contract IndexStaking2 is ReserveUniHelper {
constructor(address pendingGov_, address reserves_) public {
gov = msg.sender;
pendingGov = pendingGov_;
reserves = reserves_;
IERC20(lp).approve(address(staking), uint256(-1));
}
IndexStaker public staking = IndexStaker(0xB93b505Ed567982E2b6756177ddD23ab5745f309);
address public lp = address(0x4d5ef58aAc27d99935E5b6B4A6778ff292059991);
function currentStake()
public
view
returns (uint256)
{
return staking.balanceOf(address(this));
}
// callable by anyone assuming twap bounds checks
function stake()
public
{
_getLPToken();
uint256 amount = IERC20(lp).balanceOf(address(this));
staking.stake(amount);
}
// callable by anyone assuming twap bounds checks
function getUnderlying()
public
{
_getUnderlyingToken(true);
}
// ========= STAKING ========
function _stakeCurrentLPBalance()
public
onlyGovOrSubGov
{
uint256 amount = IERC20(lp).balanceOf(address(this));
staking.stake(amount);
}
function _approveStakingFromReserves(
bool isToken0Limited,
uint256 amount
)
public
onlyGovOrSubGov
{
if (isToken0Limited) {
setup_twap_bound(
IUniswapV2Pair(lp).token0(), // The limiting asset
IUniswapV2Pair(lp).token1(),
amount, // amount of token0
true, // is sale
60 * 60, // 1 hour
5 * 10**15, // .5%
lp,
address(0), // if two hop
60 * 60 // length after twap update that it can occur
);
} else {
setup_twap_bound(
IUniswapV2Pair(lp).token1(), // The limiting asset
IUniswapV2Pair(lp).token0(),
amount, // amount of token1
true, // is sale
60 * 60, // 1 hour
5 * 10**15, // .5%
lp,
address(0), // if two hop
60 * 60 // length after twap update that it can occur
);
}
}
// ============================
// ========= EXITING ==========
function _exitStaking()
public
onlyGovOrSubGov
{
staking.exit();
}
function _exitAndApproveGetUnderlying()
public
onlyGovOrSubGov
{
staking.exit();
setup_twap_bound(
IUniswapV2Pair(lp).token0(), // doesnt really matter
IUniswapV2Pair(lp).token1(), // doesnt really matter
staking.balanceOf(address(this)), // amount of LP tokens
true, // is sale
60 * 60, // 1 hour
5 * 10**15, // .5%
lp,
address(0), // if two hop
60 * 60 // length after twap update that it can occur
);
}
function _exitStakingEmergency()
public
onlyGovOrSubGov
{
staking.withdraw(staking.balanceOf(address(this)));
}
function _exitStakingEmergencyAndApproveGetUnderlying()
public
onlyGovOrSubGov
{
staking.withdraw(staking.balanceOf(address(this)));
setup_twap_bound(
IUniswapV2Pair(lp).token0(), // doesnt really matter
IUniswapV2Pair(lp).token1(), // doesnt really matter
staking.balanceOf(address(this)), // amount of LP tokens
true, // is sale
60 * 60, // 1 hour
5 * 10**15, // .5%
lp,
address(0), // if two hop
60 * 60 // length after twap update that it can occur
);
}
// ============================
function _getTokenFromHere(address token)
public
onlyGovOrSubGov
{
IERC20 t = IERC20(token);
t.transfer(reserves, t.balanceOf(address(this)));
}
} | _stakeCurrentLPBalance | function _stakeCurrentLPBalance()
public
onlyGovOrSubGov
{
uint256 amount = IERC20(lp).balanceOf(address(this));
staking.stake(amount);
}
| // ========= STAKING ======== | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
1017,
1205
]
} | 3,972 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | IndexStaking2 | contract IndexStaking2 is ReserveUniHelper {
constructor(address pendingGov_, address reserves_) public {
gov = msg.sender;
pendingGov = pendingGov_;
reserves = reserves_;
IERC20(lp).approve(address(staking), uint256(-1));
}
IndexStaker public staking = IndexStaker(0xB93b505Ed567982E2b6756177ddD23ab5745f309);
address public lp = address(0x4d5ef58aAc27d99935E5b6B4A6778ff292059991);
function currentStake()
public
view
returns (uint256)
{
return staking.balanceOf(address(this));
}
// callable by anyone assuming twap bounds checks
function stake()
public
{
_getLPToken();
uint256 amount = IERC20(lp).balanceOf(address(this));
staking.stake(amount);
}
// callable by anyone assuming twap bounds checks
function getUnderlying()
public
{
_getUnderlyingToken(true);
}
// ========= STAKING ========
function _stakeCurrentLPBalance()
public
onlyGovOrSubGov
{
uint256 amount = IERC20(lp).balanceOf(address(this));
staking.stake(amount);
}
function _approveStakingFromReserves(
bool isToken0Limited,
uint256 amount
)
public
onlyGovOrSubGov
{
if (isToken0Limited) {
setup_twap_bound(
IUniswapV2Pair(lp).token0(), // The limiting asset
IUniswapV2Pair(lp).token1(),
amount, // amount of token0
true, // is sale
60 * 60, // 1 hour
5 * 10**15, // .5%
lp,
address(0), // if two hop
60 * 60 // length after twap update that it can occur
);
} else {
setup_twap_bound(
IUniswapV2Pair(lp).token1(), // The limiting asset
IUniswapV2Pair(lp).token0(),
amount, // amount of token1
true, // is sale
60 * 60, // 1 hour
5 * 10**15, // .5%
lp,
address(0), // if two hop
60 * 60 // length after twap update that it can occur
);
}
}
// ============================
// ========= EXITING ==========
function _exitStaking()
public
onlyGovOrSubGov
{
staking.exit();
}
function _exitAndApproveGetUnderlying()
public
onlyGovOrSubGov
{
staking.exit();
setup_twap_bound(
IUniswapV2Pair(lp).token0(), // doesnt really matter
IUniswapV2Pair(lp).token1(), // doesnt really matter
staking.balanceOf(address(this)), // amount of LP tokens
true, // is sale
60 * 60, // 1 hour
5 * 10**15, // .5%
lp,
address(0), // if two hop
60 * 60 // length after twap update that it can occur
);
}
function _exitStakingEmergency()
public
onlyGovOrSubGov
{
staking.withdraw(staking.balanceOf(address(this)));
}
function _exitStakingEmergencyAndApproveGetUnderlying()
public
onlyGovOrSubGov
{
staking.withdraw(staking.balanceOf(address(this)));
setup_twap_bound(
IUniswapV2Pair(lp).token0(), // doesnt really matter
IUniswapV2Pair(lp).token1(), // doesnt really matter
staking.balanceOf(address(this)), // amount of LP tokens
true, // is sale
60 * 60, // 1 hour
5 * 10**15, // .5%
lp,
address(0), // if two hop
60 * 60 // length after twap update that it can occur
);
}
// ============================
function _getTokenFromHere(address token)
public
onlyGovOrSubGov
{
IERC20 t = IERC20(token);
t.transfer(reserves, t.balanceOf(address(this)));
}
} | _exitStaking | function _exitStaking()
public
onlyGovOrSubGov
{
staking.exit();
}
| // ============================
// ========= EXITING ========== | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
2355,
2463
]
} | 3,973 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | IndexStaking2 | contract IndexStaking2 is ReserveUniHelper {
constructor(address pendingGov_, address reserves_) public {
gov = msg.sender;
pendingGov = pendingGov_;
reserves = reserves_;
IERC20(lp).approve(address(staking), uint256(-1));
}
IndexStaker public staking = IndexStaker(0xB93b505Ed567982E2b6756177ddD23ab5745f309);
address public lp = address(0x4d5ef58aAc27d99935E5b6B4A6778ff292059991);
function currentStake()
public
view
returns (uint256)
{
return staking.balanceOf(address(this));
}
// callable by anyone assuming twap bounds checks
function stake()
public
{
_getLPToken();
uint256 amount = IERC20(lp).balanceOf(address(this));
staking.stake(amount);
}
// callable by anyone assuming twap bounds checks
function getUnderlying()
public
{
_getUnderlyingToken(true);
}
// ========= STAKING ========
function _stakeCurrentLPBalance()
public
onlyGovOrSubGov
{
uint256 amount = IERC20(lp).balanceOf(address(this));
staking.stake(amount);
}
function _approveStakingFromReserves(
bool isToken0Limited,
uint256 amount
)
public
onlyGovOrSubGov
{
if (isToken0Limited) {
setup_twap_bound(
IUniswapV2Pair(lp).token0(), // The limiting asset
IUniswapV2Pair(lp).token1(),
amount, // amount of token0
true, // is sale
60 * 60, // 1 hour
5 * 10**15, // .5%
lp,
address(0), // if two hop
60 * 60 // length after twap update that it can occur
);
} else {
setup_twap_bound(
IUniswapV2Pair(lp).token1(), // The limiting asset
IUniswapV2Pair(lp).token0(),
amount, // amount of token1
true, // is sale
60 * 60, // 1 hour
5 * 10**15, // .5%
lp,
address(0), // if two hop
60 * 60 // length after twap update that it can occur
);
}
}
// ============================
// ========= EXITING ==========
function _exitStaking()
public
onlyGovOrSubGov
{
staking.exit();
}
function _exitAndApproveGetUnderlying()
public
onlyGovOrSubGov
{
staking.exit();
setup_twap_bound(
IUniswapV2Pair(lp).token0(), // doesnt really matter
IUniswapV2Pair(lp).token1(), // doesnt really matter
staking.balanceOf(address(this)), // amount of LP tokens
true, // is sale
60 * 60, // 1 hour
5 * 10**15, // .5%
lp,
address(0), // if two hop
60 * 60 // length after twap update that it can occur
);
}
function _exitStakingEmergency()
public
onlyGovOrSubGov
{
staking.withdraw(staking.balanceOf(address(this)));
}
function _exitStakingEmergencyAndApproveGetUnderlying()
public
onlyGovOrSubGov
{
staking.withdraw(staking.balanceOf(address(this)));
setup_twap_bound(
IUniswapV2Pair(lp).token0(), // doesnt really matter
IUniswapV2Pair(lp).token1(), // doesnt really matter
staking.balanceOf(address(this)), // amount of LP tokens
true, // is sale
60 * 60, // 1 hour
5 * 10**15, // .5%
lp,
address(0), // if two hop
60 * 60 // length after twap update that it can occur
);
}
// ============================
function _getTokenFromHere(address token)
public
onlyGovOrSubGov
{
IERC20 t = IERC20(token);
t.transfer(reserves, t.balanceOf(address(this)));
}
} | _getTokenFromHere | function _getTokenFromHere(address token)
public
onlyGovOrSubGov
{
IERC20 t = IERC20(token);
t.transfer(reserves, t.balanceOf(address(this)));
}
| // ============================ | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
3883,
4078
]
} | 3,974 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | UniswapV2Library | library UniswapV2Library {
using SafeMath for uint;
// returns sorted token addresses, used to handle return values from pairs sorted in this order
function sortTokens(address tokenA, address tokenB) internal pure returns (address token0, address token1) {
require(tokenA != tokenB, 'UniswapV2Library: IDENTICAL_ADDRESSES');
(token0, token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
require(token0 != address(0), 'UniswapV2Library: ZERO_ADDRESS');
}
// calculates the CREATE2 address for a pair without making any external calls
function pairFor(address factory, address tokenA, address tokenB) internal pure returns (address pair) {
(address token0, address token1) = sortTokens(tokenA, tokenB);
pair = address(uint(keccak256(abi.encodePacked(
hex'ff',
factory,
keccak256(abi.encodePacked(token0, token1)),
hex'96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f' // init code hash
))));
}
// fetches and sorts the reserves for a pair
function getReserves(address factory, address tokenA, address tokenB) internal view returns (uint reserveA, uint reserveB) {
(address token0,) = sortTokens(tokenA, tokenB);
(uint reserve0, uint reserve1,) = IUniswapV2Pair(pairFor(factory, tokenA, tokenB)).getReserves();
(reserveA, reserveB) = tokenA == token0 ? (reserve0, reserve1) : (reserve1, reserve0);
}
// given some amount of an asset and pair reserves, returns an equivalent amount of the other asset
function quote(uint amountA, uint reserveA, uint reserveB) internal pure returns (uint amountB) {
require(amountA > 0, 'UniswapV2Library: INSUFFICIENT_AMOUNT');
require(reserveA > 0 && reserveB > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
amountB = amountA.mul(reserveB) / reserveA;
}
// given an input amount of an asset and pair reserves, returns the maximum output amount of the other asset
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) internal pure returns (uint amountOut) {
require(amountIn > 0, 'UniswapV2Library: INSUFFICIENT_INPUT_AMOUNT');
require(reserveIn > 0 && reserveOut > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
uint amountInWithFee = amountIn.mul(997);
uint numerator = amountInWithFee.mul(reserveOut);
uint denominator = reserveIn.mul(1000).add(amountInWithFee);
amountOut = numerator / denominator;
}
// given an output amount of an asset and pair reserves, returns a required input amount of the other asset
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) internal pure returns (uint amountIn) {
require(amountOut > 0, 'UniswapV2Library: INSUFFICIENT_OUTPUT_AMOUNT');
require(reserveIn > 0 && reserveOut > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
uint numerator = reserveIn.mul(amountOut).mul(1000);
uint denominator = reserveOut.sub(amountOut).mul(997);
amountIn = (numerator / denominator).add(1);
}
// performs chained getAmountOut calculations on any number of pairs
function getAmountsOut(address factory, uint amountIn, address[] memory path) internal view returns (uint[] memory amounts) {
require(path.length >= 2, 'UniswapV2Library: INVALID_PATH');
amounts = new uint[](path.length);
amounts[0] = amountIn;
for (uint i; i < path.length - 1; i++) {
(uint reserveIn, uint reserveOut) = getReserves(factory, path[i], path[i + 1]);
amounts[i + 1] = getAmountOut(amounts[i], reserveIn, reserveOut);
}
}
// performs chained getAmountIn calculations on any number of pairs
function getAmountsIn(address factory, uint amountOut, address[] memory path) internal view returns (uint[] memory amounts) {
require(path.length >= 2, 'UniswapV2Library: INVALID_PATH');
amounts = new uint[](path.length);
amounts[amounts.length - 1] = amountOut;
for (uint i = path.length - 1; i > 0; i--) {
(uint reserveIn, uint reserveOut) = getReserves(factory, path[i - 1], path[i]);
amounts[i - 1] = getAmountIn(amounts[i], reserveIn, reserveOut);
}
}
} | sortTokens | function sortTokens(address tokenA, address tokenB) internal pure returns (address token0, address token1) {
require(tokenA != tokenB, 'UniswapV2Library: IDENTICAL_ADDRESSES');
(token0, token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
require(token0 != address(0), 'UniswapV2Library: ZERO_ADDRESS');
}
| // returns sorted token addresses, used to handle return values from pairs sorted in this order | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
161,
515
]
} | 3,975 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | UniswapV2Library | library UniswapV2Library {
using SafeMath for uint;
// returns sorted token addresses, used to handle return values from pairs sorted in this order
function sortTokens(address tokenA, address tokenB) internal pure returns (address token0, address token1) {
require(tokenA != tokenB, 'UniswapV2Library: IDENTICAL_ADDRESSES');
(token0, token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
require(token0 != address(0), 'UniswapV2Library: ZERO_ADDRESS');
}
// calculates the CREATE2 address for a pair without making any external calls
function pairFor(address factory, address tokenA, address tokenB) internal pure returns (address pair) {
(address token0, address token1) = sortTokens(tokenA, tokenB);
pair = address(uint(keccak256(abi.encodePacked(
hex'ff',
factory,
keccak256(abi.encodePacked(token0, token1)),
hex'96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f' // init code hash
))));
}
// fetches and sorts the reserves for a pair
function getReserves(address factory, address tokenA, address tokenB) internal view returns (uint reserveA, uint reserveB) {
(address token0,) = sortTokens(tokenA, tokenB);
(uint reserve0, uint reserve1,) = IUniswapV2Pair(pairFor(factory, tokenA, tokenB)).getReserves();
(reserveA, reserveB) = tokenA == token0 ? (reserve0, reserve1) : (reserve1, reserve0);
}
// given some amount of an asset and pair reserves, returns an equivalent amount of the other asset
function quote(uint amountA, uint reserveA, uint reserveB) internal pure returns (uint amountB) {
require(amountA > 0, 'UniswapV2Library: INSUFFICIENT_AMOUNT');
require(reserveA > 0 && reserveB > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
amountB = amountA.mul(reserveB) / reserveA;
}
// given an input amount of an asset and pair reserves, returns the maximum output amount of the other asset
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) internal pure returns (uint amountOut) {
require(amountIn > 0, 'UniswapV2Library: INSUFFICIENT_INPUT_AMOUNT');
require(reserveIn > 0 && reserveOut > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
uint amountInWithFee = amountIn.mul(997);
uint numerator = amountInWithFee.mul(reserveOut);
uint denominator = reserveIn.mul(1000).add(amountInWithFee);
amountOut = numerator / denominator;
}
// given an output amount of an asset and pair reserves, returns a required input amount of the other asset
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) internal pure returns (uint amountIn) {
require(amountOut > 0, 'UniswapV2Library: INSUFFICIENT_OUTPUT_AMOUNT');
require(reserveIn > 0 && reserveOut > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
uint numerator = reserveIn.mul(amountOut).mul(1000);
uint denominator = reserveOut.sub(amountOut).mul(997);
amountIn = (numerator / denominator).add(1);
}
// performs chained getAmountOut calculations on any number of pairs
function getAmountsOut(address factory, uint amountIn, address[] memory path) internal view returns (uint[] memory amounts) {
require(path.length >= 2, 'UniswapV2Library: INVALID_PATH');
amounts = new uint[](path.length);
amounts[0] = amountIn;
for (uint i; i < path.length - 1; i++) {
(uint reserveIn, uint reserveOut) = getReserves(factory, path[i], path[i + 1]);
amounts[i + 1] = getAmountOut(amounts[i], reserveIn, reserveOut);
}
}
// performs chained getAmountIn calculations on any number of pairs
function getAmountsIn(address factory, uint amountOut, address[] memory path) internal view returns (uint[] memory amounts) {
require(path.length >= 2, 'UniswapV2Library: INVALID_PATH');
amounts = new uint[](path.length);
amounts[amounts.length - 1] = amountOut;
for (uint i = path.length - 1; i > 0; i--) {
(uint reserveIn, uint reserveOut) = getReserves(factory, path[i - 1], path[i]);
amounts[i - 1] = getAmountIn(amounts[i], reserveIn, reserveOut);
}
}
} | pairFor | function pairFor(address factory, address tokenA, address tokenB) internal pure returns (address pair) {
(address token0, address token1) = sortTokens(tokenA, tokenB);
pair = address(uint(keccak256(abi.encodePacked(
hex'ff',
factory,
keccak256(abi.encodePacked(token0, token1)),
hex'96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f' // init code hash
))));
}
| // calculates the CREATE2 address for a pair without making any external calls | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
602,
1085
]
} | 3,976 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | UniswapV2Library | library UniswapV2Library {
using SafeMath for uint;
// returns sorted token addresses, used to handle return values from pairs sorted in this order
function sortTokens(address tokenA, address tokenB) internal pure returns (address token0, address token1) {
require(tokenA != tokenB, 'UniswapV2Library: IDENTICAL_ADDRESSES');
(token0, token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
require(token0 != address(0), 'UniswapV2Library: ZERO_ADDRESS');
}
// calculates the CREATE2 address for a pair without making any external calls
function pairFor(address factory, address tokenA, address tokenB) internal pure returns (address pair) {
(address token0, address token1) = sortTokens(tokenA, tokenB);
pair = address(uint(keccak256(abi.encodePacked(
hex'ff',
factory,
keccak256(abi.encodePacked(token0, token1)),
hex'96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f' // init code hash
))));
}
// fetches and sorts the reserves for a pair
function getReserves(address factory, address tokenA, address tokenB) internal view returns (uint reserveA, uint reserveB) {
(address token0,) = sortTokens(tokenA, tokenB);
(uint reserve0, uint reserve1,) = IUniswapV2Pair(pairFor(factory, tokenA, tokenB)).getReserves();
(reserveA, reserveB) = tokenA == token0 ? (reserve0, reserve1) : (reserve1, reserve0);
}
// given some amount of an asset and pair reserves, returns an equivalent amount of the other asset
function quote(uint amountA, uint reserveA, uint reserveB) internal pure returns (uint amountB) {
require(amountA > 0, 'UniswapV2Library: INSUFFICIENT_AMOUNT');
require(reserveA > 0 && reserveB > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
amountB = amountA.mul(reserveB) / reserveA;
}
// given an input amount of an asset and pair reserves, returns the maximum output amount of the other asset
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) internal pure returns (uint amountOut) {
require(amountIn > 0, 'UniswapV2Library: INSUFFICIENT_INPUT_AMOUNT');
require(reserveIn > 0 && reserveOut > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
uint amountInWithFee = amountIn.mul(997);
uint numerator = amountInWithFee.mul(reserveOut);
uint denominator = reserveIn.mul(1000).add(amountInWithFee);
amountOut = numerator / denominator;
}
// given an output amount of an asset and pair reserves, returns a required input amount of the other asset
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) internal pure returns (uint amountIn) {
require(amountOut > 0, 'UniswapV2Library: INSUFFICIENT_OUTPUT_AMOUNT');
require(reserveIn > 0 && reserveOut > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
uint numerator = reserveIn.mul(amountOut).mul(1000);
uint denominator = reserveOut.sub(amountOut).mul(997);
amountIn = (numerator / denominator).add(1);
}
// performs chained getAmountOut calculations on any number of pairs
function getAmountsOut(address factory, uint amountIn, address[] memory path) internal view returns (uint[] memory amounts) {
require(path.length >= 2, 'UniswapV2Library: INVALID_PATH');
amounts = new uint[](path.length);
amounts[0] = amountIn;
for (uint i; i < path.length - 1; i++) {
(uint reserveIn, uint reserveOut) = getReserves(factory, path[i], path[i + 1]);
amounts[i + 1] = getAmountOut(amounts[i], reserveIn, reserveOut);
}
}
// performs chained getAmountIn calculations on any number of pairs
function getAmountsIn(address factory, uint amountOut, address[] memory path) internal view returns (uint[] memory amounts) {
require(path.length >= 2, 'UniswapV2Library: INVALID_PATH');
amounts = new uint[](path.length);
amounts[amounts.length - 1] = amountOut;
for (uint i = path.length - 1; i > 0; i--) {
(uint reserveIn, uint reserveOut) = getReserves(factory, path[i - 1], path[i]);
amounts[i - 1] = getAmountIn(amounts[i], reserveIn, reserveOut);
}
}
} | getReserves | function getReserves(address factory, address tokenA, address tokenB) internal view returns (uint reserveA, uint reserveB) {
(address token0,) = sortTokens(tokenA, tokenB);
(uint reserve0, uint reserve1,) = IUniswapV2Pair(pairFor(factory, tokenA, tokenB)).getReserves();
(reserveA, reserveB) = tokenA == token0 ? (reserve0, reserve1) : (reserve1, reserve0);
}
| // fetches and sorts the reserves for a pair | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
1138,
1534
]
} | 3,977 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | UniswapV2Library | library UniswapV2Library {
using SafeMath for uint;
// returns sorted token addresses, used to handle return values from pairs sorted in this order
function sortTokens(address tokenA, address tokenB) internal pure returns (address token0, address token1) {
require(tokenA != tokenB, 'UniswapV2Library: IDENTICAL_ADDRESSES');
(token0, token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
require(token0 != address(0), 'UniswapV2Library: ZERO_ADDRESS');
}
// calculates the CREATE2 address for a pair without making any external calls
function pairFor(address factory, address tokenA, address tokenB) internal pure returns (address pair) {
(address token0, address token1) = sortTokens(tokenA, tokenB);
pair = address(uint(keccak256(abi.encodePacked(
hex'ff',
factory,
keccak256(abi.encodePacked(token0, token1)),
hex'96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f' // init code hash
))));
}
// fetches and sorts the reserves for a pair
function getReserves(address factory, address tokenA, address tokenB) internal view returns (uint reserveA, uint reserveB) {
(address token0,) = sortTokens(tokenA, tokenB);
(uint reserve0, uint reserve1,) = IUniswapV2Pair(pairFor(factory, tokenA, tokenB)).getReserves();
(reserveA, reserveB) = tokenA == token0 ? (reserve0, reserve1) : (reserve1, reserve0);
}
// given some amount of an asset and pair reserves, returns an equivalent amount of the other asset
function quote(uint amountA, uint reserveA, uint reserveB) internal pure returns (uint amountB) {
require(amountA > 0, 'UniswapV2Library: INSUFFICIENT_AMOUNT');
require(reserveA > 0 && reserveB > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
amountB = amountA.mul(reserveB) / reserveA;
}
// given an input amount of an asset and pair reserves, returns the maximum output amount of the other asset
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) internal pure returns (uint amountOut) {
require(amountIn > 0, 'UniswapV2Library: INSUFFICIENT_INPUT_AMOUNT');
require(reserveIn > 0 && reserveOut > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
uint amountInWithFee = amountIn.mul(997);
uint numerator = amountInWithFee.mul(reserveOut);
uint denominator = reserveIn.mul(1000).add(amountInWithFee);
amountOut = numerator / denominator;
}
// given an output amount of an asset and pair reserves, returns a required input amount of the other asset
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) internal pure returns (uint amountIn) {
require(amountOut > 0, 'UniswapV2Library: INSUFFICIENT_OUTPUT_AMOUNT');
require(reserveIn > 0 && reserveOut > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
uint numerator = reserveIn.mul(amountOut).mul(1000);
uint denominator = reserveOut.sub(amountOut).mul(997);
amountIn = (numerator / denominator).add(1);
}
// performs chained getAmountOut calculations on any number of pairs
function getAmountsOut(address factory, uint amountIn, address[] memory path) internal view returns (uint[] memory amounts) {
require(path.length >= 2, 'UniswapV2Library: INVALID_PATH');
amounts = new uint[](path.length);
amounts[0] = amountIn;
for (uint i; i < path.length - 1; i++) {
(uint reserveIn, uint reserveOut) = getReserves(factory, path[i], path[i + 1]);
amounts[i + 1] = getAmountOut(amounts[i], reserveIn, reserveOut);
}
}
// performs chained getAmountIn calculations on any number of pairs
function getAmountsIn(address factory, uint amountOut, address[] memory path) internal view returns (uint[] memory amounts) {
require(path.length >= 2, 'UniswapV2Library: INVALID_PATH');
amounts = new uint[](path.length);
amounts[amounts.length - 1] = amountOut;
for (uint i = path.length - 1; i > 0; i--) {
(uint reserveIn, uint reserveOut) = getReserves(factory, path[i - 1], path[i]);
amounts[i - 1] = getAmountIn(amounts[i], reserveIn, reserveOut);
}
}
} | quote | function quote(uint amountA, uint reserveA, uint reserveB) internal pure returns (uint amountB) {
require(amountA > 0, 'UniswapV2Library: INSUFFICIENT_AMOUNT');
require(reserveA > 0 && reserveB > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
amountB = amountA.mul(reserveB) / reserveA;
}
| // given some amount of an asset and pair reserves, returns an equivalent amount of the other asset | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
1642,
1968
]
} | 3,978 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | UniswapV2Library | library UniswapV2Library {
using SafeMath for uint;
// returns sorted token addresses, used to handle return values from pairs sorted in this order
function sortTokens(address tokenA, address tokenB) internal pure returns (address token0, address token1) {
require(tokenA != tokenB, 'UniswapV2Library: IDENTICAL_ADDRESSES');
(token0, token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
require(token0 != address(0), 'UniswapV2Library: ZERO_ADDRESS');
}
// calculates the CREATE2 address for a pair without making any external calls
function pairFor(address factory, address tokenA, address tokenB) internal pure returns (address pair) {
(address token0, address token1) = sortTokens(tokenA, tokenB);
pair = address(uint(keccak256(abi.encodePacked(
hex'ff',
factory,
keccak256(abi.encodePacked(token0, token1)),
hex'96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f' // init code hash
))));
}
// fetches and sorts the reserves for a pair
function getReserves(address factory, address tokenA, address tokenB) internal view returns (uint reserveA, uint reserveB) {
(address token0,) = sortTokens(tokenA, tokenB);
(uint reserve0, uint reserve1,) = IUniswapV2Pair(pairFor(factory, tokenA, tokenB)).getReserves();
(reserveA, reserveB) = tokenA == token0 ? (reserve0, reserve1) : (reserve1, reserve0);
}
// given some amount of an asset and pair reserves, returns an equivalent amount of the other asset
function quote(uint amountA, uint reserveA, uint reserveB) internal pure returns (uint amountB) {
require(amountA > 0, 'UniswapV2Library: INSUFFICIENT_AMOUNT');
require(reserveA > 0 && reserveB > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
amountB = amountA.mul(reserveB) / reserveA;
}
// given an input amount of an asset and pair reserves, returns the maximum output amount of the other asset
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) internal pure returns (uint amountOut) {
require(amountIn > 0, 'UniswapV2Library: INSUFFICIENT_INPUT_AMOUNT');
require(reserveIn > 0 && reserveOut > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
uint amountInWithFee = amountIn.mul(997);
uint numerator = amountInWithFee.mul(reserveOut);
uint denominator = reserveIn.mul(1000).add(amountInWithFee);
amountOut = numerator / denominator;
}
// given an output amount of an asset and pair reserves, returns a required input amount of the other asset
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) internal pure returns (uint amountIn) {
require(amountOut > 0, 'UniswapV2Library: INSUFFICIENT_OUTPUT_AMOUNT');
require(reserveIn > 0 && reserveOut > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
uint numerator = reserveIn.mul(amountOut).mul(1000);
uint denominator = reserveOut.sub(amountOut).mul(997);
amountIn = (numerator / denominator).add(1);
}
// performs chained getAmountOut calculations on any number of pairs
function getAmountsOut(address factory, uint amountIn, address[] memory path) internal view returns (uint[] memory amounts) {
require(path.length >= 2, 'UniswapV2Library: INVALID_PATH');
amounts = new uint[](path.length);
amounts[0] = amountIn;
for (uint i; i < path.length - 1; i++) {
(uint reserveIn, uint reserveOut) = getReserves(factory, path[i], path[i + 1]);
amounts[i + 1] = getAmountOut(amounts[i], reserveIn, reserveOut);
}
}
// performs chained getAmountIn calculations on any number of pairs
function getAmountsIn(address factory, uint amountOut, address[] memory path) internal view returns (uint[] memory amounts) {
require(path.length >= 2, 'UniswapV2Library: INVALID_PATH');
amounts = new uint[](path.length);
amounts[amounts.length - 1] = amountOut;
for (uint i = path.length - 1; i > 0; i--) {
(uint reserveIn, uint reserveOut) = getReserves(factory, path[i - 1], path[i]);
amounts[i - 1] = getAmountIn(amounts[i], reserveIn, reserveOut);
}
}
} | getAmountOut | function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) internal pure returns (uint amountOut) {
require(amountIn > 0, 'UniswapV2Library: INSUFFICIENT_INPUT_AMOUNT');
require(reserveIn > 0 && reserveOut > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
uint amountInWithFee = amountIn.mul(997);
uint numerator = amountInWithFee.mul(reserveOut);
uint denominator = reserveIn.mul(1000).add(amountInWithFee);
amountOut = numerator / denominator;
}
| // given an input amount of an asset and pair reserves, returns the maximum output amount of the other asset | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
2085,
2607
]
} | 3,979 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | UniswapV2Library | library UniswapV2Library {
using SafeMath for uint;
// returns sorted token addresses, used to handle return values from pairs sorted in this order
function sortTokens(address tokenA, address tokenB) internal pure returns (address token0, address token1) {
require(tokenA != tokenB, 'UniswapV2Library: IDENTICAL_ADDRESSES');
(token0, token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
require(token0 != address(0), 'UniswapV2Library: ZERO_ADDRESS');
}
// calculates the CREATE2 address for a pair without making any external calls
function pairFor(address factory, address tokenA, address tokenB) internal pure returns (address pair) {
(address token0, address token1) = sortTokens(tokenA, tokenB);
pair = address(uint(keccak256(abi.encodePacked(
hex'ff',
factory,
keccak256(abi.encodePacked(token0, token1)),
hex'96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f' // init code hash
))));
}
// fetches and sorts the reserves for a pair
function getReserves(address factory, address tokenA, address tokenB) internal view returns (uint reserveA, uint reserveB) {
(address token0,) = sortTokens(tokenA, tokenB);
(uint reserve0, uint reserve1,) = IUniswapV2Pair(pairFor(factory, tokenA, tokenB)).getReserves();
(reserveA, reserveB) = tokenA == token0 ? (reserve0, reserve1) : (reserve1, reserve0);
}
// given some amount of an asset and pair reserves, returns an equivalent amount of the other asset
function quote(uint amountA, uint reserveA, uint reserveB) internal pure returns (uint amountB) {
require(amountA > 0, 'UniswapV2Library: INSUFFICIENT_AMOUNT');
require(reserveA > 0 && reserveB > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
amountB = amountA.mul(reserveB) / reserveA;
}
// given an input amount of an asset and pair reserves, returns the maximum output amount of the other asset
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) internal pure returns (uint amountOut) {
require(amountIn > 0, 'UniswapV2Library: INSUFFICIENT_INPUT_AMOUNT');
require(reserveIn > 0 && reserveOut > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
uint amountInWithFee = amountIn.mul(997);
uint numerator = amountInWithFee.mul(reserveOut);
uint denominator = reserveIn.mul(1000).add(amountInWithFee);
amountOut = numerator / denominator;
}
// given an output amount of an asset and pair reserves, returns a required input amount of the other asset
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) internal pure returns (uint amountIn) {
require(amountOut > 0, 'UniswapV2Library: INSUFFICIENT_OUTPUT_AMOUNT');
require(reserveIn > 0 && reserveOut > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
uint numerator = reserveIn.mul(amountOut).mul(1000);
uint denominator = reserveOut.sub(amountOut).mul(997);
amountIn = (numerator / denominator).add(1);
}
// performs chained getAmountOut calculations on any number of pairs
function getAmountsOut(address factory, uint amountIn, address[] memory path) internal view returns (uint[] memory amounts) {
require(path.length >= 2, 'UniswapV2Library: INVALID_PATH');
amounts = new uint[](path.length);
amounts[0] = amountIn;
for (uint i; i < path.length - 1; i++) {
(uint reserveIn, uint reserveOut) = getReserves(factory, path[i], path[i + 1]);
amounts[i + 1] = getAmountOut(amounts[i], reserveIn, reserveOut);
}
}
// performs chained getAmountIn calculations on any number of pairs
function getAmountsIn(address factory, uint amountOut, address[] memory path) internal view returns (uint[] memory amounts) {
require(path.length >= 2, 'UniswapV2Library: INVALID_PATH');
amounts = new uint[](path.length);
amounts[amounts.length - 1] = amountOut;
for (uint i = path.length - 1; i > 0; i--) {
(uint reserveIn, uint reserveOut) = getReserves(factory, path[i - 1], path[i]);
amounts[i - 1] = getAmountIn(amounts[i], reserveIn, reserveOut);
}
}
} | getAmountIn | function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) internal pure returns (uint amountIn) {
require(amountOut > 0, 'UniswapV2Library: INSUFFICIENT_OUTPUT_AMOUNT');
require(reserveIn > 0 && reserveOut > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
uint numerator = reserveIn.mul(amountOut).mul(1000);
uint denominator = reserveOut.sub(amountOut).mul(997);
amountIn = (numerator / denominator).add(1);
}
| // given an output amount of an asset and pair reserves, returns a required input amount of the other asset | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
2723,
3200
]
} | 3,980 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | UniswapV2Library | library UniswapV2Library {
using SafeMath for uint;
// returns sorted token addresses, used to handle return values from pairs sorted in this order
function sortTokens(address tokenA, address tokenB) internal pure returns (address token0, address token1) {
require(tokenA != tokenB, 'UniswapV2Library: IDENTICAL_ADDRESSES');
(token0, token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
require(token0 != address(0), 'UniswapV2Library: ZERO_ADDRESS');
}
// calculates the CREATE2 address for a pair without making any external calls
function pairFor(address factory, address tokenA, address tokenB) internal pure returns (address pair) {
(address token0, address token1) = sortTokens(tokenA, tokenB);
pair = address(uint(keccak256(abi.encodePacked(
hex'ff',
factory,
keccak256(abi.encodePacked(token0, token1)),
hex'96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f' // init code hash
))));
}
// fetches and sorts the reserves for a pair
function getReserves(address factory, address tokenA, address tokenB) internal view returns (uint reserveA, uint reserveB) {
(address token0,) = sortTokens(tokenA, tokenB);
(uint reserve0, uint reserve1,) = IUniswapV2Pair(pairFor(factory, tokenA, tokenB)).getReserves();
(reserveA, reserveB) = tokenA == token0 ? (reserve0, reserve1) : (reserve1, reserve0);
}
// given some amount of an asset and pair reserves, returns an equivalent amount of the other asset
function quote(uint amountA, uint reserveA, uint reserveB) internal pure returns (uint amountB) {
require(amountA > 0, 'UniswapV2Library: INSUFFICIENT_AMOUNT');
require(reserveA > 0 && reserveB > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
amountB = amountA.mul(reserveB) / reserveA;
}
// given an input amount of an asset and pair reserves, returns the maximum output amount of the other asset
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) internal pure returns (uint amountOut) {
require(amountIn > 0, 'UniswapV2Library: INSUFFICIENT_INPUT_AMOUNT');
require(reserveIn > 0 && reserveOut > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
uint amountInWithFee = amountIn.mul(997);
uint numerator = amountInWithFee.mul(reserveOut);
uint denominator = reserveIn.mul(1000).add(amountInWithFee);
amountOut = numerator / denominator;
}
// given an output amount of an asset and pair reserves, returns a required input amount of the other asset
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) internal pure returns (uint amountIn) {
require(amountOut > 0, 'UniswapV2Library: INSUFFICIENT_OUTPUT_AMOUNT');
require(reserveIn > 0 && reserveOut > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
uint numerator = reserveIn.mul(amountOut).mul(1000);
uint denominator = reserveOut.sub(amountOut).mul(997);
amountIn = (numerator / denominator).add(1);
}
// performs chained getAmountOut calculations on any number of pairs
function getAmountsOut(address factory, uint amountIn, address[] memory path) internal view returns (uint[] memory amounts) {
require(path.length >= 2, 'UniswapV2Library: INVALID_PATH');
amounts = new uint[](path.length);
amounts[0] = amountIn;
for (uint i; i < path.length - 1; i++) {
(uint reserveIn, uint reserveOut) = getReserves(factory, path[i], path[i + 1]);
amounts[i + 1] = getAmountOut(amounts[i], reserveIn, reserveOut);
}
}
// performs chained getAmountIn calculations on any number of pairs
function getAmountsIn(address factory, uint amountOut, address[] memory path) internal view returns (uint[] memory amounts) {
require(path.length >= 2, 'UniswapV2Library: INVALID_PATH');
amounts = new uint[](path.length);
amounts[amounts.length - 1] = amountOut;
for (uint i = path.length - 1; i > 0; i--) {
(uint reserveIn, uint reserveOut) = getReserves(factory, path[i - 1], path[i]);
amounts[i - 1] = getAmountIn(amounts[i], reserveIn, reserveOut);
}
}
} | getAmountsOut | function getAmountsOut(address factory, uint amountIn, address[] memory path) internal view returns (uint[] memory amounts) {
require(path.length >= 2, 'UniswapV2Library: INVALID_PATH');
amounts = new uint[](path.length);
amounts[0] = amountIn;
for (uint i; i < path.length - 1; i++) {
(uint reserveIn, uint reserveOut) = getReserves(factory, path[i], path[i + 1]);
amounts[i + 1] = getAmountOut(amounts[i], reserveIn, reserveOut);
}
}
| // performs chained getAmountOut calculations on any number of pairs | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
3277,
3793
]
} | 3,981 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | UniswapV2Library | library UniswapV2Library {
using SafeMath for uint;
// returns sorted token addresses, used to handle return values from pairs sorted in this order
function sortTokens(address tokenA, address tokenB) internal pure returns (address token0, address token1) {
require(tokenA != tokenB, 'UniswapV2Library: IDENTICAL_ADDRESSES');
(token0, token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
require(token0 != address(0), 'UniswapV2Library: ZERO_ADDRESS');
}
// calculates the CREATE2 address for a pair without making any external calls
function pairFor(address factory, address tokenA, address tokenB) internal pure returns (address pair) {
(address token0, address token1) = sortTokens(tokenA, tokenB);
pair = address(uint(keccak256(abi.encodePacked(
hex'ff',
factory,
keccak256(abi.encodePacked(token0, token1)),
hex'96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f' // init code hash
))));
}
// fetches and sorts the reserves for a pair
function getReserves(address factory, address tokenA, address tokenB) internal view returns (uint reserveA, uint reserveB) {
(address token0,) = sortTokens(tokenA, tokenB);
(uint reserve0, uint reserve1,) = IUniswapV2Pair(pairFor(factory, tokenA, tokenB)).getReserves();
(reserveA, reserveB) = tokenA == token0 ? (reserve0, reserve1) : (reserve1, reserve0);
}
// given some amount of an asset and pair reserves, returns an equivalent amount of the other asset
function quote(uint amountA, uint reserveA, uint reserveB) internal pure returns (uint amountB) {
require(amountA > 0, 'UniswapV2Library: INSUFFICIENT_AMOUNT');
require(reserveA > 0 && reserveB > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
amountB = amountA.mul(reserveB) / reserveA;
}
// given an input amount of an asset and pair reserves, returns the maximum output amount of the other asset
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) internal pure returns (uint amountOut) {
require(amountIn > 0, 'UniswapV2Library: INSUFFICIENT_INPUT_AMOUNT');
require(reserveIn > 0 && reserveOut > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
uint amountInWithFee = amountIn.mul(997);
uint numerator = amountInWithFee.mul(reserveOut);
uint denominator = reserveIn.mul(1000).add(amountInWithFee);
amountOut = numerator / denominator;
}
// given an output amount of an asset and pair reserves, returns a required input amount of the other asset
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) internal pure returns (uint amountIn) {
require(amountOut > 0, 'UniswapV2Library: INSUFFICIENT_OUTPUT_AMOUNT');
require(reserveIn > 0 && reserveOut > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
uint numerator = reserveIn.mul(amountOut).mul(1000);
uint denominator = reserveOut.sub(amountOut).mul(997);
amountIn = (numerator / denominator).add(1);
}
// performs chained getAmountOut calculations on any number of pairs
function getAmountsOut(address factory, uint amountIn, address[] memory path) internal view returns (uint[] memory amounts) {
require(path.length >= 2, 'UniswapV2Library: INVALID_PATH');
amounts = new uint[](path.length);
amounts[0] = amountIn;
for (uint i; i < path.length - 1; i++) {
(uint reserveIn, uint reserveOut) = getReserves(factory, path[i], path[i + 1]);
amounts[i + 1] = getAmountOut(amounts[i], reserveIn, reserveOut);
}
}
// performs chained getAmountIn calculations on any number of pairs
function getAmountsIn(address factory, uint amountOut, address[] memory path) internal view returns (uint[] memory amounts) {
require(path.length >= 2, 'UniswapV2Library: INVALID_PATH');
amounts = new uint[](path.length);
amounts[amounts.length - 1] = amountOut;
for (uint i = path.length - 1; i > 0; i--) {
(uint reserveIn, uint reserveOut) = getReserves(factory, path[i - 1], path[i]);
amounts[i - 1] = getAmountIn(amounts[i], reserveIn, reserveOut);
}
}
} | getAmountsIn | function getAmountsIn(address factory, uint amountOut, address[] memory path) internal view returns (uint[] memory amounts) {
require(path.length >= 2, 'UniswapV2Library: INVALID_PATH');
amounts = new uint[](path.length);
amounts[amounts.length - 1] = amountOut;
for (uint i = path.length - 1; i > 0; i--) {
(uint reserveIn, uint reserveOut) = getReserves(factory, path[i - 1], path[i]);
amounts[i - 1] = getAmountIn(amounts[i], reserveIn, reserveOut);
}
}
| // performs chained getAmountIn calculations on any number of pairs | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
3869,
4406
]
} | 3,982 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | TWAPBoundLib | contract TWAPBoundLib {
using SafeMath for uint256;
uint256 public constant BASE = 10**18;
function getCurrentDestinationAmount(
IUniswapV2Pair pool1,
IUniswapV2Pair pool2,
address sourceToken,
address destinationToken,
uint256 sourceAmount
) internal view returns (uint256) {
bool sourceIsToken0 = pool1.token0() == sourceToken;
uint256 inReserves;
uint256 outReserves;
(inReserves, outReserves, ) = pool1.getReserves();
uint256 destinationAmount = UniswapV2Library.getAmountOut(
sourceAmount,
sourceIsToken0 ? inReserves : outReserves,
sourceIsToken0 ? outReserves : inReserves
);
if (address(pool2) != address(0x0)) {
bool middleIsToken0 = pool2.token1() == destinationToken;
(inReserves, outReserves, ) = pool2.getReserves();
destinationAmount = UniswapV2Library.getAmountOut(
destinationAmount,
middleIsToken0 ? inReserves : outReserves,
middleIsToken0 ? outReserves : inReserves
);
}
return destinationAmount;
}
event TestTWAPDestinationAmount(
uint256 twap,
uint256 minimum,
uint256 obtained
);
function withinBounds(
IUniswapV2Pair pool1,
IUniswapV2Pair pool2,
address sourceToken,
address destinationToken,
uint256 sourceAmount,
uint256 destinationAmount,
uint256 lastCumulativePricePool1,
uint256 lastCumulativePricePool2,
uint256 timeSinceLastCumulativePriceUpdate,
uint64 slippageLimit
) internal returns (bool) {
uint256 twapDestinationAmount = getTWAPDestinationAmount(
pool1,
pool2,
sourceToken,
destinationToken,
sourceAmount,
lastCumulativePricePool1,
lastCumulativePricePool2,
timeSinceLastCumulativePriceUpdate
);
uint256 minimum = twapDestinationAmount.mul(BASE.sub(slippageLimit)).div(
BASE
);
emit TestTWAPDestinationAmount(
twapDestinationAmount,
minimum,
destinationAmount
);
return destinationAmount >= minimum;
}
// Returns the current cumulative prices for pool1 and pool2. cumulativePricePool2 will be 0 if there is no pool 2
function getCumulativePrices(
IUniswapV2Pair pool1,
IUniswapV2Pair pool2,
address sourceToken,
address destinationToken
)
internal
view
returns (uint256 cumulativePricePool1, uint256 cumulativePricePool2)
{
(cumulativePricePool1, ) = UniswapV2OracleLibrary
.currentCumulativePrices(
address(pool1),
pool1.token0() == sourceToken
);
if (address(pool2) != address(0x0)) {
// For when 2 pools are used
(cumulativePricePool2, ) = UniswapV2OracleLibrary
.currentCumulativePrices(
address(pool2),
pool2.token1() == destinationToken
);
}
}
// Returns the current TWAP
function getTWAPDestinationAmount(
IUniswapV2Pair pool1,
IUniswapV2Pair pool2,
address sourceToken,
address destinationToken,
uint256 sourceAmount,
uint256 lastCumulativePricePool1,
uint256 lastCumulativePricePool2,
uint256 timeSinceLastCumulativePriceUpdate
) internal view returns (uint256 price) {
uint256 cumulativePricePool1;
uint256 cumulativePricePool2;
(cumulativePricePool1, cumulativePricePool2) = getCumulativePrices(
pool1,
pool2,
sourceToken,
destinationToken
);
uint256 priceAverageHop1 = uint256(
uint224(
(cumulativePricePool1 - lastCumulativePricePool1) /
timeSinceLastCumulativePriceUpdate
)
);
if (priceAverageHop1 > uint192(-1)) {
// eat loss of precision
// effectively: (x / 2**112) * 1e18
priceAverageHop1 = (priceAverageHop1 >> 112) * BASE;
} else {
// cant overflow
// effectively: (x * 1e18 / 2**112)
priceAverageHop1 = (priceAverageHop1 * BASE) >> 112;
}
uint256 outputAmount = sourceAmount.mul(priceAverageHop1).div(BASE);
if (address(pool2) != address(0)) {
uint256 priceAverageHop2 = uint256(
uint224(
(cumulativePricePool2 - lastCumulativePricePool2) /
timeSinceLastCumulativePriceUpdate
)
);
if (priceAverageHop2 > uint192(-1)) {
// eat loss of precision
// effectively: (x / 2**112) * 1e18
priceAverageHop2 = (priceAverageHop2 >> 112) * BASE;
} else {
// cant overflow
// effectively: (x * 1e18 / 2**112)
priceAverageHop2 = (priceAverageHop2 * BASE) >> 112;
}
outputAmount = outputAmount.mul(priceAverageHop2).div(BASE);
}
return outputAmount;
}
} | getCumulativePrices | function getCumulativePrices(
IUniswapV2Pair pool1,
IUniswapV2Pair pool2,
address sourceToken,
address destinationToken
)
internal
view
returns (uint256 cumulativePricePool1, uint256 cumulativePricePool2)
{
(cumulativePricePool1, ) = UniswapV2OracleLibrary
.currentCumulativePrices(
address(pool1),
pool1.token0() == sourceToken
);
if (address(pool2) != address(0x0)) {
// For when 2 pools are used
(cumulativePricePool2, ) = UniswapV2OracleLibrary
.currentCumulativePrices(
address(pool2),
pool2.token1() == destinationToken
);
}
}
| // Returns the current cumulative prices for pool1 and pool2. cumulativePricePool2 will be 0 if there is no pool 2 | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
2524,
3330
]
} | 3,983 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | TWAPBoundLib | contract TWAPBoundLib {
using SafeMath for uint256;
uint256 public constant BASE = 10**18;
function getCurrentDestinationAmount(
IUniswapV2Pair pool1,
IUniswapV2Pair pool2,
address sourceToken,
address destinationToken,
uint256 sourceAmount
) internal view returns (uint256) {
bool sourceIsToken0 = pool1.token0() == sourceToken;
uint256 inReserves;
uint256 outReserves;
(inReserves, outReserves, ) = pool1.getReserves();
uint256 destinationAmount = UniswapV2Library.getAmountOut(
sourceAmount,
sourceIsToken0 ? inReserves : outReserves,
sourceIsToken0 ? outReserves : inReserves
);
if (address(pool2) != address(0x0)) {
bool middleIsToken0 = pool2.token1() == destinationToken;
(inReserves, outReserves, ) = pool2.getReserves();
destinationAmount = UniswapV2Library.getAmountOut(
destinationAmount,
middleIsToken0 ? inReserves : outReserves,
middleIsToken0 ? outReserves : inReserves
);
}
return destinationAmount;
}
event TestTWAPDestinationAmount(
uint256 twap,
uint256 minimum,
uint256 obtained
);
function withinBounds(
IUniswapV2Pair pool1,
IUniswapV2Pair pool2,
address sourceToken,
address destinationToken,
uint256 sourceAmount,
uint256 destinationAmount,
uint256 lastCumulativePricePool1,
uint256 lastCumulativePricePool2,
uint256 timeSinceLastCumulativePriceUpdate,
uint64 slippageLimit
) internal returns (bool) {
uint256 twapDestinationAmount = getTWAPDestinationAmount(
pool1,
pool2,
sourceToken,
destinationToken,
sourceAmount,
lastCumulativePricePool1,
lastCumulativePricePool2,
timeSinceLastCumulativePriceUpdate
);
uint256 minimum = twapDestinationAmount.mul(BASE.sub(slippageLimit)).div(
BASE
);
emit TestTWAPDestinationAmount(
twapDestinationAmount,
minimum,
destinationAmount
);
return destinationAmount >= minimum;
}
// Returns the current cumulative prices for pool1 and pool2. cumulativePricePool2 will be 0 if there is no pool 2
function getCumulativePrices(
IUniswapV2Pair pool1,
IUniswapV2Pair pool2,
address sourceToken,
address destinationToken
)
internal
view
returns (uint256 cumulativePricePool1, uint256 cumulativePricePool2)
{
(cumulativePricePool1, ) = UniswapV2OracleLibrary
.currentCumulativePrices(
address(pool1),
pool1.token0() == sourceToken
);
if (address(pool2) != address(0x0)) {
// For when 2 pools are used
(cumulativePricePool2, ) = UniswapV2OracleLibrary
.currentCumulativePrices(
address(pool2),
pool2.token1() == destinationToken
);
}
}
// Returns the current TWAP
function getTWAPDestinationAmount(
IUniswapV2Pair pool1,
IUniswapV2Pair pool2,
address sourceToken,
address destinationToken,
uint256 sourceAmount,
uint256 lastCumulativePricePool1,
uint256 lastCumulativePricePool2,
uint256 timeSinceLastCumulativePriceUpdate
) internal view returns (uint256 price) {
uint256 cumulativePricePool1;
uint256 cumulativePricePool2;
(cumulativePricePool1, cumulativePricePool2) = getCumulativePrices(
pool1,
pool2,
sourceToken,
destinationToken
);
uint256 priceAverageHop1 = uint256(
uint224(
(cumulativePricePool1 - lastCumulativePricePool1) /
timeSinceLastCumulativePriceUpdate
)
);
if (priceAverageHop1 > uint192(-1)) {
// eat loss of precision
// effectively: (x / 2**112) * 1e18
priceAverageHop1 = (priceAverageHop1 >> 112) * BASE;
} else {
// cant overflow
// effectively: (x * 1e18 / 2**112)
priceAverageHop1 = (priceAverageHop1 * BASE) >> 112;
}
uint256 outputAmount = sourceAmount.mul(priceAverageHop1).div(BASE);
if (address(pool2) != address(0)) {
uint256 priceAverageHop2 = uint256(
uint224(
(cumulativePricePool2 - lastCumulativePricePool2) /
timeSinceLastCumulativePriceUpdate
)
);
if (priceAverageHop2 > uint192(-1)) {
// eat loss of precision
// effectively: (x / 2**112) * 1e18
priceAverageHop2 = (priceAverageHop2 >> 112) * BASE;
} else {
// cant overflow
// effectively: (x * 1e18 / 2**112)
priceAverageHop2 = (priceAverageHop2 * BASE) >> 112;
}
outputAmount = outputAmount.mul(priceAverageHop2).div(BASE);
}
return outputAmount;
}
} | getTWAPDestinationAmount | function getTWAPDestinationAmount(
IUniswapV2Pair pool1,
IUniswapV2Pair pool2,
address sourceToken,
address destinationToken,
uint256 sourceAmount,
uint256 lastCumulativePricePool1,
uint256 lastCumulativePricePool2,
uint256 timeSinceLastCumulativePriceUpdate
) internal view returns (uint256 price) {
uint256 cumulativePricePool1;
uint256 cumulativePricePool2;
(cumulativePricePool1, cumulativePricePool2) = getCumulativePrices(
pool1,
pool2,
sourceToken,
destinationToken
);
uint256 priceAverageHop1 = uint256(
uint224(
(cumulativePricePool1 - lastCumulativePricePool1) /
timeSinceLastCumulativePriceUpdate
)
);
if (priceAverageHop1 > uint192(-1)) {
// eat loss of precision
// effectively: (x / 2**112) * 1e18
priceAverageHop1 = (priceAverageHop1 >> 112) * BASE;
} else {
// cant overflow
// effectively: (x * 1e18 / 2**112)
priceAverageHop1 = (priceAverageHop1 * BASE) >> 112;
}
uint256 outputAmount = sourceAmount.mul(priceAverageHop1).div(BASE);
if (address(pool2) != address(0)) {
uint256 priceAverageHop2 = uint256(
uint224(
(cumulativePricePool2 - lastCumulativePricePool2) /
timeSinceLastCumulativePriceUpdate
)
);
if (priceAverageHop2 > uint192(-1)) {
// eat loss of precision
// effectively: (x / 2**112) * 1e18
priceAverageHop2 = (priceAverageHop2 >> 112) * BASE;
} else {
// cant overflow
// effectively: (x * 1e18 / 2**112)
priceAverageHop2 = (priceAverageHop2 * BASE) >> 112;
}
outputAmount = outputAmount.mul(priceAverageHop2).div(BASE);
}
return outputAmount;
}
| // Returns the current TWAP | LineComment | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
3366,
5512
]
} | 3,984 |
||
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | Swapper | contract Swapper is YamSubGoverned, TWAPBoundLib {
/** Structs */
struct SwapParams {
address sourceToken;
address destinationToken;
address router;
address pool1;
address pool2;
uint128 sourceAmount;
uint64 slippageLimit;
}
struct SwapState {
SwapParams params;
uint256 lastCumulativePriceUpdate;
uint256 lastCumulativePricePool1;
uint256 lastCumulativePricePool2;
}
/** Constants */
uint64 private constant MIN_TWAP_TIME = 1 hours;
uint64 private constant MAX_TWAP_TIME = 3 hours;
/** State */
SwapState[] public swaps;
address public reserves;
constructor(address _gov, address _reserves) public {
gov = _gov;
reserves = _reserves;
}
/** Gov functions */
function addSwap(SwapParams calldata params) external onlyGovOrSubGov {
swaps.push(
SwapState({
params: params,
lastCumulativePriceUpdate: 0,
lastCumulativePricePool1: 0,
lastCumulativePricePool2: 0
})
);
}
function setReserves(address _reserves) external onlyGovOrSubGov {
reserves = _reserves;
}
function removeSwap(uint16 index) external onlyGovOrSubGov {
_removeSwap(index);
}
/** Execution functions */
function execute(
uint16 swapId,
uint128 amountToTrade,
uint256 minDestinationAmount
) external {
SwapState memory swap = swaps[swapId];
// Check if there is any left to trade
require(swap.params.sourceAmount > 0);
// Can't be trying to trade more than the remaining amount
require(amountToTrade <= swap.params.sourceAmount);
uint256 timestamp = block.timestamp;
uint256 timeSinceLastCumulativePriceUpdate = timestamp -
swap.lastCumulativePriceUpdate;
// Require that the cumulative prices were last updated between MIN_TWAP_TIME and MAX_TWAP_TIME
require(
timeSinceLastCumulativePriceUpdate >= MIN_TWAP_TIME &&
timeSinceLastCumulativePriceUpdate <= MAX_TWAP_TIME
);
IERC20(swap.params.sourceToken).transferFrom(
reserves,
address(this),
amountToTrade
);
if (
IERC20(swap.params.sourceToken).allowance(
address(this),
swap.params.router
) < amountToTrade
) {
IERC20(swap.params.sourceToken).approve(
swap.params.router,
uint256(-1)
);
}
address[] memory path;
if (swap.params.pool2 == address(0x0)) {
path = new address[](2);
path[0] = swap.params.sourceToken;
path[1] = swap.params.destinationToken;
} else {
address token0 = IUniswapV2Pair(swap.params.pool1).token0();
path = new address[](3);
path[0] = swap.params.sourceToken;
path[1] = token0 == swap.params.sourceToken
? IUniswapV2Pair(swap.params.pool1).token1()
: token0;
path[2] = swap.params.destinationToken;
}
uint256[] memory amounts = UniRouter2(swap.params.router)
.swapExactTokensForTokens(
uint256(amountToTrade),
minDestinationAmount,
path,
reserves,
timestamp
);
require(
TWAPBoundLib.withinBounds(
IUniswapV2Pair(swap.params.pool1),
IUniswapV2Pair(swap.params.pool2),
swap.params.sourceToken,
swap.params.destinationToken,
uint256(amountToTrade),
amounts[amounts.length - 1],
swap.lastCumulativePricePool1,
swap.lastCumulativePricePool2,
timeSinceLastCumulativePriceUpdate,
swap.params.slippageLimit
)
);
if(amountToTrade == swap.params.sourceAmount){
_removeSwap(swapId);
} else {
swaps[swapId].params.sourceAmount -= amountToTrade;
}
}
function updateCumulativePrice(uint16 swapId) external {
SwapState memory swap = swaps[swapId];
uint256 timestamp = block.timestamp;
require(timestamp - swap.lastCumulativePriceUpdate > MAX_TWAP_TIME);
(
swaps[swapId].lastCumulativePricePool1,
swaps[swapId].lastCumulativePricePool2
) = TWAPBoundLib.getCumulativePrices(
IUniswapV2Pair(swap.params.pool1),
IUniswapV2Pair(swap.params.pool2),
swap.params.sourceToken,
swap.params.destinationToken
);
swaps[swapId].lastCumulativePriceUpdate = timestamp;
}
/** Internal functions */
function _removeSwap(uint16 index) internal {
swaps[index] = SwapState({
params: SwapParams(
0x0000000000000000000000000000000000000000,
0x0000000000000000000000000000000000000000,
0x0000000000000000000000000000000000000000,
0x0000000000000000000000000000000000000000,
0x0000000000000000000000000000000000000000,
0,
0
),
lastCumulativePriceUpdate: 0,
lastCumulativePricePool1: 0,
lastCumulativePricePool2: 0
});
}
} | // Swapper allows the governor to create swaps
// A swap executes trustlessly and minimizes slippage to a set amount by using TWAPs
// Swaps can be broken up, TWAPs repeatedly updated, etc.
// Anyone can update TWAPs or execute a swap | LineComment | addSwap | function addSwap(SwapParams calldata params) external onlyGovOrSubGov {
swaps.push(
SwapState({
params: params,
lastCumulativePriceUpdate: 0,
lastCumulativePricePool1: 0,
lastCumulativePricePool2: 0
})
);
}
| /** Gov functions */ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
858,
1186
]
} | 3,985 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | Swapper | contract Swapper is YamSubGoverned, TWAPBoundLib {
/** Structs */
struct SwapParams {
address sourceToken;
address destinationToken;
address router;
address pool1;
address pool2;
uint128 sourceAmount;
uint64 slippageLimit;
}
struct SwapState {
SwapParams params;
uint256 lastCumulativePriceUpdate;
uint256 lastCumulativePricePool1;
uint256 lastCumulativePricePool2;
}
/** Constants */
uint64 private constant MIN_TWAP_TIME = 1 hours;
uint64 private constant MAX_TWAP_TIME = 3 hours;
/** State */
SwapState[] public swaps;
address public reserves;
constructor(address _gov, address _reserves) public {
gov = _gov;
reserves = _reserves;
}
/** Gov functions */
function addSwap(SwapParams calldata params) external onlyGovOrSubGov {
swaps.push(
SwapState({
params: params,
lastCumulativePriceUpdate: 0,
lastCumulativePricePool1: 0,
lastCumulativePricePool2: 0
})
);
}
function setReserves(address _reserves) external onlyGovOrSubGov {
reserves = _reserves;
}
function removeSwap(uint16 index) external onlyGovOrSubGov {
_removeSwap(index);
}
/** Execution functions */
function execute(
uint16 swapId,
uint128 amountToTrade,
uint256 minDestinationAmount
) external {
SwapState memory swap = swaps[swapId];
// Check if there is any left to trade
require(swap.params.sourceAmount > 0);
// Can't be trying to trade more than the remaining amount
require(amountToTrade <= swap.params.sourceAmount);
uint256 timestamp = block.timestamp;
uint256 timeSinceLastCumulativePriceUpdate = timestamp -
swap.lastCumulativePriceUpdate;
// Require that the cumulative prices were last updated between MIN_TWAP_TIME and MAX_TWAP_TIME
require(
timeSinceLastCumulativePriceUpdate >= MIN_TWAP_TIME &&
timeSinceLastCumulativePriceUpdate <= MAX_TWAP_TIME
);
IERC20(swap.params.sourceToken).transferFrom(
reserves,
address(this),
amountToTrade
);
if (
IERC20(swap.params.sourceToken).allowance(
address(this),
swap.params.router
) < amountToTrade
) {
IERC20(swap.params.sourceToken).approve(
swap.params.router,
uint256(-1)
);
}
address[] memory path;
if (swap.params.pool2 == address(0x0)) {
path = new address[](2);
path[0] = swap.params.sourceToken;
path[1] = swap.params.destinationToken;
} else {
address token0 = IUniswapV2Pair(swap.params.pool1).token0();
path = new address[](3);
path[0] = swap.params.sourceToken;
path[1] = token0 == swap.params.sourceToken
? IUniswapV2Pair(swap.params.pool1).token1()
: token0;
path[2] = swap.params.destinationToken;
}
uint256[] memory amounts = UniRouter2(swap.params.router)
.swapExactTokensForTokens(
uint256(amountToTrade),
minDestinationAmount,
path,
reserves,
timestamp
);
require(
TWAPBoundLib.withinBounds(
IUniswapV2Pair(swap.params.pool1),
IUniswapV2Pair(swap.params.pool2),
swap.params.sourceToken,
swap.params.destinationToken,
uint256(amountToTrade),
amounts[amounts.length - 1],
swap.lastCumulativePricePool1,
swap.lastCumulativePricePool2,
timeSinceLastCumulativePriceUpdate,
swap.params.slippageLimit
)
);
if(amountToTrade == swap.params.sourceAmount){
_removeSwap(swapId);
} else {
swaps[swapId].params.sourceAmount -= amountToTrade;
}
}
function updateCumulativePrice(uint16 swapId) external {
SwapState memory swap = swaps[swapId];
uint256 timestamp = block.timestamp;
require(timestamp - swap.lastCumulativePriceUpdate > MAX_TWAP_TIME);
(
swaps[swapId].lastCumulativePricePool1,
swaps[swapId].lastCumulativePricePool2
) = TWAPBoundLib.getCumulativePrices(
IUniswapV2Pair(swap.params.pool1),
IUniswapV2Pair(swap.params.pool2),
swap.params.sourceToken,
swap.params.destinationToken
);
swaps[swapId].lastCumulativePriceUpdate = timestamp;
}
/** Internal functions */
function _removeSwap(uint16 index) internal {
swaps[index] = SwapState({
params: SwapParams(
0x0000000000000000000000000000000000000000,
0x0000000000000000000000000000000000000000,
0x0000000000000000000000000000000000000000,
0x0000000000000000000000000000000000000000,
0x0000000000000000000000000000000000000000,
0,
0
),
lastCumulativePriceUpdate: 0,
lastCumulativePricePool1: 0,
lastCumulativePricePool2: 0
});
}
} | // Swapper allows the governor to create swaps
// A swap executes trustlessly and minimizes slippage to a set amount by using TWAPs
// Swaps can be broken up, TWAPs repeatedly updated, etc.
// Anyone can update TWAPs or execute a swap | LineComment | execute | function execute(
uint16 swapId,
uint128 amountToTrade,
uint256 minDestinationAmount
) external {
SwapState memory swap = swaps[swapId];
// Check if there is any left to trade
require(swap.params.sourceAmount > 0);
// Can't be trying to trade more than the remaining amount
require(amountToTrade <= swap.params.sourceAmount);
uint256 timestamp = block.timestamp;
uint256 timeSinceLastCumulativePriceUpdate = timestamp -
swap.lastCumulativePriceUpdate;
// Require that the cumulative prices were last updated between MIN_TWAP_TIME and MAX_TWAP_TIME
require(
timeSinceLastCumulativePriceUpdate >= MIN_TWAP_TIME &&
timeSinceLastCumulativePriceUpdate <= MAX_TWAP_TIME
);
IERC20(swap.params.sourceToken).transferFrom(
reserves,
address(this),
amountToTrade
);
if (
IERC20(swap.params.sourceToken).allowance(
address(this),
swap.params.router
) < amountToTrade
) {
IERC20(swap.params.sourceToken).approve(
swap.params.router,
uint256(-1)
);
}
address[] memory path;
if (swap.params.pool2 == address(0x0)) {
path = new address[](2);
path[0] = swap.params.sourceToken;
path[1] = swap.params.destinationToken;
} else {
address token0 = IUniswapV2Pair(swap.params.pool1).token0();
path = new address[](3);
path[0] = swap.params.sourceToken;
path[1] = token0 == swap.params.sourceToken
? IUniswapV2Pair(swap.params.pool1).token1()
: token0;
path[2] = swap.params.destinationToken;
}
uint256[] memory amounts = UniRouter2(swap.params.router)
.swapExactTokensForTokens(
uint256(amountToTrade),
minDestinationAmount,
path,
reserves,
timestamp
);
require(
TWAPBoundLib.withinBounds(
IUniswapV2Pair(swap.params.pool1),
IUniswapV2Pair(swap.params.pool2),
swap.params.sourceToken,
swap.params.destinationToken,
uint256(amountToTrade),
amounts[amounts.length - 1],
swap.lastCumulativePricePool1,
swap.lastCumulativePricePool2,
timeSinceLastCumulativePriceUpdate,
swap.params.slippageLimit
)
);
if(amountToTrade == swap.params.sourceAmount){
_removeSwap(swapId);
} else {
swaps[swapId].params.sourceAmount -= amountToTrade;
}
}
| /** Execution functions */ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
1438,
4387
]
} | 3,986 |
Proposal | Proposal.sol | 0x706f53175d91cf03381e31df39728c6bac352f2c | Solidity | Swapper | contract Swapper is YamSubGoverned, TWAPBoundLib {
/** Structs */
struct SwapParams {
address sourceToken;
address destinationToken;
address router;
address pool1;
address pool2;
uint128 sourceAmount;
uint64 slippageLimit;
}
struct SwapState {
SwapParams params;
uint256 lastCumulativePriceUpdate;
uint256 lastCumulativePricePool1;
uint256 lastCumulativePricePool2;
}
/** Constants */
uint64 private constant MIN_TWAP_TIME = 1 hours;
uint64 private constant MAX_TWAP_TIME = 3 hours;
/** State */
SwapState[] public swaps;
address public reserves;
constructor(address _gov, address _reserves) public {
gov = _gov;
reserves = _reserves;
}
/** Gov functions */
function addSwap(SwapParams calldata params) external onlyGovOrSubGov {
swaps.push(
SwapState({
params: params,
lastCumulativePriceUpdate: 0,
lastCumulativePricePool1: 0,
lastCumulativePricePool2: 0
})
);
}
function setReserves(address _reserves) external onlyGovOrSubGov {
reserves = _reserves;
}
function removeSwap(uint16 index) external onlyGovOrSubGov {
_removeSwap(index);
}
/** Execution functions */
function execute(
uint16 swapId,
uint128 amountToTrade,
uint256 minDestinationAmount
) external {
SwapState memory swap = swaps[swapId];
// Check if there is any left to trade
require(swap.params.sourceAmount > 0);
// Can't be trying to trade more than the remaining amount
require(amountToTrade <= swap.params.sourceAmount);
uint256 timestamp = block.timestamp;
uint256 timeSinceLastCumulativePriceUpdate = timestamp -
swap.lastCumulativePriceUpdate;
// Require that the cumulative prices were last updated between MIN_TWAP_TIME and MAX_TWAP_TIME
require(
timeSinceLastCumulativePriceUpdate >= MIN_TWAP_TIME &&
timeSinceLastCumulativePriceUpdate <= MAX_TWAP_TIME
);
IERC20(swap.params.sourceToken).transferFrom(
reserves,
address(this),
amountToTrade
);
if (
IERC20(swap.params.sourceToken).allowance(
address(this),
swap.params.router
) < amountToTrade
) {
IERC20(swap.params.sourceToken).approve(
swap.params.router,
uint256(-1)
);
}
address[] memory path;
if (swap.params.pool2 == address(0x0)) {
path = new address[](2);
path[0] = swap.params.sourceToken;
path[1] = swap.params.destinationToken;
} else {
address token0 = IUniswapV2Pair(swap.params.pool1).token0();
path = new address[](3);
path[0] = swap.params.sourceToken;
path[1] = token0 == swap.params.sourceToken
? IUniswapV2Pair(swap.params.pool1).token1()
: token0;
path[2] = swap.params.destinationToken;
}
uint256[] memory amounts = UniRouter2(swap.params.router)
.swapExactTokensForTokens(
uint256(amountToTrade),
minDestinationAmount,
path,
reserves,
timestamp
);
require(
TWAPBoundLib.withinBounds(
IUniswapV2Pair(swap.params.pool1),
IUniswapV2Pair(swap.params.pool2),
swap.params.sourceToken,
swap.params.destinationToken,
uint256(amountToTrade),
amounts[amounts.length - 1],
swap.lastCumulativePricePool1,
swap.lastCumulativePricePool2,
timeSinceLastCumulativePriceUpdate,
swap.params.slippageLimit
)
);
if(amountToTrade == swap.params.sourceAmount){
_removeSwap(swapId);
} else {
swaps[swapId].params.sourceAmount -= amountToTrade;
}
}
function updateCumulativePrice(uint16 swapId) external {
SwapState memory swap = swaps[swapId];
uint256 timestamp = block.timestamp;
require(timestamp - swap.lastCumulativePriceUpdate > MAX_TWAP_TIME);
(
swaps[swapId].lastCumulativePricePool1,
swaps[swapId].lastCumulativePricePool2
) = TWAPBoundLib.getCumulativePrices(
IUniswapV2Pair(swap.params.pool1),
IUniswapV2Pair(swap.params.pool2),
swap.params.sourceToken,
swap.params.destinationToken
);
swaps[swapId].lastCumulativePriceUpdate = timestamp;
}
/** Internal functions */
function _removeSwap(uint16 index) internal {
swaps[index] = SwapState({
params: SwapParams(
0x0000000000000000000000000000000000000000,
0x0000000000000000000000000000000000000000,
0x0000000000000000000000000000000000000000,
0x0000000000000000000000000000000000000000,
0x0000000000000000000000000000000000000000,
0,
0
),
lastCumulativePriceUpdate: 0,
lastCumulativePricePool1: 0,
lastCumulativePricePool2: 0
});
}
} | // Swapper allows the governor to create swaps
// A swap executes trustlessly and minimizes slippage to a set amount by using TWAPs
// Swaps can be broken up, TWAPs repeatedly updated, etc.
// Anyone can update TWAPs or execute a swap | LineComment | _removeSwap | function _removeSwap(uint16 index) internal {
swaps[index] = SwapState({
params: SwapParams(
0x0000000000000000000000000000000000000000,
0x0000000000000000000000000000000000000000,
0x0000000000000000000000000000000000000000,
0x0000000000000000000000000000000000000000,
0x0000000000000000000000000000000000000000,
0,
0
),
lastCumulativePriceUpdate: 0,
lastCumulativePricePool1: 0,
lastCumulativePricePool2: 0
});
}
| /** Internal functions */ | NatSpecMultiLine | v0.5.15+commit.6a57276f | GNU GPLv3 | bzzr://e9694d5d6ccdcfcb104da2e9f5a2c114de30049a1a75c3f378ac1116666957cd | {
"func_code_index": [
5079,
5704
]
} | 3,987 |
Fider | contracts/Fider.sol | 0x715079d8285d91baab59055b47c17de4c5a378ac | Solidity | Fider | contract Fider is ERC20Detailed, ERC20Burnable, ERC20Capped, ERC20Pausable, AdminRole, SpenderRole, RecipientRole {
using SafeERC20 for IERC20;
address private root;
modifier onlyRoot() {
require(msg.sender == root, "This operation can only be performed by root account");
_;
}
constructor(string name, string symbol, uint8 decimals, uint256 cap)
ERC20Detailed(name, symbol, decimals) ERC20Capped(cap) ERC20Mintable() ERC20() public {
// Contract deployer (root) is automatically added as a minter in the MinterRole constructor
// We revert this in here in order to separate the responsibilities of Root and Minter
_removeMinter(msg.sender);
// Contract deployer (root) is automatically added as a pauser in the PauserRole constructor
// We revert this in here in order to separate the responsibilities of Root and Pauser
_removePauser(msg.sender);
root = msg.sender;
}
/*** ACCESS CONTROL MANAGEMENT ***/
/**
* This is particularly for the cases where there is a chance that the keys are compromised
* but no one has attacked/abused them yet, this function gives company the option to be on
* the safe side and start using another address.
* @dev Transfers control of the contract to a newRoot.
* @param _newRoot The address to transfer ownership to.
*/
function transferRoot(address _newRoot) external onlyRoot {
require(_newRoot != address(0));
root = _newRoot;
}
/**
* Designates a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to mint
*/
function addMinter(address account) public onlyRoot {
_addMinter(account);
}
/**
* Revokes a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to mint anymore
*/
function removeMinter(address account) external onlyRoot {
_removeMinter(account);
}
/**
* Designates a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to pause/unpause the token
*/
function addPauser(address account) public onlyRoot {
_addPauser(account);
}
/**
* Revokes a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to pause/unpause the token anymore
*/
function removePauser(address account) external onlyRoot {
_removePauser(account);
}
/**
* Designates a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to administer spenders and recipients
*/
function addAdmin(address account) external onlyRoot {
_addAdmin(account);
}
/**
* Revokes a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to administer spenders and recipients anymore
*/
function removeAdmin(address account) external onlyRoot {
_removeAdmin(account);
}
/**
* Designates a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will be able to send tokens
*/
function addSpender(address account) external onlyAdmin {
_addSpender(account);
}
/**
* Revokes a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will not be able to send tokens anymore
*/
function removeSpender(address account) external onlyAdmin {
_removeSpender(account);
}
/**
* Designates a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will be able to receive tokens
*/
function addRecipient(address account) external onlyAdmin {
_addRecipient(account);
}
/**
* Revokes a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will not be able to receive tokens anymore
*/
function removeRecipient(address account) external onlyAdmin {
_removeRecipient(account);
}
/*** MINTING ***/
/**
* @dev Function to mint tokens
* @param to The address that will receive the minted tokens. Must be an authorized spender.
* @param value The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address to, uint256 value) public onlyMinter returns (bool) {
require(isSpender(to), "To must be an authorized spender");
return super.mint(to, value);
}
/*** BURNING ***/
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* This function can only be called by an authorized minter.
* @param from address The address which you want to burn tokens from
* @param value uint256 The amount of tokens to be burned
*/
function burnFrom(address from, uint256 value) public onlyMinter {
_burnFrom(from, value);
}
/*** TRANSFER ***/
/**
* @dev Transfer token for a specified address
* This function can only be called by an authorized spender.
* @param to The address to transfer to. Must be an authorized recipient.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public onlySpender returns (bool) {
require(isRecipient(to), "To must be an authorized recipient");
return super.transfer(to, value);
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* This function can only be called by an authorized spender
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.approve(spender, value);
}
/**
* @dev Transfer tokens from one address to another
* This function can only be called by an authorized spender.
* @param from address The address which you want to send tokens from. Must be an authorized spender.
* @param to address The address which you want to transfer to. Must be an authorized recipient.
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(address from, address to, uint256 value) public onlySpender returns (bool) {
require(isSpender(from), "From must be an authorized spender");
require(isRecipient(to), "To must be an authorized recipient");
return super.transferFrom(from, to, value);
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.increaseAllowance(spender, addedValue);
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.decreaseAllowance(spender, subtractedValue);
}
/** RECOVERING ASSETS MISTAKENLY SENT TO CONTRACT **/
/**
* @dev Disallows direct send by setting a default function without the `payable` flag.
*/
function() external {
}
/**
* @dev Transfer all Ether held by the contract to the root.
*/
function reclaimEther() external onlyRoot {
root.transfer(address(this).balance);
}
/**
* @dev Reclaim all IERC20 compatible tokens
* @param _token IERC20 The address of the token contract
*/
function reclaimERC20Token(IERC20 _token) external onlyRoot {
uint256 balance = _token.balanceOf(this);
_token.safeTransfer(root, balance);
}
} | transferRoot | function transferRoot(address _newRoot) external onlyRoot {
require(_newRoot != address(0));
root = _newRoot;
}
| /**
* This is particularly for the cases where there is a chance that the keys are compromised
* but no one has attacked/abused them yet, this function gives company the option to be on
* the safe side and start using another address.
* @dev Transfers control of the contract to a newRoot.
* @param _newRoot The address to transfer ownership to.
*/ | NatSpecMultiLine | v0.4.24+commit.e67f0147 | bzzr://0263f906d97e70bd1cb272121de9b39a9911143a89b3fba8e94bdad599b0af36 | {
"func_code_index": [
1427,
1566
]
} | 3,988 |
|||
Fider | contracts/Fider.sol | 0x715079d8285d91baab59055b47c17de4c5a378ac | Solidity | Fider | contract Fider is ERC20Detailed, ERC20Burnable, ERC20Capped, ERC20Pausable, AdminRole, SpenderRole, RecipientRole {
using SafeERC20 for IERC20;
address private root;
modifier onlyRoot() {
require(msg.sender == root, "This operation can only be performed by root account");
_;
}
constructor(string name, string symbol, uint8 decimals, uint256 cap)
ERC20Detailed(name, symbol, decimals) ERC20Capped(cap) ERC20Mintable() ERC20() public {
// Contract deployer (root) is automatically added as a minter in the MinterRole constructor
// We revert this in here in order to separate the responsibilities of Root and Minter
_removeMinter(msg.sender);
// Contract deployer (root) is automatically added as a pauser in the PauserRole constructor
// We revert this in here in order to separate the responsibilities of Root and Pauser
_removePauser(msg.sender);
root = msg.sender;
}
/*** ACCESS CONTROL MANAGEMENT ***/
/**
* This is particularly for the cases where there is a chance that the keys are compromised
* but no one has attacked/abused them yet, this function gives company the option to be on
* the safe side and start using another address.
* @dev Transfers control of the contract to a newRoot.
* @param _newRoot The address to transfer ownership to.
*/
function transferRoot(address _newRoot) external onlyRoot {
require(_newRoot != address(0));
root = _newRoot;
}
/**
* Designates a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to mint
*/
function addMinter(address account) public onlyRoot {
_addMinter(account);
}
/**
* Revokes a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to mint anymore
*/
function removeMinter(address account) external onlyRoot {
_removeMinter(account);
}
/**
* Designates a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to pause/unpause the token
*/
function addPauser(address account) public onlyRoot {
_addPauser(account);
}
/**
* Revokes a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to pause/unpause the token anymore
*/
function removePauser(address account) external onlyRoot {
_removePauser(account);
}
/**
* Designates a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to administer spenders and recipients
*/
function addAdmin(address account) external onlyRoot {
_addAdmin(account);
}
/**
* Revokes a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to administer spenders and recipients anymore
*/
function removeAdmin(address account) external onlyRoot {
_removeAdmin(account);
}
/**
* Designates a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will be able to send tokens
*/
function addSpender(address account) external onlyAdmin {
_addSpender(account);
}
/**
* Revokes a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will not be able to send tokens anymore
*/
function removeSpender(address account) external onlyAdmin {
_removeSpender(account);
}
/**
* Designates a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will be able to receive tokens
*/
function addRecipient(address account) external onlyAdmin {
_addRecipient(account);
}
/**
* Revokes a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will not be able to receive tokens anymore
*/
function removeRecipient(address account) external onlyAdmin {
_removeRecipient(account);
}
/*** MINTING ***/
/**
* @dev Function to mint tokens
* @param to The address that will receive the minted tokens. Must be an authorized spender.
* @param value The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address to, uint256 value) public onlyMinter returns (bool) {
require(isSpender(to), "To must be an authorized spender");
return super.mint(to, value);
}
/*** BURNING ***/
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* This function can only be called by an authorized minter.
* @param from address The address which you want to burn tokens from
* @param value uint256 The amount of tokens to be burned
*/
function burnFrom(address from, uint256 value) public onlyMinter {
_burnFrom(from, value);
}
/*** TRANSFER ***/
/**
* @dev Transfer token for a specified address
* This function can only be called by an authorized spender.
* @param to The address to transfer to. Must be an authorized recipient.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public onlySpender returns (bool) {
require(isRecipient(to), "To must be an authorized recipient");
return super.transfer(to, value);
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* This function can only be called by an authorized spender
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.approve(spender, value);
}
/**
* @dev Transfer tokens from one address to another
* This function can only be called by an authorized spender.
* @param from address The address which you want to send tokens from. Must be an authorized spender.
* @param to address The address which you want to transfer to. Must be an authorized recipient.
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(address from, address to, uint256 value) public onlySpender returns (bool) {
require(isSpender(from), "From must be an authorized spender");
require(isRecipient(to), "To must be an authorized recipient");
return super.transferFrom(from, to, value);
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.increaseAllowance(spender, addedValue);
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.decreaseAllowance(spender, subtractedValue);
}
/** RECOVERING ASSETS MISTAKENLY SENT TO CONTRACT **/
/**
* @dev Disallows direct send by setting a default function without the `payable` flag.
*/
function() external {
}
/**
* @dev Transfer all Ether held by the contract to the root.
*/
function reclaimEther() external onlyRoot {
root.transfer(address(this).balance);
}
/**
* @dev Reclaim all IERC20 compatible tokens
* @param _token IERC20 The address of the token contract
*/
function reclaimERC20Token(IERC20 _token) external onlyRoot {
uint256 balance = _token.balanceOf(this);
_token.safeTransfer(root, balance);
}
} | addMinter | function addMinter(address account) public onlyRoot {
_addMinter(account);
}
| /**
* Designates a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to mint
*/ | NatSpecMultiLine | v0.4.24+commit.e67f0147 | bzzr://0263f906d97e70bd1cb272121de9b39a9911143a89b3fba8e94bdad599b0af36 | {
"func_code_index": [
1900,
1995
]
} | 3,989 |
|||
Fider | contracts/Fider.sol | 0x715079d8285d91baab59055b47c17de4c5a378ac | Solidity | Fider | contract Fider is ERC20Detailed, ERC20Burnable, ERC20Capped, ERC20Pausable, AdminRole, SpenderRole, RecipientRole {
using SafeERC20 for IERC20;
address private root;
modifier onlyRoot() {
require(msg.sender == root, "This operation can only be performed by root account");
_;
}
constructor(string name, string symbol, uint8 decimals, uint256 cap)
ERC20Detailed(name, symbol, decimals) ERC20Capped(cap) ERC20Mintable() ERC20() public {
// Contract deployer (root) is automatically added as a minter in the MinterRole constructor
// We revert this in here in order to separate the responsibilities of Root and Minter
_removeMinter(msg.sender);
// Contract deployer (root) is automatically added as a pauser in the PauserRole constructor
// We revert this in here in order to separate the responsibilities of Root and Pauser
_removePauser(msg.sender);
root = msg.sender;
}
/*** ACCESS CONTROL MANAGEMENT ***/
/**
* This is particularly for the cases where there is a chance that the keys are compromised
* but no one has attacked/abused them yet, this function gives company the option to be on
* the safe side and start using another address.
* @dev Transfers control of the contract to a newRoot.
* @param _newRoot The address to transfer ownership to.
*/
function transferRoot(address _newRoot) external onlyRoot {
require(_newRoot != address(0));
root = _newRoot;
}
/**
* Designates a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to mint
*/
function addMinter(address account) public onlyRoot {
_addMinter(account);
}
/**
* Revokes a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to mint anymore
*/
function removeMinter(address account) external onlyRoot {
_removeMinter(account);
}
/**
* Designates a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to pause/unpause the token
*/
function addPauser(address account) public onlyRoot {
_addPauser(account);
}
/**
* Revokes a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to pause/unpause the token anymore
*/
function removePauser(address account) external onlyRoot {
_removePauser(account);
}
/**
* Designates a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to administer spenders and recipients
*/
function addAdmin(address account) external onlyRoot {
_addAdmin(account);
}
/**
* Revokes a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to administer spenders and recipients anymore
*/
function removeAdmin(address account) external onlyRoot {
_removeAdmin(account);
}
/**
* Designates a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will be able to send tokens
*/
function addSpender(address account) external onlyAdmin {
_addSpender(account);
}
/**
* Revokes a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will not be able to send tokens anymore
*/
function removeSpender(address account) external onlyAdmin {
_removeSpender(account);
}
/**
* Designates a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will be able to receive tokens
*/
function addRecipient(address account) external onlyAdmin {
_addRecipient(account);
}
/**
* Revokes a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will not be able to receive tokens anymore
*/
function removeRecipient(address account) external onlyAdmin {
_removeRecipient(account);
}
/*** MINTING ***/
/**
* @dev Function to mint tokens
* @param to The address that will receive the minted tokens. Must be an authorized spender.
* @param value The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address to, uint256 value) public onlyMinter returns (bool) {
require(isSpender(to), "To must be an authorized spender");
return super.mint(to, value);
}
/*** BURNING ***/
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* This function can only be called by an authorized minter.
* @param from address The address which you want to burn tokens from
* @param value uint256 The amount of tokens to be burned
*/
function burnFrom(address from, uint256 value) public onlyMinter {
_burnFrom(from, value);
}
/*** TRANSFER ***/
/**
* @dev Transfer token for a specified address
* This function can only be called by an authorized spender.
* @param to The address to transfer to. Must be an authorized recipient.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public onlySpender returns (bool) {
require(isRecipient(to), "To must be an authorized recipient");
return super.transfer(to, value);
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* This function can only be called by an authorized spender
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.approve(spender, value);
}
/**
* @dev Transfer tokens from one address to another
* This function can only be called by an authorized spender.
* @param from address The address which you want to send tokens from. Must be an authorized spender.
* @param to address The address which you want to transfer to. Must be an authorized recipient.
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(address from, address to, uint256 value) public onlySpender returns (bool) {
require(isSpender(from), "From must be an authorized spender");
require(isRecipient(to), "To must be an authorized recipient");
return super.transferFrom(from, to, value);
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.increaseAllowance(spender, addedValue);
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.decreaseAllowance(spender, subtractedValue);
}
/** RECOVERING ASSETS MISTAKENLY SENT TO CONTRACT **/
/**
* @dev Disallows direct send by setting a default function without the `payable` flag.
*/
function() external {
}
/**
* @dev Transfer all Ether held by the contract to the root.
*/
function reclaimEther() external onlyRoot {
root.transfer(address(this).balance);
}
/**
* @dev Reclaim all IERC20 compatible tokens
* @param _token IERC20 The address of the token contract
*/
function reclaimERC20Token(IERC20 _token) external onlyRoot {
uint256 balance = _token.balanceOf(this);
_token.safeTransfer(root, balance);
}
} | removeMinter | function removeMinter(address account) external onlyRoot {
_removeMinter(account);
}
| /**
* Revokes a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to mint anymore
*/ | NatSpecMultiLine | v0.4.24+commit.e67f0147 | bzzr://0263f906d97e70bd1cb272121de9b39a9911143a89b3fba8e94bdad599b0af36 | {
"func_code_index": [
2338,
2441
]
} | 3,990 |
|||
Fider | contracts/Fider.sol | 0x715079d8285d91baab59055b47c17de4c5a378ac | Solidity | Fider | contract Fider is ERC20Detailed, ERC20Burnable, ERC20Capped, ERC20Pausable, AdminRole, SpenderRole, RecipientRole {
using SafeERC20 for IERC20;
address private root;
modifier onlyRoot() {
require(msg.sender == root, "This operation can only be performed by root account");
_;
}
constructor(string name, string symbol, uint8 decimals, uint256 cap)
ERC20Detailed(name, symbol, decimals) ERC20Capped(cap) ERC20Mintable() ERC20() public {
// Contract deployer (root) is automatically added as a minter in the MinterRole constructor
// We revert this in here in order to separate the responsibilities of Root and Minter
_removeMinter(msg.sender);
// Contract deployer (root) is automatically added as a pauser in the PauserRole constructor
// We revert this in here in order to separate the responsibilities of Root and Pauser
_removePauser(msg.sender);
root = msg.sender;
}
/*** ACCESS CONTROL MANAGEMENT ***/
/**
* This is particularly for the cases where there is a chance that the keys are compromised
* but no one has attacked/abused them yet, this function gives company the option to be on
* the safe side and start using another address.
* @dev Transfers control of the contract to a newRoot.
* @param _newRoot The address to transfer ownership to.
*/
function transferRoot(address _newRoot) external onlyRoot {
require(_newRoot != address(0));
root = _newRoot;
}
/**
* Designates a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to mint
*/
function addMinter(address account) public onlyRoot {
_addMinter(account);
}
/**
* Revokes a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to mint anymore
*/
function removeMinter(address account) external onlyRoot {
_removeMinter(account);
}
/**
* Designates a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to pause/unpause the token
*/
function addPauser(address account) public onlyRoot {
_addPauser(account);
}
/**
* Revokes a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to pause/unpause the token anymore
*/
function removePauser(address account) external onlyRoot {
_removePauser(account);
}
/**
* Designates a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to administer spenders and recipients
*/
function addAdmin(address account) external onlyRoot {
_addAdmin(account);
}
/**
* Revokes a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to administer spenders and recipients anymore
*/
function removeAdmin(address account) external onlyRoot {
_removeAdmin(account);
}
/**
* Designates a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will be able to send tokens
*/
function addSpender(address account) external onlyAdmin {
_addSpender(account);
}
/**
* Revokes a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will not be able to send tokens anymore
*/
function removeSpender(address account) external onlyAdmin {
_removeSpender(account);
}
/**
* Designates a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will be able to receive tokens
*/
function addRecipient(address account) external onlyAdmin {
_addRecipient(account);
}
/**
* Revokes a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will not be able to receive tokens anymore
*/
function removeRecipient(address account) external onlyAdmin {
_removeRecipient(account);
}
/*** MINTING ***/
/**
* @dev Function to mint tokens
* @param to The address that will receive the minted tokens. Must be an authorized spender.
* @param value The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address to, uint256 value) public onlyMinter returns (bool) {
require(isSpender(to), "To must be an authorized spender");
return super.mint(to, value);
}
/*** BURNING ***/
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* This function can only be called by an authorized minter.
* @param from address The address which you want to burn tokens from
* @param value uint256 The amount of tokens to be burned
*/
function burnFrom(address from, uint256 value) public onlyMinter {
_burnFrom(from, value);
}
/*** TRANSFER ***/
/**
* @dev Transfer token for a specified address
* This function can only be called by an authorized spender.
* @param to The address to transfer to. Must be an authorized recipient.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public onlySpender returns (bool) {
require(isRecipient(to), "To must be an authorized recipient");
return super.transfer(to, value);
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* This function can only be called by an authorized spender
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.approve(spender, value);
}
/**
* @dev Transfer tokens from one address to another
* This function can only be called by an authorized spender.
* @param from address The address which you want to send tokens from. Must be an authorized spender.
* @param to address The address which you want to transfer to. Must be an authorized recipient.
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(address from, address to, uint256 value) public onlySpender returns (bool) {
require(isSpender(from), "From must be an authorized spender");
require(isRecipient(to), "To must be an authorized recipient");
return super.transferFrom(from, to, value);
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.increaseAllowance(spender, addedValue);
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.decreaseAllowance(spender, subtractedValue);
}
/** RECOVERING ASSETS MISTAKENLY SENT TO CONTRACT **/
/**
* @dev Disallows direct send by setting a default function without the `payable` flag.
*/
function() external {
}
/**
* @dev Transfer all Ether held by the contract to the root.
*/
function reclaimEther() external onlyRoot {
root.transfer(address(this).balance);
}
/**
* @dev Reclaim all IERC20 compatible tokens
* @param _token IERC20 The address of the token contract
*/
function reclaimERC20Token(IERC20 _token) external onlyRoot {
uint256 balance = _token.balanceOf(this);
_token.safeTransfer(root, balance);
}
} | addPauser | function addPauser(address account) public onlyRoot {
_addPauser(account);
}
| /**
* Designates a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to pause/unpause the token
*/ | NatSpecMultiLine | v0.4.24+commit.e67f0147 | bzzr://0263f906d97e70bd1cb272121de9b39a9911143a89b3fba8e94bdad599b0af36 | {
"func_code_index": [
2833,
2928
]
} | 3,991 |
|||
Fider | contracts/Fider.sol | 0x715079d8285d91baab59055b47c17de4c5a378ac | Solidity | Fider | contract Fider is ERC20Detailed, ERC20Burnable, ERC20Capped, ERC20Pausable, AdminRole, SpenderRole, RecipientRole {
using SafeERC20 for IERC20;
address private root;
modifier onlyRoot() {
require(msg.sender == root, "This operation can only be performed by root account");
_;
}
constructor(string name, string symbol, uint8 decimals, uint256 cap)
ERC20Detailed(name, symbol, decimals) ERC20Capped(cap) ERC20Mintable() ERC20() public {
// Contract deployer (root) is automatically added as a minter in the MinterRole constructor
// We revert this in here in order to separate the responsibilities of Root and Minter
_removeMinter(msg.sender);
// Contract deployer (root) is automatically added as a pauser in the PauserRole constructor
// We revert this in here in order to separate the responsibilities of Root and Pauser
_removePauser(msg.sender);
root = msg.sender;
}
/*** ACCESS CONTROL MANAGEMENT ***/
/**
* This is particularly for the cases where there is a chance that the keys are compromised
* but no one has attacked/abused them yet, this function gives company the option to be on
* the safe side and start using another address.
* @dev Transfers control of the contract to a newRoot.
* @param _newRoot The address to transfer ownership to.
*/
function transferRoot(address _newRoot) external onlyRoot {
require(_newRoot != address(0));
root = _newRoot;
}
/**
* Designates a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to mint
*/
function addMinter(address account) public onlyRoot {
_addMinter(account);
}
/**
* Revokes a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to mint anymore
*/
function removeMinter(address account) external onlyRoot {
_removeMinter(account);
}
/**
* Designates a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to pause/unpause the token
*/
function addPauser(address account) public onlyRoot {
_addPauser(account);
}
/**
* Revokes a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to pause/unpause the token anymore
*/
function removePauser(address account) external onlyRoot {
_removePauser(account);
}
/**
* Designates a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to administer spenders and recipients
*/
function addAdmin(address account) external onlyRoot {
_addAdmin(account);
}
/**
* Revokes a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to administer spenders and recipients anymore
*/
function removeAdmin(address account) external onlyRoot {
_removeAdmin(account);
}
/**
* Designates a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will be able to send tokens
*/
function addSpender(address account) external onlyAdmin {
_addSpender(account);
}
/**
* Revokes a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will not be able to send tokens anymore
*/
function removeSpender(address account) external onlyAdmin {
_removeSpender(account);
}
/**
* Designates a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will be able to receive tokens
*/
function addRecipient(address account) external onlyAdmin {
_addRecipient(account);
}
/**
* Revokes a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will not be able to receive tokens anymore
*/
function removeRecipient(address account) external onlyAdmin {
_removeRecipient(account);
}
/*** MINTING ***/
/**
* @dev Function to mint tokens
* @param to The address that will receive the minted tokens. Must be an authorized spender.
* @param value The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address to, uint256 value) public onlyMinter returns (bool) {
require(isSpender(to), "To must be an authorized spender");
return super.mint(to, value);
}
/*** BURNING ***/
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* This function can only be called by an authorized minter.
* @param from address The address which you want to burn tokens from
* @param value uint256 The amount of tokens to be burned
*/
function burnFrom(address from, uint256 value) public onlyMinter {
_burnFrom(from, value);
}
/*** TRANSFER ***/
/**
* @dev Transfer token for a specified address
* This function can only be called by an authorized spender.
* @param to The address to transfer to. Must be an authorized recipient.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public onlySpender returns (bool) {
require(isRecipient(to), "To must be an authorized recipient");
return super.transfer(to, value);
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* This function can only be called by an authorized spender
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.approve(spender, value);
}
/**
* @dev Transfer tokens from one address to another
* This function can only be called by an authorized spender.
* @param from address The address which you want to send tokens from. Must be an authorized spender.
* @param to address The address which you want to transfer to. Must be an authorized recipient.
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(address from, address to, uint256 value) public onlySpender returns (bool) {
require(isSpender(from), "From must be an authorized spender");
require(isRecipient(to), "To must be an authorized recipient");
return super.transferFrom(from, to, value);
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.increaseAllowance(spender, addedValue);
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.decreaseAllowance(spender, subtractedValue);
}
/** RECOVERING ASSETS MISTAKENLY SENT TO CONTRACT **/
/**
* @dev Disallows direct send by setting a default function without the `payable` flag.
*/
function() external {
}
/**
* @dev Transfer all Ether held by the contract to the root.
*/
function reclaimEther() external onlyRoot {
root.transfer(address(this).balance);
}
/**
* @dev Reclaim all IERC20 compatible tokens
* @param _token IERC20 The address of the token contract
*/
function reclaimERC20Token(IERC20 _token) external onlyRoot {
uint256 balance = _token.balanceOf(this);
_token.safeTransfer(root, balance);
}
} | removePauser | function removePauser(address account) external onlyRoot {
_removePauser(account);
}
| /**
* Revokes a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to pause/unpause the token anymore
*/ | NatSpecMultiLine | v0.4.24+commit.e67f0147 | bzzr://0263f906d97e70bd1cb272121de9b39a9911143a89b3fba8e94bdad599b0af36 | {
"func_code_index": [
3329,
3432
]
} | 3,992 |
|||
Fider | contracts/Fider.sol | 0x715079d8285d91baab59055b47c17de4c5a378ac | Solidity | Fider | contract Fider is ERC20Detailed, ERC20Burnable, ERC20Capped, ERC20Pausable, AdminRole, SpenderRole, RecipientRole {
using SafeERC20 for IERC20;
address private root;
modifier onlyRoot() {
require(msg.sender == root, "This operation can only be performed by root account");
_;
}
constructor(string name, string symbol, uint8 decimals, uint256 cap)
ERC20Detailed(name, symbol, decimals) ERC20Capped(cap) ERC20Mintable() ERC20() public {
// Contract deployer (root) is automatically added as a minter in the MinterRole constructor
// We revert this in here in order to separate the responsibilities of Root and Minter
_removeMinter(msg.sender);
// Contract deployer (root) is automatically added as a pauser in the PauserRole constructor
// We revert this in here in order to separate the responsibilities of Root and Pauser
_removePauser(msg.sender);
root = msg.sender;
}
/*** ACCESS CONTROL MANAGEMENT ***/
/**
* This is particularly for the cases where there is a chance that the keys are compromised
* but no one has attacked/abused them yet, this function gives company the option to be on
* the safe side and start using another address.
* @dev Transfers control of the contract to a newRoot.
* @param _newRoot The address to transfer ownership to.
*/
function transferRoot(address _newRoot) external onlyRoot {
require(_newRoot != address(0));
root = _newRoot;
}
/**
* Designates a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to mint
*/
function addMinter(address account) public onlyRoot {
_addMinter(account);
}
/**
* Revokes a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to mint anymore
*/
function removeMinter(address account) external onlyRoot {
_removeMinter(account);
}
/**
* Designates a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to pause/unpause the token
*/
function addPauser(address account) public onlyRoot {
_addPauser(account);
}
/**
* Revokes a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to pause/unpause the token anymore
*/
function removePauser(address account) external onlyRoot {
_removePauser(account);
}
/**
* Designates a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to administer spenders and recipients
*/
function addAdmin(address account) external onlyRoot {
_addAdmin(account);
}
/**
* Revokes a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to administer spenders and recipients anymore
*/
function removeAdmin(address account) external onlyRoot {
_removeAdmin(account);
}
/**
* Designates a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will be able to send tokens
*/
function addSpender(address account) external onlyAdmin {
_addSpender(account);
}
/**
* Revokes a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will not be able to send tokens anymore
*/
function removeSpender(address account) external onlyAdmin {
_removeSpender(account);
}
/**
* Designates a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will be able to receive tokens
*/
function addRecipient(address account) external onlyAdmin {
_addRecipient(account);
}
/**
* Revokes a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will not be able to receive tokens anymore
*/
function removeRecipient(address account) external onlyAdmin {
_removeRecipient(account);
}
/*** MINTING ***/
/**
* @dev Function to mint tokens
* @param to The address that will receive the minted tokens. Must be an authorized spender.
* @param value The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address to, uint256 value) public onlyMinter returns (bool) {
require(isSpender(to), "To must be an authorized spender");
return super.mint(to, value);
}
/*** BURNING ***/
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* This function can only be called by an authorized minter.
* @param from address The address which you want to burn tokens from
* @param value uint256 The amount of tokens to be burned
*/
function burnFrom(address from, uint256 value) public onlyMinter {
_burnFrom(from, value);
}
/*** TRANSFER ***/
/**
* @dev Transfer token for a specified address
* This function can only be called by an authorized spender.
* @param to The address to transfer to. Must be an authorized recipient.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public onlySpender returns (bool) {
require(isRecipient(to), "To must be an authorized recipient");
return super.transfer(to, value);
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* This function can only be called by an authorized spender
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.approve(spender, value);
}
/**
* @dev Transfer tokens from one address to another
* This function can only be called by an authorized spender.
* @param from address The address which you want to send tokens from. Must be an authorized spender.
* @param to address The address which you want to transfer to. Must be an authorized recipient.
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(address from, address to, uint256 value) public onlySpender returns (bool) {
require(isSpender(from), "From must be an authorized spender");
require(isRecipient(to), "To must be an authorized recipient");
return super.transferFrom(from, to, value);
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.increaseAllowance(spender, addedValue);
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.decreaseAllowance(spender, subtractedValue);
}
/** RECOVERING ASSETS MISTAKENLY SENT TO CONTRACT **/
/**
* @dev Disallows direct send by setting a default function without the `payable` flag.
*/
function() external {
}
/**
* @dev Transfer all Ether held by the contract to the root.
*/
function reclaimEther() external onlyRoot {
root.transfer(address(this).balance);
}
/**
* @dev Reclaim all IERC20 compatible tokens
* @param _token IERC20 The address of the token contract
*/
function reclaimERC20Token(IERC20 _token) external onlyRoot {
uint256 balance = _token.balanceOf(this);
_token.safeTransfer(root, balance);
}
} | addAdmin | function addAdmin(address account) external onlyRoot {
_addAdmin(account);
}
| /**
* Designates a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to administer spenders and recipients
*/ | NatSpecMultiLine | v0.4.24+commit.e67f0147 | bzzr://0263f906d97e70bd1cb272121de9b39a9911143a89b3fba8e94bdad599b0af36 | {
"func_code_index": [
3883,
3978
]
} | 3,993 |
|||
Fider | contracts/Fider.sol | 0x715079d8285d91baab59055b47c17de4c5a378ac | Solidity | Fider | contract Fider is ERC20Detailed, ERC20Burnable, ERC20Capped, ERC20Pausable, AdminRole, SpenderRole, RecipientRole {
using SafeERC20 for IERC20;
address private root;
modifier onlyRoot() {
require(msg.sender == root, "This operation can only be performed by root account");
_;
}
constructor(string name, string symbol, uint8 decimals, uint256 cap)
ERC20Detailed(name, symbol, decimals) ERC20Capped(cap) ERC20Mintable() ERC20() public {
// Contract deployer (root) is automatically added as a minter in the MinterRole constructor
// We revert this in here in order to separate the responsibilities of Root and Minter
_removeMinter(msg.sender);
// Contract deployer (root) is automatically added as a pauser in the PauserRole constructor
// We revert this in here in order to separate the responsibilities of Root and Pauser
_removePauser(msg.sender);
root = msg.sender;
}
/*** ACCESS CONTROL MANAGEMENT ***/
/**
* This is particularly for the cases where there is a chance that the keys are compromised
* but no one has attacked/abused them yet, this function gives company the option to be on
* the safe side and start using another address.
* @dev Transfers control of the contract to a newRoot.
* @param _newRoot The address to transfer ownership to.
*/
function transferRoot(address _newRoot) external onlyRoot {
require(_newRoot != address(0));
root = _newRoot;
}
/**
* Designates a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to mint
*/
function addMinter(address account) public onlyRoot {
_addMinter(account);
}
/**
* Revokes a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to mint anymore
*/
function removeMinter(address account) external onlyRoot {
_removeMinter(account);
}
/**
* Designates a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to pause/unpause the token
*/
function addPauser(address account) public onlyRoot {
_addPauser(account);
}
/**
* Revokes a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to pause/unpause the token anymore
*/
function removePauser(address account) external onlyRoot {
_removePauser(account);
}
/**
* Designates a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to administer spenders and recipients
*/
function addAdmin(address account) external onlyRoot {
_addAdmin(account);
}
/**
* Revokes a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to administer spenders and recipients anymore
*/
function removeAdmin(address account) external onlyRoot {
_removeAdmin(account);
}
/**
* Designates a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will be able to send tokens
*/
function addSpender(address account) external onlyAdmin {
_addSpender(account);
}
/**
* Revokes a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will not be able to send tokens anymore
*/
function removeSpender(address account) external onlyAdmin {
_removeSpender(account);
}
/**
* Designates a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will be able to receive tokens
*/
function addRecipient(address account) external onlyAdmin {
_addRecipient(account);
}
/**
* Revokes a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will not be able to receive tokens anymore
*/
function removeRecipient(address account) external onlyAdmin {
_removeRecipient(account);
}
/*** MINTING ***/
/**
* @dev Function to mint tokens
* @param to The address that will receive the minted tokens. Must be an authorized spender.
* @param value The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address to, uint256 value) public onlyMinter returns (bool) {
require(isSpender(to), "To must be an authorized spender");
return super.mint(to, value);
}
/*** BURNING ***/
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* This function can only be called by an authorized minter.
* @param from address The address which you want to burn tokens from
* @param value uint256 The amount of tokens to be burned
*/
function burnFrom(address from, uint256 value) public onlyMinter {
_burnFrom(from, value);
}
/*** TRANSFER ***/
/**
* @dev Transfer token for a specified address
* This function can only be called by an authorized spender.
* @param to The address to transfer to. Must be an authorized recipient.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public onlySpender returns (bool) {
require(isRecipient(to), "To must be an authorized recipient");
return super.transfer(to, value);
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* This function can only be called by an authorized spender
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.approve(spender, value);
}
/**
* @dev Transfer tokens from one address to another
* This function can only be called by an authorized spender.
* @param from address The address which you want to send tokens from. Must be an authorized spender.
* @param to address The address which you want to transfer to. Must be an authorized recipient.
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(address from, address to, uint256 value) public onlySpender returns (bool) {
require(isSpender(from), "From must be an authorized spender");
require(isRecipient(to), "To must be an authorized recipient");
return super.transferFrom(from, to, value);
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.increaseAllowance(spender, addedValue);
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.decreaseAllowance(spender, subtractedValue);
}
/** RECOVERING ASSETS MISTAKENLY SENT TO CONTRACT **/
/**
* @dev Disallows direct send by setting a default function without the `payable` flag.
*/
function() external {
}
/**
* @dev Transfer all Ether held by the contract to the root.
*/
function reclaimEther() external onlyRoot {
root.transfer(address(this).balance);
}
/**
* @dev Reclaim all IERC20 compatible tokens
* @param _token IERC20 The address of the token contract
*/
function reclaimERC20Token(IERC20 _token) external onlyRoot {
uint256 balance = _token.balanceOf(this);
_token.safeTransfer(root, balance);
}
} | removeAdmin | function removeAdmin(address account) external onlyRoot {
_removeAdmin(account);
}
| /**
* Revokes a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to administer spenders and recipients anymore
*/ | NatSpecMultiLine | v0.4.24+commit.e67f0147 | bzzr://0263f906d97e70bd1cb272121de9b39a9911143a89b3fba8e94bdad599b0af36 | {
"func_code_index": [
4438,
4539
]
} | 3,994 |
|||
Fider | contracts/Fider.sol | 0x715079d8285d91baab59055b47c17de4c5a378ac | Solidity | Fider | contract Fider is ERC20Detailed, ERC20Burnable, ERC20Capped, ERC20Pausable, AdminRole, SpenderRole, RecipientRole {
using SafeERC20 for IERC20;
address private root;
modifier onlyRoot() {
require(msg.sender == root, "This operation can only be performed by root account");
_;
}
constructor(string name, string symbol, uint8 decimals, uint256 cap)
ERC20Detailed(name, symbol, decimals) ERC20Capped(cap) ERC20Mintable() ERC20() public {
// Contract deployer (root) is automatically added as a minter in the MinterRole constructor
// We revert this in here in order to separate the responsibilities of Root and Minter
_removeMinter(msg.sender);
// Contract deployer (root) is automatically added as a pauser in the PauserRole constructor
// We revert this in here in order to separate the responsibilities of Root and Pauser
_removePauser(msg.sender);
root = msg.sender;
}
/*** ACCESS CONTROL MANAGEMENT ***/
/**
* This is particularly for the cases where there is a chance that the keys are compromised
* but no one has attacked/abused them yet, this function gives company the option to be on
* the safe side and start using another address.
* @dev Transfers control of the contract to a newRoot.
* @param _newRoot The address to transfer ownership to.
*/
function transferRoot(address _newRoot) external onlyRoot {
require(_newRoot != address(0));
root = _newRoot;
}
/**
* Designates a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to mint
*/
function addMinter(address account) public onlyRoot {
_addMinter(account);
}
/**
* Revokes a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to mint anymore
*/
function removeMinter(address account) external onlyRoot {
_removeMinter(account);
}
/**
* Designates a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to pause/unpause the token
*/
function addPauser(address account) public onlyRoot {
_addPauser(account);
}
/**
* Revokes a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to pause/unpause the token anymore
*/
function removePauser(address account) external onlyRoot {
_removePauser(account);
}
/**
* Designates a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to administer spenders and recipients
*/
function addAdmin(address account) external onlyRoot {
_addAdmin(account);
}
/**
* Revokes a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to administer spenders and recipients anymore
*/
function removeAdmin(address account) external onlyRoot {
_removeAdmin(account);
}
/**
* Designates a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will be able to send tokens
*/
function addSpender(address account) external onlyAdmin {
_addSpender(account);
}
/**
* Revokes a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will not be able to send tokens anymore
*/
function removeSpender(address account) external onlyAdmin {
_removeSpender(account);
}
/**
* Designates a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will be able to receive tokens
*/
function addRecipient(address account) external onlyAdmin {
_addRecipient(account);
}
/**
* Revokes a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will not be able to receive tokens anymore
*/
function removeRecipient(address account) external onlyAdmin {
_removeRecipient(account);
}
/*** MINTING ***/
/**
* @dev Function to mint tokens
* @param to The address that will receive the minted tokens. Must be an authorized spender.
* @param value The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address to, uint256 value) public onlyMinter returns (bool) {
require(isSpender(to), "To must be an authorized spender");
return super.mint(to, value);
}
/*** BURNING ***/
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* This function can only be called by an authorized minter.
* @param from address The address which you want to burn tokens from
* @param value uint256 The amount of tokens to be burned
*/
function burnFrom(address from, uint256 value) public onlyMinter {
_burnFrom(from, value);
}
/*** TRANSFER ***/
/**
* @dev Transfer token for a specified address
* This function can only be called by an authorized spender.
* @param to The address to transfer to. Must be an authorized recipient.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public onlySpender returns (bool) {
require(isRecipient(to), "To must be an authorized recipient");
return super.transfer(to, value);
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* This function can only be called by an authorized spender
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.approve(spender, value);
}
/**
* @dev Transfer tokens from one address to another
* This function can only be called by an authorized spender.
* @param from address The address which you want to send tokens from. Must be an authorized spender.
* @param to address The address which you want to transfer to. Must be an authorized recipient.
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(address from, address to, uint256 value) public onlySpender returns (bool) {
require(isSpender(from), "From must be an authorized spender");
require(isRecipient(to), "To must be an authorized recipient");
return super.transferFrom(from, to, value);
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.increaseAllowance(spender, addedValue);
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.decreaseAllowance(spender, subtractedValue);
}
/** RECOVERING ASSETS MISTAKENLY SENT TO CONTRACT **/
/**
* @dev Disallows direct send by setting a default function without the `payable` flag.
*/
function() external {
}
/**
* @dev Transfer all Ether held by the contract to the root.
*/
function reclaimEther() external onlyRoot {
root.transfer(address(this).balance);
}
/**
* @dev Reclaim all IERC20 compatible tokens
* @param _token IERC20 The address of the token contract
*/
function reclaimERC20Token(IERC20 _token) external onlyRoot {
uint256 balance = _token.balanceOf(this);
_token.safeTransfer(root, balance);
}
} | addSpender | function addSpender(address account) external onlyAdmin {
_addSpender(account);
}
| /**
* Designates a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will be able to send tokens
*/ | NatSpecMultiLine | v0.4.24+commit.e67f0147 | bzzr://0263f906d97e70bd1cb272121de9b39a9911143a89b3fba8e94bdad599b0af36 | {
"func_code_index": [
4936,
5036
]
} | 3,995 |
|||
Fider | contracts/Fider.sol | 0x715079d8285d91baab59055b47c17de4c5a378ac | Solidity | Fider | contract Fider is ERC20Detailed, ERC20Burnable, ERC20Capped, ERC20Pausable, AdminRole, SpenderRole, RecipientRole {
using SafeERC20 for IERC20;
address private root;
modifier onlyRoot() {
require(msg.sender == root, "This operation can only be performed by root account");
_;
}
constructor(string name, string symbol, uint8 decimals, uint256 cap)
ERC20Detailed(name, symbol, decimals) ERC20Capped(cap) ERC20Mintable() ERC20() public {
// Contract deployer (root) is automatically added as a minter in the MinterRole constructor
// We revert this in here in order to separate the responsibilities of Root and Minter
_removeMinter(msg.sender);
// Contract deployer (root) is automatically added as a pauser in the PauserRole constructor
// We revert this in here in order to separate the responsibilities of Root and Pauser
_removePauser(msg.sender);
root = msg.sender;
}
/*** ACCESS CONTROL MANAGEMENT ***/
/**
* This is particularly for the cases where there is a chance that the keys are compromised
* but no one has attacked/abused them yet, this function gives company the option to be on
* the safe side and start using another address.
* @dev Transfers control of the contract to a newRoot.
* @param _newRoot The address to transfer ownership to.
*/
function transferRoot(address _newRoot) external onlyRoot {
require(_newRoot != address(0));
root = _newRoot;
}
/**
* Designates a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to mint
*/
function addMinter(address account) public onlyRoot {
_addMinter(account);
}
/**
* Revokes a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to mint anymore
*/
function removeMinter(address account) external onlyRoot {
_removeMinter(account);
}
/**
* Designates a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to pause/unpause the token
*/
function addPauser(address account) public onlyRoot {
_addPauser(account);
}
/**
* Revokes a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to pause/unpause the token anymore
*/
function removePauser(address account) external onlyRoot {
_removePauser(account);
}
/**
* Designates a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to administer spenders and recipients
*/
function addAdmin(address account) external onlyRoot {
_addAdmin(account);
}
/**
* Revokes a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to administer spenders and recipients anymore
*/
function removeAdmin(address account) external onlyRoot {
_removeAdmin(account);
}
/**
* Designates a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will be able to send tokens
*/
function addSpender(address account) external onlyAdmin {
_addSpender(account);
}
/**
* Revokes a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will not be able to send tokens anymore
*/
function removeSpender(address account) external onlyAdmin {
_removeSpender(account);
}
/**
* Designates a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will be able to receive tokens
*/
function addRecipient(address account) external onlyAdmin {
_addRecipient(account);
}
/**
* Revokes a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will not be able to receive tokens anymore
*/
function removeRecipient(address account) external onlyAdmin {
_removeRecipient(account);
}
/*** MINTING ***/
/**
* @dev Function to mint tokens
* @param to The address that will receive the minted tokens. Must be an authorized spender.
* @param value The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address to, uint256 value) public onlyMinter returns (bool) {
require(isSpender(to), "To must be an authorized spender");
return super.mint(to, value);
}
/*** BURNING ***/
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* This function can only be called by an authorized minter.
* @param from address The address which you want to burn tokens from
* @param value uint256 The amount of tokens to be burned
*/
function burnFrom(address from, uint256 value) public onlyMinter {
_burnFrom(from, value);
}
/*** TRANSFER ***/
/**
* @dev Transfer token for a specified address
* This function can only be called by an authorized spender.
* @param to The address to transfer to. Must be an authorized recipient.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public onlySpender returns (bool) {
require(isRecipient(to), "To must be an authorized recipient");
return super.transfer(to, value);
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* This function can only be called by an authorized spender
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.approve(spender, value);
}
/**
* @dev Transfer tokens from one address to another
* This function can only be called by an authorized spender.
* @param from address The address which you want to send tokens from. Must be an authorized spender.
* @param to address The address which you want to transfer to. Must be an authorized recipient.
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(address from, address to, uint256 value) public onlySpender returns (bool) {
require(isSpender(from), "From must be an authorized spender");
require(isRecipient(to), "To must be an authorized recipient");
return super.transferFrom(from, to, value);
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.increaseAllowance(spender, addedValue);
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.decreaseAllowance(spender, subtractedValue);
}
/** RECOVERING ASSETS MISTAKENLY SENT TO CONTRACT **/
/**
* @dev Disallows direct send by setting a default function without the `payable` flag.
*/
function() external {
}
/**
* @dev Transfer all Ether held by the contract to the root.
*/
function reclaimEther() external onlyRoot {
root.transfer(address(this).balance);
}
/**
* @dev Reclaim all IERC20 compatible tokens
* @param _token IERC20 The address of the token contract
*/
function reclaimERC20Token(IERC20 _token) external onlyRoot {
uint256 balance = _token.balanceOf(this);
_token.safeTransfer(root, balance);
}
} | removeSpender | function removeSpender(address account) external onlyAdmin {
_removeSpender(account);
}
| /**
* Revokes a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will not be able to send tokens anymore
*/ | NatSpecMultiLine | v0.4.24+commit.e67f0147 | bzzr://0263f906d97e70bd1cb272121de9b39a9911143a89b3fba8e94bdad599b0af36 | {
"func_code_index": [
5442,
5548
]
} | 3,996 |
|||
Fider | contracts/Fider.sol | 0x715079d8285d91baab59055b47c17de4c5a378ac | Solidity | Fider | contract Fider is ERC20Detailed, ERC20Burnable, ERC20Capped, ERC20Pausable, AdminRole, SpenderRole, RecipientRole {
using SafeERC20 for IERC20;
address private root;
modifier onlyRoot() {
require(msg.sender == root, "This operation can only be performed by root account");
_;
}
constructor(string name, string symbol, uint8 decimals, uint256 cap)
ERC20Detailed(name, symbol, decimals) ERC20Capped(cap) ERC20Mintable() ERC20() public {
// Contract deployer (root) is automatically added as a minter in the MinterRole constructor
// We revert this in here in order to separate the responsibilities of Root and Minter
_removeMinter(msg.sender);
// Contract deployer (root) is automatically added as a pauser in the PauserRole constructor
// We revert this in here in order to separate the responsibilities of Root and Pauser
_removePauser(msg.sender);
root = msg.sender;
}
/*** ACCESS CONTROL MANAGEMENT ***/
/**
* This is particularly for the cases where there is a chance that the keys are compromised
* but no one has attacked/abused them yet, this function gives company the option to be on
* the safe side and start using another address.
* @dev Transfers control of the contract to a newRoot.
* @param _newRoot The address to transfer ownership to.
*/
function transferRoot(address _newRoot) external onlyRoot {
require(_newRoot != address(0));
root = _newRoot;
}
/**
* Designates a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to mint
*/
function addMinter(address account) public onlyRoot {
_addMinter(account);
}
/**
* Revokes a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to mint anymore
*/
function removeMinter(address account) external onlyRoot {
_removeMinter(account);
}
/**
* Designates a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to pause/unpause the token
*/
function addPauser(address account) public onlyRoot {
_addPauser(account);
}
/**
* Revokes a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to pause/unpause the token anymore
*/
function removePauser(address account) external onlyRoot {
_removePauser(account);
}
/**
* Designates a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to administer spenders and recipients
*/
function addAdmin(address account) external onlyRoot {
_addAdmin(account);
}
/**
* Revokes a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to administer spenders and recipients anymore
*/
function removeAdmin(address account) external onlyRoot {
_removeAdmin(account);
}
/**
* Designates a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will be able to send tokens
*/
function addSpender(address account) external onlyAdmin {
_addSpender(account);
}
/**
* Revokes a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will not be able to send tokens anymore
*/
function removeSpender(address account) external onlyAdmin {
_removeSpender(account);
}
/**
* Designates a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will be able to receive tokens
*/
function addRecipient(address account) external onlyAdmin {
_addRecipient(account);
}
/**
* Revokes a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will not be able to receive tokens anymore
*/
function removeRecipient(address account) external onlyAdmin {
_removeRecipient(account);
}
/*** MINTING ***/
/**
* @dev Function to mint tokens
* @param to The address that will receive the minted tokens. Must be an authorized spender.
* @param value The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address to, uint256 value) public onlyMinter returns (bool) {
require(isSpender(to), "To must be an authorized spender");
return super.mint(to, value);
}
/*** BURNING ***/
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* This function can only be called by an authorized minter.
* @param from address The address which you want to burn tokens from
* @param value uint256 The amount of tokens to be burned
*/
function burnFrom(address from, uint256 value) public onlyMinter {
_burnFrom(from, value);
}
/*** TRANSFER ***/
/**
* @dev Transfer token for a specified address
* This function can only be called by an authorized spender.
* @param to The address to transfer to. Must be an authorized recipient.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public onlySpender returns (bool) {
require(isRecipient(to), "To must be an authorized recipient");
return super.transfer(to, value);
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* This function can only be called by an authorized spender
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.approve(spender, value);
}
/**
* @dev Transfer tokens from one address to another
* This function can only be called by an authorized spender.
* @param from address The address which you want to send tokens from. Must be an authorized spender.
* @param to address The address which you want to transfer to. Must be an authorized recipient.
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(address from, address to, uint256 value) public onlySpender returns (bool) {
require(isSpender(from), "From must be an authorized spender");
require(isRecipient(to), "To must be an authorized recipient");
return super.transferFrom(from, to, value);
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.increaseAllowance(spender, addedValue);
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.decreaseAllowance(spender, subtractedValue);
}
/** RECOVERING ASSETS MISTAKENLY SENT TO CONTRACT **/
/**
* @dev Disallows direct send by setting a default function without the `payable` flag.
*/
function() external {
}
/**
* @dev Transfer all Ether held by the contract to the root.
*/
function reclaimEther() external onlyRoot {
root.transfer(address(this).balance);
}
/**
* @dev Reclaim all IERC20 compatible tokens
* @param _token IERC20 The address of the token contract
*/
function reclaimERC20Token(IERC20 _token) external onlyRoot {
uint256 balance = _token.balanceOf(this);
_token.safeTransfer(root, balance);
}
} | addRecipient | function addRecipient(address account) external onlyAdmin {
_addRecipient(account);
}
| /**
* Designates a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will be able to receive tokens
*/ | NatSpecMultiLine | v0.4.24+commit.e67f0147 | bzzr://0263f906d97e70bd1cb272121de9b39a9911143a89b3fba8e94bdad599b0af36 | {
"func_code_index": [
5998,
6102
]
} | 3,997 |
|||
Fider | contracts/Fider.sol | 0x715079d8285d91baab59055b47c17de4c5a378ac | Solidity | Fider | contract Fider is ERC20Detailed, ERC20Burnable, ERC20Capped, ERC20Pausable, AdminRole, SpenderRole, RecipientRole {
using SafeERC20 for IERC20;
address private root;
modifier onlyRoot() {
require(msg.sender == root, "This operation can only be performed by root account");
_;
}
constructor(string name, string symbol, uint8 decimals, uint256 cap)
ERC20Detailed(name, symbol, decimals) ERC20Capped(cap) ERC20Mintable() ERC20() public {
// Contract deployer (root) is automatically added as a minter in the MinterRole constructor
// We revert this in here in order to separate the responsibilities of Root and Minter
_removeMinter(msg.sender);
// Contract deployer (root) is automatically added as a pauser in the PauserRole constructor
// We revert this in here in order to separate the responsibilities of Root and Pauser
_removePauser(msg.sender);
root = msg.sender;
}
/*** ACCESS CONTROL MANAGEMENT ***/
/**
* This is particularly for the cases where there is a chance that the keys are compromised
* but no one has attacked/abused them yet, this function gives company the option to be on
* the safe side and start using another address.
* @dev Transfers control of the contract to a newRoot.
* @param _newRoot The address to transfer ownership to.
*/
function transferRoot(address _newRoot) external onlyRoot {
require(_newRoot != address(0));
root = _newRoot;
}
/**
* Designates a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to mint
*/
function addMinter(address account) public onlyRoot {
_addMinter(account);
}
/**
* Revokes a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to mint anymore
*/
function removeMinter(address account) external onlyRoot {
_removeMinter(account);
}
/**
* Designates a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to pause/unpause the token
*/
function addPauser(address account) public onlyRoot {
_addPauser(account);
}
/**
* Revokes a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to pause/unpause the token anymore
*/
function removePauser(address account) external onlyRoot {
_removePauser(account);
}
/**
* Designates a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to administer spenders and recipients
*/
function addAdmin(address account) external onlyRoot {
_addAdmin(account);
}
/**
* Revokes a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to administer spenders and recipients anymore
*/
function removeAdmin(address account) external onlyRoot {
_removeAdmin(account);
}
/**
* Designates a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will be able to send tokens
*/
function addSpender(address account) external onlyAdmin {
_addSpender(account);
}
/**
* Revokes a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will not be able to send tokens anymore
*/
function removeSpender(address account) external onlyAdmin {
_removeSpender(account);
}
/**
* Designates a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will be able to receive tokens
*/
function addRecipient(address account) external onlyAdmin {
_addRecipient(account);
}
/**
* Revokes a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will not be able to receive tokens anymore
*/
function removeRecipient(address account) external onlyAdmin {
_removeRecipient(account);
}
/*** MINTING ***/
/**
* @dev Function to mint tokens
* @param to The address that will receive the minted tokens. Must be an authorized spender.
* @param value The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address to, uint256 value) public onlyMinter returns (bool) {
require(isSpender(to), "To must be an authorized spender");
return super.mint(to, value);
}
/*** BURNING ***/
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* This function can only be called by an authorized minter.
* @param from address The address which you want to burn tokens from
* @param value uint256 The amount of tokens to be burned
*/
function burnFrom(address from, uint256 value) public onlyMinter {
_burnFrom(from, value);
}
/*** TRANSFER ***/
/**
* @dev Transfer token for a specified address
* This function can only be called by an authorized spender.
* @param to The address to transfer to. Must be an authorized recipient.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public onlySpender returns (bool) {
require(isRecipient(to), "To must be an authorized recipient");
return super.transfer(to, value);
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* This function can only be called by an authorized spender
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.approve(spender, value);
}
/**
* @dev Transfer tokens from one address to another
* This function can only be called by an authorized spender.
* @param from address The address which you want to send tokens from. Must be an authorized spender.
* @param to address The address which you want to transfer to. Must be an authorized recipient.
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(address from, address to, uint256 value) public onlySpender returns (bool) {
require(isSpender(from), "From must be an authorized spender");
require(isRecipient(to), "To must be an authorized recipient");
return super.transferFrom(from, to, value);
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.increaseAllowance(spender, addedValue);
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.decreaseAllowance(spender, subtractedValue);
}
/** RECOVERING ASSETS MISTAKENLY SENT TO CONTRACT **/
/**
* @dev Disallows direct send by setting a default function without the `payable` flag.
*/
function() external {
}
/**
* @dev Transfer all Ether held by the contract to the root.
*/
function reclaimEther() external onlyRoot {
root.transfer(address(this).balance);
}
/**
* @dev Reclaim all IERC20 compatible tokens
* @param _token IERC20 The address of the token contract
*/
function reclaimERC20Token(IERC20 _token) external onlyRoot {
uint256 balance = _token.balanceOf(this);
_token.safeTransfer(root, balance);
}
} | removeRecipient | function removeRecipient(address account) external onlyAdmin {
_removeRecipient(account);
}
| /**
* Revokes a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will not be able to receive tokens anymore
*/ | NatSpecMultiLine | v0.4.24+commit.e67f0147 | bzzr://0263f906d97e70bd1cb272121de9b39a9911143a89b3fba8e94bdad599b0af36 | {
"func_code_index": [
6561,
6671
]
} | 3,998 |
|||
Fider | contracts/Fider.sol | 0x715079d8285d91baab59055b47c17de4c5a378ac | Solidity | Fider | contract Fider is ERC20Detailed, ERC20Burnable, ERC20Capped, ERC20Pausable, AdminRole, SpenderRole, RecipientRole {
using SafeERC20 for IERC20;
address private root;
modifier onlyRoot() {
require(msg.sender == root, "This operation can only be performed by root account");
_;
}
constructor(string name, string symbol, uint8 decimals, uint256 cap)
ERC20Detailed(name, symbol, decimals) ERC20Capped(cap) ERC20Mintable() ERC20() public {
// Contract deployer (root) is automatically added as a minter in the MinterRole constructor
// We revert this in here in order to separate the responsibilities of Root and Minter
_removeMinter(msg.sender);
// Contract deployer (root) is automatically added as a pauser in the PauserRole constructor
// We revert this in here in order to separate the responsibilities of Root and Pauser
_removePauser(msg.sender);
root = msg.sender;
}
/*** ACCESS CONTROL MANAGEMENT ***/
/**
* This is particularly for the cases where there is a chance that the keys are compromised
* but no one has attacked/abused them yet, this function gives company the option to be on
* the safe side and start using another address.
* @dev Transfers control of the contract to a newRoot.
* @param _newRoot The address to transfer ownership to.
*/
function transferRoot(address _newRoot) external onlyRoot {
require(_newRoot != address(0));
root = _newRoot;
}
/**
* Designates a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to mint
*/
function addMinter(address account) public onlyRoot {
_addMinter(account);
}
/**
* Revokes a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to mint anymore
*/
function removeMinter(address account) external onlyRoot {
_removeMinter(account);
}
/**
* Designates a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to pause/unpause the token
*/
function addPauser(address account) public onlyRoot {
_addPauser(account);
}
/**
* Revokes a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to pause/unpause the token anymore
*/
function removePauser(address account) external onlyRoot {
_removePauser(account);
}
/**
* Designates a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to administer spenders and recipients
*/
function addAdmin(address account) external onlyRoot {
_addAdmin(account);
}
/**
* Revokes a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to administer spenders and recipients anymore
*/
function removeAdmin(address account) external onlyRoot {
_removeAdmin(account);
}
/**
* Designates a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will be able to send tokens
*/
function addSpender(address account) external onlyAdmin {
_addSpender(account);
}
/**
* Revokes a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will not be able to send tokens anymore
*/
function removeSpender(address account) external onlyAdmin {
_removeSpender(account);
}
/**
* Designates a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will be able to receive tokens
*/
function addRecipient(address account) external onlyAdmin {
_addRecipient(account);
}
/**
* Revokes a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will not be able to receive tokens anymore
*/
function removeRecipient(address account) external onlyAdmin {
_removeRecipient(account);
}
/*** MINTING ***/
/**
* @dev Function to mint tokens
* @param to The address that will receive the minted tokens. Must be an authorized spender.
* @param value The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address to, uint256 value) public onlyMinter returns (bool) {
require(isSpender(to), "To must be an authorized spender");
return super.mint(to, value);
}
/*** BURNING ***/
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* This function can only be called by an authorized minter.
* @param from address The address which you want to burn tokens from
* @param value uint256 The amount of tokens to be burned
*/
function burnFrom(address from, uint256 value) public onlyMinter {
_burnFrom(from, value);
}
/*** TRANSFER ***/
/**
* @dev Transfer token for a specified address
* This function can only be called by an authorized spender.
* @param to The address to transfer to. Must be an authorized recipient.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public onlySpender returns (bool) {
require(isRecipient(to), "To must be an authorized recipient");
return super.transfer(to, value);
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* This function can only be called by an authorized spender
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.approve(spender, value);
}
/**
* @dev Transfer tokens from one address to another
* This function can only be called by an authorized spender.
* @param from address The address which you want to send tokens from. Must be an authorized spender.
* @param to address The address which you want to transfer to. Must be an authorized recipient.
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(address from, address to, uint256 value) public onlySpender returns (bool) {
require(isSpender(from), "From must be an authorized spender");
require(isRecipient(to), "To must be an authorized recipient");
return super.transferFrom(from, to, value);
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.increaseAllowance(spender, addedValue);
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.decreaseAllowance(spender, subtractedValue);
}
/** RECOVERING ASSETS MISTAKENLY SENT TO CONTRACT **/
/**
* @dev Disallows direct send by setting a default function without the `payable` flag.
*/
function() external {
}
/**
* @dev Transfer all Ether held by the contract to the root.
*/
function reclaimEther() external onlyRoot {
root.transfer(address(this).balance);
}
/**
* @dev Reclaim all IERC20 compatible tokens
* @param _token IERC20 The address of the token contract
*/
function reclaimERC20Token(IERC20 _token) external onlyRoot {
uint256 balance = _token.balanceOf(this);
_token.safeTransfer(root, balance);
}
} | mint | function mint(address to, uint256 value) public onlyMinter returns (bool) {
require(isSpender(to), "To must be an authorized spender");
return super.mint(to, value);
}
| /**
* @dev Function to mint tokens
* @param to The address that will receive the minted tokens. Must be an authorized spender.
* @param value The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/ | NatSpecMultiLine | v0.4.24+commit.e67f0147 | bzzr://0263f906d97e70bd1cb272121de9b39a9911143a89b3fba8e94bdad599b0af36 | {
"func_code_index": [
6972,
7167
]
} | 3,999 |
|||
Fider | contracts/Fider.sol | 0x715079d8285d91baab59055b47c17de4c5a378ac | Solidity | Fider | contract Fider is ERC20Detailed, ERC20Burnable, ERC20Capped, ERC20Pausable, AdminRole, SpenderRole, RecipientRole {
using SafeERC20 for IERC20;
address private root;
modifier onlyRoot() {
require(msg.sender == root, "This operation can only be performed by root account");
_;
}
constructor(string name, string symbol, uint8 decimals, uint256 cap)
ERC20Detailed(name, symbol, decimals) ERC20Capped(cap) ERC20Mintable() ERC20() public {
// Contract deployer (root) is automatically added as a minter in the MinterRole constructor
// We revert this in here in order to separate the responsibilities of Root and Minter
_removeMinter(msg.sender);
// Contract deployer (root) is automatically added as a pauser in the PauserRole constructor
// We revert this in here in order to separate the responsibilities of Root and Pauser
_removePauser(msg.sender);
root = msg.sender;
}
/*** ACCESS CONTROL MANAGEMENT ***/
/**
* This is particularly for the cases where there is a chance that the keys are compromised
* but no one has attacked/abused them yet, this function gives company the option to be on
* the safe side and start using another address.
* @dev Transfers control of the contract to a newRoot.
* @param _newRoot The address to transfer ownership to.
*/
function transferRoot(address _newRoot) external onlyRoot {
require(_newRoot != address(0));
root = _newRoot;
}
/**
* Designates a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to mint
*/
function addMinter(address account) public onlyRoot {
_addMinter(account);
}
/**
* Revokes a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to mint anymore
*/
function removeMinter(address account) external onlyRoot {
_removeMinter(account);
}
/**
* Designates a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to pause/unpause the token
*/
function addPauser(address account) public onlyRoot {
_addPauser(account);
}
/**
* Revokes a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to pause/unpause the token anymore
*/
function removePauser(address account) external onlyRoot {
_removePauser(account);
}
/**
* Designates a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to administer spenders and recipients
*/
function addAdmin(address account) external onlyRoot {
_addAdmin(account);
}
/**
* Revokes a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to administer spenders and recipients anymore
*/
function removeAdmin(address account) external onlyRoot {
_removeAdmin(account);
}
/**
* Designates a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will be able to send tokens
*/
function addSpender(address account) external onlyAdmin {
_addSpender(account);
}
/**
* Revokes a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will not be able to send tokens anymore
*/
function removeSpender(address account) external onlyAdmin {
_removeSpender(account);
}
/**
* Designates a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will be able to receive tokens
*/
function addRecipient(address account) external onlyAdmin {
_addRecipient(account);
}
/**
* Revokes a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will not be able to receive tokens anymore
*/
function removeRecipient(address account) external onlyAdmin {
_removeRecipient(account);
}
/*** MINTING ***/
/**
* @dev Function to mint tokens
* @param to The address that will receive the minted tokens. Must be an authorized spender.
* @param value The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address to, uint256 value) public onlyMinter returns (bool) {
require(isSpender(to), "To must be an authorized spender");
return super.mint(to, value);
}
/*** BURNING ***/
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* This function can only be called by an authorized minter.
* @param from address The address which you want to burn tokens from
* @param value uint256 The amount of tokens to be burned
*/
function burnFrom(address from, uint256 value) public onlyMinter {
_burnFrom(from, value);
}
/*** TRANSFER ***/
/**
* @dev Transfer token for a specified address
* This function can only be called by an authorized spender.
* @param to The address to transfer to. Must be an authorized recipient.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public onlySpender returns (bool) {
require(isRecipient(to), "To must be an authorized recipient");
return super.transfer(to, value);
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* This function can only be called by an authorized spender
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.approve(spender, value);
}
/**
* @dev Transfer tokens from one address to another
* This function can only be called by an authorized spender.
* @param from address The address which you want to send tokens from. Must be an authorized spender.
* @param to address The address which you want to transfer to. Must be an authorized recipient.
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(address from, address to, uint256 value) public onlySpender returns (bool) {
require(isSpender(from), "From must be an authorized spender");
require(isRecipient(to), "To must be an authorized recipient");
return super.transferFrom(from, to, value);
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.increaseAllowance(spender, addedValue);
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.decreaseAllowance(spender, subtractedValue);
}
/** RECOVERING ASSETS MISTAKENLY SENT TO CONTRACT **/
/**
* @dev Disallows direct send by setting a default function without the `payable` flag.
*/
function() external {
}
/**
* @dev Transfer all Ether held by the contract to the root.
*/
function reclaimEther() external onlyRoot {
root.transfer(address(this).balance);
}
/**
* @dev Reclaim all IERC20 compatible tokens
* @param _token IERC20 The address of the token contract
*/
function reclaimERC20Token(IERC20 _token) external onlyRoot {
uint256 balance = _token.balanceOf(this);
_token.safeTransfer(root, balance);
}
} | burnFrom | function burnFrom(address from, uint256 value) public onlyMinter {
_burnFrom(from, value);
}
| /**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* This function can only be called by an authorized minter.
* @param from address The address which you want to burn tokens from
* @param value uint256 The amount of tokens to be burned
*/ | NatSpecMultiLine | v0.4.24+commit.e67f0147 | bzzr://0263f906d97e70bd1cb272121de9b39a9911143a89b3fba8e94bdad599b0af36 | {
"func_code_index": [
7508,
7619
]
} | 4,000 |
|||
Fider | contracts/Fider.sol | 0x715079d8285d91baab59055b47c17de4c5a378ac | Solidity | Fider | contract Fider is ERC20Detailed, ERC20Burnable, ERC20Capped, ERC20Pausable, AdminRole, SpenderRole, RecipientRole {
using SafeERC20 for IERC20;
address private root;
modifier onlyRoot() {
require(msg.sender == root, "This operation can only be performed by root account");
_;
}
constructor(string name, string symbol, uint8 decimals, uint256 cap)
ERC20Detailed(name, symbol, decimals) ERC20Capped(cap) ERC20Mintable() ERC20() public {
// Contract deployer (root) is automatically added as a minter in the MinterRole constructor
// We revert this in here in order to separate the responsibilities of Root and Minter
_removeMinter(msg.sender);
// Contract deployer (root) is automatically added as a pauser in the PauserRole constructor
// We revert this in here in order to separate the responsibilities of Root and Pauser
_removePauser(msg.sender);
root = msg.sender;
}
/*** ACCESS CONTROL MANAGEMENT ***/
/**
* This is particularly for the cases where there is a chance that the keys are compromised
* but no one has attacked/abused them yet, this function gives company the option to be on
* the safe side and start using another address.
* @dev Transfers control of the contract to a newRoot.
* @param _newRoot The address to transfer ownership to.
*/
function transferRoot(address _newRoot) external onlyRoot {
require(_newRoot != address(0));
root = _newRoot;
}
/**
* Designates a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to mint
*/
function addMinter(address account) public onlyRoot {
_addMinter(account);
}
/**
* Revokes a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to mint anymore
*/
function removeMinter(address account) external onlyRoot {
_removeMinter(account);
}
/**
* Designates a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to pause/unpause the token
*/
function addPauser(address account) public onlyRoot {
_addPauser(account);
}
/**
* Revokes a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to pause/unpause the token anymore
*/
function removePauser(address account) external onlyRoot {
_removePauser(account);
}
/**
* Designates a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to administer spenders and recipients
*/
function addAdmin(address account) external onlyRoot {
_addAdmin(account);
}
/**
* Revokes a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to administer spenders and recipients anymore
*/
function removeAdmin(address account) external onlyRoot {
_removeAdmin(account);
}
/**
* Designates a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will be able to send tokens
*/
function addSpender(address account) external onlyAdmin {
_addSpender(account);
}
/**
* Revokes a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will not be able to send tokens anymore
*/
function removeSpender(address account) external onlyAdmin {
_removeSpender(account);
}
/**
* Designates a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will be able to receive tokens
*/
function addRecipient(address account) external onlyAdmin {
_addRecipient(account);
}
/**
* Revokes a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will not be able to receive tokens anymore
*/
function removeRecipient(address account) external onlyAdmin {
_removeRecipient(account);
}
/*** MINTING ***/
/**
* @dev Function to mint tokens
* @param to The address that will receive the minted tokens. Must be an authorized spender.
* @param value The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address to, uint256 value) public onlyMinter returns (bool) {
require(isSpender(to), "To must be an authorized spender");
return super.mint(to, value);
}
/*** BURNING ***/
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* This function can only be called by an authorized minter.
* @param from address The address which you want to burn tokens from
* @param value uint256 The amount of tokens to be burned
*/
function burnFrom(address from, uint256 value) public onlyMinter {
_burnFrom(from, value);
}
/*** TRANSFER ***/
/**
* @dev Transfer token for a specified address
* This function can only be called by an authorized spender.
* @param to The address to transfer to. Must be an authorized recipient.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public onlySpender returns (bool) {
require(isRecipient(to), "To must be an authorized recipient");
return super.transfer(to, value);
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* This function can only be called by an authorized spender
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.approve(spender, value);
}
/**
* @dev Transfer tokens from one address to another
* This function can only be called by an authorized spender.
* @param from address The address which you want to send tokens from. Must be an authorized spender.
* @param to address The address which you want to transfer to. Must be an authorized recipient.
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(address from, address to, uint256 value) public onlySpender returns (bool) {
require(isSpender(from), "From must be an authorized spender");
require(isRecipient(to), "To must be an authorized recipient");
return super.transferFrom(from, to, value);
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.increaseAllowance(spender, addedValue);
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.decreaseAllowance(spender, subtractedValue);
}
/** RECOVERING ASSETS MISTAKENLY SENT TO CONTRACT **/
/**
* @dev Disallows direct send by setting a default function without the `payable` flag.
*/
function() external {
}
/**
* @dev Transfer all Ether held by the contract to the root.
*/
function reclaimEther() external onlyRoot {
root.transfer(address(this).balance);
}
/**
* @dev Reclaim all IERC20 compatible tokens
* @param _token IERC20 The address of the token contract
*/
function reclaimERC20Token(IERC20 _token) external onlyRoot {
uint256 balance = _token.balanceOf(this);
_token.safeTransfer(root, balance);
}
} | transfer | function transfer(address to, uint256 value) public onlySpender returns (bool) {
require(isRecipient(to), "To must be an authorized recipient");
return super.transfer(to, value);
}
| /**
* @dev Transfer token for a specified address
* This function can only be called by an authorized spender.
* @param to The address to transfer to. Must be an authorized recipient.
* @param value The amount to be transferred.
*/ | NatSpecMultiLine | v0.4.24+commit.e67f0147 | bzzr://0263f906d97e70bd1cb272121de9b39a9911143a89b3fba8e94bdad599b0af36 | {
"func_code_index": [
7910,
8118
]
} | 4,001 |
|||
Fider | contracts/Fider.sol | 0x715079d8285d91baab59055b47c17de4c5a378ac | Solidity | Fider | contract Fider is ERC20Detailed, ERC20Burnable, ERC20Capped, ERC20Pausable, AdminRole, SpenderRole, RecipientRole {
using SafeERC20 for IERC20;
address private root;
modifier onlyRoot() {
require(msg.sender == root, "This operation can only be performed by root account");
_;
}
constructor(string name, string symbol, uint8 decimals, uint256 cap)
ERC20Detailed(name, symbol, decimals) ERC20Capped(cap) ERC20Mintable() ERC20() public {
// Contract deployer (root) is automatically added as a minter in the MinterRole constructor
// We revert this in here in order to separate the responsibilities of Root and Minter
_removeMinter(msg.sender);
// Contract deployer (root) is automatically added as a pauser in the PauserRole constructor
// We revert this in here in order to separate the responsibilities of Root and Pauser
_removePauser(msg.sender);
root = msg.sender;
}
/*** ACCESS CONTROL MANAGEMENT ***/
/**
* This is particularly for the cases where there is a chance that the keys are compromised
* but no one has attacked/abused them yet, this function gives company the option to be on
* the safe side and start using another address.
* @dev Transfers control of the contract to a newRoot.
* @param _newRoot The address to transfer ownership to.
*/
function transferRoot(address _newRoot) external onlyRoot {
require(_newRoot != address(0));
root = _newRoot;
}
/**
* Designates a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to mint
*/
function addMinter(address account) public onlyRoot {
_addMinter(account);
}
/**
* Revokes a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to mint anymore
*/
function removeMinter(address account) external onlyRoot {
_removeMinter(account);
}
/**
* Designates a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to pause/unpause the token
*/
function addPauser(address account) public onlyRoot {
_addPauser(account);
}
/**
* Revokes a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to pause/unpause the token anymore
*/
function removePauser(address account) external onlyRoot {
_removePauser(account);
}
/**
* Designates a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to administer spenders and recipients
*/
function addAdmin(address account) external onlyRoot {
_addAdmin(account);
}
/**
* Revokes a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to administer spenders and recipients anymore
*/
function removeAdmin(address account) external onlyRoot {
_removeAdmin(account);
}
/**
* Designates a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will be able to send tokens
*/
function addSpender(address account) external onlyAdmin {
_addSpender(account);
}
/**
* Revokes a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will not be able to send tokens anymore
*/
function removeSpender(address account) external onlyAdmin {
_removeSpender(account);
}
/**
* Designates a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will be able to receive tokens
*/
function addRecipient(address account) external onlyAdmin {
_addRecipient(account);
}
/**
* Revokes a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will not be able to receive tokens anymore
*/
function removeRecipient(address account) external onlyAdmin {
_removeRecipient(account);
}
/*** MINTING ***/
/**
* @dev Function to mint tokens
* @param to The address that will receive the minted tokens. Must be an authorized spender.
* @param value The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address to, uint256 value) public onlyMinter returns (bool) {
require(isSpender(to), "To must be an authorized spender");
return super.mint(to, value);
}
/*** BURNING ***/
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* This function can only be called by an authorized minter.
* @param from address The address which you want to burn tokens from
* @param value uint256 The amount of tokens to be burned
*/
function burnFrom(address from, uint256 value) public onlyMinter {
_burnFrom(from, value);
}
/*** TRANSFER ***/
/**
* @dev Transfer token for a specified address
* This function can only be called by an authorized spender.
* @param to The address to transfer to. Must be an authorized recipient.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public onlySpender returns (bool) {
require(isRecipient(to), "To must be an authorized recipient");
return super.transfer(to, value);
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* This function can only be called by an authorized spender
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.approve(spender, value);
}
/**
* @dev Transfer tokens from one address to another
* This function can only be called by an authorized spender.
* @param from address The address which you want to send tokens from. Must be an authorized spender.
* @param to address The address which you want to transfer to. Must be an authorized recipient.
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(address from, address to, uint256 value) public onlySpender returns (bool) {
require(isSpender(from), "From must be an authorized spender");
require(isRecipient(to), "To must be an authorized recipient");
return super.transferFrom(from, to, value);
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.increaseAllowance(spender, addedValue);
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.decreaseAllowance(spender, subtractedValue);
}
/** RECOVERING ASSETS MISTAKENLY SENT TO CONTRACT **/
/**
* @dev Disallows direct send by setting a default function without the `payable` flag.
*/
function() external {
}
/**
* @dev Transfer all Ether held by the contract to the root.
*/
function reclaimEther() external onlyRoot {
root.transfer(address(this).balance);
}
/**
* @dev Reclaim all IERC20 compatible tokens
* @param _token IERC20 The address of the token contract
*/
function reclaimERC20Token(IERC20 _token) external onlyRoot {
uint256 balance = _token.balanceOf(this);
_token.safeTransfer(root, balance);
}
} | approve | function approve(address spender, uint256 value) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.approve(spender, value);
}
| /**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* This function can only be called by an authorized spender
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param value The amount of tokens to be spent.
*/ | NatSpecMultiLine | v0.4.24+commit.e67f0147 | bzzr://0263f906d97e70bd1cb272121de9b39a9911143a89b3fba8e94bdad599b0af36 | {
"func_code_index": [
8858,
9113
]
} | 4,002 |
|||
Fider | contracts/Fider.sol | 0x715079d8285d91baab59055b47c17de4c5a378ac | Solidity | Fider | contract Fider is ERC20Detailed, ERC20Burnable, ERC20Capped, ERC20Pausable, AdminRole, SpenderRole, RecipientRole {
using SafeERC20 for IERC20;
address private root;
modifier onlyRoot() {
require(msg.sender == root, "This operation can only be performed by root account");
_;
}
constructor(string name, string symbol, uint8 decimals, uint256 cap)
ERC20Detailed(name, symbol, decimals) ERC20Capped(cap) ERC20Mintable() ERC20() public {
// Contract deployer (root) is automatically added as a minter in the MinterRole constructor
// We revert this in here in order to separate the responsibilities of Root and Minter
_removeMinter(msg.sender);
// Contract deployer (root) is automatically added as a pauser in the PauserRole constructor
// We revert this in here in order to separate the responsibilities of Root and Pauser
_removePauser(msg.sender);
root = msg.sender;
}
/*** ACCESS CONTROL MANAGEMENT ***/
/**
* This is particularly for the cases where there is a chance that the keys are compromised
* but no one has attacked/abused them yet, this function gives company the option to be on
* the safe side and start using another address.
* @dev Transfers control of the contract to a newRoot.
* @param _newRoot The address to transfer ownership to.
*/
function transferRoot(address _newRoot) external onlyRoot {
require(_newRoot != address(0));
root = _newRoot;
}
/**
* Designates a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to mint
*/
function addMinter(address account) public onlyRoot {
_addMinter(account);
}
/**
* Revokes a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to mint anymore
*/
function removeMinter(address account) external onlyRoot {
_removeMinter(account);
}
/**
* Designates a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to pause/unpause the token
*/
function addPauser(address account) public onlyRoot {
_addPauser(account);
}
/**
* Revokes a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to pause/unpause the token anymore
*/
function removePauser(address account) external onlyRoot {
_removePauser(account);
}
/**
* Designates a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to administer spenders and recipients
*/
function addAdmin(address account) external onlyRoot {
_addAdmin(account);
}
/**
* Revokes a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to administer spenders and recipients anymore
*/
function removeAdmin(address account) external onlyRoot {
_removeAdmin(account);
}
/**
* Designates a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will be able to send tokens
*/
function addSpender(address account) external onlyAdmin {
_addSpender(account);
}
/**
* Revokes a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will not be able to send tokens anymore
*/
function removeSpender(address account) external onlyAdmin {
_removeSpender(account);
}
/**
* Designates a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will be able to receive tokens
*/
function addRecipient(address account) external onlyAdmin {
_addRecipient(account);
}
/**
* Revokes a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will not be able to receive tokens anymore
*/
function removeRecipient(address account) external onlyAdmin {
_removeRecipient(account);
}
/*** MINTING ***/
/**
* @dev Function to mint tokens
* @param to The address that will receive the minted tokens. Must be an authorized spender.
* @param value The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address to, uint256 value) public onlyMinter returns (bool) {
require(isSpender(to), "To must be an authorized spender");
return super.mint(to, value);
}
/*** BURNING ***/
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* This function can only be called by an authorized minter.
* @param from address The address which you want to burn tokens from
* @param value uint256 The amount of tokens to be burned
*/
function burnFrom(address from, uint256 value) public onlyMinter {
_burnFrom(from, value);
}
/*** TRANSFER ***/
/**
* @dev Transfer token for a specified address
* This function can only be called by an authorized spender.
* @param to The address to transfer to. Must be an authorized recipient.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public onlySpender returns (bool) {
require(isRecipient(to), "To must be an authorized recipient");
return super.transfer(to, value);
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* This function can only be called by an authorized spender
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.approve(spender, value);
}
/**
* @dev Transfer tokens from one address to another
* This function can only be called by an authorized spender.
* @param from address The address which you want to send tokens from. Must be an authorized spender.
* @param to address The address which you want to transfer to. Must be an authorized recipient.
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(address from, address to, uint256 value) public onlySpender returns (bool) {
require(isSpender(from), "From must be an authorized spender");
require(isRecipient(to), "To must be an authorized recipient");
return super.transferFrom(from, to, value);
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.increaseAllowance(spender, addedValue);
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.decreaseAllowance(spender, subtractedValue);
}
/** RECOVERING ASSETS MISTAKENLY SENT TO CONTRACT **/
/**
* @dev Disallows direct send by setting a default function without the `payable` flag.
*/
function() external {
}
/**
* @dev Transfer all Ether held by the contract to the root.
*/
function reclaimEther() external onlyRoot {
root.transfer(address(this).balance);
}
/**
* @dev Reclaim all IERC20 compatible tokens
* @param _token IERC20 The address of the token contract
*/
function reclaimERC20Token(IERC20 _token) external onlyRoot {
uint256 balance = _token.balanceOf(this);
_token.safeTransfer(root, balance);
}
} | transferFrom | function transferFrom(address from, address to, uint256 value) public onlySpender returns (bool) {
require(isSpender(from), "From must be an authorized spender");
require(isRecipient(to), "To must be an authorized recipient");
return super.transferFrom(from, to, value);
}
| /**
* @dev Transfer tokens from one address to another
* This function can only be called by an authorized spender.
* @param from address The address which you want to send tokens from. Must be an authorized spender.
* @param to address The address which you want to transfer to. Must be an authorized recipient.
* @param value uint256 the amount of tokens to be transferred
*/ | NatSpecMultiLine | v0.4.24+commit.e67f0147 | bzzr://0263f906d97e70bd1cb272121de9b39a9911143a89b3fba8e94bdad599b0af36 | {
"func_code_index": [
9529,
9838
]
} | 4,003 |
|||
Fider | contracts/Fider.sol | 0x715079d8285d91baab59055b47c17de4c5a378ac | Solidity | Fider | contract Fider is ERC20Detailed, ERC20Burnable, ERC20Capped, ERC20Pausable, AdminRole, SpenderRole, RecipientRole {
using SafeERC20 for IERC20;
address private root;
modifier onlyRoot() {
require(msg.sender == root, "This operation can only be performed by root account");
_;
}
constructor(string name, string symbol, uint8 decimals, uint256 cap)
ERC20Detailed(name, symbol, decimals) ERC20Capped(cap) ERC20Mintable() ERC20() public {
// Contract deployer (root) is automatically added as a minter in the MinterRole constructor
// We revert this in here in order to separate the responsibilities of Root and Minter
_removeMinter(msg.sender);
// Contract deployer (root) is automatically added as a pauser in the PauserRole constructor
// We revert this in here in order to separate the responsibilities of Root and Pauser
_removePauser(msg.sender);
root = msg.sender;
}
/*** ACCESS CONTROL MANAGEMENT ***/
/**
* This is particularly for the cases where there is a chance that the keys are compromised
* but no one has attacked/abused them yet, this function gives company the option to be on
* the safe side and start using another address.
* @dev Transfers control of the contract to a newRoot.
* @param _newRoot The address to transfer ownership to.
*/
function transferRoot(address _newRoot) external onlyRoot {
require(_newRoot != address(0));
root = _newRoot;
}
/**
* Designates a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to mint
*/
function addMinter(address account) public onlyRoot {
_addMinter(account);
}
/**
* Revokes a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to mint anymore
*/
function removeMinter(address account) external onlyRoot {
_removeMinter(account);
}
/**
* Designates a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to pause/unpause the token
*/
function addPauser(address account) public onlyRoot {
_addPauser(account);
}
/**
* Revokes a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to pause/unpause the token anymore
*/
function removePauser(address account) external onlyRoot {
_removePauser(account);
}
/**
* Designates a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to administer spenders and recipients
*/
function addAdmin(address account) external onlyRoot {
_addAdmin(account);
}
/**
* Revokes a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to administer spenders and recipients anymore
*/
function removeAdmin(address account) external onlyRoot {
_removeAdmin(account);
}
/**
* Designates a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will be able to send tokens
*/
function addSpender(address account) external onlyAdmin {
_addSpender(account);
}
/**
* Revokes a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will not be able to send tokens anymore
*/
function removeSpender(address account) external onlyAdmin {
_removeSpender(account);
}
/**
* Designates a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will be able to receive tokens
*/
function addRecipient(address account) external onlyAdmin {
_addRecipient(account);
}
/**
* Revokes a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will not be able to receive tokens anymore
*/
function removeRecipient(address account) external onlyAdmin {
_removeRecipient(account);
}
/*** MINTING ***/
/**
* @dev Function to mint tokens
* @param to The address that will receive the minted tokens. Must be an authorized spender.
* @param value The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address to, uint256 value) public onlyMinter returns (bool) {
require(isSpender(to), "To must be an authorized spender");
return super.mint(to, value);
}
/*** BURNING ***/
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* This function can only be called by an authorized minter.
* @param from address The address which you want to burn tokens from
* @param value uint256 The amount of tokens to be burned
*/
function burnFrom(address from, uint256 value) public onlyMinter {
_burnFrom(from, value);
}
/*** TRANSFER ***/
/**
* @dev Transfer token for a specified address
* This function can only be called by an authorized spender.
* @param to The address to transfer to. Must be an authorized recipient.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public onlySpender returns (bool) {
require(isRecipient(to), "To must be an authorized recipient");
return super.transfer(to, value);
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* This function can only be called by an authorized spender
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.approve(spender, value);
}
/**
* @dev Transfer tokens from one address to another
* This function can only be called by an authorized spender.
* @param from address The address which you want to send tokens from. Must be an authorized spender.
* @param to address The address which you want to transfer to. Must be an authorized recipient.
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(address from, address to, uint256 value) public onlySpender returns (bool) {
require(isSpender(from), "From must be an authorized spender");
require(isRecipient(to), "To must be an authorized recipient");
return super.transferFrom(from, to, value);
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.increaseAllowance(spender, addedValue);
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.decreaseAllowance(spender, subtractedValue);
}
/** RECOVERING ASSETS MISTAKENLY SENT TO CONTRACT **/
/**
* @dev Disallows direct send by setting a default function without the `payable` flag.
*/
function() external {
}
/**
* @dev Transfer all Ether held by the contract to the root.
*/
function reclaimEther() external onlyRoot {
root.transfer(address(this).balance);
}
/**
* @dev Reclaim all IERC20 compatible tokens
* @param _token IERC20 The address of the token contract
*/
function reclaimERC20Token(IERC20 _token) external onlyRoot {
uint256 balance = _token.balanceOf(this);
_token.safeTransfer(root, balance);
}
} | increaseAllowance | function increaseAllowance(address spender, uint256 addedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.increaseAllowance(spender, addedValue);
}
| /**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param addedValue The amount of tokens to increase the allowance by.
*/ | NatSpecMultiLine | v0.4.24+commit.e67f0147 | bzzr://0263f906d97e70bd1cb272121de9b39a9911143a89b3fba8e94bdad599b0af36 | {
"func_code_index": [
10414,
10699
]
} | 4,004 |
|||
Fider | contracts/Fider.sol | 0x715079d8285d91baab59055b47c17de4c5a378ac | Solidity | Fider | contract Fider is ERC20Detailed, ERC20Burnable, ERC20Capped, ERC20Pausable, AdminRole, SpenderRole, RecipientRole {
using SafeERC20 for IERC20;
address private root;
modifier onlyRoot() {
require(msg.sender == root, "This operation can only be performed by root account");
_;
}
constructor(string name, string symbol, uint8 decimals, uint256 cap)
ERC20Detailed(name, symbol, decimals) ERC20Capped(cap) ERC20Mintable() ERC20() public {
// Contract deployer (root) is automatically added as a minter in the MinterRole constructor
// We revert this in here in order to separate the responsibilities of Root and Minter
_removeMinter(msg.sender);
// Contract deployer (root) is automatically added as a pauser in the PauserRole constructor
// We revert this in here in order to separate the responsibilities of Root and Pauser
_removePauser(msg.sender);
root = msg.sender;
}
/*** ACCESS CONTROL MANAGEMENT ***/
/**
* This is particularly for the cases where there is a chance that the keys are compromised
* but no one has attacked/abused them yet, this function gives company the option to be on
* the safe side and start using another address.
* @dev Transfers control of the contract to a newRoot.
* @param _newRoot The address to transfer ownership to.
*/
function transferRoot(address _newRoot) external onlyRoot {
require(_newRoot != address(0));
root = _newRoot;
}
/**
* Designates a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to mint
*/
function addMinter(address account) public onlyRoot {
_addMinter(account);
}
/**
* Revokes a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to mint anymore
*/
function removeMinter(address account) external onlyRoot {
_removeMinter(account);
}
/**
* Designates a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to pause/unpause the token
*/
function addPauser(address account) public onlyRoot {
_addPauser(account);
}
/**
* Revokes a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to pause/unpause the token anymore
*/
function removePauser(address account) external onlyRoot {
_removePauser(account);
}
/**
* Designates a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to administer spenders and recipients
*/
function addAdmin(address account) external onlyRoot {
_addAdmin(account);
}
/**
* Revokes a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to administer spenders and recipients anymore
*/
function removeAdmin(address account) external onlyRoot {
_removeAdmin(account);
}
/**
* Designates a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will be able to send tokens
*/
function addSpender(address account) external onlyAdmin {
_addSpender(account);
}
/**
* Revokes a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will not be able to send tokens anymore
*/
function removeSpender(address account) external onlyAdmin {
_removeSpender(account);
}
/**
* Designates a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will be able to receive tokens
*/
function addRecipient(address account) external onlyAdmin {
_addRecipient(account);
}
/**
* Revokes a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will not be able to receive tokens anymore
*/
function removeRecipient(address account) external onlyAdmin {
_removeRecipient(account);
}
/*** MINTING ***/
/**
* @dev Function to mint tokens
* @param to The address that will receive the minted tokens. Must be an authorized spender.
* @param value The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address to, uint256 value) public onlyMinter returns (bool) {
require(isSpender(to), "To must be an authorized spender");
return super.mint(to, value);
}
/*** BURNING ***/
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* This function can only be called by an authorized minter.
* @param from address The address which you want to burn tokens from
* @param value uint256 The amount of tokens to be burned
*/
function burnFrom(address from, uint256 value) public onlyMinter {
_burnFrom(from, value);
}
/*** TRANSFER ***/
/**
* @dev Transfer token for a specified address
* This function can only be called by an authorized spender.
* @param to The address to transfer to. Must be an authorized recipient.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public onlySpender returns (bool) {
require(isRecipient(to), "To must be an authorized recipient");
return super.transfer(to, value);
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* This function can only be called by an authorized spender
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.approve(spender, value);
}
/**
* @dev Transfer tokens from one address to another
* This function can only be called by an authorized spender.
* @param from address The address which you want to send tokens from. Must be an authorized spender.
* @param to address The address which you want to transfer to. Must be an authorized recipient.
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(address from, address to, uint256 value) public onlySpender returns (bool) {
require(isSpender(from), "From must be an authorized spender");
require(isRecipient(to), "To must be an authorized recipient");
return super.transferFrom(from, to, value);
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.increaseAllowance(spender, addedValue);
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.decreaseAllowance(spender, subtractedValue);
}
/** RECOVERING ASSETS MISTAKENLY SENT TO CONTRACT **/
/**
* @dev Disallows direct send by setting a default function without the `payable` flag.
*/
function() external {
}
/**
* @dev Transfer all Ether held by the contract to the root.
*/
function reclaimEther() external onlyRoot {
root.transfer(address(this).balance);
}
/**
* @dev Reclaim all IERC20 compatible tokens
* @param _token IERC20 The address of the token contract
*/
function reclaimERC20Token(IERC20 _token) external onlyRoot {
uint256 balance = _token.balanceOf(this);
_token.safeTransfer(root, balance);
}
} | decreaseAllowance | function decreaseAllowance(address spender, uint256 subtractedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.decreaseAllowance(spender, subtractedValue);
}
| /**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/ | NatSpecMultiLine | v0.4.24+commit.e67f0147 | bzzr://0263f906d97e70bd1cb272121de9b39a9911143a89b3fba8e94bdad599b0af36 | {
"func_code_index": [
11289,
11584
]
} | 4,005 |
|||
Fider | contracts/Fider.sol | 0x715079d8285d91baab59055b47c17de4c5a378ac | Solidity | Fider | contract Fider is ERC20Detailed, ERC20Burnable, ERC20Capped, ERC20Pausable, AdminRole, SpenderRole, RecipientRole {
using SafeERC20 for IERC20;
address private root;
modifier onlyRoot() {
require(msg.sender == root, "This operation can only be performed by root account");
_;
}
constructor(string name, string symbol, uint8 decimals, uint256 cap)
ERC20Detailed(name, symbol, decimals) ERC20Capped(cap) ERC20Mintable() ERC20() public {
// Contract deployer (root) is automatically added as a minter in the MinterRole constructor
// We revert this in here in order to separate the responsibilities of Root and Minter
_removeMinter(msg.sender);
// Contract deployer (root) is automatically added as a pauser in the PauserRole constructor
// We revert this in here in order to separate the responsibilities of Root and Pauser
_removePauser(msg.sender);
root = msg.sender;
}
/*** ACCESS CONTROL MANAGEMENT ***/
/**
* This is particularly for the cases where there is a chance that the keys are compromised
* but no one has attacked/abused them yet, this function gives company the option to be on
* the safe side and start using another address.
* @dev Transfers control of the contract to a newRoot.
* @param _newRoot The address to transfer ownership to.
*/
function transferRoot(address _newRoot) external onlyRoot {
require(_newRoot != address(0));
root = _newRoot;
}
/**
* Designates a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to mint
*/
function addMinter(address account) public onlyRoot {
_addMinter(account);
}
/**
* Revokes a given account as an authorized Minter, where minter are the only ones who
* can call the mint function to create new tokens.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to mint anymore
*/
function removeMinter(address account) external onlyRoot {
_removeMinter(account);
}
/**
* Designates a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to pause/unpause the token
*/
function addPauser(address account) public onlyRoot {
_addPauser(account);
}
/**
* Revokes a given account as an authorized Pauser, where pausers are the only ones who
* can call the pause and unpause functions to freeze or unfreeze the transfer functions.
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to pause/unpause the token anymore
*/
function removePauser(address account) external onlyRoot {
_removePauser(account);
}
/**
* Designates a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will be able to administer spenders and recipients
*/
function addAdmin(address account) external onlyRoot {
_addAdmin(account);
}
/**
* Revokes a given account as an authorized Admin, where admins are the only ones who
* can call the addRecipient, removeRecipient, addSpender and removeSpender functions
* to authorize or revoke spenders and recipients
* This function can only be called by Root, which is the account who deployed the contract.
* @param account address The account who will not be able to administer spenders and recipients anymore
*/
function removeAdmin(address account) external onlyRoot {
_removeAdmin(account);
}
/**
* Designates a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will be able to send tokens
*/
function addSpender(address account) external onlyAdmin {
_addSpender(account);
}
/**
* Revokes a given account as an authorized Spender, where spenders are the only ones who
* can call the transfer, approve, increaseAllowance, decreaseAllowance and transferFrom functions
* to send tokens to other accounts
* This function can only be called by an authorized admin
* @param account address The account who will not be able to send tokens anymore
*/
function removeSpender(address account) external onlyAdmin {
_removeSpender(account);
}
/**
* Designates a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will be able to receive tokens
*/
function addRecipient(address account) external onlyAdmin {
_addRecipient(account);
}
/**
* Revokes a given account as an authorized Recipient, where recipients are the only ones who
* can be on the receiving end of a transfer, either through a normal transfer, or through a third
* party payment process (approve/transferFrom or increaseAllowance/transferFrom)
* This function can only be called by an authorized admin
* @param account address The account who will not be able to receive tokens anymore
*/
function removeRecipient(address account) external onlyAdmin {
_removeRecipient(account);
}
/*** MINTING ***/
/**
* @dev Function to mint tokens
* @param to The address that will receive the minted tokens. Must be an authorized spender.
* @param value The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address to, uint256 value) public onlyMinter returns (bool) {
require(isSpender(to), "To must be an authorized spender");
return super.mint(to, value);
}
/*** BURNING ***/
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* This function can only be called by an authorized minter.
* @param from address The address which you want to burn tokens from
* @param value uint256 The amount of tokens to be burned
*/
function burnFrom(address from, uint256 value) public onlyMinter {
_burnFrom(from, value);
}
/*** TRANSFER ***/
/**
* @dev Transfer token for a specified address
* This function can only be called by an authorized spender.
* @param to The address to transfer to. Must be an authorized recipient.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public onlySpender returns (bool) {
require(isRecipient(to), "To must be an authorized recipient");
return super.transfer(to, value);
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* This function can only be called by an authorized spender
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.approve(spender, value);
}
/**
* @dev Transfer tokens from one address to another
* This function can only be called by an authorized spender.
* @param from address The address which you want to send tokens from. Must be an authorized spender.
* @param to address The address which you want to transfer to. Must be an authorized recipient.
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(address from, address to, uint256 value) public onlySpender returns (bool) {
require(isSpender(from), "From must be an authorized spender");
require(isRecipient(to), "To must be an authorized recipient");
return super.transferFrom(from, to, value);
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.increaseAllowance(spender, addedValue);
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* This function can only be called by an authorized spender.
* @param spender The address which will spend the funds. Must be an authorized spender or minter.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public onlySpender returns (bool) {
require(isSpender(spender) || isMinter(spender), "Spender must be an authorized spender or a minter");
return super.decreaseAllowance(spender, subtractedValue);
}
/** RECOVERING ASSETS MISTAKENLY SENT TO CONTRACT **/
/**
* @dev Disallows direct send by setting a default function without the `payable` flag.
*/
function() external {
}
/**
* @dev Transfer all Ether held by the contract to the root.
*/
function reclaimEther() external onlyRoot {
root.transfer(address(this).balance);
}
/**
* @dev Reclaim all IERC20 compatible tokens
* @param _token IERC20 The address of the token contract
*/
function reclaimERC20Token(IERC20 _token) external onlyRoot {
uint256 balance = _token.balanceOf(this);
_token.safeTransfer(root, balance);
}
} | function() external {
}
| /**
* @dev Disallows direct send by setting a default function without the `payable` flag.
*/ | NatSpecMultiLine | v0.4.24+commit.e67f0147 | bzzr://0263f906d97e70bd1cb272121de9b39a9911143a89b3fba8e94bdad599b0af36 | {
"func_code_index": [
11757,
11790
]
} | 4,006 |
Subsets and Splits
No saved queries yet
Save your SQL queries to embed, download, and access them later. Queries will appear here once saved.