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
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AkulaInu | openzeppelin-solidity\contracts\utils\Address.sol | 0x4f8ed47f839e079be0a79b95d0fd5473c90804d0 | 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) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @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 | v0.6.2+commit.bacdbe57 | None | ipfs://36acfd850d1a2fda2fc855c17ea6964ae99204c9d3a51b35ba8958489722da1b | {
"func_code_index": [
2160,
2562
]
} | 7,100 |
AkulaInu | openzeppelin-solidity\contracts\utils\Address.sol | 0x4f8ed47f839e079be0a79b95d0fd5473c90804d0 | 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) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @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 | v0.6.2+commit.bacdbe57 | None | ipfs://36acfd850d1a2fda2fc855c17ea6964ae99204c9d3a51b35ba8958489722da1b | {
"func_code_index": [
3318,
3498
]
} | 7,101 |
AkulaInu | openzeppelin-solidity\contracts\utils\Address.sol | 0x4f8ed47f839e079be0a79b95d0fd5473c90804d0 | 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) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @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 | v0.6.2+commit.bacdbe57 | None | ipfs://36acfd850d1a2fda2fc855c17ea6964ae99204c9d3a51b35ba8958489722da1b | {
"func_code_index": [
3723,
3924
]
} | 7,102 |
AkulaInu | openzeppelin-solidity\contracts\utils\Address.sol | 0x4f8ed47f839e079be0a79b95d0fd5473c90804d0 | 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) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @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 | v0.6.2+commit.bacdbe57 | None | ipfs://36acfd850d1a2fda2fc855c17ea6964ae99204c9d3a51b35ba8958489722da1b | {
"func_code_index": [
4294,
4525
]
} | 7,103 |
AkulaInu | openzeppelin-solidity\contracts\utils\Address.sol | 0x4f8ed47f839e079be0a79b95d0fd5473c90804d0 | 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) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @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 | v0.6.2+commit.bacdbe57 | None | ipfs://36acfd850d1a2fda2fc855c17ea6964ae99204c9d3a51b35ba8958489722da1b | {
"func_code_index": [
4776,
5097
]
} | 7,104 |
AkulaInu | openzeppelin-solidity\contracts\utils\Address.sol | 0x4f8ed47f839e079be0a79b95d0fd5473c90804d0 | Solidity | Ownable | contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
} | /**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/ | NatSpecMultiLine | owner | function owner() public view returns (address) {
return _owner;
}
| /**
* @dev Returns the address of the current owner.
*/ | NatSpecMultiLine | v0.6.2+commit.bacdbe57 | None | ipfs://36acfd850d1a2fda2fc855c17ea6964ae99204c9d3a51b35ba8958489722da1b | {
"func_code_index": [
497,
581
]
} | 7,105 |
AkulaInu | openzeppelin-solidity\contracts\utils\Address.sol | 0x4f8ed47f839e079be0a79b95d0fd5473c90804d0 | Solidity | Ownable | contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
} | /**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/ | NatSpecMultiLine | renounceOwnership | function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
| /**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/ | NatSpecMultiLine | v0.6.2+commit.bacdbe57 | None | ipfs://36acfd850d1a2fda2fc855c17ea6964ae99204c9d3a51b35ba8958489722da1b | {
"func_code_index": [
1139,
1292
]
} | 7,106 |
AkulaInu | openzeppelin-solidity\contracts\utils\Address.sol | 0x4f8ed47f839e079be0a79b95d0fd5473c90804d0 | Solidity | Ownable | contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
} | /**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/ | NatSpecMultiLine | transferOwnership | function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
| /**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/ | NatSpecMultiLine | v0.6.2+commit.bacdbe57 | None | ipfs://36acfd850d1a2fda2fc855c17ea6964ae99204c9d3a51b35ba8958489722da1b | {
"func_code_index": [
1442,
1691
]
} | 7,107 |
ArbitrumValidator | src/v0.8/dev/ArbitrumValidator.sol | 0x29cd92f343f9d81e74fae28913b038a81005b46f | Solidity | ArbitrumValidator | contract ArbitrumValidator is TypeAndVersionInterface, AggregatorValidatorInterface, SimpleWriteAccessController {
// Config for L1 -> L2 `createRetryableTicket` call
struct GasConfiguration {
uint256 maxSubmissionCost;
uint256 maxGasPrice;
uint256 gasCostL2;
uint256 gasLimitL2;
address refundableAddress;
}
/// @dev Follows: https://eips.ethereum.org/EIPS/eip-1967
address constant private FLAG_ARBITRUM_SEQ_OFFLINE = address(bytes20(bytes32(uint256(keccak256("chainlink.flags.arbitrum-seq-offline")) - 1)));
bytes constant private CALL_RAISE_FLAG = abi.encodeWithSelector(FlagsInterface.raiseFlag.selector, FLAG_ARBITRUM_SEQ_OFFLINE);
bytes constant private CALL_LOWER_FLAG = abi.encodeWithSelector(FlagsInterface.lowerFlag.selector, FLAG_ARBITRUM_SEQ_OFFLINE);
address private s_l2FlagsAddress;
IInbox private s_inbox;
AccessControllerInterface private s_gasConfigAccessController;
GasConfiguration private s_gasConfig;
/**
* @notice emitted when a new gas configuration is set
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param refundableAddress address where gas excess on L2 will be sent
*/
event GasConfigurationSet(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address indexed refundableAddress
);
/**
* @notice emitted when a new gas access-control contract is set
* @param previous the address prior to the current setting
* @param current the address of the new access-control contract
*/
event GasAccessControllerSet(
address indexed previous,
address indexed current
);
/**
* @param inboxAddress address of the Arbitrum Inbox L1 contract
* @param l2FlagsAddress address of the Chainlink L2 Flags contract
* @param gasConfigAccessControllerAddress address of the access controller for managing gas price on Arbitrum
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param gasLimitL2 gas limit for immediate L2 execution attempt. A value around 1M should be sufficient
* @param refundableAddress address where gas excess on L2 will be sent
*/
constructor(
address inboxAddress,
address l2FlagsAddress,
address gasConfigAccessControllerAddress,
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
) {
require(inboxAddress != address(0), "Invalid Inbox contract address");
require(l2FlagsAddress != address(0), "Invalid Flags contract address");
s_inbox = IInbox(inboxAddress);
s_gasConfigAccessController = AccessControllerInterface(gasConfigAccessControllerAddress);
s_l2FlagsAddress = l2FlagsAddress;
_setGasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
/**
* @notice versions:
*
* - ArbitrumValidator 0.1.0: initial release
*
* @inheritdoc TypeAndVersionInterface
*/
function typeAndVersion()
external
pure
virtual
override
returns (
string memory
)
{
return "ArbitrumValidator 0.1.0";
}
/// @return L2 Flags contract address
function l2Flags()
external
view
virtual
returns (address)
{
return s_l2FlagsAddress;
}
/// @return Arbitrum Inbox contract address
function inbox()
external
view
virtual
returns (address)
{
return address(s_inbox);
}
/// @return gas config AccessControllerInterface contract address
function gasConfigAccessController()
external
view
virtual
returns (address)
{
return address(s_gasConfigAccessController);
}
/// @return stored GasConfiguration
function gasConfig()
external
view
virtual
returns (GasConfiguration memory)
{
return s_gasConfig;
}
/// @notice makes this contract payable as it need funds to pay for L2 transactions fees on L1.
receive() external payable {}
/**
* @notice withdraws all funds availbale in this contract to the msg.sender
* @dev only owner can call this
*/
function withdrawFunds()
external
onlyOwner()
{
address payable to = payable(msg.sender);
to.transfer(address(this).balance);
}
/**
* @notice withdraws all funds availbale in this contract to the address specified
* @dev only owner can call this
* @param to address where to send the funds
*/
function withdrawFundsTo(
address payable to
)
external
onlyOwner()
{
to.transfer(address(this).balance);
}
/**
* @notice sets gas config AccessControllerInterface contract
* @dev only owner can call this
* @param accessController new AccessControllerInterface contract address
*/
function setGasAccessController(
address accessController
)
external
onlyOwner
{
_setGasAccessController(accessController);
}
/**
* @notice sets Arbitrum gas configuration
* @dev access control provided by s_gasConfigAccessController
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param gasLimitL2 gas limit for immediate L2 execution attempt. A value around 1M should be sufficient
* @param refundableAddress address where gas excess on L2 will be sent
*/
function setGasConfiguration(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
)
external
{
require(s_gasConfigAccessController.hasAccess(msg.sender, msg.data), "Access required to set config");
_setGasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
/**
* @notice validate method updates the state of an L2 Flag in case of change on the Arbitrum Sequencer.
* A one answer considers the service as offline.
* In case the previous answer is the same as the current it does not trigger any tx on L2. In other case,
* a retryable ticket is created on the Arbitrum L1 Inbox contract. The tx gas fee can be paid from this
* contract providing a value, or the same address on L2.
* @dev access control provided internally by SimpleWriteAccessController
* @param previousAnswer previous aggregator answer
* @param currentAnswer new aggregator answer
*/
function validate(
uint256 /* previousRoundId */,
int256 previousAnswer,
uint256 /* currentRoundId */,
int256 currentAnswer
)
external
override
checkAccess()
returns (bool)
{
// Avoids resending to L2 the same tx on every call
if (previousAnswer == currentAnswer) {
return true;
}
int isServiceOffline = 1;
// NOTICE: if gasCostL2 is zero the payment is processed on L2 so the L2 address needs to be funded, as it will
// paying the fee. We also ignore the returned msg number, that can be queried via the InboxMessageDelivered event.
s_inbox.createRetryableTicket{value: s_gasConfig.gasCostL2}(
s_l2FlagsAddress,
0, // L2 call value
// NOTICE: maxSubmissionCost info will possibly become available on L1 after the London fork. At that time this
// contract could start querying/calculating it directly so we wouldn't need to configure it statically. On L2 this
// info is available via `ArbRetryableTx.getSubmissionPrice`.
s_gasConfig.maxSubmissionCost, // Max submission cost of sending data length
s_gasConfig.refundableAddress, // excessFeeRefundAddress
s_gasConfig.refundableAddress, // callValueRefundAddress
s_gasConfig.gasLimitL2,
s_gasConfig.maxGasPrice,
currentAnswer == isServiceOffline ? CALL_RAISE_FLAG : CALL_LOWER_FLAG
);
return true;
}
function _setGasConfiguration(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
)
internal
{
// L2 will pay the fee if gasCostL2 is zero
if (gasCostL2 > 0) {
uint256 minGasCostValue = maxSubmissionCost + gasLimitL2 * maxGasPrice;
require(gasCostL2 >= minGasCostValue, "Gas cost provided is too low");
}
s_gasConfig = GasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
emit GasConfigurationSet(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
function _setGasAccessController(
address accessController
)
internal
{
address previousAccessController = address(s_gasConfigAccessController);
if (accessController != previousAccessController) {
s_gasConfigAccessController = AccessControllerInterface(accessController);
emit GasAccessControllerSet(previousAccessController, accessController);
}
}
} | /**
* @title ArbitrumValidator
* @notice Allows to raise and lower Flags on the Arbitrum network through its Layer 1 contracts
* - The internal AccessController controls the access of the validate method
* - Gas configuration is controlled by a configurable external SimpleWriteAccessController
* - Funds on the contract are managed by the owner
*/ | NatSpecMultiLine | typeAndVersion | function typeAndVersion()
external
pure
virtual
override
returns (
string memory
)
{
return "ArbitrumValidator 0.1.0";
}
| /**
* @notice versions:
*
* - ArbitrumValidator 0.1.0: initial release
*
* @inheritdoc TypeAndVersionInterface
*/ | NatSpecMultiLine | v0.8.6+commit.11564f7e | MIT | {
"func_code_index": [
3207,
3367
]
} | 7,108 |
|
ArbitrumValidator | src/v0.8/dev/ArbitrumValidator.sol | 0x29cd92f343f9d81e74fae28913b038a81005b46f | Solidity | ArbitrumValidator | contract ArbitrumValidator is TypeAndVersionInterface, AggregatorValidatorInterface, SimpleWriteAccessController {
// Config for L1 -> L2 `createRetryableTicket` call
struct GasConfiguration {
uint256 maxSubmissionCost;
uint256 maxGasPrice;
uint256 gasCostL2;
uint256 gasLimitL2;
address refundableAddress;
}
/// @dev Follows: https://eips.ethereum.org/EIPS/eip-1967
address constant private FLAG_ARBITRUM_SEQ_OFFLINE = address(bytes20(bytes32(uint256(keccak256("chainlink.flags.arbitrum-seq-offline")) - 1)));
bytes constant private CALL_RAISE_FLAG = abi.encodeWithSelector(FlagsInterface.raiseFlag.selector, FLAG_ARBITRUM_SEQ_OFFLINE);
bytes constant private CALL_LOWER_FLAG = abi.encodeWithSelector(FlagsInterface.lowerFlag.selector, FLAG_ARBITRUM_SEQ_OFFLINE);
address private s_l2FlagsAddress;
IInbox private s_inbox;
AccessControllerInterface private s_gasConfigAccessController;
GasConfiguration private s_gasConfig;
/**
* @notice emitted when a new gas configuration is set
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param refundableAddress address where gas excess on L2 will be sent
*/
event GasConfigurationSet(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address indexed refundableAddress
);
/**
* @notice emitted when a new gas access-control contract is set
* @param previous the address prior to the current setting
* @param current the address of the new access-control contract
*/
event GasAccessControllerSet(
address indexed previous,
address indexed current
);
/**
* @param inboxAddress address of the Arbitrum Inbox L1 contract
* @param l2FlagsAddress address of the Chainlink L2 Flags contract
* @param gasConfigAccessControllerAddress address of the access controller for managing gas price on Arbitrum
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param gasLimitL2 gas limit for immediate L2 execution attempt. A value around 1M should be sufficient
* @param refundableAddress address where gas excess on L2 will be sent
*/
constructor(
address inboxAddress,
address l2FlagsAddress,
address gasConfigAccessControllerAddress,
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
) {
require(inboxAddress != address(0), "Invalid Inbox contract address");
require(l2FlagsAddress != address(0), "Invalid Flags contract address");
s_inbox = IInbox(inboxAddress);
s_gasConfigAccessController = AccessControllerInterface(gasConfigAccessControllerAddress);
s_l2FlagsAddress = l2FlagsAddress;
_setGasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
/**
* @notice versions:
*
* - ArbitrumValidator 0.1.0: initial release
*
* @inheritdoc TypeAndVersionInterface
*/
function typeAndVersion()
external
pure
virtual
override
returns (
string memory
)
{
return "ArbitrumValidator 0.1.0";
}
/// @return L2 Flags contract address
function l2Flags()
external
view
virtual
returns (address)
{
return s_l2FlagsAddress;
}
/// @return Arbitrum Inbox contract address
function inbox()
external
view
virtual
returns (address)
{
return address(s_inbox);
}
/// @return gas config AccessControllerInterface contract address
function gasConfigAccessController()
external
view
virtual
returns (address)
{
return address(s_gasConfigAccessController);
}
/// @return stored GasConfiguration
function gasConfig()
external
view
virtual
returns (GasConfiguration memory)
{
return s_gasConfig;
}
/// @notice makes this contract payable as it need funds to pay for L2 transactions fees on L1.
receive() external payable {}
/**
* @notice withdraws all funds availbale in this contract to the msg.sender
* @dev only owner can call this
*/
function withdrawFunds()
external
onlyOwner()
{
address payable to = payable(msg.sender);
to.transfer(address(this).balance);
}
/**
* @notice withdraws all funds availbale in this contract to the address specified
* @dev only owner can call this
* @param to address where to send the funds
*/
function withdrawFundsTo(
address payable to
)
external
onlyOwner()
{
to.transfer(address(this).balance);
}
/**
* @notice sets gas config AccessControllerInterface contract
* @dev only owner can call this
* @param accessController new AccessControllerInterface contract address
*/
function setGasAccessController(
address accessController
)
external
onlyOwner
{
_setGasAccessController(accessController);
}
/**
* @notice sets Arbitrum gas configuration
* @dev access control provided by s_gasConfigAccessController
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param gasLimitL2 gas limit for immediate L2 execution attempt. A value around 1M should be sufficient
* @param refundableAddress address where gas excess on L2 will be sent
*/
function setGasConfiguration(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
)
external
{
require(s_gasConfigAccessController.hasAccess(msg.sender, msg.data), "Access required to set config");
_setGasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
/**
* @notice validate method updates the state of an L2 Flag in case of change on the Arbitrum Sequencer.
* A one answer considers the service as offline.
* In case the previous answer is the same as the current it does not trigger any tx on L2. In other case,
* a retryable ticket is created on the Arbitrum L1 Inbox contract. The tx gas fee can be paid from this
* contract providing a value, or the same address on L2.
* @dev access control provided internally by SimpleWriteAccessController
* @param previousAnswer previous aggregator answer
* @param currentAnswer new aggregator answer
*/
function validate(
uint256 /* previousRoundId */,
int256 previousAnswer,
uint256 /* currentRoundId */,
int256 currentAnswer
)
external
override
checkAccess()
returns (bool)
{
// Avoids resending to L2 the same tx on every call
if (previousAnswer == currentAnswer) {
return true;
}
int isServiceOffline = 1;
// NOTICE: if gasCostL2 is zero the payment is processed on L2 so the L2 address needs to be funded, as it will
// paying the fee. We also ignore the returned msg number, that can be queried via the InboxMessageDelivered event.
s_inbox.createRetryableTicket{value: s_gasConfig.gasCostL2}(
s_l2FlagsAddress,
0, // L2 call value
// NOTICE: maxSubmissionCost info will possibly become available on L1 after the London fork. At that time this
// contract could start querying/calculating it directly so we wouldn't need to configure it statically. On L2 this
// info is available via `ArbRetryableTx.getSubmissionPrice`.
s_gasConfig.maxSubmissionCost, // Max submission cost of sending data length
s_gasConfig.refundableAddress, // excessFeeRefundAddress
s_gasConfig.refundableAddress, // callValueRefundAddress
s_gasConfig.gasLimitL2,
s_gasConfig.maxGasPrice,
currentAnswer == isServiceOffline ? CALL_RAISE_FLAG : CALL_LOWER_FLAG
);
return true;
}
function _setGasConfiguration(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
)
internal
{
// L2 will pay the fee if gasCostL2 is zero
if (gasCostL2 > 0) {
uint256 minGasCostValue = maxSubmissionCost + gasLimitL2 * maxGasPrice;
require(gasCostL2 >= minGasCostValue, "Gas cost provided is too low");
}
s_gasConfig = GasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
emit GasConfigurationSet(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
function _setGasAccessController(
address accessController
)
internal
{
address previousAccessController = address(s_gasConfigAccessController);
if (accessController != previousAccessController) {
s_gasConfigAccessController = AccessControllerInterface(accessController);
emit GasAccessControllerSet(previousAccessController, accessController);
}
}
} | /**
* @title ArbitrumValidator
* @notice Allows to raise and lower Flags on the Arbitrum network through its Layer 1 contracts
* - The internal AccessController controls the access of the validate method
* - Gas configuration is controlled by a configurable external SimpleWriteAccessController
* - Funds on the contract are managed by the owner
*/ | NatSpecMultiLine | l2Flags | function l2Flags()
external
view
virtual
returns (address)
{
return s_l2FlagsAddress;
}
| /// @return L2 Flags contract address | NatSpecSingleLine | v0.8.6+commit.11564f7e | MIT | {
"func_code_index": [
3409,
3522
]
} | 7,109 |
|
ArbitrumValidator | src/v0.8/dev/ArbitrumValidator.sol | 0x29cd92f343f9d81e74fae28913b038a81005b46f | Solidity | ArbitrumValidator | contract ArbitrumValidator is TypeAndVersionInterface, AggregatorValidatorInterface, SimpleWriteAccessController {
// Config for L1 -> L2 `createRetryableTicket` call
struct GasConfiguration {
uint256 maxSubmissionCost;
uint256 maxGasPrice;
uint256 gasCostL2;
uint256 gasLimitL2;
address refundableAddress;
}
/// @dev Follows: https://eips.ethereum.org/EIPS/eip-1967
address constant private FLAG_ARBITRUM_SEQ_OFFLINE = address(bytes20(bytes32(uint256(keccak256("chainlink.flags.arbitrum-seq-offline")) - 1)));
bytes constant private CALL_RAISE_FLAG = abi.encodeWithSelector(FlagsInterface.raiseFlag.selector, FLAG_ARBITRUM_SEQ_OFFLINE);
bytes constant private CALL_LOWER_FLAG = abi.encodeWithSelector(FlagsInterface.lowerFlag.selector, FLAG_ARBITRUM_SEQ_OFFLINE);
address private s_l2FlagsAddress;
IInbox private s_inbox;
AccessControllerInterface private s_gasConfigAccessController;
GasConfiguration private s_gasConfig;
/**
* @notice emitted when a new gas configuration is set
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param refundableAddress address where gas excess on L2 will be sent
*/
event GasConfigurationSet(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address indexed refundableAddress
);
/**
* @notice emitted when a new gas access-control contract is set
* @param previous the address prior to the current setting
* @param current the address of the new access-control contract
*/
event GasAccessControllerSet(
address indexed previous,
address indexed current
);
/**
* @param inboxAddress address of the Arbitrum Inbox L1 contract
* @param l2FlagsAddress address of the Chainlink L2 Flags contract
* @param gasConfigAccessControllerAddress address of the access controller for managing gas price on Arbitrum
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param gasLimitL2 gas limit for immediate L2 execution attempt. A value around 1M should be sufficient
* @param refundableAddress address where gas excess on L2 will be sent
*/
constructor(
address inboxAddress,
address l2FlagsAddress,
address gasConfigAccessControllerAddress,
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
) {
require(inboxAddress != address(0), "Invalid Inbox contract address");
require(l2FlagsAddress != address(0), "Invalid Flags contract address");
s_inbox = IInbox(inboxAddress);
s_gasConfigAccessController = AccessControllerInterface(gasConfigAccessControllerAddress);
s_l2FlagsAddress = l2FlagsAddress;
_setGasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
/**
* @notice versions:
*
* - ArbitrumValidator 0.1.0: initial release
*
* @inheritdoc TypeAndVersionInterface
*/
function typeAndVersion()
external
pure
virtual
override
returns (
string memory
)
{
return "ArbitrumValidator 0.1.0";
}
/// @return L2 Flags contract address
function l2Flags()
external
view
virtual
returns (address)
{
return s_l2FlagsAddress;
}
/// @return Arbitrum Inbox contract address
function inbox()
external
view
virtual
returns (address)
{
return address(s_inbox);
}
/// @return gas config AccessControllerInterface contract address
function gasConfigAccessController()
external
view
virtual
returns (address)
{
return address(s_gasConfigAccessController);
}
/// @return stored GasConfiguration
function gasConfig()
external
view
virtual
returns (GasConfiguration memory)
{
return s_gasConfig;
}
/// @notice makes this contract payable as it need funds to pay for L2 transactions fees on L1.
receive() external payable {}
/**
* @notice withdraws all funds availbale in this contract to the msg.sender
* @dev only owner can call this
*/
function withdrawFunds()
external
onlyOwner()
{
address payable to = payable(msg.sender);
to.transfer(address(this).balance);
}
/**
* @notice withdraws all funds availbale in this contract to the address specified
* @dev only owner can call this
* @param to address where to send the funds
*/
function withdrawFundsTo(
address payable to
)
external
onlyOwner()
{
to.transfer(address(this).balance);
}
/**
* @notice sets gas config AccessControllerInterface contract
* @dev only owner can call this
* @param accessController new AccessControllerInterface contract address
*/
function setGasAccessController(
address accessController
)
external
onlyOwner
{
_setGasAccessController(accessController);
}
/**
* @notice sets Arbitrum gas configuration
* @dev access control provided by s_gasConfigAccessController
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param gasLimitL2 gas limit for immediate L2 execution attempt. A value around 1M should be sufficient
* @param refundableAddress address where gas excess on L2 will be sent
*/
function setGasConfiguration(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
)
external
{
require(s_gasConfigAccessController.hasAccess(msg.sender, msg.data), "Access required to set config");
_setGasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
/**
* @notice validate method updates the state of an L2 Flag in case of change on the Arbitrum Sequencer.
* A one answer considers the service as offline.
* In case the previous answer is the same as the current it does not trigger any tx on L2. In other case,
* a retryable ticket is created on the Arbitrum L1 Inbox contract. The tx gas fee can be paid from this
* contract providing a value, or the same address on L2.
* @dev access control provided internally by SimpleWriteAccessController
* @param previousAnswer previous aggregator answer
* @param currentAnswer new aggregator answer
*/
function validate(
uint256 /* previousRoundId */,
int256 previousAnswer,
uint256 /* currentRoundId */,
int256 currentAnswer
)
external
override
checkAccess()
returns (bool)
{
// Avoids resending to L2 the same tx on every call
if (previousAnswer == currentAnswer) {
return true;
}
int isServiceOffline = 1;
// NOTICE: if gasCostL2 is zero the payment is processed on L2 so the L2 address needs to be funded, as it will
// paying the fee. We also ignore the returned msg number, that can be queried via the InboxMessageDelivered event.
s_inbox.createRetryableTicket{value: s_gasConfig.gasCostL2}(
s_l2FlagsAddress,
0, // L2 call value
// NOTICE: maxSubmissionCost info will possibly become available on L1 after the London fork. At that time this
// contract could start querying/calculating it directly so we wouldn't need to configure it statically. On L2 this
// info is available via `ArbRetryableTx.getSubmissionPrice`.
s_gasConfig.maxSubmissionCost, // Max submission cost of sending data length
s_gasConfig.refundableAddress, // excessFeeRefundAddress
s_gasConfig.refundableAddress, // callValueRefundAddress
s_gasConfig.gasLimitL2,
s_gasConfig.maxGasPrice,
currentAnswer == isServiceOffline ? CALL_RAISE_FLAG : CALL_LOWER_FLAG
);
return true;
}
function _setGasConfiguration(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
)
internal
{
// L2 will pay the fee if gasCostL2 is zero
if (gasCostL2 > 0) {
uint256 minGasCostValue = maxSubmissionCost + gasLimitL2 * maxGasPrice;
require(gasCostL2 >= minGasCostValue, "Gas cost provided is too low");
}
s_gasConfig = GasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
emit GasConfigurationSet(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
function _setGasAccessController(
address accessController
)
internal
{
address previousAccessController = address(s_gasConfigAccessController);
if (accessController != previousAccessController) {
s_gasConfigAccessController = AccessControllerInterface(accessController);
emit GasAccessControllerSet(previousAccessController, accessController);
}
}
} | /**
* @title ArbitrumValidator
* @notice Allows to raise and lower Flags on the Arbitrum network through its Layer 1 contracts
* - The internal AccessController controls the access of the validate method
* - Gas configuration is controlled by a configurable external SimpleWriteAccessController
* - Funds on the contract are managed by the owner
*/ | NatSpecMultiLine | inbox | function inbox()
external
view
virtual
returns (address)
{
return address(s_inbox);
}
| /// @return Arbitrum Inbox contract address | NatSpecSingleLine | v0.8.6+commit.11564f7e | MIT | {
"func_code_index": [
3570,
3681
]
} | 7,110 |
|
ArbitrumValidator | src/v0.8/dev/ArbitrumValidator.sol | 0x29cd92f343f9d81e74fae28913b038a81005b46f | Solidity | ArbitrumValidator | contract ArbitrumValidator is TypeAndVersionInterface, AggregatorValidatorInterface, SimpleWriteAccessController {
// Config for L1 -> L2 `createRetryableTicket` call
struct GasConfiguration {
uint256 maxSubmissionCost;
uint256 maxGasPrice;
uint256 gasCostL2;
uint256 gasLimitL2;
address refundableAddress;
}
/// @dev Follows: https://eips.ethereum.org/EIPS/eip-1967
address constant private FLAG_ARBITRUM_SEQ_OFFLINE = address(bytes20(bytes32(uint256(keccak256("chainlink.flags.arbitrum-seq-offline")) - 1)));
bytes constant private CALL_RAISE_FLAG = abi.encodeWithSelector(FlagsInterface.raiseFlag.selector, FLAG_ARBITRUM_SEQ_OFFLINE);
bytes constant private CALL_LOWER_FLAG = abi.encodeWithSelector(FlagsInterface.lowerFlag.selector, FLAG_ARBITRUM_SEQ_OFFLINE);
address private s_l2FlagsAddress;
IInbox private s_inbox;
AccessControllerInterface private s_gasConfigAccessController;
GasConfiguration private s_gasConfig;
/**
* @notice emitted when a new gas configuration is set
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param refundableAddress address where gas excess on L2 will be sent
*/
event GasConfigurationSet(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address indexed refundableAddress
);
/**
* @notice emitted when a new gas access-control contract is set
* @param previous the address prior to the current setting
* @param current the address of the new access-control contract
*/
event GasAccessControllerSet(
address indexed previous,
address indexed current
);
/**
* @param inboxAddress address of the Arbitrum Inbox L1 contract
* @param l2FlagsAddress address of the Chainlink L2 Flags contract
* @param gasConfigAccessControllerAddress address of the access controller for managing gas price on Arbitrum
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param gasLimitL2 gas limit for immediate L2 execution attempt. A value around 1M should be sufficient
* @param refundableAddress address where gas excess on L2 will be sent
*/
constructor(
address inboxAddress,
address l2FlagsAddress,
address gasConfigAccessControllerAddress,
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
) {
require(inboxAddress != address(0), "Invalid Inbox contract address");
require(l2FlagsAddress != address(0), "Invalid Flags contract address");
s_inbox = IInbox(inboxAddress);
s_gasConfigAccessController = AccessControllerInterface(gasConfigAccessControllerAddress);
s_l2FlagsAddress = l2FlagsAddress;
_setGasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
/**
* @notice versions:
*
* - ArbitrumValidator 0.1.0: initial release
*
* @inheritdoc TypeAndVersionInterface
*/
function typeAndVersion()
external
pure
virtual
override
returns (
string memory
)
{
return "ArbitrumValidator 0.1.0";
}
/// @return L2 Flags contract address
function l2Flags()
external
view
virtual
returns (address)
{
return s_l2FlagsAddress;
}
/// @return Arbitrum Inbox contract address
function inbox()
external
view
virtual
returns (address)
{
return address(s_inbox);
}
/// @return gas config AccessControllerInterface contract address
function gasConfigAccessController()
external
view
virtual
returns (address)
{
return address(s_gasConfigAccessController);
}
/// @return stored GasConfiguration
function gasConfig()
external
view
virtual
returns (GasConfiguration memory)
{
return s_gasConfig;
}
/// @notice makes this contract payable as it need funds to pay for L2 transactions fees on L1.
receive() external payable {}
/**
* @notice withdraws all funds availbale in this contract to the msg.sender
* @dev only owner can call this
*/
function withdrawFunds()
external
onlyOwner()
{
address payable to = payable(msg.sender);
to.transfer(address(this).balance);
}
/**
* @notice withdraws all funds availbale in this contract to the address specified
* @dev only owner can call this
* @param to address where to send the funds
*/
function withdrawFundsTo(
address payable to
)
external
onlyOwner()
{
to.transfer(address(this).balance);
}
/**
* @notice sets gas config AccessControllerInterface contract
* @dev only owner can call this
* @param accessController new AccessControllerInterface contract address
*/
function setGasAccessController(
address accessController
)
external
onlyOwner
{
_setGasAccessController(accessController);
}
/**
* @notice sets Arbitrum gas configuration
* @dev access control provided by s_gasConfigAccessController
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param gasLimitL2 gas limit for immediate L2 execution attempt. A value around 1M should be sufficient
* @param refundableAddress address where gas excess on L2 will be sent
*/
function setGasConfiguration(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
)
external
{
require(s_gasConfigAccessController.hasAccess(msg.sender, msg.data), "Access required to set config");
_setGasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
/**
* @notice validate method updates the state of an L2 Flag in case of change on the Arbitrum Sequencer.
* A one answer considers the service as offline.
* In case the previous answer is the same as the current it does not trigger any tx on L2. In other case,
* a retryable ticket is created on the Arbitrum L1 Inbox contract. The tx gas fee can be paid from this
* contract providing a value, or the same address on L2.
* @dev access control provided internally by SimpleWriteAccessController
* @param previousAnswer previous aggregator answer
* @param currentAnswer new aggregator answer
*/
function validate(
uint256 /* previousRoundId */,
int256 previousAnswer,
uint256 /* currentRoundId */,
int256 currentAnswer
)
external
override
checkAccess()
returns (bool)
{
// Avoids resending to L2 the same tx on every call
if (previousAnswer == currentAnswer) {
return true;
}
int isServiceOffline = 1;
// NOTICE: if gasCostL2 is zero the payment is processed on L2 so the L2 address needs to be funded, as it will
// paying the fee. We also ignore the returned msg number, that can be queried via the InboxMessageDelivered event.
s_inbox.createRetryableTicket{value: s_gasConfig.gasCostL2}(
s_l2FlagsAddress,
0, // L2 call value
// NOTICE: maxSubmissionCost info will possibly become available on L1 after the London fork. At that time this
// contract could start querying/calculating it directly so we wouldn't need to configure it statically. On L2 this
// info is available via `ArbRetryableTx.getSubmissionPrice`.
s_gasConfig.maxSubmissionCost, // Max submission cost of sending data length
s_gasConfig.refundableAddress, // excessFeeRefundAddress
s_gasConfig.refundableAddress, // callValueRefundAddress
s_gasConfig.gasLimitL2,
s_gasConfig.maxGasPrice,
currentAnswer == isServiceOffline ? CALL_RAISE_FLAG : CALL_LOWER_FLAG
);
return true;
}
function _setGasConfiguration(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
)
internal
{
// L2 will pay the fee if gasCostL2 is zero
if (gasCostL2 > 0) {
uint256 minGasCostValue = maxSubmissionCost + gasLimitL2 * maxGasPrice;
require(gasCostL2 >= minGasCostValue, "Gas cost provided is too low");
}
s_gasConfig = GasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
emit GasConfigurationSet(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
function _setGasAccessController(
address accessController
)
internal
{
address previousAccessController = address(s_gasConfigAccessController);
if (accessController != previousAccessController) {
s_gasConfigAccessController = AccessControllerInterface(accessController);
emit GasAccessControllerSet(previousAccessController, accessController);
}
}
} | /**
* @title ArbitrumValidator
* @notice Allows to raise and lower Flags on the Arbitrum network through its Layer 1 contracts
* - The internal AccessController controls the access of the validate method
* - Gas configuration is controlled by a configurable external SimpleWriteAccessController
* - Funds on the contract are managed by the owner
*/ | NatSpecMultiLine | gasConfigAccessController | function gasConfigAccessController()
external
view
virtual
returns (address)
{
return address(s_gasConfigAccessController);
}
| /// @return gas config AccessControllerInterface contract address | NatSpecSingleLine | v0.8.6+commit.11564f7e | MIT | {
"func_code_index": [
3751,
3902
]
} | 7,111 |
|
ArbitrumValidator | src/v0.8/dev/ArbitrumValidator.sol | 0x29cd92f343f9d81e74fae28913b038a81005b46f | Solidity | ArbitrumValidator | contract ArbitrumValidator is TypeAndVersionInterface, AggregatorValidatorInterface, SimpleWriteAccessController {
// Config for L1 -> L2 `createRetryableTicket` call
struct GasConfiguration {
uint256 maxSubmissionCost;
uint256 maxGasPrice;
uint256 gasCostL2;
uint256 gasLimitL2;
address refundableAddress;
}
/// @dev Follows: https://eips.ethereum.org/EIPS/eip-1967
address constant private FLAG_ARBITRUM_SEQ_OFFLINE = address(bytes20(bytes32(uint256(keccak256("chainlink.flags.arbitrum-seq-offline")) - 1)));
bytes constant private CALL_RAISE_FLAG = abi.encodeWithSelector(FlagsInterface.raiseFlag.selector, FLAG_ARBITRUM_SEQ_OFFLINE);
bytes constant private CALL_LOWER_FLAG = abi.encodeWithSelector(FlagsInterface.lowerFlag.selector, FLAG_ARBITRUM_SEQ_OFFLINE);
address private s_l2FlagsAddress;
IInbox private s_inbox;
AccessControllerInterface private s_gasConfigAccessController;
GasConfiguration private s_gasConfig;
/**
* @notice emitted when a new gas configuration is set
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param refundableAddress address where gas excess on L2 will be sent
*/
event GasConfigurationSet(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address indexed refundableAddress
);
/**
* @notice emitted when a new gas access-control contract is set
* @param previous the address prior to the current setting
* @param current the address of the new access-control contract
*/
event GasAccessControllerSet(
address indexed previous,
address indexed current
);
/**
* @param inboxAddress address of the Arbitrum Inbox L1 contract
* @param l2FlagsAddress address of the Chainlink L2 Flags contract
* @param gasConfigAccessControllerAddress address of the access controller for managing gas price on Arbitrum
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param gasLimitL2 gas limit for immediate L2 execution attempt. A value around 1M should be sufficient
* @param refundableAddress address where gas excess on L2 will be sent
*/
constructor(
address inboxAddress,
address l2FlagsAddress,
address gasConfigAccessControllerAddress,
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
) {
require(inboxAddress != address(0), "Invalid Inbox contract address");
require(l2FlagsAddress != address(0), "Invalid Flags contract address");
s_inbox = IInbox(inboxAddress);
s_gasConfigAccessController = AccessControllerInterface(gasConfigAccessControllerAddress);
s_l2FlagsAddress = l2FlagsAddress;
_setGasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
/**
* @notice versions:
*
* - ArbitrumValidator 0.1.0: initial release
*
* @inheritdoc TypeAndVersionInterface
*/
function typeAndVersion()
external
pure
virtual
override
returns (
string memory
)
{
return "ArbitrumValidator 0.1.0";
}
/// @return L2 Flags contract address
function l2Flags()
external
view
virtual
returns (address)
{
return s_l2FlagsAddress;
}
/// @return Arbitrum Inbox contract address
function inbox()
external
view
virtual
returns (address)
{
return address(s_inbox);
}
/// @return gas config AccessControllerInterface contract address
function gasConfigAccessController()
external
view
virtual
returns (address)
{
return address(s_gasConfigAccessController);
}
/// @return stored GasConfiguration
function gasConfig()
external
view
virtual
returns (GasConfiguration memory)
{
return s_gasConfig;
}
/// @notice makes this contract payable as it need funds to pay for L2 transactions fees on L1.
receive() external payable {}
/**
* @notice withdraws all funds availbale in this contract to the msg.sender
* @dev only owner can call this
*/
function withdrawFunds()
external
onlyOwner()
{
address payable to = payable(msg.sender);
to.transfer(address(this).balance);
}
/**
* @notice withdraws all funds availbale in this contract to the address specified
* @dev only owner can call this
* @param to address where to send the funds
*/
function withdrawFundsTo(
address payable to
)
external
onlyOwner()
{
to.transfer(address(this).balance);
}
/**
* @notice sets gas config AccessControllerInterface contract
* @dev only owner can call this
* @param accessController new AccessControllerInterface contract address
*/
function setGasAccessController(
address accessController
)
external
onlyOwner
{
_setGasAccessController(accessController);
}
/**
* @notice sets Arbitrum gas configuration
* @dev access control provided by s_gasConfigAccessController
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param gasLimitL2 gas limit for immediate L2 execution attempt. A value around 1M should be sufficient
* @param refundableAddress address where gas excess on L2 will be sent
*/
function setGasConfiguration(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
)
external
{
require(s_gasConfigAccessController.hasAccess(msg.sender, msg.data), "Access required to set config");
_setGasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
/**
* @notice validate method updates the state of an L2 Flag in case of change on the Arbitrum Sequencer.
* A one answer considers the service as offline.
* In case the previous answer is the same as the current it does not trigger any tx on L2. In other case,
* a retryable ticket is created on the Arbitrum L1 Inbox contract. The tx gas fee can be paid from this
* contract providing a value, or the same address on L2.
* @dev access control provided internally by SimpleWriteAccessController
* @param previousAnswer previous aggregator answer
* @param currentAnswer new aggregator answer
*/
function validate(
uint256 /* previousRoundId */,
int256 previousAnswer,
uint256 /* currentRoundId */,
int256 currentAnswer
)
external
override
checkAccess()
returns (bool)
{
// Avoids resending to L2 the same tx on every call
if (previousAnswer == currentAnswer) {
return true;
}
int isServiceOffline = 1;
// NOTICE: if gasCostL2 is zero the payment is processed on L2 so the L2 address needs to be funded, as it will
// paying the fee. We also ignore the returned msg number, that can be queried via the InboxMessageDelivered event.
s_inbox.createRetryableTicket{value: s_gasConfig.gasCostL2}(
s_l2FlagsAddress,
0, // L2 call value
// NOTICE: maxSubmissionCost info will possibly become available on L1 after the London fork. At that time this
// contract could start querying/calculating it directly so we wouldn't need to configure it statically. On L2 this
// info is available via `ArbRetryableTx.getSubmissionPrice`.
s_gasConfig.maxSubmissionCost, // Max submission cost of sending data length
s_gasConfig.refundableAddress, // excessFeeRefundAddress
s_gasConfig.refundableAddress, // callValueRefundAddress
s_gasConfig.gasLimitL2,
s_gasConfig.maxGasPrice,
currentAnswer == isServiceOffline ? CALL_RAISE_FLAG : CALL_LOWER_FLAG
);
return true;
}
function _setGasConfiguration(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
)
internal
{
// L2 will pay the fee if gasCostL2 is zero
if (gasCostL2 > 0) {
uint256 minGasCostValue = maxSubmissionCost + gasLimitL2 * maxGasPrice;
require(gasCostL2 >= minGasCostValue, "Gas cost provided is too low");
}
s_gasConfig = GasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
emit GasConfigurationSet(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
function _setGasAccessController(
address accessController
)
internal
{
address previousAccessController = address(s_gasConfigAccessController);
if (accessController != previousAccessController) {
s_gasConfigAccessController = AccessControllerInterface(accessController);
emit GasAccessControllerSet(previousAccessController, accessController);
}
}
} | /**
* @title ArbitrumValidator
* @notice Allows to raise and lower Flags on the Arbitrum network through its Layer 1 contracts
* - The internal AccessController controls the access of the validate method
* - Gas configuration is controlled by a configurable external SimpleWriteAccessController
* - Funds on the contract are managed by the owner
*/ | NatSpecMultiLine | gasConfig | function gasConfig()
external
view
virtual
returns (GasConfiguration memory)
{
return s_gasConfig;
}
| /// @return stored GasConfiguration | NatSpecSingleLine | v0.8.6+commit.11564f7e | MIT | {
"func_code_index": [
3942,
4068
]
} | 7,112 |
|
ArbitrumValidator | src/v0.8/dev/ArbitrumValidator.sol | 0x29cd92f343f9d81e74fae28913b038a81005b46f | Solidity | ArbitrumValidator | contract ArbitrumValidator is TypeAndVersionInterface, AggregatorValidatorInterface, SimpleWriteAccessController {
// Config for L1 -> L2 `createRetryableTicket` call
struct GasConfiguration {
uint256 maxSubmissionCost;
uint256 maxGasPrice;
uint256 gasCostL2;
uint256 gasLimitL2;
address refundableAddress;
}
/// @dev Follows: https://eips.ethereum.org/EIPS/eip-1967
address constant private FLAG_ARBITRUM_SEQ_OFFLINE = address(bytes20(bytes32(uint256(keccak256("chainlink.flags.arbitrum-seq-offline")) - 1)));
bytes constant private CALL_RAISE_FLAG = abi.encodeWithSelector(FlagsInterface.raiseFlag.selector, FLAG_ARBITRUM_SEQ_OFFLINE);
bytes constant private CALL_LOWER_FLAG = abi.encodeWithSelector(FlagsInterface.lowerFlag.selector, FLAG_ARBITRUM_SEQ_OFFLINE);
address private s_l2FlagsAddress;
IInbox private s_inbox;
AccessControllerInterface private s_gasConfigAccessController;
GasConfiguration private s_gasConfig;
/**
* @notice emitted when a new gas configuration is set
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param refundableAddress address where gas excess on L2 will be sent
*/
event GasConfigurationSet(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address indexed refundableAddress
);
/**
* @notice emitted when a new gas access-control contract is set
* @param previous the address prior to the current setting
* @param current the address of the new access-control contract
*/
event GasAccessControllerSet(
address indexed previous,
address indexed current
);
/**
* @param inboxAddress address of the Arbitrum Inbox L1 contract
* @param l2FlagsAddress address of the Chainlink L2 Flags contract
* @param gasConfigAccessControllerAddress address of the access controller for managing gas price on Arbitrum
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param gasLimitL2 gas limit for immediate L2 execution attempt. A value around 1M should be sufficient
* @param refundableAddress address where gas excess on L2 will be sent
*/
constructor(
address inboxAddress,
address l2FlagsAddress,
address gasConfigAccessControllerAddress,
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
) {
require(inboxAddress != address(0), "Invalid Inbox contract address");
require(l2FlagsAddress != address(0), "Invalid Flags contract address");
s_inbox = IInbox(inboxAddress);
s_gasConfigAccessController = AccessControllerInterface(gasConfigAccessControllerAddress);
s_l2FlagsAddress = l2FlagsAddress;
_setGasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
/**
* @notice versions:
*
* - ArbitrumValidator 0.1.0: initial release
*
* @inheritdoc TypeAndVersionInterface
*/
function typeAndVersion()
external
pure
virtual
override
returns (
string memory
)
{
return "ArbitrumValidator 0.1.0";
}
/// @return L2 Flags contract address
function l2Flags()
external
view
virtual
returns (address)
{
return s_l2FlagsAddress;
}
/// @return Arbitrum Inbox contract address
function inbox()
external
view
virtual
returns (address)
{
return address(s_inbox);
}
/// @return gas config AccessControllerInterface contract address
function gasConfigAccessController()
external
view
virtual
returns (address)
{
return address(s_gasConfigAccessController);
}
/// @return stored GasConfiguration
function gasConfig()
external
view
virtual
returns (GasConfiguration memory)
{
return s_gasConfig;
}
/// @notice makes this contract payable as it need funds to pay for L2 transactions fees on L1.
receive() external payable {}
/**
* @notice withdraws all funds availbale in this contract to the msg.sender
* @dev only owner can call this
*/
function withdrawFunds()
external
onlyOwner()
{
address payable to = payable(msg.sender);
to.transfer(address(this).balance);
}
/**
* @notice withdraws all funds availbale in this contract to the address specified
* @dev only owner can call this
* @param to address where to send the funds
*/
function withdrawFundsTo(
address payable to
)
external
onlyOwner()
{
to.transfer(address(this).balance);
}
/**
* @notice sets gas config AccessControllerInterface contract
* @dev only owner can call this
* @param accessController new AccessControllerInterface contract address
*/
function setGasAccessController(
address accessController
)
external
onlyOwner
{
_setGasAccessController(accessController);
}
/**
* @notice sets Arbitrum gas configuration
* @dev access control provided by s_gasConfigAccessController
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param gasLimitL2 gas limit for immediate L2 execution attempt. A value around 1M should be sufficient
* @param refundableAddress address where gas excess on L2 will be sent
*/
function setGasConfiguration(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
)
external
{
require(s_gasConfigAccessController.hasAccess(msg.sender, msg.data), "Access required to set config");
_setGasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
/**
* @notice validate method updates the state of an L2 Flag in case of change on the Arbitrum Sequencer.
* A one answer considers the service as offline.
* In case the previous answer is the same as the current it does not trigger any tx on L2. In other case,
* a retryable ticket is created on the Arbitrum L1 Inbox contract. The tx gas fee can be paid from this
* contract providing a value, or the same address on L2.
* @dev access control provided internally by SimpleWriteAccessController
* @param previousAnswer previous aggregator answer
* @param currentAnswer new aggregator answer
*/
function validate(
uint256 /* previousRoundId */,
int256 previousAnswer,
uint256 /* currentRoundId */,
int256 currentAnswer
)
external
override
checkAccess()
returns (bool)
{
// Avoids resending to L2 the same tx on every call
if (previousAnswer == currentAnswer) {
return true;
}
int isServiceOffline = 1;
// NOTICE: if gasCostL2 is zero the payment is processed on L2 so the L2 address needs to be funded, as it will
// paying the fee. We also ignore the returned msg number, that can be queried via the InboxMessageDelivered event.
s_inbox.createRetryableTicket{value: s_gasConfig.gasCostL2}(
s_l2FlagsAddress,
0, // L2 call value
// NOTICE: maxSubmissionCost info will possibly become available on L1 after the London fork. At that time this
// contract could start querying/calculating it directly so we wouldn't need to configure it statically. On L2 this
// info is available via `ArbRetryableTx.getSubmissionPrice`.
s_gasConfig.maxSubmissionCost, // Max submission cost of sending data length
s_gasConfig.refundableAddress, // excessFeeRefundAddress
s_gasConfig.refundableAddress, // callValueRefundAddress
s_gasConfig.gasLimitL2,
s_gasConfig.maxGasPrice,
currentAnswer == isServiceOffline ? CALL_RAISE_FLAG : CALL_LOWER_FLAG
);
return true;
}
function _setGasConfiguration(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
)
internal
{
// L2 will pay the fee if gasCostL2 is zero
if (gasCostL2 > 0) {
uint256 minGasCostValue = maxSubmissionCost + gasLimitL2 * maxGasPrice;
require(gasCostL2 >= minGasCostValue, "Gas cost provided is too low");
}
s_gasConfig = GasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
emit GasConfigurationSet(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
function _setGasAccessController(
address accessController
)
internal
{
address previousAccessController = address(s_gasConfigAccessController);
if (accessController != previousAccessController) {
s_gasConfigAccessController = AccessControllerInterface(accessController);
emit GasAccessControllerSet(previousAccessController, accessController);
}
}
} | /**
* @title ArbitrumValidator
* @notice Allows to raise and lower Flags on the Arbitrum network through its Layer 1 contracts
* - The internal AccessController controls the access of the validate method
* - Gas configuration is controlled by a configurable external SimpleWriteAccessController
* - Funds on the contract are managed by the owner
*/ | NatSpecMultiLine | /// @notice makes this contract payable as it need funds to pay for L2 transactions fees on L1. | NatSpecSingleLine | v0.8.6+commit.11564f7e | MIT | {
"func_code_index": [
4168,
4199
]
} | 7,113 |
|||
ArbitrumValidator | src/v0.8/dev/ArbitrumValidator.sol | 0x29cd92f343f9d81e74fae28913b038a81005b46f | Solidity | ArbitrumValidator | contract ArbitrumValidator is TypeAndVersionInterface, AggregatorValidatorInterface, SimpleWriteAccessController {
// Config for L1 -> L2 `createRetryableTicket` call
struct GasConfiguration {
uint256 maxSubmissionCost;
uint256 maxGasPrice;
uint256 gasCostL2;
uint256 gasLimitL2;
address refundableAddress;
}
/// @dev Follows: https://eips.ethereum.org/EIPS/eip-1967
address constant private FLAG_ARBITRUM_SEQ_OFFLINE = address(bytes20(bytes32(uint256(keccak256("chainlink.flags.arbitrum-seq-offline")) - 1)));
bytes constant private CALL_RAISE_FLAG = abi.encodeWithSelector(FlagsInterface.raiseFlag.selector, FLAG_ARBITRUM_SEQ_OFFLINE);
bytes constant private CALL_LOWER_FLAG = abi.encodeWithSelector(FlagsInterface.lowerFlag.selector, FLAG_ARBITRUM_SEQ_OFFLINE);
address private s_l2FlagsAddress;
IInbox private s_inbox;
AccessControllerInterface private s_gasConfigAccessController;
GasConfiguration private s_gasConfig;
/**
* @notice emitted when a new gas configuration is set
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param refundableAddress address where gas excess on L2 will be sent
*/
event GasConfigurationSet(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address indexed refundableAddress
);
/**
* @notice emitted when a new gas access-control contract is set
* @param previous the address prior to the current setting
* @param current the address of the new access-control contract
*/
event GasAccessControllerSet(
address indexed previous,
address indexed current
);
/**
* @param inboxAddress address of the Arbitrum Inbox L1 contract
* @param l2FlagsAddress address of the Chainlink L2 Flags contract
* @param gasConfigAccessControllerAddress address of the access controller for managing gas price on Arbitrum
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param gasLimitL2 gas limit for immediate L2 execution attempt. A value around 1M should be sufficient
* @param refundableAddress address where gas excess on L2 will be sent
*/
constructor(
address inboxAddress,
address l2FlagsAddress,
address gasConfigAccessControllerAddress,
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
) {
require(inboxAddress != address(0), "Invalid Inbox contract address");
require(l2FlagsAddress != address(0), "Invalid Flags contract address");
s_inbox = IInbox(inboxAddress);
s_gasConfigAccessController = AccessControllerInterface(gasConfigAccessControllerAddress);
s_l2FlagsAddress = l2FlagsAddress;
_setGasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
/**
* @notice versions:
*
* - ArbitrumValidator 0.1.0: initial release
*
* @inheritdoc TypeAndVersionInterface
*/
function typeAndVersion()
external
pure
virtual
override
returns (
string memory
)
{
return "ArbitrumValidator 0.1.0";
}
/// @return L2 Flags contract address
function l2Flags()
external
view
virtual
returns (address)
{
return s_l2FlagsAddress;
}
/// @return Arbitrum Inbox contract address
function inbox()
external
view
virtual
returns (address)
{
return address(s_inbox);
}
/// @return gas config AccessControllerInterface contract address
function gasConfigAccessController()
external
view
virtual
returns (address)
{
return address(s_gasConfigAccessController);
}
/// @return stored GasConfiguration
function gasConfig()
external
view
virtual
returns (GasConfiguration memory)
{
return s_gasConfig;
}
/// @notice makes this contract payable as it need funds to pay for L2 transactions fees on L1.
receive() external payable {}
/**
* @notice withdraws all funds availbale in this contract to the msg.sender
* @dev only owner can call this
*/
function withdrawFunds()
external
onlyOwner()
{
address payable to = payable(msg.sender);
to.transfer(address(this).balance);
}
/**
* @notice withdraws all funds availbale in this contract to the address specified
* @dev only owner can call this
* @param to address where to send the funds
*/
function withdrawFundsTo(
address payable to
)
external
onlyOwner()
{
to.transfer(address(this).balance);
}
/**
* @notice sets gas config AccessControllerInterface contract
* @dev only owner can call this
* @param accessController new AccessControllerInterface contract address
*/
function setGasAccessController(
address accessController
)
external
onlyOwner
{
_setGasAccessController(accessController);
}
/**
* @notice sets Arbitrum gas configuration
* @dev access control provided by s_gasConfigAccessController
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param gasLimitL2 gas limit for immediate L2 execution attempt. A value around 1M should be sufficient
* @param refundableAddress address where gas excess on L2 will be sent
*/
function setGasConfiguration(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
)
external
{
require(s_gasConfigAccessController.hasAccess(msg.sender, msg.data), "Access required to set config");
_setGasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
/**
* @notice validate method updates the state of an L2 Flag in case of change on the Arbitrum Sequencer.
* A one answer considers the service as offline.
* In case the previous answer is the same as the current it does not trigger any tx on L2. In other case,
* a retryable ticket is created on the Arbitrum L1 Inbox contract. The tx gas fee can be paid from this
* contract providing a value, or the same address on L2.
* @dev access control provided internally by SimpleWriteAccessController
* @param previousAnswer previous aggregator answer
* @param currentAnswer new aggregator answer
*/
function validate(
uint256 /* previousRoundId */,
int256 previousAnswer,
uint256 /* currentRoundId */,
int256 currentAnswer
)
external
override
checkAccess()
returns (bool)
{
// Avoids resending to L2 the same tx on every call
if (previousAnswer == currentAnswer) {
return true;
}
int isServiceOffline = 1;
// NOTICE: if gasCostL2 is zero the payment is processed on L2 so the L2 address needs to be funded, as it will
// paying the fee. We also ignore the returned msg number, that can be queried via the InboxMessageDelivered event.
s_inbox.createRetryableTicket{value: s_gasConfig.gasCostL2}(
s_l2FlagsAddress,
0, // L2 call value
// NOTICE: maxSubmissionCost info will possibly become available on L1 after the London fork. At that time this
// contract could start querying/calculating it directly so we wouldn't need to configure it statically. On L2 this
// info is available via `ArbRetryableTx.getSubmissionPrice`.
s_gasConfig.maxSubmissionCost, // Max submission cost of sending data length
s_gasConfig.refundableAddress, // excessFeeRefundAddress
s_gasConfig.refundableAddress, // callValueRefundAddress
s_gasConfig.gasLimitL2,
s_gasConfig.maxGasPrice,
currentAnswer == isServiceOffline ? CALL_RAISE_FLAG : CALL_LOWER_FLAG
);
return true;
}
function _setGasConfiguration(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
)
internal
{
// L2 will pay the fee if gasCostL2 is zero
if (gasCostL2 > 0) {
uint256 minGasCostValue = maxSubmissionCost + gasLimitL2 * maxGasPrice;
require(gasCostL2 >= minGasCostValue, "Gas cost provided is too low");
}
s_gasConfig = GasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
emit GasConfigurationSet(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
function _setGasAccessController(
address accessController
)
internal
{
address previousAccessController = address(s_gasConfigAccessController);
if (accessController != previousAccessController) {
s_gasConfigAccessController = AccessControllerInterface(accessController);
emit GasAccessControllerSet(previousAccessController, accessController);
}
}
} | /**
* @title ArbitrumValidator
* @notice Allows to raise and lower Flags on the Arbitrum network through its Layer 1 contracts
* - The internal AccessController controls the access of the validate method
* - Gas configuration is controlled by a configurable external SimpleWriteAccessController
* - Funds on the contract are managed by the owner
*/ | NatSpecMultiLine | withdrawFunds | function withdrawFunds()
external
onlyOwner()
{
address payable to = payable(msg.sender);
to.transfer(address(this).balance);
}
| /**
* @notice withdraws all funds availbale in this contract to the msg.sender
* @dev only owner can call this
*/ | NatSpecMultiLine | v0.8.6+commit.11564f7e | MIT | {
"func_code_index": [
4326,
4475
]
} | 7,114 |
|
ArbitrumValidator | src/v0.8/dev/ArbitrumValidator.sol | 0x29cd92f343f9d81e74fae28913b038a81005b46f | Solidity | ArbitrumValidator | contract ArbitrumValidator is TypeAndVersionInterface, AggregatorValidatorInterface, SimpleWriteAccessController {
// Config for L1 -> L2 `createRetryableTicket` call
struct GasConfiguration {
uint256 maxSubmissionCost;
uint256 maxGasPrice;
uint256 gasCostL2;
uint256 gasLimitL2;
address refundableAddress;
}
/// @dev Follows: https://eips.ethereum.org/EIPS/eip-1967
address constant private FLAG_ARBITRUM_SEQ_OFFLINE = address(bytes20(bytes32(uint256(keccak256("chainlink.flags.arbitrum-seq-offline")) - 1)));
bytes constant private CALL_RAISE_FLAG = abi.encodeWithSelector(FlagsInterface.raiseFlag.selector, FLAG_ARBITRUM_SEQ_OFFLINE);
bytes constant private CALL_LOWER_FLAG = abi.encodeWithSelector(FlagsInterface.lowerFlag.selector, FLAG_ARBITRUM_SEQ_OFFLINE);
address private s_l2FlagsAddress;
IInbox private s_inbox;
AccessControllerInterface private s_gasConfigAccessController;
GasConfiguration private s_gasConfig;
/**
* @notice emitted when a new gas configuration is set
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param refundableAddress address where gas excess on L2 will be sent
*/
event GasConfigurationSet(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address indexed refundableAddress
);
/**
* @notice emitted when a new gas access-control contract is set
* @param previous the address prior to the current setting
* @param current the address of the new access-control contract
*/
event GasAccessControllerSet(
address indexed previous,
address indexed current
);
/**
* @param inboxAddress address of the Arbitrum Inbox L1 contract
* @param l2FlagsAddress address of the Chainlink L2 Flags contract
* @param gasConfigAccessControllerAddress address of the access controller for managing gas price on Arbitrum
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param gasLimitL2 gas limit for immediate L2 execution attempt. A value around 1M should be sufficient
* @param refundableAddress address where gas excess on L2 will be sent
*/
constructor(
address inboxAddress,
address l2FlagsAddress,
address gasConfigAccessControllerAddress,
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
) {
require(inboxAddress != address(0), "Invalid Inbox contract address");
require(l2FlagsAddress != address(0), "Invalid Flags contract address");
s_inbox = IInbox(inboxAddress);
s_gasConfigAccessController = AccessControllerInterface(gasConfigAccessControllerAddress);
s_l2FlagsAddress = l2FlagsAddress;
_setGasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
/**
* @notice versions:
*
* - ArbitrumValidator 0.1.0: initial release
*
* @inheritdoc TypeAndVersionInterface
*/
function typeAndVersion()
external
pure
virtual
override
returns (
string memory
)
{
return "ArbitrumValidator 0.1.0";
}
/// @return L2 Flags contract address
function l2Flags()
external
view
virtual
returns (address)
{
return s_l2FlagsAddress;
}
/// @return Arbitrum Inbox contract address
function inbox()
external
view
virtual
returns (address)
{
return address(s_inbox);
}
/// @return gas config AccessControllerInterface contract address
function gasConfigAccessController()
external
view
virtual
returns (address)
{
return address(s_gasConfigAccessController);
}
/// @return stored GasConfiguration
function gasConfig()
external
view
virtual
returns (GasConfiguration memory)
{
return s_gasConfig;
}
/// @notice makes this contract payable as it need funds to pay for L2 transactions fees on L1.
receive() external payable {}
/**
* @notice withdraws all funds availbale in this contract to the msg.sender
* @dev only owner can call this
*/
function withdrawFunds()
external
onlyOwner()
{
address payable to = payable(msg.sender);
to.transfer(address(this).balance);
}
/**
* @notice withdraws all funds availbale in this contract to the address specified
* @dev only owner can call this
* @param to address where to send the funds
*/
function withdrawFundsTo(
address payable to
)
external
onlyOwner()
{
to.transfer(address(this).balance);
}
/**
* @notice sets gas config AccessControllerInterface contract
* @dev only owner can call this
* @param accessController new AccessControllerInterface contract address
*/
function setGasAccessController(
address accessController
)
external
onlyOwner
{
_setGasAccessController(accessController);
}
/**
* @notice sets Arbitrum gas configuration
* @dev access control provided by s_gasConfigAccessController
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param gasLimitL2 gas limit for immediate L2 execution attempt. A value around 1M should be sufficient
* @param refundableAddress address where gas excess on L2 will be sent
*/
function setGasConfiguration(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
)
external
{
require(s_gasConfigAccessController.hasAccess(msg.sender, msg.data), "Access required to set config");
_setGasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
/**
* @notice validate method updates the state of an L2 Flag in case of change on the Arbitrum Sequencer.
* A one answer considers the service as offline.
* In case the previous answer is the same as the current it does not trigger any tx on L2. In other case,
* a retryable ticket is created on the Arbitrum L1 Inbox contract. The tx gas fee can be paid from this
* contract providing a value, or the same address on L2.
* @dev access control provided internally by SimpleWriteAccessController
* @param previousAnswer previous aggregator answer
* @param currentAnswer new aggregator answer
*/
function validate(
uint256 /* previousRoundId */,
int256 previousAnswer,
uint256 /* currentRoundId */,
int256 currentAnswer
)
external
override
checkAccess()
returns (bool)
{
// Avoids resending to L2 the same tx on every call
if (previousAnswer == currentAnswer) {
return true;
}
int isServiceOffline = 1;
// NOTICE: if gasCostL2 is zero the payment is processed on L2 so the L2 address needs to be funded, as it will
// paying the fee. We also ignore the returned msg number, that can be queried via the InboxMessageDelivered event.
s_inbox.createRetryableTicket{value: s_gasConfig.gasCostL2}(
s_l2FlagsAddress,
0, // L2 call value
// NOTICE: maxSubmissionCost info will possibly become available on L1 after the London fork. At that time this
// contract could start querying/calculating it directly so we wouldn't need to configure it statically. On L2 this
// info is available via `ArbRetryableTx.getSubmissionPrice`.
s_gasConfig.maxSubmissionCost, // Max submission cost of sending data length
s_gasConfig.refundableAddress, // excessFeeRefundAddress
s_gasConfig.refundableAddress, // callValueRefundAddress
s_gasConfig.gasLimitL2,
s_gasConfig.maxGasPrice,
currentAnswer == isServiceOffline ? CALL_RAISE_FLAG : CALL_LOWER_FLAG
);
return true;
}
function _setGasConfiguration(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
)
internal
{
// L2 will pay the fee if gasCostL2 is zero
if (gasCostL2 > 0) {
uint256 minGasCostValue = maxSubmissionCost + gasLimitL2 * maxGasPrice;
require(gasCostL2 >= minGasCostValue, "Gas cost provided is too low");
}
s_gasConfig = GasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
emit GasConfigurationSet(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
function _setGasAccessController(
address accessController
)
internal
{
address previousAccessController = address(s_gasConfigAccessController);
if (accessController != previousAccessController) {
s_gasConfigAccessController = AccessControllerInterface(accessController);
emit GasAccessControllerSet(previousAccessController, accessController);
}
}
} | /**
* @title ArbitrumValidator
* @notice Allows to raise and lower Flags on the Arbitrum network through its Layer 1 contracts
* - The internal AccessController controls the access of the validate method
* - Gas configuration is controlled by a configurable external SimpleWriteAccessController
* - Funds on the contract are managed by the owner
*/ | NatSpecMultiLine | withdrawFundsTo | function withdrawFundsTo(
address payable to
)
external
onlyOwner()
{
to.transfer(address(this).balance);
}
| /**
* @notice withdraws all funds availbale in this contract to the address specified
* @dev only owner can call this
* @param to address where to send the funds
*/ | NatSpecMultiLine | v0.8.6+commit.11564f7e | MIT | {
"func_code_index": [
4656,
4788
]
} | 7,115 |
|
ArbitrumValidator | src/v0.8/dev/ArbitrumValidator.sol | 0x29cd92f343f9d81e74fae28913b038a81005b46f | Solidity | ArbitrumValidator | contract ArbitrumValidator is TypeAndVersionInterface, AggregatorValidatorInterface, SimpleWriteAccessController {
// Config for L1 -> L2 `createRetryableTicket` call
struct GasConfiguration {
uint256 maxSubmissionCost;
uint256 maxGasPrice;
uint256 gasCostL2;
uint256 gasLimitL2;
address refundableAddress;
}
/// @dev Follows: https://eips.ethereum.org/EIPS/eip-1967
address constant private FLAG_ARBITRUM_SEQ_OFFLINE = address(bytes20(bytes32(uint256(keccak256("chainlink.flags.arbitrum-seq-offline")) - 1)));
bytes constant private CALL_RAISE_FLAG = abi.encodeWithSelector(FlagsInterface.raiseFlag.selector, FLAG_ARBITRUM_SEQ_OFFLINE);
bytes constant private CALL_LOWER_FLAG = abi.encodeWithSelector(FlagsInterface.lowerFlag.selector, FLAG_ARBITRUM_SEQ_OFFLINE);
address private s_l2FlagsAddress;
IInbox private s_inbox;
AccessControllerInterface private s_gasConfigAccessController;
GasConfiguration private s_gasConfig;
/**
* @notice emitted when a new gas configuration is set
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param refundableAddress address where gas excess on L2 will be sent
*/
event GasConfigurationSet(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address indexed refundableAddress
);
/**
* @notice emitted when a new gas access-control contract is set
* @param previous the address prior to the current setting
* @param current the address of the new access-control contract
*/
event GasAccessControllerSet(
address indexed previous,
address indexed current
);
/**
* @param inboxAddress address of the Arbitrum Inbox L1 contract
* @param l2FlagsAddress address of the Chainlink L2 Flags contract
* @param gasConfigAccessControllerAddress address of the access controller for managing gas price on Arbitrum
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param gasLimitL2 gas limit for immediate L2 execution attempt. A value around 1M should be sufficient
* @param refundableAddress address where gas excess on L2 will be sent
*/
constructor(
address inboxAddress,
address l2FlagsAddress,
address gasConfigAccessControllerAddress,
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
) {
require(inboxAddress != address(0), "Invalid Inbox contract address");
require(l2FlagsAddress != address(0), "Invalid Flags contract address");
s_inbox = IInbox(inboxAddress);
s_gasConfigAccessController = AccessControllerInterface(gasConfigAccessControllerAddress);
s_l2FlagsAddress = l2FlagsAddress;
_setGasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
/**
* @notice versions:
*
* - ArbitrumValidator 0.1.0: initial release
*
* @inheritdoc TypeAndVersionInterface
*/
function typeAndVersion()
external
pure
virtual
override
returns (
string memory
)
{
return "ArbitrumValidator 0.1.0";
}
/// @return L2 Flags contract address
function l2Flags()
external
view
virtual
returns (address)
{
return s_l2FlagsAddress;
}
/// @return Arbitrum Inbox contract address
function inbox()
external
view
virtual
returns (address)
{
return address(s_inbox);
}
/// @return gas config AccessControllerInterface contract address
function gasConfigAccessController()
external
view
virtual
returns (address)
{
return address(s_gasConfigAccessController);
}
/// @return stored GasConfiguration
function gasConfig()
external
view
virtual
returns (GasConfiguration memory)
{
return s_gasConfig;
}
/// @notice makes this contract payable as it need funds to pay for L2 transactions fees on L1.
receive() external payable {}
/**
* @notice withdraws all funds availbale in this contract to the msg.sender
* @dev only owner can call this
*/
function withdrawFunds()
external
onlyOwner()
{
address payable to = payable(msg.sender);
to.transfer(address(this).balance);
}
/**
* @notice withdraws all funds availbale in this contract to the address specified
* @dev only owner can call this
* @param to address where to send the funds
*/
function withdrawFundsTo(
address payable to
)
external
onlyOwner()
{
to.transfer(address(this).balance);
}
/**
* @notice sets gas config AccessControllerInterface contract
* @dev only owner can call this
* @param accessController new AccessControllerInterface contract address
*/
function setGasAccessController(
address accessController
)
external
onlyOwner
{
_setGasAccessController(accessController);
}
/**
* @notice sets Arbitrum gas configuration
* @dev access control provided by s_gasConfigAccessController
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param gasLimitL2 gas limit for immediate L2 execution attempt. A value around 1M should be sufficient
* @param refundableAddress address where gas excess on L2 will be sent
*/
function setGasConfiguration(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
)
external
{
require(s_gasConfigAccessController.hasAccess(msg.sender, msg.data), "Access required to set config");
_setGasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
/**
* @notice validate method updates the state of an L2 Flag in case of change on the Arbitrum Sequencer.
* A one answer considers the service as offline.
* In case the previous answer is the same as the current it does not trigger any tx on L2. In other case,
* a retryable ticket is created on the Arbitrum L1 Inbox contract. The tx gas fee can be paid from this
* contract providing a value, or the same address on L2.
* @dev access control provided internally by SimpleWriteAccessController
* @param previousAnswer previous aggregator answer
* @param currentAnswer new aggregator answer
*/
function validate(
uint256 /* previousRoundId */,
int256 previousAnswer,
uint256 /* currentRoundId */,
int256 currentAnswer
)
external
override
checkAccess()
returns (bool)
{
// Avoids resending to L2 the same tx on every call
if (previousAnswer == currentAnswer) {
return true;
}
int isServiceOffline = 1;
// NOTICE: if gasCostL2 is zero the payment is processed on L2 so the L2 address needs to be funded, as it will
// paying the fee. We also ignore the returned msg number, that can be queried via the InboxMessageDelivered event.
s_inbox.createRetryableTicket{value: s_gasConfig.gasCostL2}(
s_l2FlagsAddress,
0, // L2 call value
// NOTICE: maxSubmissionCost info will possibly become available on L1 after the London fork. At that time this
// contract could start querying/calculating it directly so we wouldn't need to configure it statically. On L2 this
// info is available via `ArbRetryableTx.getSubmissionPrice`.
s_gasConfig.maxSubmissionCost, // Max submission cost of sending data length
s_gasConfig.refundableAddress, // excessFeeRefundAddress
s_gasConfig.refundableAddress, // callValueRefundAddress
s_gasConfig.gasLimitL2,
s_gasConfig.maxGasPrice,
currentAnswer == isServiceOffline ? CALL_RAISE_FLAG : CALL_LOWER_FLAG
);
return true;
}
function _setGasConfiguration(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
)
internal
{
// L2 will pay the fee if gasCostL2 is zero
if (gasCostL2 > 0) {
uint256 minGasCostValue = maxSubmissionCost + gasLimitL2 * maxGasPrice;
require(gasCostL2 >= minGasCostValue, "Gas cost provided is too low");
}
s_gasConfig = GasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
emit GasConfigurationSet(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
function _setGasAccessController(
address accessController
)
internal
{
address previousAccessController = address(s_gasConfigAccessController);
if (accessController != previousAccessController) {
s_gasConfigAccessController = AccessControllerInterface(accessController);
emit GasAccessControllerSet(previousAccessController, accessController);
}
}
} | /**
* @title ArbitrumValidator
* @notice Allows to raise and lower Flags on the Arbitrum network through its Layer 1 contracts
* - The internal AccessController controls the access of the validate method
* - Gas configuration is controlled by a configurable external SimpleWriteAccessController
* - Funds on the contract are managed by the owner
*/ | NatSpecMultiLine | setGasAccessController | function setGasAccessController(
address accessController
)
external
onlyOwner
{
_setGasAccessController(accessController);
}
| /**
* @notice sets gas config AccessControllerInterface contract
* @dev only owner can call this
* @param accessController new AccessControllerInterface contract address
*/ | NatSpecMultiLine | v0.8.6+commit.11564f7e | MIT | {
"func_code_index": [
4977,
5126
]
} | 7,116 |
|
ArbitrumValidator | src/v0.8/dev/ArbitrumValidator.sol | 0x29cd92f343f9d81e74fae28913b038a81005b46f | Solidity | ArbitrumValidator | contract ArbitrumValidator is TypeAndVersionInterface, AggregatorValidatorInterface, SimpleWriteAccessController {
// Config for L1 -> L2 `createRetryableTicket` call
struct GasConfiguration {
uint256 maxSubmissionCost;
uint256 maxGasPrice;
uint256 gasCostL2;
uint256 gasLimitL2;
address refundableAddress;
}
/// @dev Follows: https://eips.ethereum.org/EIPS/eip-1967
address constant private FLAG_ARBITRUM_SEQ_OFFLINE = address(bytes20(bytes32(uint256(keccak256("chainlink.flags.arbitrum-seq-offline")) - 1)));
bytes constant private CALL_RAISE_FLAG = abi.encodeWithSelector(FlagsInterface.raiseFlag.selector, FLAG_ARBITRUM_SEQ_OFFLINE);
bytes constant private CALL_LOWER_FLAG = abi.encodeWithSelector(FlagsInterface.lowerFlag.selector, FLAG_ARBITRUM_SEQ_OFFLINE);
address private s_l2FlagsAddress;
IInbox private s_inbox;
AccessControllerInterface private s_gasConfigAccessController;
GasConfiguration private s_gasConfig;
/**
* @notice emitted when a new gas configuration is set
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param refundableAddress address where gas excess on L2 will be sent
*/
event GasConfigurationSet(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address indexed refundableAddress
);
/**
* @notice emitted when a new gas access-control contract is set
* @param previous the address prior to the current setting
* @param current the address of the new access-control contract
*/
event GasAccessControllerSet(
address indexed previous,
address indexed current
);
/**
* @param inboxAddress address of the Arbitrum Inbox L1 contract
* @param l2FlagsAddress address of the Chainlink L2 Flags contract
* @param gasConfigAccessControllerAddress address of the access controller for managing gas price on Arbitrum
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param gasLimitL2 gas limit for immediate L2 execution attempt. A value around 1M should be sufficient
* @param refundableAddress address where gas excess on L2 will be sent
*/
constructor(
address inboxAddress,
address l2FlagsAddress,
address gasConfigAccessControllerAddress,
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
) {
require(inboxAddress != address(0), "Invalid Inbox contract address");
require(l2FlagsAddress != address(0), "Invalid Flags contract address");
s_inbox = IInbox(inboxAddress);
s_gasConfigAccessController = AccessControllerInterface(gasConfigAccessControllerAddress);
s_l2FlagsAddress = l2FlagsAddress;
_setGasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
/**
* @notice versions:
*
* - ArbitrumValidator 0.1.0: initial release
*
* @inheritdoc TypeAndVersionInterface
*/
function typeAndVersion()
external
pure
virtual
override
returns (
string memory
)
{
return "ArbitrumValidator 0.1.0";
}
/// @return L2 Flags contract address
function l2Flags()
external
view
virtual
returns (address)
{
return s_l2FlagsAddress;
}
/// @return Arbitrum Inbox contract address
function inbox()
external
view
virtual
returns (address)
{
return address(s_inbox);
}
/// @return gas config AccessControllerInterface contract address
function gasConfigAccessController()
external
view
virtual
returns (address)
{
return address(s_gasConfigAccessController);
}
/// @return stored GasConfiguration
function gasConfig()
external
view
virtual
returns (GasConfiguration memory)
{
return s_gasConfig;
}
/// @notice makes this contract payable as it need funds to pay for L2 transactions fees on L1.
receive() external payable {}
/**
* @notice withdraws all funds availbale in this contract to the msg.sender
* @dev only owner can call this
*/
function withdrawFunds()
external
onlyOwner()
{
address payable to = payable(msg.sender);
to.transfer(address(this).balance);
}
/**
* @notice withdraws all funds availbale in this contract to the address specified
* @dev only owner can call this
* @param to address where to send the funds
*/
function withdrawFundsTo(
address payable to
)
external
onlyOwner()
{
to.transfer(address(this).balance);
}
/**
* @notice sets gas config AccessControllerInterface contract
* @dev only owner can call this
* @param accessController new AccessControllerInterface contract address
*/
function setGasAccessController(
address accessController
)
external
onlyOwner
{
_setGasAccessController(accessController);
}
/**
* @notice sets Arbitrum gas configuration
* @dev access control provided by s_gasConfigAccessController
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param gasLimitL2 gas limit for immediate L2 execution attempt. A value around 1M should be sufficient
* @param refundableAddress address where gas excess on L2 will be sent
*/
function setGasConfiguration(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
)
external
{
require(s_gasConfigAccessController.hasAccess(msg.sender, msg.data), "Access required to set config");
_setGasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
/**
* @notice validate method updates the state of an L2 Flag in case of change on the Arbitrum Sequencer.
* A one answer considers the service as offline.
* In case the previous answer is the same as the current it does not trigger any tx on L2. In other case,
* a retryable ticket is created on the Arbitrum L1 Inbox contract. The tx gas fee can be paid from this
* contract providing a value, or the same address on L2.
* @dev access control provided internally by SimpleWriteAccessController
* @param previousAnswer previous aggregator answer
* @param currentAnswer new aggregator answer
*/
function validate(
uint256 /* previousRoundId */,
int256 previousAnswer,
uint256 /* currentRoundId */,
int256 currentAnswer
)
external
override
checkAccess()
returns (bool)
{
// Avoids resending to L2 the same tx on every call
if (previousAnswer == currentAnswer) {
return true;
}
int isServiceOffline = 1;
// NOTICE: if gasCostL2 is zero the payment is processed on L2 so the L2 address needs to be funded, as it will
// paying the fee. We also ignore the returned msg number, that can be queried via the InboxMessageDelivered event.
s_inbox.createRetryableTicket{value: s_gasConfig.gasCostL2}(
s_l2FlagsAddress,
0, // L2 call value
// NOTICE: maxSubmissionCost info will possibly become available on L1 after the London fork. At that time this
// contract could start querying/calculating it directly so we wouldn't need to configure it statically. On L2 this
// info is available via `ArbRetryableTx.getSubmissionPrice`.
s_gasConfig.maxSubmissionCost, // Max submission cost of sending data length
s_gasConfig.refundableAddress, // excessFeeRefundAddress
s_gasConfig.refundableAddress, // callValueRefundAddress
s_gasConfig.gasLimitL2,
s_gasConfig.maxGasPrice,
currentAnswer == isServiceOffline ? CALL_RAISE_FLAG : CALL_LOWER_FLAG
);
return true;
}
function _setGasConfiguration(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
)
internal
{
// L2 will pay the fee if gasCostL2 is zero
if (gasCostL2 > 0) {
uint256 minGasCostValue = maxSubmissionCost + gasLimitL2 * maxGasPrice;
require(gasCostL2 >= minGasCostValue, "Gas cost provided is too low");
}
s_gasConfig = GasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
emit GasConfigurationSet(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
function _setGasAccessController(
address accessController
)
internal
{
address previousAccessController = address(s_gasConfigAccessController);
if (accessController != previousAccessController) {
s_gasConfigAccessController = AccessControllerInterface(accessController);
emit GasAccessControllerSet(previousAccessController, accessController);
}
}
} | /**
* @title ArbitrumValidator
* @notice Allows to raise and lower Flags on the Arbitrum network through its Layer 1 contracts
* - The internal AccessController controls the access of the validate method
* - Gas configuration is controlled by a configurable external SimpleWriteAccessController
* - Funds on the contract are managed by the owner
*/ | NatSpecMultiLine | setGasConfiguration | function setGasConfiguration(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
)
external
{
require(s_gasConfigAccessController.hasAccess(msg.sender, msg.data), "Access required to set config");
_setGasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
| /**
* @notice sets Arbitrum gas configuration
* @dev access control provided by s_gasConfigAccessController
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param gasLimitL2 gas limit for immediate L2 execution attempt. A value around 1M should be sufficient
* @param refundableAddress address where gas excess on L2 will be sent
*/ | NatSpecMultiLine | v0.8.6+commit.11564f7e | MIT | {
"func_code_index": [
5610,
6006
]
} | 7,117 |
|
ArbitrumValidator | src/v0.8/dev/ArbitrumValidator.sol | 0x29cd92f343f9d81e74fae28913b038a81005b46f | Solidity | ArbitrumValidator | contract ArbitrumValidator is TypeAndVersionInterface, AggregatorValidatorInterface, SimpleWriteAccessController {
// Config for L1 -> L2 `createRetryableTicket` call
struct GasConfiguration {
uint256 maxSubmissionCost;
uint256 maxGasPrice;
uint256 gasCostL2;
uint256 gasLimitL2;
address refundableAddress;
}
/// @dev Follows: https://eips.ethereum.org/EIPS/eip-1967
address constant private FLAG_ARBITRUM_SEQ_OFFLINE = address(bytes20(bytes32(uint256(keccak256("chainlink.flags.arbitrum-seq-offline")) - 1)));
bytes constant private CALL_RAISE_FLAG = abi.encodeWithSelector(FlagsInterface.raiseFlag.selector, FLAG_ARBITRUM_SEQ_OFFLINE);
bytes constant private CALL_LOWER_FLAG = abi.encodeWithSelector(FlagsInterface.lowerFlag.selector, FLAG_ARBITRUM_SEQ_OFFLINE);
address private s_l2FlagsAddress;
IInbox private s_inbox;
AccessControllerInterface private s_gasConfigAccessController;
GasConfiguration private s_gasConfig;
/**
* @notice emitted when a new gas configuration is set
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param refundableAddress address where gas excess on L2 will be sent
*/
event GasConfigurationSet(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address indexed refundableAddress
);
/**
* @notice emitted when a new gas access-control contract is set
* @param previous the address prior to the current setting
* @param current the address of the new access-control contract
*/
event GasAccessControllerSet(
address indexed previous,
address indexed current
);
/**
* @param inboxAddress address of the Arbitrum Inbox L1 contract
* @param l2FlagsAddress address of the Chainlink L2 Flags contract
* @param gasConfigAccessControllerAddress address of the access controller for managing gas price on Arbitrum
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param gasLimitL2 gas limit for immediate L2 execution attempt. A value around 1M should be sufficient
* @param refundableAddress address where gas excess on L2 will be sent
*/
constructor(
address inboxAddress,
address l2FlagsAddress,
address gasConfigAccessControllerAddress,
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
) {
require(inboxAddress != address(0), "Invalid Inbox contract address");
require(l2FlagsAddress != address(0), "Invalid Flags contract address");
s_inbox = IInbox(inboxAddress);
s_gasConfigAccessController = AccessControllerInterface(gasConfigAccessControllerAddress);
s_l2FlagsAddress = l2FlagsAddress;
_setGasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
/**
* @notice versions:
*
* - ArbitrumValidator 0.1.0: initial release
*
* @inheritdoc TypeAndVersionInterface
*/
function typeAndVersion()
external
pure
virtual
override
returns (
string memory
)
{
return "ArbitrumValidator 0.1.0";
}
/// @return L2 Flags contract address
function l2Flags()
external
view
virtual
returns (address)
{
return s_l2FlagsAddress;
}
/// @return Arbitrum Inbox contract address
function inbox()
external
view
virtual
returns (address)
{
return address(s_inbox);
}
/// @return gas config AccessControllerInterface contract address
function gasConfigAccessController()
external
view
virtual
returns (address)
{
return address(s_gasConfigAccessController);
}
/// @return stored GasConfiguration
function gasConfig()
external
view
virtual
returns (GasConfiguration memory)
{
return s_gasConfig;
}
/// @notice makes this contract payable as it need funds to pay for L2 transactions fees on L1.
receive() external payable {}
/**
* @notice withdraws all funds availbale in this contract to the msg.sender
* @dev only owner can call this
*/
function withdrawFunds()
external
onlyOwner()
{
address payable to = payable(msg.sender);
to.transfer(address(this).balance);
}
/**
* @notice withdraws all funds availbale in this contract to the address specified
* @dev only owner can call this
* @param to address where to send the funds
*/
function withdrawFundsTo(
address payable to
)
external
onlyOwner()
{
to.transfer(address(this).balance);
}
/**
* @notice sets gas config AccessControllerInterface contract
* @dev only owner can call this
* @param accessController new AccessControllerInterface contract address
*/
function setGasAccessController(
address accessController
)
external
onlyOwner
{
_setGasAccessController(accessController);
}
/**
* @notice sets Arbitrum gas configuration
* @dev access control provided by s_gasConfigAccessController
* @param maxSubmissionCost maximum cost willing to pay on L2
* @param maxGasPrice maximum gas price to pay on L2
* @param gasCostL2 value to send to L2 to cover gas fee
* @param gasLimitL2 gas limit for immediate L2 execution attempt. A value around 1M should be sufficient
* @param refundableAddress address where gas excess on L2 will be sent
*/
function setGasConfiguration(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
)
external
{
require(s_gasConfigAccessController.hasAccess(msg.sender, msg.data), "Access required to set config");
_setGasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
/**
* @notice validate method updates the state of an L2 Flag in case of change on the Arbitrum Sequencer.
* A one answer considers the service as offline.
* In case the previous answer is the same as the current it does not trigger any tx on L2. In other case,
* a retryable ticket is created on the Arbitrum L1 Inbox contract. The tx gas fee can be paid from this
* contract providing a value, or the same address on L2.
* @dev access control provided internally by SimpleWriteAccessController
* @param previousAnswer previous aggregator answer
* @param currentAnswer new aggregator answer
*/
function validate(
uint256 /* previousRoundId */,
int256 previousAnswer,
uint256 /* currentRoundId */,
int256 currentAnswer
)
external
override
checkAccess()
returns (bool)
{
// Avoids resending to L2 the same tx on every call
if (previousAnswer == currentAnswer) {
return true;
}
int isServiceOffline = 1;
// NOTICE: if gasCostL2 is zero the payment is processed on L2 so the L2 address needs to be funded, as it will
// paying the fee. We also ignore the returned msg number, that can be queried via the InboxMessageDelivered event.
s_inbox.createRetryableTicket{value: s_gasConfig.gasCostL2}(
s_l2FlagsAddress,
0, // L2 call value
// NOTICE: maxSubmissionCost info will possibly become available on L1 after the London fork. At that time this
// contract could start querying/calculating it directly so we wouldn't need to configure it statically. On L2 this
// info is available via `ArbRetryableTx.getSubmissionPrice`.
s_gasConfig.maxSubmissionCost, // Max submission cost of sending data length
s_gasConfig.refundableAddress, // excessFeeRefundAddress
s_gasConfig.refundableAddress, // callValueRefundAddress
s_gasConfig.gasLimitL2,
s_gasConfig.maxGasPrice,
currentAnswer == isServiceOffline ? CALL_RAISE_FLAG : CALL_LOWER_FLAG
);
return true;
}
function _setGasConfiguration(
uint256 maxSubmissionCost,
uint256 maxGasPrice,
uint256 gasCostL2,
uint256 gasLimitL2,
address refundableAddress
)
internal
{
// L2 will pay the fee if gasCostL2 is zero
if (gasCostL2 > 0) {
uint256 minGasCostValue = maxSubmissionCost + gasLimitL2 * maxGasPrice;
require(gasCostL2 >= minGasCostValue, "Gas cost provided is too low");
}
s_gasConfig = GasConfiguration(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
emit GasConfigurationSet(maxSubmissionCost, maxGasPrice, gasCostL2, gasLimitL2, refundableAddress);
}
function _setGasAccessController(
address accessController
)
internal
{
address previousAccessController = address(s_gasConfigAccessController);
if (accessController != previousAccessController) {
s_gasConfigAccessController = AccessControllerInterface(accessController);
emit GasAccessControllerSet(previousAccessController, accessController);
}
}
} | /**
* @title ArbitrumValidator
* @notice Allows to raise and lower Flags on the Arbitrum network through its Layer 1 contracts
* - The internal AccessController controls the access of the validate method
* - Gas configuration is controlled by a configurable external SimpleWriteAccessController
* - Funds on the contract are managed by the owner
*/ | NatSpecMultiLine | validate | function validate(
uint256 /* previousRoundId */,
int256 previousAnswer,
uint256 /* currentRoundId */,
int256 currentAnswer
)
external
override
checkAccess()
returns (bool)
{
// Avoids resending to L2 the same tx on every call
if (previousAnswer == currentAnswer) {
return true;
}
int isServiceOffline = 1;
// NOTICE: if gasCostL2 is zero the payment is processed on L2 so the L2 address needs to be funded, as it will
// paying the fee. We also ignore the returned msg number, that can be queried via the InboxMessageDelivered event.
s_inbox.createRetryableTicket{value: s_gasConfig.gasCostL2}(
s_l2FlagsAddress,
0, // L2 call value
// NOTICE: maxSubmissionCost info will possibly become available on L1 after the London fork. At that time this
// contract could start querying/calculating it directly so we wouldn't need to configure it statically. On L2 this
// info is available via `ArbRetryableTx.getSubmissionPrice`.
s_gasConfig.maxSubmissionCost, // Max submission cost of sending data length
s_gasConfig.refundableAddress, // excessFeeRefundAddress
s_gasConfig.refundableAddress, // callValueRefundAddress
s_gasConfig.gasLimitL2,
s_gasConfig.maxGasPrice,
currentAnswer == isServiceOffline ? CALL_RAISE_FLAG : CALL_LOWER_FLAG
);
return true;
}
| /**
* @notice validate method updates the state of an L2 Flag in case of change on the Arbitrum Sequencer.
* A one answer considers the service as offline.
* In case the previous answer is the same as the current it does not trigger any tx on L2. In other case,
* a retryable ticket is created on the Arbitrum L1 Inbox contract. The tx gas fee can be paid from this
* contract providing a value, or the same address on L2.
* @dev access control provided internally by SimpleWriteAccessController
* @param previousAnswer previous aggregator answer
* @param currentAnswer new aggregator answer
*/ | NatSpecMultiLine | v0.8.6+commit.11564f7e | MIT | {
"func_code_index": [
6632,
8033
]
} | 7,118 |
|
BondingVault | contracts/BondingVault.sol | 0x8f540e6d91ce3296824a4e469ff5f01abf5d700c | Solidity | BondingVault | contract BondingVault is Secondary {
using SafeMath for uint256;
CommunityToken public communityToken;
BuyFormula public buyFormula;
LiquidationFormula public liquidationFormula;
event LogEthReceived(
uint256 amount,
address indexed account
);
event LogEthSent(
uint256 amount,
address indexed account
);
event LogTokenSell
(
address byWhom,
uint256 price,
uint256 amountOfEth
);
/**
* @dev funding bondingVault and not receiving tokens back is allowed
**/
function() external payable {
emit LogEthReceived(msg.value, msg.sender);
}
constructor(string memory _tokenName, string memory _tokenSymbol, address _buyFormulaAddress, address _liquidationFormulaAddress, uint256 _initialMint)
public payable{
communityToken = new CommunityToken(_tokenName, _tokenSymbol);
communityToken.mint(msg.sender, _initialMint);
buyFormula = BuyFormula(_buyFormulaAddress);
liquidationFormula = LiquidationFormula(_liquidationFormulaAddress);
}
function fundWithAward(address payable _donator) public payable onlyPrimary {
//calculate current 'buy' price for this donator
(uint256 price, uint256 _tokenAmount) = myBuyPrice(msg.value, _donator);
communityToken.mint(_donator, _tokenAmount);
emit LogEthReceived(msg.value, _donator);
}
function sell(uint256 _amount, address payable _donator) public onlyPrimary {
// calculate sell return
(uint256 price, uint256 amountOfEth) = mySellPrice(_amount, _donator);
communityToken.burnFrom(_donator, _amount);
_donator.transfer(amountOfEth);
emit LogEthSent(amountOfEth, _donator);
emit LogTokenSell(_donator, price, amountOfEth);
}
/**
* @dev Owner can withdraw the remaining ETH balance as long as amount of minted tokens is
* less than 1 token (due to possible rounding leftovers)
*
*/
function sweepVault(address payable _operator) public onlyPrimary {
//1 initially minted + 1 possible rounding corrections
require(communityToken.totalSupply() < 2 ether, 'Sweep available only if no minted tokens left');
require(address(this).balance > 0, 'Vault is empty');
_operator.transfer(address(this).balance);
emit LogEthSent(address(this).balance, _operator);
}
function myBuyPrice(uint256 _ethAmount, address payable _donator) public onlyPrimary
view returns (uint256 finalPrice, uint256 tokenAmount) {
uint256 _tokenSupply = communityToken.totalSupply();
uint256 _ethInVault = address(this).balance;
uint256 _tokenBalance = communityToken.balanceOf(_donator);
return buyFormula.applyFormula(_ethAmount, _tokenBalance, _tokenSupply, _ethInVault);
}
function mySellPrice(uint256 _tokenAmount, address payable _donator) public onlyPrimary
view returns (uint256 finalPrice, uint256 redeemableEth) {
uint256 _tokenBalance = communityToken.balanceOf(_donator);
require(_tokenAmount > 0 && _tokenBalance >= _tokenAmount, "Amount needs to be > 0 and tokenBalance >= amount to sell");
uint256 _tokenSupply = communityToken.totalSupply();
uint256 _ethInVault = address(this).balance;
return liquidationFormula.applyFormula(_tokenAmount, _tokenBalance, _tokenSupply, _ethInVault);
}
function getCommunityToken() public view onlyPrimary returns (address) {
return address(communityToken);
}
function setBuyFormula(address _newBuyFormula) public onlyPrimary {
buyFormula = BuyFormula(_newBuyFormula);
}
function setSellFormula(address _newSellFormula) public onlyPrimary {
liquidationFormula = LiquidationFormula(_newSellFormula);
}
} | /**
* @title BondingVault
* @dev Vault which holds (a part) of the donations and mints the tokens to the donators in return.
* Actual funding and liquidation calls come from the community contract.
* The logic of price (both award and liquidation) calculation is delegated to 2 corresponding formulas
*
*/ | NatSpecMultiLine | function() external payable {
emit LogEthReceived(msg.value, msg.sender);
}
| /**
* @dev funding bondingVault and not receiving tokens back is allowed
**/ | NatSpecMultiLine | v0.5.2+commit.1df8f40c | None | bzzr://bf639f6bbcc8e97f4643fda25bf8b031922ec55ccc27074e351e5c96b256ea1f | {
"func_code_index": [
601,
695
]
} | 7,119 |
|
BondingVault | contracts/BondingVault.sol | 0x8f540e6d91ce3296824a4e469ff5f01abf5d700c | Solidity | BondingVault | contract BondingVault is Secondary {
using SafeMath for uint256;
CommunityToken public communityToken;
BuyFormula public buyFormula;
LiquidationFormula public liquidationFormula;
event LogEthReceived(
uint256 amount,
address indexed account
);
event LogEthSent(
uint256 amount,
address indexed account
);
event LogTokenSell
(
address byWhom,
uint256 price,
uint256 amountOfEth
);
/**
* @dev funding bondingVault and not receiving tokens back is allowed
**/
function() external payable {
emit LogEthReceived(msg.value, msg.sender);
}
constructor(string memory _tokenName, string memory _tokenSymbol, address _buyFormulaAddress, address _liquidationFormulaAddress, uint256 _initialMint)
public payable{
communityToken = new CommunityToken(_tokenName, _tokenSymbol);
communityToken.mint(msg.sender, _initialMint);
buyFormula = BuyFormula(_buyFormulaAddress);
liquidationFormula = LiquidationFormula(_liquidationFormulaAddress);
}
function fundWithAward(address payable _donator) public payable onlyPrimary {
//calculate current 'buy' price for this donator
(uint256 price, uint256 _tokenAmount) = myBuyPrice(msg.value, _donator);
communityToken.mint(_donator, _tokenAmount);
emit LogEthReceived(msg.value, _donator);
}
function sell(uint256 _amount, address payable _donator) public onlyPrimary {
// calculate sell return
(uint256 price, uint256 amountOfEth) = mySellPrice(_amount, _donator);
communityToken.burnFrom(_donator, _amount);
_donator.transfer(amountOfEth);
emit LogEthSent(amountOfEth, _donator);
emit LogTokenSell(_donator, price, amountOfEth);
}
/**
* @dev Owner can withdraw the remaining ETH balance as long as amount of minted tokens is
* less than 1 token (due to possible rounding leftovers)
*
*/
function sweepVault(address payable _operator) public onlyPrimary {
//1 initially minted + 1 possible rounding corrections
require(communityToken.totalSupply() < 2 ether, 'Sweep available only if no minted tokens left');
require(address(this).balance > 0, 'Vault is empty');
_operator.transfer(address(this).balance);
emit LogEthSent(address(this).balance, _operator);
}
function myBuyPrice(uint256 _ethAmount, address payable _donator) public onlyPrimary
view returns (uint256 finalPrice, uint256 tokenAmount) {
uint256 _tokenSupply = communityToken.totalSupply();
uint256 _ethInVault = address(this).balance;
uint256 _tokenBalance = communityToken.balanceOf(_donator);
return buyFormula.applyFormula(_ethAmount, _tokenBalance, _tokenSupply, _ethInVault);
}
function mySellPrice(uint256 _tokenAmount, address payable _donator) public onlyPrimary
view returns (uint256 finalPrice, uint256 redeemableEth) {
uint256 _tokenBalance = communityToken.balanceOf(_donator);
require(_tokenAmount > 0 && _tokenBalance >= _tokenAmount, "Amount needs to be > 0 and tokenBalance >= amount to sell");
uint256 _tokenSupply = communityToken.totalSupply();
uint256 _ethInVault = address(this).balance;
return liquidationFormula.applyFormula(_tokenAmount, _tokenBalance, _tokenSupply, _ethInVault);
}
function getCommunityToken() public view onlyPrimary returns (address) {
return address(communityToken);
}
function setBuyFormula(address _newBuyFormula) public onlyPrimary {
buyFormula = BuyFormula(_newBuyFormula);
}
function setSellFormula(address _newSellFormula) public onlyPrimary {
liquidationFormula = LiquidationFormula(_newSellFormula);
}
} | /**
* @title BondingVault
* @dev Vault which holds (a part) of the donations and mints the tokens to the donators in return.
* Actual funding and liquidation calls come from the community contract.
* The logic of price (both award and liquidation) calculation is delegated to 2 corresponding formulas
*
*/ | NatSpecMultiLine | sweepVault | function sweepVault(address payable _operator) public onlyPrimary {
//1 initially minted + 1 possible rounding corrections
require(communityToken.totalSupply() < 2 ether, 'Sweep available only if no minted tokens left');
require(address(this).balance > 0, 'Vault is empty');
_operator.transfer(address(this).balance);
emit LogEthSent(address(this).balance, _operator);
}
| /**
* @dev Owner can withdraw the remaining ETH balance as long as amount of minted tokens is
* less than 1 token (due to possible rounding leftovers)
*
*/ | NatSpecMultiLine | v0.5.2+commit.1df8f40c | None | bzzr://bf639f6bbcc8e97f4643fda25bf8b031922ec55ccc27074e351e5c96b256ea1f | {
"func_code_index": [
2076,
2501
]
} | 7,120 |
BRBT | BRBT.sol | 0x17a644bf6006ed98631c987afbe0da2e3c5ca02f | Solidity | BRBT | contract BRBT is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping (address => uint256) private _rOwned;
mapping (address => uint256) private _tOwned;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _isExcludedFromFee;
mapping (address => User) private cooldown;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1e12 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private constant _name = unicode"BritneyBitch";
string private constant _symbol = unicode"BRBT";
uint8 private constant _decimals = 9;
uint256 private _taxFee = 2;
uint256 private _teamFee = 8;
uint256 private _feeRate = 5;
uint256 private _feeMultiplier = 1000;
uint256 private _launchTime;
uint256 private _previousTaxFee = _taxFee;
uint256 private _previousteamFee = _teamFee;
uint256 private _maxBuyAmount;
address payable private _FeeAddress;
address payable private _marketingWalletAddress;
IUniswapV2Router02 private uniswapV2Router;
address private uniswapV2Pair;
bool private tradingOpen;
bool private _cooldownEnabled = true;
bool private inSwap = false;
bool private _useImpactFeeSetter = true;
uint256 private buyLimitEnd;
struct User {
uint256 buy;
uint256 sell;
bool exists;
}
event MaxBuyAmountUpdated(uint _maxBuyAmount);
event CooldownEnabledUpdated(bool _cooldown);
event FeeMultiplierUpdated(uint _multiplier);
event FeeRateUpdated(uint _rate);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor (address payable FeeAddress, address payable marketingWalletAddress) {
_FeeAddress = FeeAddress;
_marketingWalletAddress = marketingWalletAddress;
_rOwned[_msgSender()] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[FeeAddress] = true;
_isExcludedFromFee[marketingWalletAddress] = true;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function name() public pure returns (string memory) {
return _name;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function decimals() public pure returns (uint8) {
return _decimals;
}
function totalSupply() public pure override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
return tokenFromReflection(_rOwned[account]);
}
function transfer(address recipient, uint256 amount) public override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function tokenFromReflection(uint256 rAmount) private view returns(uint256) {
require(rAmount <= _rTotal, "Amount must be less than total reflections");
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
function removeAllFee() private {
if(_taxFee == 0 && _teamFee == 0) return;
_previousTaxFee = _taxFee;
_previousteamFee = _teamFee;
_taxFee = 0;
_teamFee = 0;
}
function restoreAllFee() private {
_taxFee = _previousTaxFee;
_teamFee = _previousteamFee;
}
function setFee(uint256 impactFee) private {
uint256 _impactFee = 10;
if(impactFee < 10) {
_impactFee = 10;
} else if(impactFee > 40) {
_impactFee = 40;
} else {
_impactFee = impactFee;
}
if(_impactFee.mod(2) != 0) {
_impactFee++;
}
_taxFee = (_impactFee.mul(2)).div(10);
_teamFee = (_impactFee.mul(8)).div(10);
}
function _approve(address owner, address spender, uint256 amount) private {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer(address from, address to, uint256 amount) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if(from != owner() && to != owner()) {
if(_cooldownEnabled) {
if(!cooldown[msg.sender].exists) {
cooldown[msg.sender] = User(0,0,true);
}
}
// buy
if(from == uniswapV2Pair && to != address(uniswapV2Router) && !_isExcludedFromFee[to]) {
require(tradingOpen, "Trading not yet enabled.");
_taxFee = 2;
_teamFee = 8;
if(_cooldownEnabled) {
if(buyLimitEnd > block.timestamp) {
require(amount <= _maxBuyAmount);
require(cooldown[to].buy < block.timestamp, "Your buy cooldown has not expired.");
cooldown[to].buy = block.timestamp + (45 seconds);
}
}
if(_cooldownEnabled) {
cooldown[to].sell = block.timestamp + (15 seconds);
}
}
uint256 contractTokenBalance = balanceOf(address(this));
// sell
if(!inSwap && from != uniswapV2Pair && tradingOpen) {
if(_cooldownEnabled) {
require(cooldown[from].sell < block.timestamp, "Your sell cooldown has not expired.");
}
if(_useImpactFeeSetter) {
uint256 feeBasis = amount.mul(_feeMultiplier);
feeBasis = feeBasis.div(balanceOf(uniswapV2Pair).add(amount));
setFee(feeBasis);
}
if(contractTokenBalance > 0) {
if(contractTokenBalance > balanceOf(uniswapV2Pair).mul(_feeRate).div(100)) {
contractTokenBalance = balanceOf(uniswapV2Pair).mul(_feeRate).div(100);
}
swapTokensForEth(contractTokenBalance);
}
uint256 contractETHBalance = address(this).balance;
if(contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
}
bool takeFee = true;
if(_isExcludedFromFee[from] || _isExcludedFromFee[to]){
takeFee = false;
}
_tokenTransfer(from,to,amount,takeFee);
}
function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function sendETHToFee(uint256 amount) private {
_FeeAddress.transfer(amount.div(2));
_marketingWalletAddress.transfer(amount.div(2));
}
function _tokenTransfer(address sender, address recipient, uint256 amount, bool takeFee) private {
if(!takeFee)
removeAllFee();
_transferStandard(sender, recipient, amount);
if(!takeFee)
restoreAllFee();
}
function _transferStandard(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeTeam(tTeam);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(tAmount, _taxFee, _teamFee);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tTeam, currentRate);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam);
}
function _getTValues(uint256 tAmount, uint256 taxFee, uint256 TeamFee) private pure returns (uint256, uint256, uint256) {
uint256 tFee = tAmount.mul(taxFee).div(100);
uint256 tTeam = tAmount.mul(TeamFee).div(100);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam);
return (tTransferAmount, tFee, tTeam);
}
function _getRate() private view returns(uint256) {
(uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
return rSupply.div(tSupply);
}
function _getCurrentSupply() private view returns(uint256, uint256) {
uint256 rSupply = _rTotal;
uint256 tSupply = _tTotal;
if(rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
function _getRValues(uint256 tAmount, uint256 tFee, uint256 tTeam, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rTeam = tTeam.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam);
return (rAmount, rTransferAmount, rFee);
}
function _takeTeam(uint256 tTeam) private {
uint256 currentRate = _getRate();
uint256 rTeam = tTeam.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rTeam);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
receive() external payable {}
function addLiquidity() external onlyOwner() {
require(!tradingOpen,"trading is already open");
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Router = _uniswapV2Router;
_approve(address(this), address(uniswapV2Router), _tTotal);
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
_maxBuyAmount = 3000000000 * 10**9;
_launchTime = block.timestamp;
IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
}
function openTrading() public onlyOwner {
tradingOpen = true;
buyLimitEnd = block.timestamp + (120 seconds);
}
function manualswap() external {
require(_msgSender() == _FeeAddress);
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualsend() external {
require(_msgSender() == _FeeAddress);
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
// fallback in case contract is not releasing tokens fast enough
function setFeeRate(uint256 rate) external {
require(_msgSender() == _FeeAddress);
require(rate < 51, "Rate can't exceed 50%");
_feeRate = rate;
emit FeeRateUpdated(_feeRate);
}
function setCooldownEnabled(bool onoff) external onlyOwner() {
_cooldownEnabled = onoff;
emit CooldownEnabledUpdated(_cooldownEnabled);
}
function thisBalance() public view returns (uint) {
return balanceOf(address(this));
}
function cooldownEnabled() public view returns (bool) {
return _cooldownEnabled;
}
function timeToBuy(address buyer) public view returns (uint) {
return block.timestamp - cooldown[buyer].buy;
}
function timeToSell(address buyer) public view returns (uint) {
return block.timestamp - cooldown[buyer].sell;
}
function amountInPool() public view returns (uint) {
return balanceOf(uniswapV2Pair);
}
} | setFeeRate | function setFeeRate(uint256 rate) external {
require(_msgSender() == _FeeAddress);
require(rate < 51, "Rate can't exceed 50%");
_feeRate = rate;
emit FeeRateUpdated(_feeRate);
}
| // fallback in case contract is not releasing tokens fast enough | LineComment | v0.8.4+commit.c7e474f2 | Unlicense | ipfs://f0b640d89fb6ed7cc5c3c8b68a2548ebdca6d900428bba0eae62dbddd70db8be | {
"func_code_index": [
12600,
12823
]
} | 7,121 |
||
LottoX | LottoX.sol | 0x5bc09a82235348850ef480bb00aae3662c914945 | Solidity | Token | contract Token {
/// @return total amount of tokens
function totalSupply() constant returns (uint256 supply) {}
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) constant returns (uint256 balance) {}
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transfer(address _to, uint256 _value) returns (bool success) {}
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {}
/// @notice `msg.sender` approves `_addr` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of wei to be approved for transfer
/// @return Whether the approval was successful or not
function approve(address _spender, uint256 _value) returns (bool success) {}
/// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {}
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
} | totalSupply | function totalSupply() constant returns (uint256 supply) {}
| /// @return total amount of tokens | NatSpecSingleLine | v0.4.25+commit.59dbf8f1 | bzzr://c1505d6b29f6a3f4a120ebc6ada1c91fb36ba39ac220cdadf035dd07a033243a | {
"func_code_index": [
60,
124
]
} | 7,122 |
|||
LottoX | LottoX.sol | 0x5bc09a82235348850ef480bb00aae3662c914945 | Solidity | Token | contract Token {
/// @return total amount of tokens
function totalSupply() constant returns (uint256 supply) {}
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) constant returns (uint256 balance) {}
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transfer(address _to, uint256 _value) returns (bool success) {}
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {}
/// @notice `msg.sender` approves `_addr` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of wei to be approved for transfer
/// @return Whether the approval was successful or not
function approve(address _spender, uint256 _value) returns (bool success) {}
/// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {}
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
} | balanceOf | function balanceOf(address _owner) constant returns (uint256 balance) {}
| /// @param _owner The address from which the balance will be retrieved
/// @return The balance | NatSpecSingleLine | v0.4.25+commit.59dbf8f1 | bzzr://c1505d6b29f6a3f4a120ebc6ada1c91fb36ba39ac220cdadf035dd07a033243a | {
"func_code_index": [
232,
309
]
} | 7,123 |
|||
LottoX | LottoX.sol | 0x5bc09a82235348850ef480bb00aae3662c914945 | Solidity | Token | contract Token {
/// @return total amount of tokens
function totalSupply() constant returns (uint256 supply) {}
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) constant returns (uint256 balance) {}
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transfer(address _to, uint256 _value) returns (bool success) {}
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {}
/// @notice `msg.sender` approves `_addr` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of wei to be approved for transfer
/// @return Whether the approval was successful or not
function approve(address _spender, uint256 _value) returns (bool success) {}
/// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {}
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
} | transfer | function transfer(address _to, uint256 _value) returns (bool success) {}
| /// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not | NatSpecSingleLine | v0.4.25+commit.59dbf8f1 | bzzr://c1505d6b29f6a3f4a120ebc6ada1c91fb36ba39ac220cdadf035dd07a033243a | {
"func_code_index": [
546,
623
]
} | 7,124 |
|||
LottoX | LottoX.sol | 0x5bc09a82235348850ef480bb00aae3662c914945 | Solidity | Token | contract Token {
/// @return total amount of tokens
function totalSupply() constant returns (uint256 supply) {}
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) constant returns (uint256 balance) {}
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transfer(address _to, uint256 _value) returns (bool success) {}
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {}
/// @notice `msg.sender` approves `_addr` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of wei to be approved for transfer
/// @return Whether the approval was successful or not
function approve(address _spender, uint256 _value) returns (bool success) {}
/// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {}
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
} | transferFrom | function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {}
| /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not | NatSpecSingleLine | v0.4.25+commit.59dbf8f1 | bzzr://c1505d6b29f6a3f4a120ebc6ada1c91fb36ba39ac220cdadf035dd07a033243a | {
"func_code_index": [
946,
1042
]
} | 7,125 |
|||
LottoX | LottoX.sol | 0x5bc09a82235348850ef480bb00aae3662c914945 | Solidity | Token | contract Token {
/// @return total amount of tokens
function totalSupply() constant returns (uint256 supply) {}
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) constant returns (uint256 balance) {}
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transfer(address _to, uint256 _value) returns (bool success) {}
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {}
/// @notice `msg.sender` approves `_addr` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of wei to be approved for transfer
/// @return Whether the approval was successful or not
function approve(address _spender, uint256 _value) returns (bool success) {}
/// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {}
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
} | approve | function approve(address _spender, uint256 _value) returns (bool success) {}
| /// @notice `msg.sender` approves `_addr` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of wei to be approved for transfer
/// @return Whether the approval was successful or not | NatSpecSingleLine | v0.4.25+commit.59dbf8f1 | bzzr://c1505d6b29f6a3f4a120ebc6ada1c91fb36ba39ac220cdadf035dd07a033243a | {
"func_code_index": [
1326,
1407
]
} | 7,126 |
|||
LottoX | LottoX.sol | 0x5bc09a82235348850ef480bb00aae3662c914945 | Solidity | Token | contract Token {
/// @return total amount of tokens
function totalSupply() constant returns (uint256 supply) {}
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) constant returns (uint256 balance) {}
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transfer(address _to, uint256 _value) returns (bool success) {}
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {}
/// @notice `msg.sender` approves `_addr` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of wei to be approved for transfer
/// @return Whether the approval was successful or not
function approve(address _spender, uint256 _value) returns (bool success) {}
/// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {}
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
} | allowance | function allowance(address _owner, address _spender) constant returns (uint256 remaining) {}
| /// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent | NatSpecSingleLine | v0.4.25+commit.59dbf8f1 | bzzr://c1505d6b29f6a3f4a120ebc6ada1c91fb36ba39ac220cdadf035dd07a033243a | {
"func_code_index": [
1615,
1712
]
} | 7,127 |
|||
LottoX | LottoX.sol | 0x5bc09a82235348850ef480bb00aae3662c914945 | Solidity | LottoX | contract LottoX is StandardToken {
/* Public variables of the token */
/*
NOTE:
The following variables are OPTIONAL vanities. One does not have to include them.
They allow one to customise the token contract & in no way influences the core functionality.
Some wallets/interfaces might not even bother to look at this information.
*/
string public name; // Token Name
uint8 public decimals; // How many decimals to show. To be standard complicant keep it 18
string public symbol; // An identifier: eg SBX, XPR etc..
string public version = 'H1.0';
uint256 public unitsOneEthCanBuy; // How many units of your coin can be bought by 1 ETH?
uint256 public totalEthInWei; // WEI is the smallest unit of ETH (the equivalent of cent in USD or satoshi in BTC). We'll store the total ETH raised via our ICO here.
address public fundsWallet; // Where should the raised ETH go?
// which means the following function name has to match the contract name declared above
function LottoX() {
balances[msg.sender] = 400000000000000000000000000;
totalSupply = 400000000000000000000000000;
name = "LottoX";
decimals = 18;
symbol = "LTOXS";
unitsOneEthCanBuy = 1000;
fundsWallet = msg.sender;
}
function() payable{
totalEthInWei = totalEthInWei + msg.value;
uint256 amount = msg.value * unitsOneEthCanBuy;
require(balances[fundsWallet] >= amount);
balances[fundsWallet] = balances[fundsWallet] - amount;
balances[msg.sender] = balances[msg.sender] + amount;
Transfer(fundsWallet, msg.sender, amount); // Broadcast a message to the blockchain
//Transfer ether to fundsWallet
fundsWallet.transfer(msg.value);
}
/* Approves and then calls the receiving contract */
function approveAndCall(address _spender, uint256 _value, bytes _extraData) returns (bool success) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
//call the receiveApproval function on the contract you want to be notified. This crafts the function signature manually so one doesn't have to include a contract in here just for this.
//receiveApproval(address _from, uint256 _value, address _tokenContract, bytes _extraData)
//it is assumed that when does this that the call *should* succeed, otherwise one would use vanilla approve instead.
if(!_spender.call(bytes4(bytes32(sha3("receiveApproval(address,uint256,address,bytes)"))), msg.sender, _value, this, _extraData)) { throw; }
return true;
}
} | LottoX | function LottoX() {
balances[msg.sender] = 400000000000000000000000000;
totalSupply = 400000000000000000000000000;
name = "LottoX";
decimals = 18;
symbol = "LTOXS";
unitsOneEthCanBuy = 1000;
fundsWallet = msg.sender;
}
| // Where should the raised ETH go?
// which means the following function name has to match the contract name declared above | LineComment | v0.4.25+commit.59dbf8f1 | bzzr://c1505d6b29f6a3f4a120ebc6ada1c91fb36ba39ac220cdadf035dd07a033243a | {
"func_code_index": [
1115,
1410
]
} | 7,128 |
|||
LottoX | LottoX.sol | 0x5bc09a82235348850ef480bb00aae3662c914945 | Solidity | LottoX | contract LottoX is StandardToken {
/* Public variables of the token */
/*
NOTE:
The following variables are OPTIONAL vanities. One does not have to include them.
They allow one to customise the token contract & in no way influences the core functionality.
Some wallets/interfaces might not even bother to look at this information.
*/
string public name; // Token Name
uint8 public decimals; // How many decimals to show. To be standard complicant keep it 18
string public symbol; // An identifier: eg SBX, XPR etc..
string public version = 'H1.0';
uint256 public unitsOneEthCanBuy; // How many units of your coin can be bought by 1 ETH?
uint256 public totalEthInWei; // WEI is the smallest unit of ETH (the equivalent of cent in USD or satoshi in BTC). We'll store the total ETH raised via our ICO here.
address public fundsWallet; // Where should the raised ETH go?
// which means the following function name has to match the contract name declared above
function LottoX() {
balances[msg.sender] = 400000000000000000000000000;
totalSupply = 400000000000000000000000000;
name = "LottoX";
decimals = 18;
symbol = "LTOXS";
unitsOneEthCanBuy = 1000;
fundsWallet = msg.sender;
}
function() payable{
totalEthInWei = totalEthInWei + msg.value;
uint256 amount = msg.value * unitsOneEthCanBuy;
require(balances[fundsWallet] >= amount);
balances[fundsWallet] = balances[fundsWallet] - amount;
balances[msg.sender] = balances[msg.sender] + amount;
Transfer(fundsWallet, msg.sender, amount); // Broadcast a message to the blockchain
//Transfer ether to fundsWallet
fundsWallet.transfer(msg.value);
}
/* Approves and then calls the receiving contract */
function approveAndCall(address _spender, uint256 _value, bytes _extraData) returns (bool success) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
//call the receiveApproval function on the contract you want to be notified. This crafts the function signature manually so one doesn't have to include a contract in here just for this.
//receiveApproval(address _from, uint256 _value, address _tokenContract, bytes _extraData)
//it is assumed that when does this that the call *should* succeed, otherwise one would use vanilla approve instead.
if(!_spender.call(bytes4(bytes32(sha3("receiveApproval(address,uint256,address,bytes)"))), msg.sender, _value, this, _extraData)) { throw; }
return true;
}
} | approveAndCall | function approveAndCall(address _spender, uint256 _value, bytes _extraData) returns (bool success) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
//call the receiveApproval function on the contract you want to be notified. This crafts the function signature manually so one doesn't have to include a contract in here just for this.
//receiveApproval(address _from, uint256 _value, address _tokenContract, bytes _extraData)
//it is assumed that when does this that the call *should* succeed, otherwise one would use vanilla approve instead.
if(!_spender.call(bytes4(bytes32(sha3("receiveApproval(address,uint256,address,bytes)"))), msg.sender, _value, this, _extraData)) { throw; }
return true;
}
| /* Approves and then calls the receiving contract */ | Comment | v0.4.25+commit.59dbf8f1 | bzzr://c1505d6b29f6a3f4a120ebc6ada1c91fb36ba39ac220cdadf035dd07a033243a | {
"func_code_index": [
2006,
2811
]
} | 7,129 |
|||
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | Math | library Math {
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow.
return (a & b) + (a ^ b) / 2;
}
/**
* @dev Returns the ceiling of the division of two numbers.
*
* This differs from standard division with `/` in that it rounds up instead
* of rounding down.
*/
function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b - 1) / b can overflow on addition, so we distribute.
return a / b + (a % b == 0 ? 0 : 1);
}
} | //**************************************************************************************** | LineComment | max | function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
| /**
* @dev Returns the largest of two numbers.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
83,
195
]
} | 7,130 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | Math | library Math {
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow.
return (a & b) + (a ^ b) / 2;
}
/**
* @dev Returns the ceiling of the division of two numbers.
*
* This differs from standard division with `/` in that it rounds up instead
* of rounding down.
*/
function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b - 1) / b can overflow on addition, so we distribute.
return a / b + (a % b == 0 ? 0 : 1);
}
} | //**************************************************************************************** | LineComment | min | function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
| /**
* @dev Returns the smallest of two numbers.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
266,
377
]
} | 7,131 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | Math | library Math {
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow.
return (a & b) + (a ^ b) / 2;
}
/**
* @dev Returns the ceiling of the division of two numbers.
*
* This differs from standard division with `/` in that it rounds up instead
* of rounding down.
*/
function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b - 1) / b can overflow on addition, so we distribute.
return a / b + (a % b == 0 ? 0 : 1);
}
} | //**************************************************************************************** | LineComment | average | function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow.
return (a & b) + (a ^ b) / 2;
}
| /**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
491,
652
]
} | 7,132 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | Math | library Math {
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow.
return (a & b) + (a ^ b) / 2;
}
/**
* @dev Returns the ceiling of the division of two numbers.
*
* This differs from standard division with `/` in that it rounds up instead
* of rounding down.
*/
function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b - 1) / b can overflow on addition, so we distribute.
return a / b + (a % b == 0 ? 0 : 1);
}
} | //**************************************************************************************** | LineComment | ceilDiv | function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b - 1) / b can overflow on addition, so we distribute.
return a / b + (a % b == 0 ? 0 : 1);
}
| /**
* @dev Returns the ceiling of the division of two numbers.
*
* This differs from standard division with `/` in that it rounds up instead
* of rounding down.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
854,
1056
]
} | 7,133 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | SafeMath | library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
assert(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Substracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
} | //**************************************************************************************** | LineComment | mul | function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
assert(c / a == b);
return c;
}
| /**
* @dev Multiplies two numbers, throws on overflow.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
89,
272
]
} | 7,134 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | SafeMath | library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
assert(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Substracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
} | //**************************************************************************************** | LineComment | div | function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
| /**
* @dev Integer division of two numbers, truncating the quotient.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
356,
629
]
} | 7,135 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | SafeMath | library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
assert(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Substracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
} | //**************************************************************************************** | LineComment | sub | function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
| /**
* @dev Substracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
744,
860
]
} | 7,136 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | SafeMath | library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
assert(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Substracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
} | //**************************************************************************************** | LineComment | add | function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
| /**
* @dev Adds two numbers, throws on overflow.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
924,
1060
]
} | 7,137 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | 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 on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
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");
(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");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
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
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | //**************************************************************************************** | LineComment | isContract | function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
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 | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
606,
998
]
} | 7,138 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | 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 on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
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");
(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");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
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
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | //**************************************************************************************** | LineComment | sendValue | function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(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 | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
1928,
2250
]
} | 7,139 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | 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 on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
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");
(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");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
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
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | //**************************************************************************************** | LineComment | 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 | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
3007,
3187
]
} | 7,140 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | 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 on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
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");
(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");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
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
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | //**************************************************************************************** | LineComment | 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 | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
3412,
3646
]
} | 7,141 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | 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 on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
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");
(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");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
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
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | //**************************************************************************************** | LineComment | 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 | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
4016,
4281
]
} | 7,142 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | 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 on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
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");
(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");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
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
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | //**************************************************************************************** | LineComment | 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");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, 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 | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
4532,
5047
]
} | 7,143 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | 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 on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
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");
(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");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
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
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | //**************************************************************************************** | LineComment | functionStaticCall | function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
| /**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
5227,
5431
]
} | 7,144 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | 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 on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
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");
(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");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
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
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | //**************************************************************************************** | LineComment | functionStaticCall | function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
| /**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
5618,
6018
]
} | 7,145 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | 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 on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
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");
(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");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
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
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | //**************************************************************************************** | LineComment | functionDelegateCall | function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
| /**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
6200,
6405
]
} | 7,146 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | 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 on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
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");
(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");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
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
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | //**************************************************************************************** | LineComment | functionDelegateCall | function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
| /**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
6594,
6995
]
} | 7,147 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | 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 on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
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");
(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");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
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
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | //**************************************************************************************** | LineComment | verifyCallResult | function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
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
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
| /**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
7218,
7935
]
} | 7,148 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | Arrays | library Arrays {
/**
* @dev Searches a sorted `array` and returns the first index that contains
* a value greater or equal to `element`. If no such index exists (i.e. all
* values in the array are strictly less than `element`), the array length is
* returned. Time complexity O(log n).
*
* `array` is expected to be sorted in ascending order, and to contain no
* repeated elements.
*/
function findUpperBound(uint256[] storage array, uint256 element) internal view returns (uint256) {
if (array.length == 0) {
return 0;
}
uint256 low = 0;
uint256 high = array.length;
while (low < high) {
uint256 mid = Math.average(low, high);
// Note that mid will always be strictly less than high (i.e. it will be a valid array index)
// because Math.average rounds down (it does integer division with truncation).
if (array[mid] > element) {
high = mid;
} else {
low = mid + 1;
}
}
// At this point `low` is the exclusive upper bound. We will return the inclusive upper bound.
if (low > 0 && array[low - 1] == element) {
return low - 1;
} else {
return low;
}
}
} | findUpperBound | function findUpperBound(uint256[] storage array, uint256 element) internal view returns (uint256) {
if (array.length == 0) {
return 0;
}
uint256 low = 0;
uint256 high = array.length;
while (low < high) {
uint256 mid = Math.average(low, high);
// Note that mid will always be strictly less than high (i.e. it will be a valid array index)
// because Math.average rounds down (it does integer division with truncation).
if (array[mid] > element) {
high = mid;
} else {
low = mid + 1;
}
}
// At this point `low` is the exclusive upper bound. We will return the inclusive upper bound.
if (low > 0 && array[low - 1] == element) {
return low - 1;
} else {
return low;
}
}
| /**
* @dev Searches a sorted `array` and returns the first index that contains
* a value greater or equal to `element`. If no such index exists (i.e. all
* values in the array are strictly less than `element`), the array length is
* returned. Time complexity O(log n).
*
* `array` is expected to be sorted in ascending order, and to contain no
* repeated elements.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
439,
1362
]
} | 7,149 |
||
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | Strings | library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
} | //**************************************************************************************** | LineComment | toString | function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
| /**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
184,
912
]
} | 7,150 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | Strings | library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
} | //**************************************************************************************** | LineComment | toHexString | function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
| /**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
1017,
1362
]
} | 7,151 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | Strings | library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
} | //**************************************************************************************** | LineComment | toHexString | function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
| /**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
1485,
1941
]
} | 7,152 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | Ownable | abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_setOwner(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_setOwner(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_setOwner(newOwner);
}
function _setOwner(address newOwner) private {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
} | //****************************************************************************************
//****************************************************************************************
//****************************************************************************************
//**************************************************************************************** | LineComment | owner | function owner() public view virtual returns (address) {
return _owner;
}
| /**
* @dev Returns the address of the current owner.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
399,
491
]
} | 7,153 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | Ownable | abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_setOwner(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_setOwner(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_setOwner(newOwner);
}
function _setOwner(address newOwner) private {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
} | //****************************************************************************************
//****************************************************************************************
//****************************************************************************************
//**************************************************************************************** | LineComment | renounceOwnership | function renounceOwnership() public virtual onlyOwner {
_setOwner(address(0));
}
| /**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
1050,
1149
]
} | 7,154 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | Ownable | abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_setOwner(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_setOwner(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_setOwner(newOwner);
}
function _setOwner(address newOwner) private {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
} | //****************************************************************************************
//****************************************************************************************
//****************************************************************************************
//**************************************************************************************** | LineComment | transferOwnership | function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_setOwner(newOwner);
}
| /**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
1299,
1496
]
} | 7,155 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: 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
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
} | //**************************************************************************************** | LineComment | totalSupply | function totalSupply() external view returns (uint256);
| /**
* @dev Returns the amount of tokens in existence.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
94,
154
]
} | 7,156 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: 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
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
} | //**************************************************************************************** | LineComment | balanceOf | function balanceOf(address account) external view returns (uint256);
| /**
* @dev Returns the amount of tokens owned by `account`.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
237,
310
]
} | 7,157 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: 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
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
} | //**************************************************************************************** | LineComment | transfer | function transfer(address recipient, uint256 amount) external returns (bool);
| /**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
534,
616
]
} | 7,158 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: 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
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
} | //**************************************************************************************** | LineComment | allowance | function allowance(address owner, address spender) external view returns (uint256);
| /**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
895,
983
]
} | 7,159 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: 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
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
} | //**************************************************************************************** | LineComment | approve | function approve(address spender, uint256 amount) external returns (bool);
| /**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: 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
*
* Emits an {Approval} event.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
1647,
1726
]
} | 7,160 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: 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
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
} | //**************************************************************************************** | LineComment | transferFrom | function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
| /**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
2039,
2175
]
} | 7,161 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | IERC20Metadata | interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
} | //**************************************************************************************** | LineComment | name | function name() external view returns (string memory);
| /**
* @dev Returns the name of the token.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
100,
159
]
} | 7,162 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | IERC20Metadata | interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
} | //**************************************************************************************** | LineComment | symbol | function symbol() external view returns (string memory);
| /**
* @dev Returns the symbol of the token.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
226,
287
]
} | 7,163 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | IERC20Metadata | interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
} | //**************************************************************************************** | LineComment | decimals | function decimals() external view returns (uint8);
| /**
* @dev Returns the decimals places of the token.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
363,
418
]
} | 7,164 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
} | //**************************************************************************************** | LineComment | name | function name() public view virtual override returns (string memory) {
return _name;
}
| /**
* @dev Returns the name of the token.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
809,
914
]
} | 7,165 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
} | //**************************************************************************************** | LineComment | symbol | function symbol() public view virtual override returns (string memory) {
return _symbol;
}
| /**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
1028,
1137
]
} | 7,166 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
} | //**************************************************************************************** | LineComment | decimals | function decimals() public view virtual override returns (uint8) {
return 18;
}
| /**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
1771,
1869
]
} | 7,167 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
} | //**************************************************************************************** | LineComment | totalSupply | function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
| /**
* @dev See {IERC20-totalSupply}.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
1929,
2042
]
} | 7,168 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
} | //**************************************************************************************** | LineComment | balanceOf | function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
| /**
* @dev See {IERC20-balanceOf}.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
2100,
2232
]
} | 7,169 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
} | //**************************************************************************************** | LineComment | transfer | function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
| /**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
2440,
2620
]
} | 7,170 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
} | //**************************************************************************************** | LineComment | allowance | function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
| /**
* @dev See {IERC20-allowance}.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
2678,
2834
]
} | 7,171 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
} | //**************************************************************************************** | LineComment | approve | function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
| /**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
2976,
3150
]
} | 7,172 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
} | //**************************************************************************************** | LineComment | transferFrom | function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
| /**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
3627,
4124
]
} | 7,173 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
} | //**************************************************************************************** | LineComment | increaseAllowance | function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
| /**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
4528,
4748
]
} | 7,174 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
} | //**************************************************************************************** | LineComment | decreaseAllowance | function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
| /**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
5246,
5664
]
} | 7,175 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
} | //**************************************************************************************** | LineComment | _transfer | function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
| /**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
6149,
6887
]
} | 7,176 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
} | //**************************************************************************************** | LineComment | _mint | function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
| /** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
7169,
7573
]
} | 7,177 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
} | //**************************************************************************************** | LineComment | _burn | function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
| /**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
7901,
8497
]
} | 7,178 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
} | //**************************************************************************************** | LineComment | _approve | function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
| /**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
8930,
9315
]
} | 7,179 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
} | //**************************************************************************************** | LineComment | _beforeTokenTransfer | function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
| /**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
9910,
10040
]
} | 7,180 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
} | //**************************************************************************************** | LineComment | _afterTokenTransfer | function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
| /**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
10639,
10768
]
} | 7,181 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | ERC20Burnable | abstract contract ERC20Burnable is Context, ERC20 {
/**
* @dev Destroys `amount` tokens from the caller.
*
* See {ERC20-_burn}.
*/
function burn(uint256 amount) public virtual {
_burn(_msgSender(), amount);
}
/**
* @dev Destroys `amount` tokens from `account`, deducting from the caller's
* allowance.
*
* See {ERC20-_burn} and {ERC20-allowance}.
*
* Requirements:
*
* - the caller must have allowance for ``accounts``'s tokens of at least
* `amount`.
*/
function burnFrom(address account, uint256 amount) public virtual {
uint256 currentAllowance = allowance(account, _msgSender());
require(currentAllowance >= amount, "ERC20: burn amount exceeds allowance");
unchecked {
_approve(account, _msgSender(), currentAllowance - amount);
}
_burn(account, amount);
}
} | //**************************************************************************************** | LineComment | burn | function burn(uint256 amount) public virtual {
_burn(_msgSender(), amount);
}
| /**
* @dev Destroys `amount` tokens from the caller.
*
* See {ERC20-_burn}.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
161,
257
]
} | 7,182 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | ERC20Burnable | abstract contract ERC20Burnable is Context, ERC20 {
/**
* @dev Destroys `amount` tokens from the caller.
*
* See {ERC20-_burn}.
*/
function burn(uint256 amount) public virtual {
_burn(_msgSender(), amount);
}
/**
* @dev Destroys `amount` tokens from `account`, deducting from the caller's
* allowance.
*
* See {ERC20-_burn} and {ERC20-allowance}.
*
* Requirements:
*
* - the caller must have allowance for ``accounts``'s tokens of at least
* `amount`.
*/
function burnFrom(address account, uint256 amount) public virtual {
uint256 currentAllowance = allowance(account, _msgSender());
require(currentAllowance >= amount, "ERC20: burn amount exceeds allowance");
unchecked {
_approve(account, _msgSender(), currentAllowance - amount);
}
_burn(account, amount);
}
} | //**************************************************************************************** | LineComment | burnFrom | function burnFrom(address account, uint256 amount) public virtual {
uint256 currentAllowance = allowance(account, _msgSender());
require(currentAllowance >= amount, "ERC20: burn amount exceeds allowance");
unchecked {
_approve(account, _msgSender(), currentAllowance - amount);
}
_burn(account, amount);
}
| /**
* @dev Destroys `amount` tokens from `account`, deducting from the caller's
* allowance.
*
* See {ERC20-_burn} and {ERC20-allowance}.
*
* Requirements:
*
* - the caller must have allowance for ``accounts``'s tokens of at least
* `amount`.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
571,
944
]
} | 7,183 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | Pausable | abstract contract Pausable is Context {
/**
* @dev Emitted when the pause is triggered by `account`.
*/
event Paused(address account);
/**
* @dev Emitted when the pause is lifted by `account`.
*/
event Unpaused(address account);
bool private _paused;
/**
* @dev Initializes the contract in unpaused state.
*/
constructor() {
_paused = false;
}
/**
* @dev Returns true if the contract is paused, and false otherwise.
*/
function paused() public view virtual returns (bool) {
return _paused;
}
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*
* Requirements:
*
* - The contract must not be paused.
*/
modifier whenNotPaused() {
require(!paused(), "Pausable: paused");
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*
* Requirements:
*
* - The contract must be paused.
*/
modifier whenPaused() {
require(paused(), "Pausable: not paused");
_;
}
/**
* @dev Triggers stopped state.
*
* Requirements:
*
* - The contract must not be paused.
*/
function _pause() internal virtual whenNotPaused {
_paused = true;
emit Paused(_msgSender());
}
/**
* @dev Returns to normal state.
*
* Requirements:
*
* - The contract must be paused.
*/
function _unpause() internal virtual whenPaused {
_paused = false;
emit Unpaused(_msgSender());
}
} | //**************************************************************************************** | LineComment | paused | function paused() public view virtual returns (bool) {
return _paused;
}
| /**
* @dev Returns true if the contract is paused, and false otherwise.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
530,
621
]
} | 7,184 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | Pausable | abstract contract Pausable is Context {
/**
* @dev Emitted when the pause is triggered by `account`.
*/
event Paused(address account);
/**
* @dev Emitted when the pause is lifted by `account`.
*/
event Unpaused(address account);
bool private _paused;
/**
* @dev Initializes the contract in unpaused state.
*/
constructor() {
_paused = false;
}
/**
* @dev Returns true if the contract is paused, and false otherwise.
*/
function paused() public view virtual returns (bool) {
return _paused;
}
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*
* Requirements:
*
* - The contract must not be paused.
*/
modifier whenNotPaused() {
require(!paused(), "Pausable: paused");
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*
* Requirements:
*
* - The contract must be paused.
*/
modifier whenPaused() {
require(paused(), "Pausable: not paused");
_;
}
/**
* @dev Triggers stopped state.
*
* Requirements:
*
* - The contract must not be paused.
*/
function _pause() internal virtual whenNotPaused {
_paused = true;
emit Paused(_msgSender());
}
/**
* @dev Returns to normal state.
*
* Requirements:
*
* - The contract must be paused.
*/
function _unpause() internal virtual whenPaused {
_paused = false;
emit Unpaused(_msgSender());
}
} | //**************************************************************************************** | LineComment | _pause | function _pause() internal virtual whenNotPaused {
_paused = true;
emit Paused(_msgSender());
}
| /**
* @dev Triggers stopped state.
*
* Requirements:
*
* - The contract must not be paused.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
1330,
1453
]
} | 7,185 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | Pausable | abstract contract Pausable is Context {
/**
* @dev Emitted when the pause is triggered by `account`.
*/
event Paused(address account);
/**
* @dev Emitted when the pause is lifted by `account`.
*/
event Unpaused(address account);
bool private _paused;
/**
* @dev Initializes the contract in unpaused state.
*/
constructor() {
_paused = false;
}
/**
* @dev Returns true if the contract is paused, and false otherwise.
*/
function paused() public view virtual returns (bool) {
return _paused;
}
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*
* Requirements:
*
* - The contract must not be paused.
*/
modifier whenNotPaused() {
require(!paused(), "Pausable: paused");
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*
* Requirements:
*
* - The contract must be paused.
*/
modifier whenPaused() {
require(paused(), "Pausable: not paused");
_;
}
/**
* @dev Triggers stopped state.
*
* Requirements:
*
* - The contract must not be paused.
*/
function _pause() internal virtual whenNotPaused {
_paused = true;
emit Paused(_msgSender());
}
/**
* @dev Returns to normal state.
*
* Requirements:
*
* - The contract must be paused.
*/
function _unpause() internal virtual whenPaused {
_paused = false;
emit Unpaused(_msgSender());
}
} | //**************************************************************************************** | LineComment | _unpause | function _unpause() internal virtual whenPaused {
_paused = false;
emit Unpaused(_msgSender());
}
| /**
* @dev Returns to normal state.
*
* Requirements:
*
* - The contract must be paused.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
1589,
1714
]
} | 7,186 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | ERC20Snapshot | abstract contract ERC20Snapshot is ERC20 {
// Inspired by Jordi Baylina's MiniMeToken to record historical balances:
// https://github.com/Giveth/minimd/blob/ea04d950eea153a04c51fa510b068b9dded390cb/contracts/MiniMeToken.sol
using Arrays for uint256[];
using Counters for Counters.Counter;
// Snapshotted values have arrays of ids and the value corresponding to that id. These could be an array of a
// Snapshot struct, but that would impede usage of functions that work on an array.
struct Snapshots {
uint256[] ids;
uint256[] values;
}
mapping(address => Snapshots) private _accountBalanceSnapshots;
Snapshots private _totalSupplySnapshots;
// Snapshot ids increase monotonically, with the first value being 1. An id of 0 is invalid.
Counters.Counter private _currentSnapshotId;
/**
* @dev Emitted by {_snapshot} when a snapshot identified by `id` is created.
*/
event Snapshot(uint256 id);
/**
* @dev Creates a new snapshot and returns its snapshot id.
*
* Emits a {Snapshot} event that contains the same id.
*
* {_snapshot} is `internal` and you have to decide how to expose it externally. Its usage may be restricted to a
* set of accounts, for example using {AccessControl}, or it may be open to the public.
*
* [WARNING]
* ====
* While an open way of calling {_snapshot} is required for certain trust minimization mechanisms such as forking,
* you must consider that it can potentially be used by attackers in two ways.
*
* First, it can be used to increase the cost of retrieval of values from snapshots, although it will grow
* logarithmically thus rendering this attack ineffective in the long term. Second, it can be used to target
* specific accounts and increase the cost of ERC20 transfers for them, in the ways specified in the Gas Costs
* section above.
*
* We haven't measured the actual numbers; if this is something you're interested in please reach out to us.
* ====
*/
function _snapshot() internal virtual returns (uint256) {
_currentSnapshotId.increment();
uint256 currentId = _getCurrentSnapshotId();
emit Snapshot(currentId);
return currentId;
}
/**
* @dev Get the current snapshotId
*/
function _getCurrentSnapshotId() internal view virtual returns (uint256) {
return _currentSnapshotId.current();
}
/**
* @dev Retrieves the balance of `account` at the time `snapshotId` was created.
*/
function balanceOfAt(address account, uint256 snapshotId) public view virtual returns (uint256) {
(bool snapshotted, uint256 value) = _valueAt(snapshotId, _accountBalanceSnapshots[account]);
return snapshotted ? value : balanceOf(account);
}
/**
* @dev Retrieves the total supply at the time `snapshotId` was created.
*/
function totalSupplyAt(uint256 snapshotId) public view virtual returns (uint256) {
(bool snapshotted, uint256 value) = _valueAt(snapshotId, _totalSupplySnapshots);
return snapshotted ? value : totalSupply();
}
// Update balance and/or total supply snapshots before the values are modified. This is implemented
// in the _beforeTokenTransfer hook, which is executed for _mint, _burn, and _transfer operations.
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual override {
super._beforeTokenTransfer(from, to, amount);
if (from == address(0)) {
// mint
_updateAccountSnapshot(to);
_updateTotalSupplySnapshot();
} else if (to == address(0)) {
// burn
_updateAccountSnapshot(from);
_updateTotalSupplySnapshot();
} else {
// transfer
_updateAccountSnapshot(from);
_updateAccountSnapshot(to);
}
}
function _valueAt(uint256 snapshotId, Snapshots storage snapshots) private view returns (bool, uint256) {
require(snapshotId > 0, "ERC20Snapshot: id is 0");
require(snapshotId <= _getCurrentSnapshotId(), "ERC20Snapshot: nonexistent id");
// When a valid snapshot is queried, there are three possibilities:
// a) The queried value was not modified after the snapshot was taken. Therefore, a snapshot entry was never
// created for this id, and all stored snapshot ids are smaller than the requested one. The value that corresponds
// to this id is the current one.
// b) The queried value was modified after the snapshot was taken. Therefore, there will be an entry with the
// requested id, and its value is the one to return.
// c) More snapshots were created after the requested one, and the queried value was later modified. There will be
// no entry for the requested id: the value that corresponds to it is that of the smallest snapshot id that is
// larger than the requested one.
//
// In summary, we need to find an element in an array, returning the index of the smallest value that is larger if
// it is not found, unless said value doesn't exist (e.g. when all values are smaller). Arrays.findUpperBound does
// exactly this.
uint256 index = snapshots.ids.findUpperBound(snapshotId);
if (index == snapshots.ids.length) {
return (false, 0);
} else {
return (true, snapshots.values[index]);
}
}
function _updateAccountSnapshot(address account) private {
_updateSnapshot(_accountBalanceSnapshots[account], balanceOf(account));
}
function _updateTotalSupplySnapshot() private {
_updateSnapshot(_totalSupplySnapshots, totalSupply());
}
function _updateSnapshot(Snapshots storage snapshots, uint256 currentValue) private {
uint256 currentId = _getCurrentSnapshotId();
if (_lastSnapshotId(snapshots.ids) < currentId) {
snapshots.ids.push(currentId);
snapshots.values.push(currentValue);
}
}
function _lastSnapshotId(uint256[] storage ids) private view returns (uint256) {
if (ids.length == 0) {
return 0;
} else {
return ids[ids.length - 1];
}
}
} | //**************************************************************************************** | LineComment | _snapshot | function _snapshot() internal virtual returns (uint256) {
_currentSnapshotId.increment();
uint256 currentId = _getCurrentSnapshotId();
emit Snapshot(currentId);
return currentId;
}
| /**
* @dev Creates a new snapshot and returns its snapshot id.
*
* Emits a {Snapshot} event that contains the same id.
*
* {_snapshot} is `internal` and you have to decide how to expose it externally. Its usage may be restricted to a
* set of accounts, for example using {AccessControl}, or it may be open to the public.
*
* [WARNING]
* ====
* While an open way of calling {_snapshot} is required for certain trust minimization mechanisms such as forking,
* you must consider that it can potentially be used by attackers in two ways.
*
* First, it can be used to increase the cost of retrieval of values from snapshots, although it will grow
* logarithmically thus rendering this attack ineffective in the long term. Second, it can be used to target
* specific accounts and increase the cost of ERC20 transfers for them, in the ways specified in the Gas Costs
* section above.
*
* We haven't measured the actual numbers; if this is something you're interested in please reach out to us.
* ====
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
2128,
2356
]
} | 7,187 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | ERC20Snapshot | abstract contract ERC20Snapshot is ERC20 {
// Inspired by Jordi Baylina's MiniMeToken to record historical balances:
// https://github.com/Giveth/minimd/blob/ea04d950eea153a04c51fa510b068b9dded390cb/contracts/MiniMeToken.sol
using Arrays for uint256[];
using Counters for Counters.Counter;
// Snapshotted values have arrays of ids and the value corresponding to that id. These could be an array of a
// Snapshot struct, but that would impede usage of functions that work on an array.
struct Snapshots {
uint256[] ids;
uint256[] values;
}
mapping(address => Snapshots) private _accountBalanceSnapshots;
Snapshots private _totalSupplySnapshots;
// Snapshot ids increase monotonically, with the first value being 1. An id of 0 is invalid.
Counters.Counter private _currentSnapshotId;
/**
* @dev Emitted by {_snapshot} when a snapshot identified by `id` is created.
*/
event Snapshot(uint256 id);
/**
* @dev Creates a new snapshot and returns its snapshot id.
*
* Emits a {Snapshot} event that contains the same id.
*
* {_snapshot} is `internal` and you have to decide how to expose it externally. Its usage may be restricted to a
* set of accounts, for example using {AccessControl}, or it may be open to the public.
*
* [WARNING]
* ====
* While an open way of calling {_snapshot} is required for certain trust minimization mechanisms such as forking,
* you must consider that it can potentially be used by attackers in two ways.
*
* First, it can be used to increase the cost of retrieval of values from snapshots, although it will grow
* logarithmically thus rendering this attack ineffective in the long term. Second, it can be used to target
* specific accounts and increase the cost of ERC20 transfers for them, in the ways specified in the Gas Costs
* section above.
*
* We haven't measured the actual numbers; if this is something you're interested in please reach out to us.
* ====
*/
function _snapshot() internal virtual returns (uint256) {
_currentSnapshotId.increment();
uint256 currentId = _getCurrentSnapshotId();
emit Snapshot(currentId);
return currentId;
}
/**
* @dev Get the current snapshotId
*/
function _getCurrentSnapshotId() internal view virtual returns (uint256) {
return _currentSnapshotId.current();
}
/**
* @dev Retrieves the balance of `account` at the time `snapshotId` was created.
*/
function balanceOfAt(address account, uint256 snapshotId) public view virtual returns (uint256) {
(bool snapshotted, uint256 value) = _valueAt(snapshotId, _accountBalanceSnapshots[account]);
return snapshotted ? value : balanceOf(account);
}
/**
* @dev Retrieves the total supply at the time `snapshotId` was created.
*/
function totalSupplyAt(uint256 snapshotId) public view virtual returns (uint256) {
(bool snapshotted, uint256 value) = _valueAt(snapshotId, _totalSupplySnapshots);
return snapshotted ? value : totalSupply();
}
// Update balance and/or total supply snapshots before the values are modified. This is implemented
// in the _beforeTokenTransfer hook, which is executed for _mint, _burn, and _transfer operations.
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual override {
super._beforeTokenTransfer(from, to, amount);
if (from == address(0)) {
// mint
_updateAccountSnapshot(to);
_updateTotalSupplySnapshot();
} else if (to == address(0)) {
// burn
_updateAccountSnapshot(from);
_updateTotalSupplySnapshot();
} else {
// transfer
_updateAccountSnapshot(from);
_updateAccountSnapshot(to);
}
}
function _valueAt(uint256 snapshotId, Snapshots storage snapshots) private view returns (bool, uint256) {
require(snapshotId > 0, "ERC20Snapshot: id is 0");
require(snapshotId <= _getCurrentSnapshotId(), "ERC20Snapshot: nonexistent id");
// When a valid snapshot is queried, there are three possibilities:
// a) The queried value was not modified after the snapshot was taken. Therefore, a snapshot entry was never
// created for this id, and all stored snapshot ids are smaller than the requested one. The value that corresponds
// to this id is the current one.
// b) The queried value was modified after the snapshot was taken. Therefore, there will be an entry with the
// requested id, and its value is the one to return.
// c) More snapshots were created after the requested one, and the queried value was later modified. There will be
// no entry for the requested id: the value that corresponds to it is that of the smallest snapshot id that is
// larger than the requested one.
//
// In summary, we need to find an element in an array, returning the index of the smallest value that is larger if
// it is not found, unless said value doesn't exist (e.g. when all values are smaller). Arrays.findUpperBound does
// exactly this.
uint256 index = snapshots.ids.findUpperBound(snapshotId);
if (index == snapshots.ids.length) {
return (false, 0);
} else {
return (true, snapshots.values[index]);
}
}
function _updateAccountSnapshot(address account) private {
_updateSnapshot(_accountBalanceSnapshots[account], balanceOf(account));
}
function _updateTotalSupplySnapshot() private {
_updateSnapshot(_totalSupplySnapshots, totalSupply());
}
function _updateSnapshot(Snapshots storage snapshots, uint256 currentValue) private {
uint256 currentId = _getCurrentSnapshotId();
if (_lastSnapshotId(snapshots.ids) < currentId) {
snapshots.ids.push(currentId);
snapshots.values.push(currentValue);
}
}
function _lastSnapshotId(uint256[] storage ids) private view returns (uint256) {
if (ids.length == 0) {
return 0;
} else {
return ids[ids.length - 1];
}
}
} | //**************************************************************************************** | LineComment | _getCurrentSnapshotId | function _getCurrentSnapshotId() internal view virtual returns (uint256) {
return _currentSnapshotId.current();
}
| /**
* @dev Get the current snapshotId
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
2417,
2549
]
} | 7,188 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | ERC20Snapshot | abstract contract ERC20Snapshot is ERC20 {
// Inspired by Jordi Baylina's MiniMeToken to record historical balances:
// https://github.com/Giveth/minimd/blob/ea04d950eea153a04c51fa510b068b9dded390cb/contracts/MiniMeToken.sol
using Arrays for uint256[];
using Counters for Counters.Counter;
// Snapshotted values have arrays of ids and the value corresponding to that id. These could be an array of a
// Snapshot struct, but that would impede usage of functions that work on an array.
struct Snapshots {
uint256[] ids;
uint256[] values;
}
mapping(address => Snapshots) private _accountBalanceSnapshots;
Snapshots private _totalSupplySnapshots;
// Snapshot ids increase monotonically, with the first value being 1. An id of 0 is invalid.
Counters.Counter private _currentSnapshotId;
/**
* @dev Emitted by {_snapshot} when a snapshot identified by `id` is created.
*/
event Snapshot(uint256 id);
/**
* @dev Creates a new snapshot and returns its snapshot id.
*
* Emits a {Snapshot} event that contains the same id.
*
* {_snapshot} is `internal` and you have to decide how to expose it externally. Its usage may be restricted to a
* set of accounts, for example using {AccessControl}, or it may be open to the public.
*
* [WARNING]
* ====
* While an open way of calling {_snapshot} is required for certain trust minimization mechanisms such as forking,
* you must consider that it can potentially be used by attackers in two ways.
*
* First, it can be used to increase the cost of retrieval of values from snapshots, although it will grow
* logarithmically thus rendering this attack ineffective in the long term. Second, it can be used to target
* specific accounts and increase the cost of ERC20 transfers for them, in the ways specified in the Gas Costs
* section above.
*
* We haven't measured the actual numbers; if this is something you're interested in please reach out to us.
* ====
*/
function _snapshot() internal virtual returns (uint256) {
_currentSnapshotId.increment();
uint256 currentId = _getCurrentSnapshotId();
emit Snapshot(currentId);
return currentId;
}
/**
* @dev Get the current snapshotId
*/
function _getCurrentSnapshotId() internal view virtual returns (uint256) {
return _currentSnapshotId.current();
}
/**
* @dev Retrieves the balance of `account` at the time `snapshotId` was created.
*/
function balanceOfAt(address account, uint256 snapshotId) public view virtual returns (uint256) {
(bool snapshotted, uint256 value) = _valueAt(snapshotId, _accountBalanceSnapshots[account]);
return snapshotted ? value : balanceOf(account);
}
/**
* @dev Retrieves the total supply at the time `snapshotId` was created.
*/
function totalSupplyAt(uint256 snapshotId) public view virtual returns (uint256) {
(bool snapshotted, uint256 value) = _valueAt(snapshotId, _totalSupplySnapshots);
return snapshotted ? value : totalSupply();
}
// Update balance and/or total supply snapshots before the values are modified. This is implemented
// in the _beforeTokenTransfer hook, which is executed for _mint, _burn, and _transfer operations.
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual override {
super._beforeTokenTransfer(from, to, amount);
if (from == address(0)) {
// mint
_updateAccountSnapshot(to);
_updateTotalSupplySnapshot();
} else if (to == address(0)) {
// burn
_updateAccountSnapshot(from);
_updateTotalSupplySnapshot();
} else {
// transfer
_updateAccountSnapshot(from);
_updateAccountSnapshot(to);
}
}
function _valueAt(uint256 snapshotId, Snapshots storage snapshots) private view returns (bool, uint256) {
require(snapshotId > 0, "ERC20Snapshot: id is 0");
require(snapshotId <= _getCurrentSnapshotId(), "ERC20Snapshot: nonexistent id");
// When a valid snapshot is queried, there are three possibilities:
// a) The queried value was not modified after the snapshot was taken. Therefore, a snapshot entry was never
// created for this id, and all stored snapshot ids are smaller than the requested one. The value that corresponds
// to this id is the current one.
// b) The queried value was modified after the snapshot was taken. Therefore, there will be an entry with the
// requested id, and its value is the one to return.
// c) More snapshots were created after the requested one, and the queried value was later modified. There will be
// no entry for the requested id: the value that corresponds to it is that of the smallest snapshot id that is
// larger than the requested one.
//
// In summary, we need to find an element in an array, returning the index of the smallest value that is larger if
// it is not found, unless said value doesn't exist (e.g. when all values are smaller). Arrays.findUpperBound does
// exactly this.
uint256 index = snapshots.ids.findUpperBound(snapshotId);
if (index == snapshots.ids.length) {
return (false, 0);
} else {
return (true, snapshots.values[index]);
}
}
function _updateAccountSnapshot(address account) private {
_updateSnapshot(_accountBalanceSnapshots[account], balanceOf(account));
}
function _updateTotalSupplySnapshot() private {
_updateSnapshot(_totalSupplySnapshots, totalSupply());
}
function _updateSnapshot(Snapshots storage snapshots, uint256 currentValue) private {
uint256 currentId = _getCurrentSnapshotId();
if (_lastSnapshotId(snapshots.ids) < currentId) {
snapshots.ids.push(currentId);
snapshots.values.push(currentValue);
}
}
function _lastSnapshotId(uint256[] storage ids) private view returns (uint256) {
if (ids.length == 0) {
return 0;
} else {
return ids[ids.length - 1];
}
}
} | //**************************************************************************************** | LineComment | balanceOfAt | function balanceOfAt(address account, uint256 snapshotId) public view virtual returns (uint256) {
(bool snapshotted, uint256 value) = _valueAt(snapshotId, _accountBalanceSnapshots[account]);
return snapshotted ? value : balanceOf(account);
}
| /**
* @dev Retrieves the balance of `account` at the time `snapshotId` was created.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
2656,
2927
]
} | 7,189 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | ERC20Snapshot | abstract contract ERC20Snapshot is ERC20 {
// Inspired by Jordi Baylina's MiniMeToken to record historical balances:
// https://github.com/Giveth/minimd/blob/ea04d950eea153a04c51fa510b068b9dded390cb/contracts/MiniMeToken.sol
using Arrays for uint256[];
using Counters for Counters.Counter;
// Snapshotted values have arrays of ids and the value corresponding to that id. These could be an array of a
// Snapshot struct, but that would impede usage of functions that work on an array.
struct Snapshots {
uint256[] ids;
uint256[] values;
}
mapping(address => Snapshots) private _accountBalanceSnapshots;
Snapshots private _totalSupplySnapshots;
// Snapshot ids increase monotonically, with the first value being 1. An id of 0 is invalid.
Counters.Counter private _currentSnapshotId;
/**
* @dev Emitted by {_snapshot} when a snapshot identified by `id` is created.
*/
event Snapshot(uint256 id);
/**
* @dev Creates a new snapshot and returns its snapshot id.
*
* Emits a {Snapshot} event that contains the same id.
*
* {_snapshot} is `internal` and you have to decide how to expose it externally. Its usage may be restricted to a
* set of accounts, for example using {AccessControl}, or it may be open to the public.
*
* [WARNING]
* ====
* While an open way of calling {_snapshot} is required for certain trust minimization mechanisms such as forking,
* you must consider that it can potentially be used by attackers in two ways.
*
* First, it can be used to increase the cost of retrieval of values from snapshots, although it will grow
* logarithmically thus rendering this attack ineffective in the long term. Second, it can be used to target
* specific accounts and increase the cost of ERC20 transfers for them, in the ways specified in the Gas Costs
* section above.
*
* We haven't measured the actual numbers; if this is something you're interested in please reach out to us.
* ====
*/
function _snapshot() internal virtual returns (uint256) {
_currentSnapshotId.increment();
uint256 currentId = _getCurrentSnapshotId();
emit Snapshot(currentId);
return currentId;
}
/**
* @dev Get the current snapshotId
*/
function _getCurrentSnapshotId() internal view virtual returns (uint256) {
return _currentSnapshotId.current();
}
/**
* @dev Retrieves the balance of `account` at the time `snapshotId` was created.
*/
function balanceOfAt(address account, uint256 snapshotId) public view virtual returns (uint256) {
(bool snapshotted, uint256 value) = _valueAt(snapshotId, _accountBalanceSnapshots[account]);
return snapshotted ? value : balanceOf(account);
}
/**
* @dev Retrieves the total supply at the time `snapshotId` was created.
*/
function totalSupplyAt(uint256 snapshotId) public view virtual returns (uint256) {
(bool snapshotted, uint256 value) = _valueAt(snapshotId, _totalSupplySnapshots);
return snapshotted ? value : totalSupply();
}
// Update balance and/or total supply snapshots before the values are modified. This is implemented
// in the _beforeTokenTransfer hook, which is executed for _mint, _burn, and _transfer operations.
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual override {
super._beforeTokenTransfer(from, to, amount);
if (from == address(0)) {
// mint
_updateAccountSnapshot(to);
_updateTotalSupplySnapshot();
} else if (to == address(0)) {
// burn
_updateAccountSnapshot(from);
_updateTotalSupplySnapshot();
} else {
// transfer
_updateAccountSnapshot(from);
_updateAccountSnapshot(to);
}
}
function _valueAt(uint256 snapshotId, Snapshots storage snapshots) private view returns (bool, uint256) {
require(snapshotId > 0, "ERC20Snapshot: id is 0");
require(snapshotId <= _getCurrentSnapshotId(), "ERC20Snapshot: nonexistent id");
// When a valid snapshot is queried, there are three possibilities:
// a) The queried value was not modified after the snapshot was taken. Therefore, a snapshot entry was never
// created for this id, and all stored snapshot ids are smaller than the requested one. The value that corresponds
// to this id is the current one.
// b) The queried value was modified after the snapshot was taken. Therefore, there will be an entry with the
// requested id, and its value is the one to return.
// c) More snapshots were created after the requested one, and the queried value was later modified. There will be
// no entry for the requested id: the value that corresponds to it is that of the smallest snapshot id that is
// larger than the requested one.
//
// In summary, we need to find an element in an array, returning the index of the smallest value that is larger if
// it is not found, unless said value doesn't exist (e.g. when all values are smaller). Arrays.findUpperBound does
// exactly this.
uint256 index = snapshots.ids.findUpperBound(snapshotId);
if (index == snapshots.ids.length) {
return (false, 0);
} else {
return (true, snapshots.values[index]);
}
}
function _updateAccountSnapshot(address account) private {
_updateSnapshot(_accountBalanceSnapshots[account], balanceOf(account));
}
function _updateTotalSupplySnapshot() private {
_updateSnapshot(_totalSupplySnapshots, totalSupply());
}
function _updateSnapshot(Snapshots storage snapshots, uint256 currentValue) private {
uint256 currentId = _getCurrentSnapshotId();
if (_lastSnapshotId(snapshots.ids) < currentId) {
snapshots.ids.push(currentId);
snapshots.values.push(currentValue);
}
}
function _lastSnapshotId(uint256[] storage ids) private view returns (uint256) {
if (ids.length == 0) {
return 0;
} else {
return ids[ids.length - 1];
}
}
} | //**************************************************************************************** | LineComment | totalSupplyAt | function totalSupplyAt(uint256 snapshotId) public view virtual returns (uint256) {
(bool snapshotted, uint256 value) = _valueAt(snapshotId, _totalSupplySnapshots);
return snapshotted ? value : totalSupply();
}
| /**
* @dev Retrieves the total supply at the time `snapshotId` was created.
*/ | NatSpecMultiLine | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
3026,
3265
]
} | 7,190 |
NitrixToken | NitrixToken.sol | 0xfc73d0e787593bc7dd48b1c40a39116b5dc13daa | Solidity | ERC20Snapshot | abstract contract ERC20Snapshot is ERC20 {
// Inspired by Jordi Baylina's MiniMeToken to record historical balances:
// https://github.com/Giveth/minimd/blob/ea04d950eea153a04c51fa510b068b9dded390cb/contracts/MiniMeToken.sol
using Arrays for uint256[];
using Counters for Counters.Counter;
// Snapshotted values have arrays of ids and the value corresponding to that id. These could be an array of a
// Snapshot struct, but that would impede usage of functions that work on an array.
struct Snapshots {
uint256[] ids;
uint256[] values;
}
mapping(address => Snapshots) private _accountBalanceSnapshots;
Snapshots private _totalSupplySnapshots;
// Snapshot ids increase monotonically, with the first value being 1. An id of 0 is invalid.
Counters.Counter private _currentSnapshotId;
/**
* @dev Emitted by {_snapshot} when a snapshot identified by `id` is created.
*/
event Snapshot(uint256 id);
/**
* @dev Creates a new snapshot and returns its snapshot id.
*
* Emits a {Snapshot} event that contains the same id.
*
* {_snapshot} is `internal` and you have to decide how to expose it externally. Its usage may be restricted to a
* set of accounts, for example using {AccessControl}, or it may be open to the public.
*
* [WARNING]
* ====
* While an open way of calling {_snapshot} is required for certain trust minimization mechanisms such as forking,
* you must consider that it can potentially be used by attackers in two ways.
*
* First, it can be used to increase the cost of retrieval of values from snapshots, although it will grow
* logarithmically thus rendering this attack ineffective in the long term. Second, it can be used to target
* specific accounts and increase the cost of ERC20 transfers for them, in the ways specified in the Gas Costs
* section above.
*
* We haven't measured the actual numbers; if this is something you're interested in please reach out to us.
* ====
*/
function _snapshot() internal virtual returns (uint256) {
_currentSnapshotId.increment();
uint256 currentId = _getCurrentSnapshotId();
emit Snapshot(currentId);
return currentId;
}
/**
* @dev Get the current snapshotId
*/
function _getCurrentSnapshotId() internal view virtual returns (uint256) {
return _currentSnapshotId.current();
}
/**
* @dev Retrieves the balance of `account` at the time `snapshotId` was created.
*/
function balanceOfAt(address account, uint256 snapshotId) public view virtual returns (uint256) {
(bool snapshotted, uint256 value) = _valueAt(snapshotId, _accountBalanceSnapshots[account]);
return snapshotted ? value : balanceOf(account);
}
/**
* @dev Retrieves the total supply at the time `snapshotId` was created.
*/
function totalSupplyAt(uint256 snapshotId) public view virtual returns (uint256) {
(bool snapshotted, uint256 value) = _valueAt(snapshotId, _totalSupplySnapshots);
return snapshotted ? value : totalSupply();
}
// Update balance and/or total supply snapshots before the values are modified. This is implemented
// in the _beforeTokenTransfer hook, which is executed for _mint, _burn, and _transfer operations.
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual override {
super._beforeTokenTransfer(from, to, amount);
if (from == address(0)) {
// mint
_updateAccountSnapshot(to);
_updateTotalSupplySnapshot();
} else if (to == address(0)) {
// burn
_updateAccountSnapshot(from);
_updateTotalSupplySnapshot();
} else {
// transfer
_updateAccountSnapshot(from);
_updateAccountSnapshot(to);
}
}
function _valueAt(uint256 snapshotId, Snapshots storage snapshots) private view returns (bool, uint256) {
require(snapshotId > 0, "ERC20Snapshot: id is 0");
require(snapshotId <= _getCurrentSnapshotId(), "ERC20Snapshot: nonexistent id");
// When a valid snapshot is queried, there are three possibilities:
// a) The queried value was not modified after the snapshot was taken. Therefore, a snapshot entry was never
// created for this id, and all stored snapshot ids are smaller than the requested one. The value that corresponds
// to this id is the current one.
// b) The queried value was modified after the snapshot was taken. Therefore, there will be an entry with the
// requested id, and its value is the one to return.
// c) More snapshots were created after the requested one, and the queried value was later modified. There will be
// no entry for the requested id: the value that corresponds to it is that of the smallest snapshot id that is
// larger than the requested one.
//
// In summary, we need to find an element in an array, returning the index of the smallest value that is larger if
// it is not found, unless said value doesn't exist (e.g. when all values are smaller). Arrays.findUpperBound does
// exactly this.
uint256 index = snapshots.ids.findUpperBound(snapshotId);
if (index == snapshots.ids.length) {
return (false, 0);
} else {
return (true, snapshots.values[index]);
}
}
function _updateAccountSnapshot(address account) private {
_updateSnapshot(_accountBalanceSnapshots[account], balanceOf(account));
}
function _updateTotalSupplySnapshot() private {
_updateSnapshot(_totalSupplySnapshots, totalSupply());
}
function _updateSnapshot(Snapshots storage snapshots, uint256 currentValue) private {
uint256 currentId = _getCurrentSnapshotId();
if (_lastSnapshotId(snapshots.ids) < currentId) {
snapshots.ids.push(currentId);
snapshots.values.push(currentValue);
}
}
function _lastSnapshotId(uint256[] storage ids) private view returns (uint256) {
if (ids.length == 0) {
return 0;
} else {
return ids[ids.length - 1];
}
}
} | //**************************************************************************************** | LineComment | _beforeTokenTransfer | function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual override {
super._beforeTokenTransfer(from, to, amount);
if (from == address(0)) {
// mint
_updateAccountSnapshot(to);
_updateTotalSupplySnapshot();
} else if (to == address(0)) {
// burn
_updateAccountSnapshot(from);
_updateTotalSupplySnapshot();
} else {
// transfer
_updateAccountSnapshot(from);
_updateAccountSnapshot(to);
}
}
| // Update balance and/or total supply snapshots before the values are modified. This is implemented
// in the _beforeTokenTransfer hook, which is executed for _mint, _burn, and _transfer operations. | LineComment | v0.8.4+commit.c7e474f2 | MIT | ipfs://1c33956328f23e83382fedfda22be8b0abfb2d1a6b57312b7bb1489f77254728 | {
"func_code_index": [
3477,
4104
]
} | 7,191 |
DWalletToken | DWalletToken.sol | 0x33107312890cf911020351d24c15c622a7df608b | Solidity | SafeMath | contract SafeMath {
//internals
function safeMul(uint a, uint b) internal returns (uint) {
uint c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function safeSub(uint a, uint b) internal returns (uint) {
assert(b <= a);
return a - b;
}
function safeAdd(uint a, uint b) internal returns (uint) {
uint c = a + b;
assert(c>=a && c>=b);
return c;
}
} | safeMul | function safeMul(uint a, uint b) internal returns (uint) {
uint c = a * b;
assert(a == 0 || c / a == b);
return c;
}
| //internals | LineComment | v0.4.16+commit.d7661dd9 | bzzr://ae256c691336e9778873c7ded705206bd26c1d929258e675ee9686730bd4850f | {
"func_code_index": [
38,
175
]
} | 7,192 |
|||
DWalletToken | DWalletToken.sol | 0x33107312890cf911020351d24c15c622a7df608b | Solidity | DWalletToken | contract DWalletToken is SafeMath {
/* Public variables of the token */
string public standard = 'ERC20';
string public name = 'D-WALLET TOKEN';
string public symbol = 'DWT';
uint8 public decimals = 0;
uint256 public totalSupply;
address public owner;
/* ICO Start time 26 August, 2017 13:00:00 GMT*/
uint256 public startTime = 1503752400;
/* ICO Start time 25 October, 2017 17:00:00 GMT*/
uint256 public endTime = 1508950800;
/* tells if tokens have been burned already */
bool burned;
/* Create an array with all balances so that blockchain will know */
mapping (address => uint256) public balanceOf;
mapping (address => mapping (address => uint256)) public allowance;
/* Generate a public event on the blockchain to notify clients */
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
event Burned(uint amount);
// fallback function
function () payable {
owner.transfer(msg.value);
}
/* Initializes contract with initial supply tokens to the creator of the contract */
function DWalletToken() {
owner = 0x1C46b45a7d6d28E27A755448e68c03248aefd18b;
balanceOf[owner] = 10000000000; // Give the owner all initial tokens
totalSupply = 10000000000; // Update initial total supply
}
/* function to send tokens to a given address */
function transfer(address _to, uint256 _value) returns (bool success){
require (now < startTime); //check if the crowdsale is already over
require(msg.sender == owner && now < startTime + 1 years && safeSub(balanceOf[msg.sender],_value) < 1000000000); //prevent the owner of spending his share of tokens within the first year
balanceOf[msg.sender] = safeSub(balanceOf[msg.sender],_value); // Subtract from the sender
balanceOf[_to] = safeAdd(balanceOf[_to],_value); // Add the same to the recipient
Transfer(msg.sender, _to, _value); // Notify anyone listening that this transfer took place
return true;
}
/* Function to allow spender to spend token on owners behalf */
function approve(address _spender, uint256 _value) returns (bool success) {
allowance[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
/* Transferfrom function*/
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
require (now < startTime && _from!=owner); //check if the crowdsale is already over
require(_from == owner && now < startTime + 1 years && safeSub(balanceOf[_from],_value) < 1000000000);
var _allowance = allowance[_from][msg.sender];
balanceOf[_from] = safeSub(balanceOf[_from],_value); // Subtract from the sender
balanceOf[_to] = safeAdd(balanceOf[_to],_value); // Add the same to the recipient
allowance[_from][msg.sender] = safeSub(_allowance,_value);
Transfer(_from, _to, _value);
return true;
}
/* To be called when ICO is closed, burns the remaining tokens but the D-WALLET FREEZE VAULT (1000000000) and the ones reserved
* for the bounty program (24000000).
* anybody may burn the tokens after ICO ended, but only once (in case the owner holds more tokens in the future).
* this ensures that the owner will not posses a majority of the tokens. */
function burn(){
//if tokens have not been burned already and the ICO ended
if(!burned && now>endTime){
uint difference = safeSub(balanceOf[owner], 1024000000);//checked for overflow above
balanceOf[owner] = 1024000000;
totalSupply = safeSub(totalSupply, difference);
burned = true;
Burned(difference);
}
}
} | function () payable {
owner.transfer(msg.value);
| // fallback function | LineComment | v0.4.16+commit.d7661dd9 | bzzr://ae256c691336e9778873c7ded705206bd26c1d929258e675ee9686730bd4850f | {
"func_code_index": [
1041,
1106
]
} | 7,193 |
||||
DWalletToken | DWalletToken.sol | 0x33107312890cf911020351d24c15c622a7df608b | Solidity | DWalletToken | contract DWalletToken is SafeMath {
/* Public variables of the token */
string public standard = 'ERC20';
string public name = 'D-WALLET TOKEN';
string public symbol = 'DWT';
uint8 public decimals = 0;
uint256 public totalSupply;
address public owner;
/* ICO Start time 26 August, 2017 13:00:00 GMT*/
uint256 public startTime = 1503752400;
/* ICO Start time 25 October, 2017 17:00:00 GMT*/
uint256 public endTime = 1508950800;
/* tells if tokens have been burned already */
bool burned;
/* Create an array with all balances so that blockchain will know */
mapping (address => uint256) public balanceOf;
mapping (address => mapping (address => uint256)) public allowance;
/* Generate a public event on the blockchain to notify clients */
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
event Burned(uint amount);
// fallback function
function () payable {
owner.transfer(msg.value);
}
/* Initializes contract with initial supply tokens to the creator of the contract */
function DWalletToken() {
owner = 0x1C46b45a7d6d28E27A755448e68c03248aefd18b;
balanceOf[owner] = 10000000000; // Give the owner all initial tokens
totalSupply = 10000000000; // Update initial total supply
}
/* function to send tokens to a given address */
function transfer(address _to, uint256 _value) returns (bool success){
require (now < startTime); //check if the crowdsale is already over
require(msg.sender == owner && now < startTime + 1 years && safeSub(balanceOf[msg.sender],_value) < 1000000000); //prevent the owner of spending his share of tokens within the first year
balanceOf[msg.sender] = safeSub(balanceOf[msg.sender],_value); // Subtract from the sender
balanceOf[_to] = safeAdd(balanceOf[_to],_value); // Add the same to the recipient
Transfer(msg.sender, _to, _value); // Notify anyone listening that this transfer took place
return true;
}
/* Function to allow spender to spend token on owners behalf */
function approve(address _spender, uint256 _value) returns (bool success) {
allowance[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
/* Transferfrom function*/
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
require (now < startTime && _from!=owner); //check if the crowdsale is already over
require(_from == owner && now < startTime + 1 years && safeSub(balanceOf[_from],_value) < 1000000000);
var _allowance = allowance[_from][msg.sender];
balanceOf[_from] = safeSub(balanceOf[_from],_value); // Subtract from the sender
balanceOf[_to] = safeAdd(balanceOf[_to],_value); // Add the same to the recipient
allowance[_from][msg.sender] = safeSub(_allowance,_value);
Transfer(_from, _to, _value);
return true;
}
/* To be called when ICO is closed, burns the remaining tokens but the D-WALLET FREEZE VAULT (1000000000) and the ones reserved
* for the bounty program (24000000).
* anybody may burn the tokens after ICO ended, but only once (in case the owner holds more tokens in the future).
* this ensures that the owner will not posses a majority of the tokens. */
function burn(){
//if tokens have not been burned already and the ICO ended
if(!burned && now>endTime){
uint difference = safeSub(balanceOf[owner], 1024000000);//checked for overflow above
balanceOf[owner] = 1024000000;
totalSupply = safeSub(totalSupply, difference);
burned = true;
Burned(difference);
}
}
} | DWalletToken | function DWalletToken() {
owner = 0x1C46b45a7d6d28E27A755448e68c03248aefd18b;
balanceOf[owner] = 10000000000; // Give the owner all initial tokens
totalSupply = 10000000000; // Update initial total supply
}
| /* Initializes contract with initial supply tokens to the creator of the contract */ | Comment | v0.4.16+commit.d7661dd9 | bzzr://ae256c691336e9778873c7ded705206bd26c1d929258e675ee9686730bd4850f | {
"func_code_index": [
1199,
1473
]
} | 7,194 |
|||
DWalletToken | DWalletToken.sol | 0x33107312890cf911020351d24c15c622a7df608b | Solidity | DWalletToken | contract DWalletToken is SafeMath {
/* Public variables of the token */
string public standard = 'ERC20';
string public name = 'D-WALLET TOKEN';
string public symbol = 'DWT';
uint8 public decimals = 0;
uint256 public totalSupply;
address public owner;
/* ICO Start time 26 August, 2017 13:00:00 GMT*/
uint256 public startTime = 1503752400;
/* ICO Start time 25 October, 2017 17:00:00 GMT*/
uint256 public endTime = 1508950800;
/* tells if tokens have been burned already */
bool burned;
/* Create an array with all balances so that blockchain will know */
mapping (address => uint256) public balanceOf;
mapping (address => mapping (address => uint256)) public allowance;
/* Generate a public event on the blockchain to notify clients */
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
event Burned(uint amount);
// fallback function
function () payable {
owner.transfer(msg.value);
}
/* Initializes contract with initial supply tokens to the creator of the contract */
function DWalletToken() {
owner = 0x1C46b45a7d6d28E27A755448e68c03248aefd18b;
balanceOf[owner] = 10000000000; // Give the owner all initial tokens
totalSupply = 10000000000; // Update initial total supply
}
/* function to send tokens to a given address */
function transfer(address _to, uint256 _value) returns (bool success){
require (now < startTime); //check if the crowdsale is already over
require(msg.sender == owner && now < startTime + 1 years && safeSub(balanceOf[msg.sender],_value) < 1000000000); //prevent the owner of spending his share of tokens within the first year
balanceOf[msg.sender] = safeSub(balanceOf[msg.sender],_value); // Subtract from the sender
balanceOf[_to] = safeAdd(balanceOf[_to],_value); // Add the same to the recipient
Transfer(msg.sender, _to, _value); // Notify anyone listening that this transfer took place
return true;
}
/* Function to allow spender to spend token on owners behalf */
function approve(address _spender, uint256 _value) returns (bool success) {
allowance[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
/* Transferfrom function*/
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
require (now < startTime && _from!=owner); //check if the crowdsale is already over
require(_from == owner && now < startTime + 1 years && safeSub(balanceOf[_from],_value) < 1000000000);
var _allowance = allowance[_from][msg.sender];
balanceOf[_from] = safeSub(balanceOf[_from],_value); // Subtract from the sender
balanceOf[_to] = safeAdd(balanceOf[_to],_value); // Add the same to the recipient
allowance[_from][msg.sender] = safeSub(_allowance,_value);
Transfer(_from, _to, _value);
return true;
}
/* To be called when ICO is closed, burns the remaining tokens but the D-WALLET FREEZE VAULT (1000000000) and the ones reserved
* for the bounty program (24000000).
* anybody may burn the tokens after ICO ended, but only once (in case the owner holds more tokens in the future).
* this ensures that the owner will not posses a majority of the tokens. */
function burn(){
//if tokens have not been burned already and the ICO ended
if(!burned && now>endTime){
uint difference = safeSub(balanceOf[owner], 1024000000);//checked for overflow above
balanceOf[owner] = 1024000000;
totalSupply = safeSub(totalSupply, difference);
burned = true;
Burned(difference);
}
}
} | transfer | function transfer(address _to, uint256 _value) returns (bool success){
require (now < startTime); //check if the crowdsale is already over
require(msg.sender == owner && now < startTime + 1 years && safeSub(balanceOf[msg.sender],_value) < 1000000000); //prevent the owner of spending his share of tokens within the first year
balanceOf[msg.sender] = safeSub(balanceOf[msg.sender],_value); // Subtract from the sender
balanceOf[_to] = safeAdd(balanceOf[_to],_value); // Add the same to the recipient
Transfer(msg.sender, _to, _value); // Notify anyone listening that this transfer took place
return true;
}
| /* function to send tokens to a given address */ | Comment | v0.4.16+commit.d7661dd9 | bzzr://ae256c691336e9778873c7ded705206bd26c1d929258e675ee9686730bd4850f | {
"func_code_index": [
1530,
2265
]
} | 7,195 |
|||
DWalletToken | DWalletToken.sol | 0x33107312890cf911020351d24c15c622a7df608b | Solidity | DWalletToken | contract DWalletToken is SafeMath {
/* Public variables of the token */
string public standard = 'ERC20';
string public name = 'D-WALLET TOKEN';
string public symbol = 'DWT';
uint8 public decimals = 0;
uint256 public totalSupply;
address public owner;
/* ICO Start time 26 August, 2017 13:00:00 GMT*/
uint256 public startTime = 1503752400;
/* ICO Start time 25 October, 2017 17:00:00 GMT*/
uint256 public endTime = 1508950800;
/* tells if tokens have been burned already */
bool burned;
/* Create an array with all balances so that blockchain will know */
mapping (address => uint256) public balanceOf;
mapping (address => mapping (address => uint256)) public allowance;
/* Generate a public event on the blockchain to notify clients */
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
event Burned(uint amount);
// fallback function
function () payable {
owner.transfer(msg.value);
}
/* Initializes contract with initial supply tokens to the creator of the contract */
function DWalletToken() {
owner = 0x1C46b45a7d6d28E27A755448e68c03248aefd18b;
balanceOf[owner] = 10000000000; // Give the owner all initial tokens
totalSupply = 10000000000; // Update initial total supply
}
/* function to send tokens to a given address */
function transfer(address _to, uint256 _value) returns (bool success){
require (now < startTime); //check if the crowdsale is already over
require(msg.sender == owner && now < startTime + 1 years && safeSub(balanceOf[msg.sender],_value) < 1000000000); //prevent the owner of spending his share of tokens within the first year
balanceOf[msg.sender] = safeSub(balanceOf[msg.sender],_value); // Subtract from the sender
balanceOf[_to] = safeAdd(balanceOf[_to],_value); // Add the same to the recipient
Transfer(msg.sender, _to, _value); // Notify anyone listening that this transfer took place
return true;
}
/* Function to allow spender to spend token on owners behalf */
function approve(address _spender, uint256 _value) returns (bool success) {
allowance[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
/* Transferfrom function*/
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
require (now < startTime && _from!=owner); //check if the crowdsale is already over
require(_from == owner && now < startTime + 1 years && safeSub(balanceOf[_from],_value) < 1000000000);
var _allowance = allowance[_from][msg.sender];
balanceOf[_from] = safeSub(balanceOf[_from],_value); // Subtract from the sender
balanceOf[_to] = safeAdd(balanceOf[_to],_value); // Add the same to the recipient
allowance[_from][msg.sender] = safeSub(_allowance,_value);
Transfer(_from, _to, _value);
return true;
}
/* To be called when ICO is closed, burns the remaining tokens but the D-WALLET FREEZE VAULT (1000000000) and the ones reserved
* for the bounty program (24000000).
* anybody may burn the tokens after ICO ended, but only once (in case the owner holds more tokens in the future).
* this ensures that the owner will not posses a majority of the tokens. */
function burn(){
//if tokens have not been burned already and the ICO ended
if(!burned && now>endTime){
uint difference = safeSub(balanceOf[owner], 1024000000);//checked for overflow above
balanceOf[owner] = 1024000000;
totalSupply = safeSub(totalSupply, difference);
burned = true;
Burned(difference);
}
}
} | approve | function approve(address _spender, uint256 _value) returns (bool success) {
allowance[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
| /* Function to allow spender to spend token on owners behalf */ | Comment | v0.4.16+commit.d7661dd9 | bzzr://ae256c691336e9778873c7ded705206bd26c1d929258e675ee9686730bd4850f | {
"func_code_index": [
2337,
2546
]
} | 7,196 |
|||
DWalletToken | DWalletToken.sol | 0x33107312890cf911020351d24c15c622a7df608b | Solidity | DWalletToken | contract DWalletToken is SafeMath {
/* Public variables of the token */
string public standard = 'ERC20';
string public name = 'D-WALLET TOKEN';
string public symbol = 'DWT';
uint8 public decimals = 0;
uint256 public totalSupply;
address public owner;
/* ICO Start time 26 August, 2017 13:00:00 GMT*/
uint256 public startTime = 1503752400;
/* ICO Start time 25 October, 2017 17:00:00 GMT*/
uint256 public endTime = 1508950800;
/* tells if tokens have been burned already */
bool burned;
/* Create an array with all balances so that blockchain will know */
mapping (address => uint256) public balanceOf;
mapping (address => mapping (address => uint256)) public allowance;
/* Generate a public event on the blockchain to notify clients */
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
event Burned(uint amount);
// fallback function
function () payable {
owner.transfer(msg.value);
}
/* Initializes contract with initial supply tokens to the creator of the contract */
function DWalletToken() {
owner = 0x1C46b45a7d6d28E27A755448e68c03248aefd18b;
balanceOf[owner] = 10000000000; // Give the owner all initial tokens
totalSupply = 10000000000; // Update initial total supply
}
/* function to send tokens to a given address */
function transfer(address _to, uint256 _value) returns (bool success){
require (now < startTime); //check if the crowdsale is already over
require(msg.sender == owner && now < startTime + 1 years && safeSub(balanceOf[msg.sender],_value) < 1000000000); //prevent the owner of spending his share of tokens within the first year
balanceOf[msg.sender] = safeSub(balanceOf[msg.sender],_value); // Subtract from the sender
balanceOf[_to] = safeAdd(balanceOf[_to],_value); // Add the same to the recipient
Transfer(msg.sender, _to, _value); // Notify anyone listening that this transfer took place
return true;
}
/* Function to allow spender to spend token on owners behalf */
function approve(address _spender, uint256 _value) returns (bool success) {
allowance[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
/* Transferfrom function*/
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
require (now < startTime && _from!=owner); //check if the crowdsale is already over
require(_from == owner && now < startTime + 1 years && safeSub(balanceOf[_from],_value) < 1000000000);
var _allowance = allowance[_from][msg.sender];
balanceOf[_from] = safeSub(balanceOf[_from],_value); // Subtract from the sender
balanceOf[_to] = safeAdd(balanceOf[_to],_value); // Add the same to the recipient
allowance[_from][msg.sender] = safeSub(_allowance,_value);
Transfer(_from, _to, _value);
return true;
}
/* To be called when ICO is closed, burns the remaining tokens but the D-WALLET FREEZE VAULT (1000000000) and the ones reserved
* for the bounty program (24000000).
* anybody may burn the tokens after ICO ended, but only once (in case the owner holds more tokens in the future).
* this ensures that the owner will not posses a majority of the tokens. */
function burn(){
//if tokens have not been burned already and the ICO ended
if(!burned && now>endTime){
uint difference = safeSub(balanceOf[owner], 1024000000);//checked for overflow above
balanceOf[owner] = 1024000000;
totalSupply = safeSub(totalSupply, difference);
burned = true;
Burned(difference);
}
}
} | transferFrom | function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
require (now < startTime && _from!=owner); //check if the crowdsale is already over
require(_from == owner && now < startTime + 1 years && safeSub(balanceOf[_from],_value) < 1000000000);
var _allowance = allowance[_from][msg.sender];
balanceOf[_from] = safeSub(balanceOf[_from],_value); // Subtract from the sender
balanceOf[_to] = safeAdd(balanceOf[_to],_value); // Add the same to the recipient
allowance[_from][msg.sender] = safeSub(_allowance,_value);
Transfer(_from, _to, _value);
return true;
}
| /* Transferfrom function*/ | Comment | v0.4.16+commit.d7661dd9 | bzzr://ae256c691336e9778873c7ded705206bd26c1d929258e675ee9686730bd4850f | {
"func_code_index": [
2583,
3261
]
} | 7,197 |
|||
DWalletToken | DWalletToken.sol | 0x33107312890cf911020351d24c15c622a7df608b | Solidity | DWalletToken | contract DWalletToken is SafeMath {
/* Public variables of the token */
string public standard = 'ERC20';
string public name = 'D-WALLET TOKEN';
string public symbol = 'DWT';
uint8 public decimals = 0;
uint256 public totalSupply;
address public owner;
/* ICO Start time 26 August, 2017 13:00:00 GMT*/
uint256 public startTime = 1503752400;
/* ICO Start time 25 October, 2017 17:00:00 GMT*/
uint256 public endTime = 1508950800;
/* tells if tokens have been burned already */
bool burned;
/* Create an array with all balances so that blockchain will know */
mapping (address => uint256) public balanceOf;
mapping (address => mapping (address => uint256)) public allowance;
/* Generate a public event on the blockchain to notify clients */
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
event Burned(uint amount);
// fallback function
function () payable {
owner.transfer(msg.value);
}
/* Initializes contract with initial supply tokens to the creator of the contract */
function DWalletToken() {
owner = 0x1C46b45a7d6d28E27A755448e68c03248aefd18b;
balanceOf[owner] = 10000000000; // Give the owner all initial tokens
totalSupply = 10000000000; // Update initial total supply
}
/* function to send tokens to a given address */
function transfer(address _to, uint256 _value) returns (bool success){
require (now < startTime); //check if the crowdsale is already over
require(msg.sender == owner && now < startTime + 1 years && safeSub(balanceOf[msg.sender],_value) < 1000000000); //prevent the owner of spending his share of tokens within the first year
balanceOf[msg.sender] = safeSub(balanceOf[msg.sender],_value); // Subtract from the sender
balanceOf[_to] = safeAdd(balanceOf[_to],_value); // Add the same to the recipient
Transfer(msg.sender, _to, _value); // Notify anyone listening that this transfer took place
return true;
}
/* Function to allow spender to spend token on owners behalf */
function approve(address _spender, uint256 _value) returns (bool success) {
allowance[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
/* Transferfrom function*/
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
require (now < startTime && _from!=owner); //check if the crowdsale is already over
require(_from == owner && now < startTime + 1 years && safeSub(balanceOf[_from],_value) < 1000000000);
var _allowance = allowance[_from][msg.sender];
balanceOf[_from] = safeSub(balanceOf[_from],_value); // Subtract from the sender
balanceOf[_to] = safeAdd(balanceOf[_to],_value); // Add the same to the recipient
allowance[_from][msg.sender] = safeSub(_allowance,_value);
Transfer(_from, _to, _value);
return true;
}
/* To be called when ICO is closed, burns the remaining tokens but the D-WALLET FREEZE VAULT (1000000000) and the ones reserved
* for the bounty program (24000000).
* anybody may burn the tokens after ICO ended, but only once (in case the owner holds more tokens in the future).
* this ensures that the owner will not posses a majority of the tokens. */
function burn(){
//if tokens have not been burned already and the ICO ended
if(!burned && now>endTime){
uint difference = safeSub(balanceOf[owner], 1024000000);//checked for overflow above
balanceOf[owner] = 1024000000;
totalSupply = safeSub(totalSupply, difference);
burned = true;
Burned(difference);
}
}
} | burn | function burn(){
//if tokens have not been burned already and the ICO ended
if(!burned && now>endTime){
uint difference = safeSub(balanceOf[owner], 1024000000);//checked for overflow above
balanceOf[owner] = 1024000000;
totalSupply = safeSub(totalSupply, difference);
burned = true;
Burned(difference);
}
}
| /* To be called when ICO is closed, burns the remaining tokens but the D-WALLET FREEZE VAULT (1000000000) and the ones reserved
* for the bounty program (24000000).
* anybody may burn the tokens after ICO ended, but only once (in case the owner holds more tokens in the future).
* this ensures that the owner will not posses a majority of the tokens. */ | Comment | v0.4.16+commit.d7661dd9 | bzzr://ae256c691336e9778873c7ded705206bd26c1d929258e675ee9686730bd4850f | {
"func_code_index": [
3643,
4012
]
} | 7,198 |
|||
ReferralCircle | ReferralCircle.sol | 0x8e4428008900589869a8d38c69d7b905823de144 | Solidity | Pausable | contract Pausable is Ownable {
event Pause();
event Unpause();
bool public paused = false;
// Modifier to make a function callable only when the contract is not paused.
modifier whenNotPaused() {
require(!paused);
_;
}
// Modifier to make a function callable only when the contract is paused.
modifier whenPaused() {
require(paused);
_;
}
// Сalled by the owner to pause, triggers stopped state
function pause() onlyOwner whenNotPaused public {
paused = true;
emit Pause();
}
// Сalled by the owner to unpause, returns to normal state
function unpause() onlyOwner whenPaused public {
paused = false;
emit Unpause();
}
} | // Pausable contract which allows children to implement an emergency stop mechanism. | LineComment | pause | function pause() onlyOwner whenNotPaused public {
paused = true;
emit Pause();
}
| // Сalled by the owner to pause, triggers stopped state | LineComment | v0.4.25+commit.59dbf8f1 | bzzr://17103c3e2fcd054d9615118d0a639fe764b876757fc004b8606bd97656441eed | {
"func_code_index": [
492,
600
]
} | 7,199 |
Subsets and Splits
No saved queries yet
Save your SQL queries to embed, download, and access them later. Queries will appear here once saved.