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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | 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
);
} | /**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/ | NatSpecMultiLine | totalSupply | function totalSupply() external view returns (uint256);
| /**
* @dev Returns the amount of tokens in existence.
*/ | NatSpecMultiLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
94,
154
]
} | 59,361 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | 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
);
} | /**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/ | NatSpecMultiLine | balanceOf | function balanceOf(address account) external view returns (uint256);
| /**
* @dev Returns the amount of tokens owned by `account`.
*/ | NatSpecMultiLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
237,
310
]
} | 59,362 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | 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
);
} | /**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/ | NatSpecMultiLine | 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 | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
534,
634
]
} | 59,363 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | 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
);
} | /**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/ | NatSpecMultiLine | 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 | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
913,
1028
]
} | 59,364 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | 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
);
} | /**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/ | NatSpecMultiLine | 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 | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
1692,
1771
]
} | 59,365 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | 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
);
} | /**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/ | NatSpecMultiLine | 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 | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
2084,
2220
]
} | 59,366 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | 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);
} | /**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/ | NatSpecMultiLine | name | function name() external view returns (string memory);
| /**
* @dev Returns the name of the token.
*/ | NatSpecMultiLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
100,
159
]
} | 59,367 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | 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);
} | /**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/ | NatSpecMultiLine | symbol | function symbol() external view returns (string memory);
| /**
* @dev Returns the symbol of the token.
*/ | NatSpecMultiLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
226,
287
]
} | 59,368 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | 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);
} | /**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/ | NatSpecMultiLine | decimals | function decimals() external view returns (uint8);
| /**
* @dev Returns the decimals places of the token.
*/ | NatSpecMultiLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
363,
418
]
} | 59,369 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
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 {}
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | name | function name() public view virtual override returns (string memory) {
return _name;
}
| /**
* @dev Returns the name of the token.
*/ | NatSpecMultiLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
776,
881
]
} | 59,370 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
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 {}
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | 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 | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
995,
1104
]
} | 59,371 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
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 {}
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | 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 | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
1738,
1836
]
} | 59,372 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
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 {}
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | totalSupply | function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
| /**
* @dev See {IERC20-totalSupply}.
*/ | NatSpecMultiLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
1896,
2009
]
} | 59,373 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
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 {}
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | balanceOf | function balanceOf(address account)
public
view
virtual
override
returns (uint256)
{
return _balances[account];
}
| /**
* @dev See {IERC20-balanceOf}.
*/ | NatSpecMultiLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
2067,
2249
]
} | 59,374 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
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 {}
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | 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 | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
2457,
2678
]
} | 59,375 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
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 {}
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | allowance | function allowance(address owner, address spender)
public
view
virtual
override
returns (uint256)
{
return _allowances[owner][spender];
}
| /**
* @dev See {IERC20-allowance}.
*/ | NatSpecMultiLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
2736,
2942
]
} | 59,376 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
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 {}
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | 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 | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
3084,
3299
]
} | 59,377 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
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 {}
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | 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 | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
3776,
4310
]
} | 59,378 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
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 {}
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | 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 | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
4714,
5016
]
} | 59,379 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
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 {}
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | 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 | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
5514,
6001
]
} | 59,380 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
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 {}
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | _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 | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
6486,
7261
]
} | 59,381 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
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 {}
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | _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 | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
7543,
7947
]
} | 59,382 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
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 {}
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | _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 | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
8275,
8871
]
} | 59,383 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
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 {}
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | _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 | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
9304,
9689
]
} | 59,384 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
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 {}
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | _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 | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
10284,
10414
]
} | 59,385 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | ERC20 | contract ERC20 is Context, IERC20, IERC20Metadata {
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 {}
} | /**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/ | NatSpecMultiLine | _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 | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
11013,
11142
]
} | 59,386 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | IERC165 | interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
} | /**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/ | NatSpecMultiLine | supportsInterface | function supportsInterface(bytes4 interfaceId) external view returns (bool);
| /**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/ | NatSpecMultiLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
374,
455
]
} | 59,387 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | ERC165 | abstract contract ERC165 is IERC165 {
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
} | /**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/ | NatSpecMultiLine | supportsInterface | function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
| /**
* @dev See {IERC165-supportsInterface}.
*/ | NatSpecMultiLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
103,
265
]
} | 59,388 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | IERC721 | interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
} | /**
* @dev Required interface of an ERC721 compliant contract.
*/ | NatSpecMultiLine | balanceOf | function balanceOf(address owner) external view returns (uint256 balance);
| /**
* @dev Returns the number of tokens in ``owner``'s account.
*/ | NatSpecMultiLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
719,
798
]
} | 59,389 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | IERC721 | interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
} | /**
* @dev Required interface of an ERC721 compliant contract.
*/ | NatSpecMultiLine | ownerOf | function ownerOf(uint256 tokenId) external view returns (address owner);
| /**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/ | NatSpecMultiLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
944,
1021
]
} | 59,390 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | IERC721 | interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
} | /**
* @dev Required interface of an ERC721 compliant contract.
*/ | NatSpecMultiLine | safeTransferFrom | function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
| /**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/ | NatSpecMultiLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
1733,
1850
]
} | 59,391 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | IERC721 | interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
} | /**
* @dev Required interface of an ERC721 compliant contract.
*/ | NatSpecMultiLine | transferFrom | function transferFrom(
address from,
address to,
uint256 tokenId
) external;
| /**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/ | NatSpecMultiLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
2376,
2489
]
} | 59,392 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | IERC721 | interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
} | /**
* @dev Required interface of an ERC721 compliant contract.
*/ | NatSpecMultiLine | approve | function approve(address to, uint256 tokenId) external;
| /**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/ | NatSpecMultiLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
2962,
3022
]
} | 59,393 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | IERC721 | interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
} | /**
* @dev Required interface of an ERC721 compliant contract.
*/ | NatSpecMultiLine | getApproved | function getApproved(uint256 tokenId) external view returns (address operator);
| /**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/ | NatSpecMultiLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
3176,
3260
]
} | 59,394 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | IERC721 | interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
} | /**
* @dev Required interface of an ERC721 compliant contract.
*/ | NatSpecMultiLine | setApprovalForAll | function setApprovalForAll(address operator, bool _approved) external;
| /**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/ | NatSpecMultiLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
3587,
3662
]
} | 59,395 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | IERC721 | interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
} | /**
* @dev Required interface of an ERC721 compliant contract.
*/ | NatSpecMultiLine | isApprovedForAll | function isApprovedForAll(address owner, address operator) external view returns (bool);
| /**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/ | NatSpecMultiLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
3813,
3906
]
} | 59,396 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | IERC721 | interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
} | /**
* @dev Required interface of an ERC721 compliant contract.
*/ | NatSpecMultiLine | safeTransferFrom | function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
| /**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/ | NatSpecMultiLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
4483,
4630
]
} | 59,397 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | IERC721Enumerable | interface IERC721Enumerable is IERC721 {
/**
* @dev Returns the total amount of tokens stored by the contract.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns a token ID owned by `owner` at a given `index` of its token list.
* Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
*/
function tokenOfOwnerByIndex(address owner, uint256 index)
external
view
returns (uint256 tokenId);
/**
* @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
* Use along with {totalSupply} to enumerate all tokens.
*/
function tokenByIndex(uint256 index) external view returns (uint256);
} | /**
* @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/ | NatSpecMultiLine | totalSupply | function totalSupply() external view returns (uint256);
| /**
* @dev Returns the total amount of tokens stored by the contract.
*/ | NatSpecMultiLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
132,
192
]
} | 59,398 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | IERC721Enumerable | interface IERC721Enumerable is IERC721 {
/**
* @dev Returns the total amount of tokens stored by the contract.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns a token ID owned by `owner` at a given `index` of its token list.
* Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
*/
function tokenOfOwnerByIndex(address owner, uint256 index)
external
view
returns (uint256 tokenId);
/**
* @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
* Use along with {totalSupply} to enumerate all tokens.
*/
function tokenByIndex(uint256 index) external view returns (uint256);
} | /**
* @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/ | NatSpecMultiLine | tokenOfOwnerByIndex | function tokenOfOwnerByIndex(address owner, uint256 index)
external
view
returns (uint256 tokenId);
| /**
* @dev Returns a token ID owned by `owner` at a given `index` of its token list.
* Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
*/ | NatSpecMultiLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
375,
506
]
} | 59,399 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | IERC721Enumerable | interface IERC721Enumerable is IERC721 {
/**
* @dev Returns the total amount of tokens stored by the contract.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns a token ID owned by `owner` at a given `index` of its token list.
* Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
*/
function tokenOfOwnerByIndex(address owner, uint256 index)
external
view
returns (uint256 tokenId);
/**
* @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
* Use along with {totalSupply} to enumerate all tokens.
*/
function tokenByIndex(uint256 index) external view returns (uint256);
} | /**
* @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/ | NatSpecMultiLine | tokenByIndex | function tokenByIndex(uint256 index) external view returns (uint256);
| /**
* @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
* Use along with {totalSupply} to enumerate all tokens.
*/ | NatSpecMultiLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
682,
756
]
} | 59,400 |
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | FirstGold | contract FirstGold is Context, Ownable, ERC20 {
// first contract is available at https://etherscan.io/address/0xff9c1b15b16263c61d017ee9f65c50e4ae0113d7
address public firstContractAddress =
0xc9Cb0FEe73f060Db66D2693D92d75c825B1afdbF;
IERC721Enumerable public firstContract;
// Give out 10,000 First Gold for every first Bag that a user holds
uint256 public FirstGoldPerTokenId = 10000 * (10**decimals());
// tokenIdStart of 1 is First on the following lines in the first contract:
/**
function claim(uint256 tokenId) public nonReentrant {
require(tokenId > 0 && tokenId < 7778, "Token ID invalid");
_safeMint(_msgSender(), tokenId);
}
*/
uint256 public tokenIdStart = 1;
// tokenIdEnd of 8000 is First on the following lines in the first contract:
/**
function ownerClaim(uint256 tokenId) public nonReentrant onlyOwner {
require(tokenId > 7777 && tokenId < 8001, "Token ID invalid");
_safeMint(owner(), tokenId);
}
*/
uint256 public tokenIdEnd = 8000;
// Seasons are used to allow users to claim tokens regularly. Seasons are
// decided by the DAO.
uint256 public season = 0;
// Track claimed tokens within a season
// IMPORTANT: The format of the mapping is:
// claimedForSeason[season][tokenId][claimed]
mapping(uint256 => mapping(uint256 => bool)) public seasonClaimedByTokenId;
constructor() Ownable() ERC20("First Gold", "BGLD") {
// Transfer ownership to the first DAO
// Ownable by OpenZeppelin automatically sets owner to msg.sender, but
// we're going to be using a separate wallet for deployment
transferOwnership(_msgSender());
firstContract = IERC721Enumerable(firstContractAddress);
}
/// @notice Claim First Gold for a given first ID
/// @param tokenId The tokenId of the first NFT
function claimById(uint256 tokenId) external {
// Follow the Checks-Effects-Interactions pattern to prevent reentrancy
// attacks
// Checks
// Check that the msgSender owns the token that is being claimed
require(
_msgSender() == firstContract.ownerOf(tokenId),
"MUST_OWN_TOKEN_ID"
);
// Further Checks, Effects, and Interactions are contained within the
// _claim() function
_claim(tokenId, _msgSender());
}
/// @notice Claim First Gold for all tokens owned by the sender
/// @notice This function will run out of gas if you have too much first! If
/// this is a concern, you should use claimRangeForOwner and claim First
/// Gold in batches.
function claimAllForOwner() external {
uint256 tokenBalanceOwner = firstContract.balanceOf(_msgSender());
// Checks
require(tokenBalanceOwner > 0, "NO_TOKENS_OWNED");
// i < tokenBalanceOwner because tokenBalanceOwner is 1-indexed
for (uint256 i = 0; i < tokenBalanceOwner; i++) {
// Further Checks, Effects, and Interactions are contained within
// the _claim() function
_claim(
firstContract.tokenOfOwnerByIndex(_msgSender(), i),
_msgSender()
);
}
}
/// @notice Claim First Gold for all tokens owned by the sender within a
/// given range
/// @notice This function is useful if you own too much first to claim all at
/// once or if you want to leave some first unclaimed. If you leave first
/// unclaimed, however, you cannot claim it once the next season starts.
function claimRangeForOwner(uint256 ownerIndexStart, uint256 ownerIndexEnd)
external
{
uint256 tokenBalanceOwner = firstContract.balanceOf(_msgSender());
// Checks
require(tokenBalanceOwner > 0, "NO_TOKENS_OWNED");
// We use < for ownerIndexEnd and tokenBalanceOwner because
// tokenOfOwnerByIndex is 0-indexed while the token balance is 1-indexed
require(
ownerIndexStart >= 0 && ownerIndexEnd < tokenBalanceOwner,
"INDEX_OUT_OF_RANGE"
);
// i <= ownerIndexEnd because ownerIndexEnd is 0-indexed
for (uint256 i = ownerIndexStart; i <= ownerIndexEnd; i++) {
// Further Checks, Effects, and Interactions are contained within
// the _claim() function
_claim(
firstContract.tokenOfOwnerByIndex(_msgSender(), i),
_msgSender()
);
}
}
/// @dev Internal function to mint first upon claiming
function _claim(uint256 tokenId, address tokenOwner) internal {
// Checks
// Check that the token ID is in range
// We use >= and <= to here because all of the token IDs are 0-indexed
require(
tokenId >= tokenIdStart && tokenId <= tokenIdEnd,
"TOKEN_ID_OUT_OF_RANGE"
);
// Check that First Gold have not already been claimed this season
// for a given tokenId
require(
!seasonClaimedByTokenId[season][tokenId],
"GOLD_CLAIMED_FOR_TOKEN_ID"
);
// Effects
// Mark that First Gold has been claimed for this season for the
// given tokenId
seasonClaimedByTokenId[season][tokenId] = true;
// Interactions
// Send First Gold to the owner of the token ID
_mint(tokenOwner, FirstGoldPerTokenId);
}
/// @notice Allows the DAO to mint new tokens for use within the first
/// Ecosystem
/// @param amountDisplayValue The amount of first to mint. This should be
/// input as the display value, not in raw decimals. If you want to mint
/// 100 first, you should enter "100" rather than the value of 100 * 10^18.
function daoMint(uint256 amountDisplayValue) external onlyOwner {
_mint(owner(), amountDisplayValue * (10**decimals()));
}
/// @notice Allows the DAO to set a new contract address for first. This is
/// relevant in the event that first migrates to a new contract.
/// @param firstContractAddress_ The new contract address for first
function daoSetfirstContractAddress(address firstContractAddress_)
external
onlyOwner
{
firstContractAddress = firstContractAddress_;
firstContract = IERC721Enumerable(firstContractAddress);
}
/// @notice Allows the DAO to set the token IDs that are eligible to claim
/// first
/// @param tokenIdStart_ The start of the eligible token range
/// @param tokenIdEnd_ The end of the eligible token range
/// @dev This is relevant in case a future first contract has a different
/// total supply of first
function daoSetTokenIdRange(uint256 tokenIdStart_, uint256 tokenIdEnd_)
external
onlyOwner
{
tokenIdStart = tokenIdStart_;
tokenIdEnd = tokenIdEnd_;
}
/// @notice Allows the DAO to set a season for new First Gold claims
/// @param season_ The season to use for claiming first
function daoSetSeason(uint256 season_) public onlyOwner {
season = season_;
}
/// @notice Allows the DAO to set the amount of First Gold that is
/// claimed per token ID
/// @param FirstGoldDisplayValue The amount of first a user can claim.
/// This should be input as the display value, not in raw decimals. If you
/// want to mint 100 first, you should enter "100" rather than the value of
/// 100 * 10^18.
function daoSetFirstGoldPerTokenId(uint256 FirstGoldDisplayValue)
public
onlyOwner
{
FirstGoldPerTokenId = FirstGoldDisplayValue * (10**decimals());
}
/// @notice Allows the DAO to set the season and First Gold per token ID
/// in one transaction. This ensures that there is not a gap where a user
/// can claim more First Gold than others
/// @param season_ The season to use for claiming first
/// @param FirstGoldDisplayValue The amount of first a user can claim.
/// This should be input as the display value, not in raw decimals. If you
/// want to mint 100 first, you should enter "100" rather than the value of
/// 100 * 10^18.
/// @dev We would save a tiny amount of gas by modifying the season and
/// FirstGold variables directly. It is better practice for security,
/// however, to avoid repeating code. This function is so rarely used that
/// it's not worth moving these values into their own internal function to
/// skip the gas used on the modifier check.
function daoSetSeasonAndFirstGoldPerTokenID(
uint256 season_,
uint256 FirstGoldDisplayValue
) external onlyOwner {
daoSetSeason(season_);
daoSetFirstGoldPerTokenId(FirstGoldDisplayValue);
}
} | claimById | function claimById(uint256 tokenId) external {
// Follow the Checks-Effects-Interactions pattern to prevent reentrancy
// attacks
// Checks
// Check that the msgSender owns the token that is being claimed
require(
_msgSender() == firstContract.ownerOf(tokenId),
"MUST_OWN_TOKEN_ID"
);
// Further Checks, Effects, and Interactions are contained within the
// _claim() function
_claim(tokenId, _msgSender());
}
| /// @notice Claim First Gold for a given first ID
/// @param tokenId The tokenId of the first NFT | NatSpecSingleLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
1948,
2479
]
} | 59,401 |
||
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | FirstGold | contract FirstGold is Context, Ownable, ERC20 {
// first contract is available at https://etherscan.io/address/0xff9c1b15b16263c61d017ee9f65c50e4ae0113d7
address public firstContractAddress =
0xc9Cb0FEe73f060Db66D2693D92d75c825B1afdbF;
IERC721Enumerable public firstContract;
// Give out 10,000 First Gold for every first Bag that a user holds
uint256 public FirstGoldPerTokenId = 10000 * (10**decimals());
// tokenIdStart of 1 is First on the following lines in the first contract:
/**
function claim(uint256 tokenId) public nonReentrant {
require(tokenId > 0 && tokenId < 7778, "Token ID invalid");
_safeMint(_msgSender(), tokenId);
}
*/
uint256 public tokenIdStart = 1;
// tokenIdEnd of 8000 is First on the following lines in the first contract:
/**
function ownerClaim(uint256 tokenId) public nonReentrant onlyOwner {
require(tokenId > 7777 && tokenId < 8001, "Token ID invalid");
_safeMint(owner(), tokenId);
}
*/
uint256 public tokenIdEnd = 8000;
// Seasons are used to allow users to claim tokens regularly. Seasons are
// decided by the DAO.
uint256 public season = 0;
// Track claimed tokens within a season
// IMPORTANT: The format of the mapping is:
// claimedForSeason[season][tokenId][claimed]
mapping(uint256 => mapping(uint256 => bool)) public seasonClaimedByTokenId;
constructor() Ownable() ERC20("First Gold", "BGLD") {
// Transfer ownership to the first DAO
// Ownable by OpenZeppelin automatically sets owner to msg.sender, but
// we're going to be using a separate wallet for deployment
transferOwnership(_msgSender());
firstContract = IERC721Enumerable(firstContractAddress);
}
/// @notice Claim First Gold for a given first ID
/// @param tokenId The tokenId of the first NFT
function claimById(uint256 tokenId) external {
// Follow the Checks-Effects-Interactions pattern to prevent reentrancy
// attacks
// Checks
// Check that the msgSender owns the token that is being claimed
require(
_msgSender() == firstContract.ownerOf(tokenId),
"MUST_OWN_TOKEN_ID"
);
// Further Checks, Effects, and Interactions are contained within the
// _claim() function
_claim(tokenId, _msgSender());
}
/// @notice Claim First Gold for all tokens owned by the sender
/// @notice This function will run out of gas if you have too much first! If
/// this is a concern, you should use claimRangeForOwner and claim First
/// Gold in batches.
function claimAllForOwner() external {
uint256 tokenBalanceOwner = firstContract.balanceOf(_msgSender());
// Checks
require(tokenBalanceOwner > 0, "NO_TOKENS_OWNED");
// i < tokenBalanceOwner because tokenBalanceOwner is 1-indexed
for (uint256 i = 0; i < tokenBalanceOwner; i++) {
// Further Checks, Effects, and Interactions are contained within
// the _claim() function
_claim(
firstContract.tokenOfOwnerByIndex(_msgSender(), i),
_msgSender()
);
}
}
/// @notice Claim First Gold for all tokens owned by the sender within a
/// given range
/// @notice This function is useful if you own too much first to claim all at
/// once or if you want to leave some first unclaimed. If you leave first
/// unclaimed, however, you cannot claim it once the next season starts.
function claimRangeForOwner(uint256 ownerIndexStart, uint256 ownerIndexEnd)
external
{
uint256 tokenBalanceOwner = firstContract.balanceOf(_msgSender());
// Checks
require(tokenBalanceOwner > 0, "NO_TOKENS_OWNED");
// We use < for ownerIndexEnd and tokenBalanceOwner because
// tokenOfOwnerByIndex is 0-indexed while the token balance is 1-indexed
require(
ownerIndexStart >= 0 && ownerIndexEnd < tokenBalanceOwner,
"INDEX_OUT_OF_RANGE"
);
// i <= ownerIndexEnd because ownerIndexEnd is 0-indexed
for (uint256 i = ownerIndexStart; i <= ownerIndexEnd; i++) {
// Further Checks, Effects, and Interactions are contained within
// the _claim() function
_claim(
firstContract.tokenOfOwnerByIndex(_msgSender(), i),
_msgSender()
);
}
}
/// @dev Internal function to mint first upon claiming
function _claim(uint256 tokenId, address tokenOwner) internal {
// Checks
// Check that the token ID is in range
// We use >= and <= to here because all of the token IDs are 0-indexed
require(
tokenId >= tokenIdStart && tokenId <= tokenIdEnd,
"TOKEN_ID_OUT_OF_RANGE"
);
// Check that First Gold have not already been claimed this season
// for a given tokenId
require(
!seasonClaimedByTokenId[season][tokenId],
"GOLD_CLAIMED_FOR_TOKEN_ID"
);
// Effects
// Mark that First Gold has been claimed for this season for the
// given tokenId
seasonClaimedByTokenId[season][tokenId] = true;
// Interactions
// Send First Gold to the owner of the token ID
_mint(tokenOwner, FirstGoldPerTokenId);
}
/// @notice Allows the DAO to mint new tokens for use within the first
/// Ecosystem
/// @param amountDisplayValue The amount of first to mint. This should be
/// input as the display value, not in raw decimals. If you want to mint
/// 100 first, you should enter "100" rather than the value of 100 * 10^18.
function daoMint(uint256 amountDisplayValue) external onlyOwner {
_mint(owner(), amountDisplayValue * (10**decimals()));
}
/// @notice Allows the DAO to set a new contract address for first. This is
/// relevant in the event that first migrates to a new contract.
/// @param firstContractAddress_ The new contract address for first
function daoSetfirstContractAddress(address firstContractAddress_)
external
onlyOwner
{
firstContractAddress = firstContractAddress_;
firstContract = IERC721Enumerable(firstContractAddress);
}
/// @notice Allows the DAO to set the token IDs that are eligible to claim
/// first
/// @param tokenIdStart_ The start of the eligible token range
/// @param tokenIdEnd_ The end of the eligible token range
/// @dev This is relevant in case a future first contract has a different
/// total supply of first
function daoSetTokenIdRange(uint256 tokenIdStart_, uint256 tokenIdEnd_)
external
onlyOwner
{
tokenIdStart = tokenIdStart_;
tokenIdEnd = tokenIdEnd_;
}
/// @notice Allows the DAO to set a season for new First Gold claims
/// @param season_ The season to use for claiming first
function daoSetSeason(uint256 season_) public onlyOwner {
season = season_;
}
/// @notice Allows the DAO to set the amount of First Gold that is
/// claimed per token ID
/// @param FirstGoldDisplayValue The amount of first a user can claim.
/// This should be input as the display value, not in raw decimals. If you
/// want to mint 100 first, you should enter "100" rather than the value of
/// 100 * 10^18.
function daoSetFirstGoldPerTokenId(uint256 FirstGoldDisplayValue)
public
onlyOwner
{
FirstGoldPerTokenId = FirstGoldDisplayValue * (10**decimals());
}
/// @notice Allows the DAO to set the season and First Gold per token ID
/// in one transaction. This ensures that there is not a gap where a user
/// can claim more First Gold than others
/// @param season_ The season to use for claiming first
/// @param FirstGoldDisplayValue The amount of first a user can claim.
/// This should be input as the display value, not in raw decimals. If you
/// want to mint 100 first, you should enter "100" rather than the value of
/// 100 * 10^18.
/// @dev We would save a tiny amount of gas by modifying the season and
/// FirstGold variables directly. It is better practice for security,
/// however, to avoid repeating code. This function is so rarely used that
/// it's not worth moving these values into their own internal function to
/// skip the gas used on the modifier check.
function daoSetSeasonAndFirstGoldPerTokenID(
uint256 season_,
uint256 FirstGoldDisplayValue
) external onlyOwner {
daoSetSeason(season_);
daoSetFirstGoldPerTokenId(FirstGoldDisplayValue);
}
} | claimAllForOwner | function claimAllForOwner() external {
uint256 tokenBalanceOwner = firstContract.balanceOf(_msgSender());
// Checks
require(tokenBalanceOwner > 0, "NO_TOKENS_OWNED");
// i < tokenBalanceOwner because tokenBalanceOwner is 1-indexed
for (uint256 i = 0; i < tokenBalanceOwner; i++) {
// Further Checks, Effects, and Interactions are contained within
// the _claim() function
_claim(
firstContract.tokenOfOwnerByIndex(_msgSender(), i),
_msgSender()
);
}
}
| /// @notice Claim First Gold for all tokens owned by the sender
/// @notice This function will run out of gas if you have too much first! If
/// this is a concern, you should use claimRangeForOwner and claim First
/// Gold in batches. | NatSpecSingleLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
2737,
3342
]
} | 59,402 |
||
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | FirstGold | contract FirstGold is Context, Ownable, ERC20 {
// first contract is available at https://etherscan.io/address/0xff9c1b15b16263c61d017ee9f65c50e4ae0113d7
address public firstContractAddress =
0xc9Cb0FEe73f060Db66D2693D92d75c825B1afdbF;
IERC721Enumerable public firstContract;
// Give out 10,000 First Gold for every first Bag that a user holds
uint256 public FirstGoldPerTokenId = 10000 * (10**decimals());
// tokenIdStart of 1 is First on the following lines in the first contract:
/**
function claim(uint256 tokenId) public nonReentrant {
require(tokenId > 0 && tokenId < 7778, "Token ID invalid");
_safeMint(_msgSender(), tokenId);
}
*/
uint256 public tokenIdStart = 1;
// tokenIdEnd of 8000 is First on the following lines in the first contract:
/**
function ownerClaim(uint256 tokenId) public nonReentrant onlyOwner {
require(tokenId > 7777 && tokenId < 8001, "Token ID invalid");
_safeMint(owner(), tokenId);
}
*/
uint256 public tokenIdEnd = 8000;
// Seasons are used to allow users to claim tokens regularly. Seasons are
// decided by the DAO.
uint256 public season = 0;
// Track claimed tokens within a season
// IMPORTANT: The format of the mapping is:
// claimedForSeason[season][tokenId][claimed]
mapping(uint256 => mapping(uint256 => bool)) public seasonClaimedByTokenId;
constructor() Ownable() ERC20("First Gold", "BGLD") {
// Transfer ownership to the first DAO
// Ownable by OpenZeppelin automatically sets owner to msg.sender, but
// we're going to be using a separate wallet for deployment
transferOwnership(_msgSender());
firstContract = IERC721Enumerable(firstContractAddress);
}
/// @notice Claim First Gold for a given first ID
/// @param tokenId The tokenId of the first NFT
function claimById(uint256 tokenId) external {
// Follow the Checks-Effects-Interactions pattern to prevent reentrancy
// attacks
// Checks
// Check that the msgSender owns the token that is being claimed
require(
_msgSender() == firstContract.ownerOf(tokenId),
"MUST_OWN_TOKEN_ID"
);
// Further Checks, Effects, and Interactions are contained within the
// _claim() function
_claim(tokenId, _msgSender());
}
/// @notice Claim First Gold for all tokens owned by the sender
/// @notice This function will run out of gas if you have too much first! If
/// this is a concern, you should use claimRangeForOwner and claim First
/// Gold in batches.
function claimAllForOwner() external {
uint256 tokenBalanceOwner = firstContract.balanceOf(_msgSender());
// Checks
require(tokenBalanceOwner > 0, "NO_TOKENS_OWNED");
// i < tokenBalanceOwner because tokenBalanceOwner is 1-indexed
for (uint256 i = 0; i < tokenBalanceOwner; i++) {
// Further Checks, Effects, and Interactions are contained within
// the _claim() function
_claim(
firstContract.tokenOfOwnerByIndex(_msgSender(), i),
_msgSender()
);
}
}
/// @notice Claim First Gold for all tokens owned by the sender within a
/// given range
/// @notice This function is useful if you own too much first to claim all at
/// once or if you want to leave some first unclaimed. If you leave first
/// unclaimed, however, you cannot claim it once the next season starts.
function claimRangeForOwner(uint256 ownerIndexStart, uint256 ownerIndexEnd)
external
{
uint256 tokenBalanceOwner = firstContract.balanceOf(_msgSender());
// Checks
require(tokenBalanceOwner > 0, "NO_TOKENS_OWNED");
// We use < for ownerIndexEnd and tokenBalanceOwner because
// tokenOfOwnerByIndex is 0-indexed while the token balance is 1-indexed
require(
ownerIndexStart >= 0 && ownerIndexEnd < tokenBalanceOwner,
"INDEX_OUT_OF_RANGE"
);
// i <= ownerIndexEnd because ownerIndexEnd is 0-indexed
for (uint256 i = ownerIndexStart; i <= ownerIndexEnd; i++) {
// Further Checks, Effects, and Interactions are contained within
// the _claim() function
_claim(
firstContract.tokenOfOwnerByIndex(_msgSender(), i),
_msgSender()
);
}
}
/// @dev Internal function to mint first upon claiming
function _claim(uint256 tokenId, address tokenOwner) internal {
// Checks
// Check that the token ID is in range
// We use >= and <= to here because all of the token IDs are 0-indexed
require(
tokenId >= tokenIdStart && tokenId <= tokenIdEnd,
"TOKEN_ID_OUT_OF_RANGE"
);
// Check that First Gold have not already been claimed this season
// for a given tokenId
require(
!seasonClaimedByTokenId[season][tokenId],
"GOLD_CLAIMED_FOR_TOKEN_ID"
);
// Effects
// Mark that First Gold has been claimed for this season for the
// given tokenId
seasonClaimedByTokenId[season][tokenId] = true;
// Interactions
// Send First Gold to the owner of the token ID
_mint(tokenOwner, FirstGoldPerTokenId);
}
/// @notice Allows the DAO to mint new tokens for use within the first
/// Ecosystem
/// @param amountDisplayValue The amount of first to mint. This should be
/// input as the display value, not in raw decimals. If you want to mint
/// 100 first, you should enter "100" rather than the value of 100 * 10^18.
function daoMint(uint256 amountDisplayValue) external onlyOwner {
_mint(owner(), amountDisplayValue * (10**decimals()));
}
/// @notice Allows the DAO to set a new contract address for first. This is
/// relevant in the event that first migrates to a new contract.
/// @param firstContractAddress_ The new contract address for first
function daoSetfirstContractAddress(address firstContractAddress_)
external
onlyOwner
{
firstContractAddress = firstContractAddress_;
firstContract = IERC721Enumerable(firstContractAddress);
}
/// @notice Allows the DAO to set the token IDs that are eligible to claim
/// first
/// @param tokenIdStart_ The start of the eligible token range
/// @param tokenIdEnd_ The end of the eligible token range
/// @dev This is relevant in case a future first contract has a different
/// total supply of first
function daoSetTokenIdRange(uint256 tokenIdStart_, uint256 tokenIdEnd_)
external
onlyOwner
{
tokenIdStart = tokenIdStart_;
tokenIdEnd = tokenIdEnd_;
}
/// @notice Allows the DAO to set a season for new First Gold claims
/// @param season_ The season to use for claiming first
function daoSetSeason(uint256 season_) public onlyOwner {
season = season_;
}
/// @notice Allows the DAO to set the amount of First Gold that is
/// claimed per token ID
/// @param FirstGoldDisplayValue The amount of first a user can claim.
/// This should be input as the display value, not in raw decimals. If you
/// want to mint 100 first, you should enter "100" rather than the value of
/// 100 * 10^18.
function daoSetFirstGoldPerTokenId(uint256 FirstGoldDisplayValue)
public
onlyOwner
{
FirstGoldPerTokenId = FirstGoldDisplayValue * (10**decimals());
}
/// @notice Allows the DAO to set the season and First Gold per token ID
/// in one transaction. This ensures that there is not a gap where a user
/// can claim more First Gold than others
/// @param season_ The season to use for claiming first
/// @param FirstGoldDisplayValue The amount of first a user can claim.
/// This should be input as the display value, not in raw decimals. If you
/// want to mint 100 first, you should enter "100" rather than the value of
/// 100 * 10^18.
/// @dev We would save a tiny amount of gas by modifying the season and
/// FirstGold variables directly. It is better practice for security,
/// however, to avoid repeating code. This function is so rarely used that
/// it's not worth moving these values into their own internal function to
/// skip the gas used on the modifier check.
function daoSetSeasonAndFirstGoldPerTokenID(
uint256 season_,
uint256 FirstGoldDisplayValue
) external onlyOwner {
daoSetSeason(season_);
daoSetFirstGoldPerTokenId(FirstGoldDisplayValue);
}
} | claimRangeForOwner | function claimRangeForOwner(uint256 ownerIndexStart, uint256 ownerIndexEnd)
external
{
uint256 tokenBalanceOwner = firstContract.balanceOf(_msgSender());
// Checks
require(tokenBalanceOwner > 0, "NO_TOKENS_OWNED");
// We use < for ownerIndexEnd and tokenBalanceOwner because
// tokenOfOwnerByIndex is 0-indexed while the token balance is 1-indexed
require(
ownerIndexStart >= 0 && ownerIndexEnd < tokenBalanceOwner,
"INDEX_OUT_OF_RANGE"
);
// i <= ownerIndexEnd because ownerIndexEnd is 0-indexed
for (uint256 i = ownerIndexStart; i <= ownerIndexEnd; i++) {
// Further Checks, Effects, and Interactions are contained within
// the _claim() function
_claim(
firstContract.tokenOfOwnerByIndex(_msgSender(), i),
_msgSender()
);
}
}
| /// @notice Claim First Gold for all tokens owned by the sender within a
/// given range
/// @notice This function is useful if you own too much first to claim all at
/// once or if you want to leave some first unclaimed. If you leave first
/// unclaimed, however, you cannot claim it once the next season starts. | NatSpecSingleLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
3684,
4644
]
} | 59,403 |
||
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | FirstGold | contract FirstGold is Context, Ownable, ERC20 {
// first contract is available at https://etherscan.io/address/0xff9c1b15b16263c61d017ee9f65c50e4ae0113d7
address public firstContractAddress =
0xc9Cb0FEe73f060Db66D2693D92d75c825B1afdbF;
IERC721Enumerable public firstContract;
// Give out 10,000 First Gold for every first Bag that a user holds
uint256 public FirstGoldPerTokenId = 10000 * (10**decimals());
// tokenIdStart of 1 is First on the following lines in the first contract:
/**
function claim(uint256 tokenId) public nonReentrant {
require(tokenId > 0 && tokenId < 7778, "Token ID invalid");
_safeMint(_msgSender(), tokenId);
}
*/
uint256 public tokenIdStart = 1;
// tokenIdEnd of 8000 is First on the following lines in the first contract:
/**
function ownerClaim(uint256 tokenId) public nonReentrant onlyOwner {
require(tokenId > 7777 && tokenId < 8001, "Token ID invalid");
_safeMint(owner(), tokenId);
}
*/
uint256 public tokenIdEnd = 8000;
// Seasons are used to allow users to claim tokens regularly. Seasons are
// decided by the DAO.
uint256 public season = 0;
// Track claimed tokens within a season
// IMPORTANT: The format of the mapping is:
// claimedForSeason[season][tokenId][claimed]
mapping(uint256 => mapping(uint256 => bool)) public seasonClaimedByTokenId;
constructor() Ownable() ERC20("First Gold", "BGLD") {
// Transfer ownership to the first DAO
// Ownable by OpenZeppelin automatically sets owner to msg.sender, but
// we're going to be using a separate wallet for deployment
transferOwnership(_msgSender());
firstContract = IERC721Enumerable(firstContractAddress);
}
/// @notice Claim First Gold for a given first ID
/// @param tokenId The tokenId of the first NFT
function claimById(uint256 tokenId) external {
// Follow the Checks-Effects-Interactions pattern to prevent reentrancy
// attacks
// Checks
// Check that the msgSender owns the token that is being claimed
require(
_msgSender() == firstContract.ownerOf(tokenId),
"MUST_OWN_TOKEN_ID"
);
// Further Checks, Effects, and Interactions are contained within the
// _claim() function
_claim(tokenId, _msgSender());
}
/// @notice Claim First Gold for all tokens owned by the sender
/// @notice This function will run out of gas if you have too much first! If
/// this is a concern, you should use claimRangeForOwner and claim First
/// Gold in batches.
function claimAllForOwner() external {
uint256 tokenBalanceOwner = firstContract.balanceOf(_msgSender());
// Checks
require(tokenBalanceOwner > 0, "NO_TOKENS_OWNED");
// i < tokenBalanceOwner because tokenBalanceOwner is 1-indexed
for (uint256 i = 0; i < tokenBalanceOwner; i++) {
// Further Checks, Effects, and Interactions are contained within
// the _claim() function
_claim(
firstContract.tokenOfOwnerByIndex(_msgSender(), i),
_msgSender()
);
}
}
/// @notice Claim First Gold for all tokens owned by the sender within a
/// given range
/// @notice This function is useful if you own too much first to claim all at
/// once or if you want to leave some first unclaimed. If you leave first
/// unclaimed, however, you cannot claim it once the next season starts.
function claimRangeForOwner(uint256 ownerIndexStart, uint256 ownerIndexEnd)
external
{
uint256 tokenBalanceOwner = firstContract.balanceOf(_msgSender());
// Checks
require(tokenBalanceOwner > 0, "NO_TOKENS_OWNED");
// We use < for ownerIndexEnd and tokenBalanceOwner because
// tokenOfOwnerByIndex is 0-indexed while the token balance is 1-indexed
require(
ownerIndexStart >= 0 && ownerIndexEnd < tokenBalanceOwner,
"INDEX_OUT_OF_RANGE"
);
// i <= ownerIndexEnd because ownerIndexEnd is 0-indexed
for (uint256 i = ownerIndexStart; i <= ownerIndexEnd; i++) {
// Further Checks, Effects, and Interactions are contained within
// the _claim() function
_claim(
firstContract.tokenOfOwnerByIndex(_msgSender(), i),
_msgSender()
);
}
}
/// @dev Internal function to mint first upon claiming
function _claim(uint256 tokenId, address tokenOwner) internal {
// Checks
// Check that the token ID is in range
// We use >= and <= to here because all of the token IDs are 0-indexed
require(
tokenId >= tokenIdStart && tokenId <= tokenIdEnd,
"TOKEN_ID_OUT_OF_RANGE"
);
// Check that First Gold have not already been claimed this season
// for a given tokenId
require(
!seasonClaimedByTokenId[season][tokenId],
"GOLD_CLAIMED_FOR_TOKEN_ID"
);
// Effects
// Mark that First Gold has been claimed for this season for the
// given tokenId
seasonClaimedByTokenId[season][tokenId] = true;
// Interactions
// Send First Gold to the owner of the token ID
_mint(tokenOwner, FirstGoldPerTokenId);
}
/// @notice Allows the DAO to mint new tokens for use within the first
/// Ecosystem
/// @param amountDisplayValue The amount of first to mint. This should be
/// input as the display value, not in raw decimals. If you want to mint
/// 100 first, you should enter "100" rather than the value of 100 * 10^18.
function daoMint(uint256 amountDisplayValue) external onlyOwner {
_mint(owner(), amountDisplayValue * (10**decimals()));
}
/// @notice Allows the DAO to set a new contract address for first. This is
/// relevant in the event that first migrates to a new contract.
/// @param firstContractAddress_ The new contract address for first
function daoSetfirstContractAddress(address firstContractAddress_)
external
onlyOwner
{
firstContractAddress = firstContractAddress_;
firstContract = IERC721Enumerable(firstContractAddress);
}
/// @notice Allows the DAO to set the token IDs that are eligible to claim
/// first
/// @param tokenIdStart_ The start of the eligible token range
/// @param tokenIdEnd_ The end of the eligible token range
/// @dev This is relevant in case a future first contract has a different
/// total supply of first
function daoSetTokenIdRange(uint256 tokenIdStart_, uint256 tokenIdEnd_)
external
onlyOwner
{
tokenIdStart = tokenIdStart_;
tokenIdEnd = tokenIdEnd_;
}
/// @notice Allows the DAO to set a season for new First Gold claims
/// @param season_ The season to use for claiming first
function daoSetSeason(uint256 season_) public onlyOwner {
season = season_;
}
/// @notice Allows the DAO to set the amount of First Gold that is
/// claimed per token ID
/// @param FirstGoldDisplayValue The amount of first a user can claim.
/// This should be input as the display value, not in raw decimals. If you
/// want to mint 100 first, you should enter "100" rather than the value of
/// 100 * 10^18.
function daoSetFirstGoldPerTokenId(uint256 FirstGoldDisplayValue)
public
onlyOwner
{
FirstGoldPerTokenId = FirstGoldDisplayValue * (10**decimals());
}
/// @notice Allows the DAO to set the season and First Gold per token ID
/// in one transaction. This ensures that there is not a gap where a user
/// can claim more First Gold than others
/// @param season_ The season to use for claiming first
/// @param FirstGoldDisplayValue The amount of first a user can claim.
/// This should be input as the display value, not in raw decimals. If you
/// want to mint 100 first, you should enter "100" rather than the value of
/// 100 * 10^18.
/// @dev We would save a tiny amount of gas by modifying the season and
/// FirstGold variables directly. It is better practice for security,
/// however, to avoid repeating code. This function is so rarely used that
/// it's not worth moving these values into their own internal function to
/// skip the gas used on the modifier check.
function daoSetSeasonAndFirstGoldPerTokenID(
uint256 season_,
uint256 FirstGoldDisplayValue
) external onlyOwner {
daoSetSeason(season_);
daoSetFirstGoldPerTokenId(FirstGoldDisplayValue);
}
} | _claim | function _claim(uint256 tokenId, address tokenOwner) internal {
// Checks
// Check that the token ID is in range
// We use >= and <= to here because all of the token IDs are 0-indexed
require(
tokenId >= tokenIdStart && tokenId <= tokenIdEnd,
"TOKEN_ID_OUT_OF_RANGE"
);
// Check that First Gold have not already been claimed this season
// for a given tokenId
require(
!seasonClaimedByTokenId[season][tokenId],
"GOLD_CLAIMED_FOR_TOKEN_ID"
);
// Effects
// Mark that First Gold has been claimed for this season for the
// given tokenId
seasonClaimedByTokenId[season][tokenId] = true;
// Interactions
// Send First Gold to the owner of the token ID
_mint(tokenOwner, FirstGoldPerTokenId);
}
| /// @dev Internal function to mint first upon claiming | NatSpecSingleLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
4707,
5611
]
} | 59,404 |
||
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | FirstGold | contract FirstGold is Context, Ownable, ERC20 {
// first contract is available at https://etherscan.io/address/0xff9c1b15b16263c61d017ee9f65c50e4ae0113d7
address public firstContractAddress =
0xc9Cb0FEe73f060Db66D2693D92d75c825B1afdbF;
IERC721Enumerable public firstContract;
// Give out 10,000 First Gold for every first Bag that a user holds
uint256 public FirstGoldPerTokenId = 10000 * (10**decimals());
// tokenIdStart of 1 is First on the following lines in the first contract:
/**
function claim(uint256 tokenId) public nonReentrant {
require(tokenId > 0 && tokenId < 7778, "Token ID invalid");
_safeMint(_msgSender(), tokenId);
}
*/
uint256 public tokenIdStart = 1;
// tokenIdEnd of 8000 is First on the following lines in the first contract:
/**
function ownerClaim(uint256 tokenId) public nonReentrant onlyOwner {
require(tokenId > 7777 && tokenId < 8001, "Token ID invalid");
_safeMint(owner(), tokenId);
}
*/
uint256 public tokenIdEnd = 8000;
// Seasons are used to allow users to claim tokens regularly. Seasons are
// decided by the DAO.
uint256 public season = 0;
// Track claimed tokens within a season
// IMPORTANT: The format of the mapping is:
// claimedForSeason[season][tokenId][claimed]
mapping(uint256 => mapping(uint256 => bool)) public seasonClaimedByTokenId;
constructor() Ownable() ERC20("First Gold", "BGLD") {
// Transfer ownership to the first DAO
// Ownable by OpenZeppelin automatically sets owner to msg.sender, but
// we're going to be using a separate wallet for deployment
transferOwnership(_msgSender());
firstContract = IERC721Enumerable(firstContractAddress);
}
/// @notice Claim First Gold for a given first ID
/// @param tokenId The tokenId of the first NFT
function claimById(uint256 tokenId) external {
// Follow the Checks-Effects-Interactions pattern to prevent reentrancy
// attacks
// Checks
// Check that the msgSender owns the token that is being claimed
require(
_msgSender() == firstContract.ownerOf(tokenId),
"MUST_OWN_TOKEN_ID"
);
// Further Checks, Effects, and Interactions are contained within the
// _claim() function
_claim(tokenId, _msgSender());
}
/// @notice Claim First Gold for all tokens owned by the sender
/// @notice This function will run out of gas if you have too much first! If
/// this is a concern, you should use claimRangeForOwner and claim First
/// Gold in batches.
function claimAllForOwner() external {
uint256 tokenBalanceOwner = firstContract.balanceOf(_msgSender());
// Checks
require(tokenBalanceOwner > 0, "NO_TOKENS_OWNED");
// i < tokenBalanceOwner because tokenBalanceOwner is 1-indexed
for (uint256 i = 0; i < tokenBalanceOwner; i++) {
// Further Checks, Effects, and Interactions are contained within
// the _claim() function
_claim(
firstContract.tokenOfOwnerByIndex(_msgSender(), i),
_msgSender()
);
}
}
/// @notice Claim First Gold for all tokens owned by the sender within a
/// given range
/// @notice This function is useful if you own too much first to claim all at
/// once or if you want to leave some first unclaimed. If you leave first
/// unclaimed, however, you cannot claim it once the next season starts.
function claimRangeForOwner(uint256 ownerIndexStart, uint256 ownerIndexEnd)
external
{
uint256 tokenBalanceOwner = firstContract.balanceOf(_msgSender());
// Checks
require(tokenBalanceOwner > 0, "NO_TOKENS_OWNED");
// We use < for ownerIndexEnd and tokenBalanceOwner because
// tokenOfOwnerByIndex is 0-indexed while the token balance is 1-indexed
require(
ownerIndexStart >= 0 && ownerIndexEnd < tokenBalanceOwner,
"INDEX_OUT_OF_RANGE"
);
// i <= ownerIndexEnd because ownerIndexEnd is 0-indexed
for (uint256 i = ownerIndexStart; i <= ownerIndexEnd; i++) {
// Further Checks, Effects, and Interactions are contained within
// the _claim() function
_claim(
firstContract.tokenOfOwnerByIndex(_msgSender(), i),
_msgSender()
);
}
}
/// @dev Internal function to mint first upon claiming
function _claim(uint256 tokenId, address tokenOwner) internal {
// Checks
// Check that the token ID is in range
// We use >= and <= to here because all of the token IDs are 0-indexed
require(
tokenId >= tokenIdStart && tokenId <= tokenIdEnd,
"TOKEN_ID_OUT_OF_RANGE"
);
// Check that First Gold have not already been claimed this season
// for a given tokenId
require(
!seasonClaimedByTokenId[season][tokenId],
"GOLD_CLAIMED_FOR_TOKEN_ID"
);
// Effects
// Mark that First Gold has been claimed for this season for the
// given tokenId
seasonClaimedByTokenId[season][tokenId] = true;
// Interactions
// Send First Gold to the owner of the token ID
_mint(tokenOwner, FirstGoldPerTokenId);
}
/// @notice Allows the DAO to mint new tokens for use within the first
/// Ecosystem
/// @param amountDisplayValue The amount of first to mint. This should be
/// input as the display value, not in raw decimals. If you want to mint
/// 100 first, you should enter "100" rather than the value of 100 * 10^18.
function daoMint(uint256 amountDisplayValue) external onlyOwner {
_mint(owner(), amountDisplayValue * (10**decimals()));
}
/// @notice Allows the DAO to set a new contract address for first. This is
/// relevant in the event that first migrates to a new contract.
/// @param firstContractAddress_ The new contract address for first
function daoSetfirstContractAddress(address firstContractAddress_)
external
onlyOwner
{
firstContractAddress = firstContractAddress_;
firstContract = IERC721Enumerable(firstContractAddress);
}
/// @notice Allows the DAO to set the token IDs that are eligible to claim
/// first
/// @param tokenIdStart_ The start of the eligible token range
/// @param tokenIdEnd_ The end of the eligible token range
/// @dev This is relevant in case a future first contract has a different
/// total supply of first
function daoSetTokenIdRange(uint256 tokenIdStart_, uint256 tokenIdEnd_)
external
onlyOwner
{
tokenIdStart = tokenIdStart_;
tokenIdEnd = tokenIdEnd_;
}
/// @notice Allows the DAO to set a season for new First Gold claims
/// @param season_ The season to use for claiming first
function daoSetSeason(uint256 season_) public onlyOwner {
season = season_;
}
/// @notice Allows the DAO to set the amount of First Gold that is
/// claimed per token ID
/// @param FirstGoldDisplayValue The amount of first a user can claim.
/// This should be input as the display value, not in raw decimals. If you
/// want to mint 100 first, you should enter "100" rather than the value of
/// 100 * 10^18.
function daoSetFirstGoldPerTokenId(uint256 FirstGoldDisplayValue)
public
onlyOwner
{
FirstGoldPerTokenId = FirstGoldDisplayValue * (10**decimals());
}
/// @notice Allows the DAO to set the season and First Gold per token ID
/// in one transaction. This ensures that there is not a gap where a user
/// can claim more First Gold than others
/// @param season_ The season to use for claiming first
/// @param FirstGoldDisplayValue The amount of first a user can claim.
/// This should be input as the display value, not in raw decimals. If you
/// want to mint 100 first, you should enter "100" rather than the value of
/// 100 * 10^18.
/// @dev We would save a tiny amount of gas by modifying the season and
/// FirstGold variables directly. It is better practice for security,
/// however, to avoid repeating code. This function is so rarely used that
/// it's not worth moving these values into their own internal function to
/// skip the gas used on the modifier check.
function daoSetSeasonAndFirstGoldPerTokenID(
uint256 season_,
uint256 FirstGoldDisplayValue
) external onlyOwner {
daoSetSeason(season_);
daoSetFirstGoldPerTokenId(FirstGoldDisplayValue);
}
} | daoMint | function daoMint(uint256 amountDisplayValue) external onlyOwner {
_mint(owner(), amountDisplayValue * (10**decimals()));
}
| /// @notice Allows the DAO to mint new tokens for use within the first
/// Ecosystem
/// @param amountDisplayValue The amount of first to mint. This should be
/// input as the display value, not in raw decimals. If you want to mint
/// 100 first, you should enter "100" rather than the value of 100 * 10^18. | NatSpecSingleLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
5947,
6088
]
} | 59,405 |
||
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | FirstGold | contract FirstGold is Context, Ownable, ERC20 {
// first contract is available at https://etherscan.io/address/0xff9c1b15b16263c61d017ee9f65c50e4ae0113d7
address public firstContractAddress =
0xc9Cb0FEe73f060Db66D2693D92d75c825B1afdbF;
IERC721Enumerable public firstContract;
// Give out 10,000 First Gold for every first Bag that a user holds
uint256 public FirstGoldPerTokenId = 10000 * (10**decimals());
// tokenIdStart of 1 is First on the following lines in the first contract:
/**
function claim(uint256 tokenId) public nonReentrant {
require(tokenId > 0 && tokenId < 7778, "Token ID invalid");
_safeMint(_msgSender(), tokenId);
}
*/
uint256 public tokenIdStart = 1;
// tokenIdEnd of 8000 is First on the following lines in the first contract:
/**
function ownerClaim(uint256 tokenId) public nonReentrant onlyOwner {
require(tokenId > 7777 && tokenId < 8001, "Token ID invalid");
_safeMint(owner(), tokenId);
}
*/
uint256 public tokenIdEnd = 8000;
// Seasons are used to allow users to claim tokens regularly. Seasons are
// decided by the DAO.
uint256 public season = 0;
// Track claimed tokens within a season
// IMPORTANT: The format of the mapping is:
// claimedForSeason[season][tokenId][claimed]
mapping(uint256 => mapping(uint256 => bool)) public seasonClaimedByTokenId;
constructor() Ownable() ERC20("First Gold", "BGLD") {
// Transfer ownership to the first DAO
// Ownable by OpenZeppelin automatically sets owner to msg.sender, but
// we're going to be using a separate wallet for deployment
transferOwnership(_msgSender());
firstContract = IERC721Enumerable(firstContractAddress);
}
/// @notice Claim First Gold for a given first ID
/// @param tokenId The tokenId of the first NFT
function claimById(uint256 tokenId) external {
// Follow the Checks-Effects-Interactions pattern to prevent reentrancy
// attacks
// Checks
// Check that the msgSender owns the token that is being claimed
require(
_msgSender() == firstContract.ownerOf(tokenId),
"MUST_OWN_TOKEN_ID"
);
// Further Checks, Effects, and Interactions are contained within the
// _claim() function
_claim(tokenId, _msgSender());
}
/// @notice Claim First Gold for all tokens owned by the sender
/// @notice This function will run out of gas if you have too much first! If
/// this is a concern, you should use claimRangeForOwner and claim First
/// Gold in batches.
function claimAllForOwner() external {
uint256 tokenBalanceOwner = firstContract.balanceOf(_msgSender());
// Checks
require(tokenBalanceOwner > 0, "NO_TOKENS_OWNED");
// i < tokenBalanceOwner because tokenBalanceOwner is 1-indexed
for (uint256 i = 0; i < tokenBalanceOwner; i++) {
// Further Checks, Effects, and Interactions are contained within
// the _claim() function
_claim(
firstContract.tokenOfOwnerByIndex(_msgSender(), i),
_msgSender()
);
}
}
/// @notice Claim First Gold for all tokens owned by the sender within a
/// given range
/// @notice This function is useful if you own too much first to claim all at
/// once or if you want to leave some first unclaimed. If you leave first
/// unclaimed, however, you cannot claim it once the next season starts.
function claimRangeForOwner(uint256 ownerIndexStart, uint256 ownerIndexEnd)
external
{
uint256 tokenBalanceOwner = firstContract.balanceOf(_msgSender());
// Checks
require(tokenBalanceOwner > 0, "NO_TOKENS_OWNED");
// We use < for ownerIndexEnd and tokenBalanceOwner because
// tokenOfOwnerByIndex is 0-indexed while the token balance is 1-indexed
require(
ownerIndexStart >= 0 && ownerIndexEnd < tokenBalanceOwner,
"INDEX_OUT_OF_RANGE"
);
// i <= ownerIndexEnd because ownerIndexEnd is 0-indexed
for (uint256 i = ownerIndexStart; i <= ownerIndexEnd; i++) {
// Further Checks, Effects, and Interactions are contained within
// the _claim() function
_claim(
firstContract.tokenOfOwnerByIndex(_msgSender(), i),
_msgSender()
);
}
}
/// @dev Internal function to mint first upon claiming
function _claim(uint256 tokenId, address tokenOwner) internal {
// Checks
// Check that the token ID is in range
// We use >= and <= to here because all of the token IDs are 0-indexed
require(
tokenId >= tokenIdStart && tokenId <= tokenIdEnd,
"TOKEN_ID_OUT_OF_RANGE"
);
// Check that First Gold have not already been claimed this season
// for a given tokenId
require(
!seasonClaimedByTokenId[season][tokenId],
"GOLD_CLAIMED_FOR_TOKEN_ID"
);
// Effects
// Mark that First Gold has been claimed for this season for the
// given tokenId
seasonClaimedByTokenId[season][tokenId] = true;
// Interactions
// Send First Gold to the owner of the token ID
_mint(tokenOwner, FirstGoldPerTokenId);
}
/// @notice Allows the DAO to mint new tokens for use within the first
/// Ecosystem
/// @param amountDisplayValue The amount of first to mint. This should be
/// input as the display value, not in raw decimals. If you want to mint
/// 100 first, you should enter "100" rather than the value of 100 * 10^18.
function daoMint(uint256 amountDisplayValue) external onlyOwner {
_mint(owner(), amountDisplayValue * (10**decimals()));
}
/// @notice Allows the DAO to set a new contract address for first. This is
/// relevant in the event that first migrates to a new contract.
/// @param firstContractAddress_ The new contract address for first
function daoSetfirstContractAddress(address firstContractAddress_)
external
onlyOwner
{
firstContractAddress = firstContractAddress_;
firstContract = IERC721Enumerable(firstContractAddress);
}
/// @notice Allows the DAO to set the token IDs that are eligible to claim
/// first
/// @param tokenIdStart_ The start of the eligible token range
/// @param tokenIdEnd_ The end of the eligible token range
/// @dev This is relevant in case a future first contract has a different
/// total supply of first
function daoSetTokenIdRange(uint256 tokenIdStart_, uint256 tokenIdEnd_)
external
onlyOwner
{
tokenIdStart = tokenIdStart_;
tokenIdEnd = tokenIdEnd_;
}
/// @notice Allows the DAO to set a season for new First Gold claims
/// @param season_ The season to use for claiming first
function daoSetSeason(uint256 season_) public onlyOwner {
season = season_;
}
/// @notice Allows the DAO to set the amount of First Gold that is
/// claimed per token ID
/// @param FirstGoldDisplayValue The amount of first a user can claim.
/// This should be input as the display value, not in raw decimals. If you
/// want to mint 100 first, you should enter "100" rather than the value of
/// 100 * 10^18.
function daoSetFirstGoldPerTokenId(uint256 FirstGoldDisplayValue)
public
onlyOwner
{
FirstGoldPerTokenId = FirstGoldDisplayValue * (10**decimals());
}
/// @notice Allows the DAO to set the season and First Gold per token ID
/// in one transaction. This ensures that there is not a gap where a user
/// can claim more First Gold than others
/// @param season_ The season to use for claiming first
/// @param FirstGoldDisplayValue The amount of first a user can claim.
/// This should be input as the display value, not in raw decimals. If you
/// want to mint 100 first, you should enter "100" rather than the value of
/// 100 * 10^18.
/// @dev We would save a tiny amount of gas by modifying the season and
/// FirstGold variables directly. It is better practice for security,
/// however, to avoid repeating code. This function is so rarely used that
/// it's not worth moving these values into their own internal function to
/// skip the gas used on the modifier check.
function daoSetSeasonAndFirstGoldPerTokenID(
uint256 season_,
uint256 FirstGoldDisplayValue
) external onlyOwner {
daoSetSeason(season_);
daoSetFirstGoldPerTokenId(FirstGoldDisplayValue);
}
} | daoSetfirstContractAddress | function daoSetfirstContractAddress(address firstContractAddress_)
external
onlyOwner
{
firstContractAddress = firstContractAddress_;
firstContract = IERC721Enumerable(firstContractAddress);
}
| /// @notice Allows the DAO to set a new contract address for first. This is
/// relevant in the event that first migrates to a new contract.
/// @param firstContractAddress_ The new contract address for first | NatSpecSingleLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
6315,
6558
]
} | 59,406 |
||
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | FirstGold | contract FirstGold is Context, Ownable, ERC20 {
// first contract is available at https://etherscan.io/address/0xff9c1b15b16263c61d017ee9f65c50e4ae0113d7
address public firstContractAddress =
0xc9Cb0FEe73f060Db66D2693D92d75c825B1afdbF;
IERC721Enumerable public firstContract;
// Give out 10,000 First Gold for every first Bag that a user holds
uint256 public FirstGoldPerTokenId = 10000 * (10**decimals());
// tokenIdStart of 1 is First on the following lines in the first contract:
/**
function claim(uint256 tokenId) public nonReentrant {
require(tokenId > 0 && tokenId < 7778, "Token ID invalid");
_safeMint(_msgSender(), tokenId);
}
*/
uint256 public tokenIdStart = 1;
// tokenIdEnd of 8000 is First on the following lines in the first contract:
/**
function ownerClaim(uint256 tokenId) public nonReentrant onlyOwner {
require(tokenId > 7777 && tokenId < 8001, "Token ID invalid");
_safeMint(owner(), tokenId);
}
*/
uint256 public tokenIdEnd = 8000;
// Seasons are used to allow users to claim tokens regularly. Seasons are
// decided by the DAO.
uint256 public season = 0;
// Track claimed tokens within a season
// IMPORTANT: The format of the mapping is:
// claimedForSeason[season][tokenId][claimed]
mapping(uint256 => mapping(uint256 => bool)) public seasonClaimedByTokenId;
constructor() Ownable() ERC20("First Gold", "BGLD") {
// Transfer ownership to the first DAO
// Ownable by OpenZeppelin automatically sets owner to msg.sender, but
// we're going to be using a separate wallet for deployment
transferOwnership(_msgSender());
firstContract = IERC721Enumerable(firstContractAddress);
}
/// @notice Claim First Gold for a given first ID
/// @param tokenId The tokenId of the first NFT
function claimById(uint256 tokenId) external {
// Follow the Checks-Effects-Interactions pattern to prevent reentrancy
// attacks
// Checks
// Check that the msgSender owns the token that is being claimed
require(
_msgSender() == firstContract.ownerOf(tokenId),
"MUST_OWN_TOKEN_ID"
);
// Further Checks, Effects, and Interactions are contained within the
// _claim() function
_claim(tokenId, _msgSender());
}
/// @notice Claim First Gold for all tokens owned by the sender
/// @notice This function will run out of gas if you have too much first! If
/// this is a concern, you should use claimRangeForOwner and claim First
/// Gold in batches.
function claimAllForOwner() external {
uint256 tokenBalanceOwner = firstContract.balanceOf(_msgSender());
// Checks
require(tokenBalanceOwner > 0, "NO_TOKENS_OWNED");
// i < tokenBalanceOwner because tokenBalanceOwner is 1-indexed
for (uint256 i = 0; i < tokenBalanceOwner; i++) {
// Further Checks, Effects, and Interactions are contained within
// the _claim() function
_claim(
firstContract.tokenOfOwnerByIndex(_msgSender(), i),
_msgSender()
);
}
}
/// @notice Claim First Gold for all tokens owned by the sender within a
/// given range
/// @notice This function is useful if you own too much first to claim all at
/// once or if you want to leave some first unclaimed. If you leave first
/// unclaimed, however, you cannot claim it once the next season starts.
function claimRangeForOwner(uint256 ownerIndexStart, uint256 ownerIndexEnd)
external
{
uint256 tokenBalanceOwner = firstContract.balanceOf(_msgSender());
// Checks
require(tokenBalanceOwner > 0, "NO_TOKENS_OWNED");
// We use < for ownerIndexEnd and tokenBalanceOwner because
// tokenOfOwnerByIndex is 0-indexed while the token balance is 1-indexed
require(
ownerIndexStart >= 0 && ownerIndexEnd < tokenBalanceOwner,
"INDEX_OUT_OF_RANGE"
);
// i <= ownerIndexEnd because ownerIndexEnd is 0-indexed
for (uint256 i = ownerIndexStart; i <= ownerIndexEnd; i++) {
// Further Checks, Effects, and Interactions are contained within
// the _claim() function
_claim(
firstContract.tokenOfOwnerByIndex(_msgSender(), i),
_msgSender()
);
}
}
/// @dev Internal function to mint first upon claiming
function _claim(uint256 tokenId, address tokenOwner) internal {
// Checks
// Check that the token ID is in range
// We use >= and <= to here because all of the token IDs are 0-indexed
require(
tokenId >= tokenIdStart && tokenId <= tokenIdEnd,
"TOKEN_ID_OUT_OF_RANGE"
);
// Check that First Gold have not already been claimed this season
// for a given tokenId
require(
!seasonClaimedByTokenId[season][tokenId],
"GOLD_CLAIMED_FOR_TOKEN_ID"
);
// Effects
// Mark that First Gold has been claimed for this season for the
// given tokenId
seasonClaimedByTokenId[season][tokenId] = true;
// Interactions
// Send First Gold to the owner of the token ID
_mint(tokenOwner, FirstGoldPerTokenId);
}
/// @notice Allows the DAO to mint new tokens for use within the first
/// Ecosystem
/// @param amountDisplayValue The amount of first to mint. This should be
/// input as the display value, not in raw decimals. If you want to mint
/// 100 first, you should enter "100" rather than the value of 100 * 10^18.
function daoMint(uint256 amountDisplayValue) external onlyOwner {
_mint(owner(), amountDisplayValue * (10**decimals()));
}
/// @notice Allows the DAO to set a new contract address for first. This is
/// relevant in the event that first migrates to a new contract.
/// @param firstContractAddress_ The new contract address for first
function daoSetfirstContractAddress(address firstContractAddress_)
external
onlyOwner
{
firstContractAddress = firstContractAddress_;
firstContract = IERC721Enumerable(firstContractAddress);
}
/// @notice Allows the DAO to set the token IDs that are eligible to claim
/// first
/// @param tokenIdStart_ The start of the eligible token range
/// @param tokenIdEnd_ The end of the eligible token range
/// @dev This is relevant in case a future first contract has a different
/// total supply of first
function daoSetTokenIdRange(uint256 tokenIdStart_, uint256 tokenIdEnd_)
external
onlyOwner
{
tokenIdStart = tokenIdStart_;
tokenIdEnd = tokenIdEnd_;
}
/// @notice Allows the DAO to set a season for new First Gold claims
/// @param season_ The season to use for claiming first
function daoSetSeason(uint256 season_) public onlyOwner {
season = season_;
}
/// @notice Allows the DAO to set the amount of First Gold that is
/// claimed per token ID
/// @param FirstGoldDisplayValue The amount of first a user can claim.
/// This should be input as the display value, not in raw decimals. If you
/// want to mint 100 first, you should enter "100" rather than the value of
/// 100 * 10^18.
function daoSetFirstGoldPerTokenId(uint256 FirstGoldDisplayValue)
public
onlyOwner
{
FirstGoldPerTokenId = FirstGoldDisplayValue * (10**decimals());
}
/// @notice Allows the DAO to set the season and First Gold per token ID
/// in one transaction. This ensures that there is not a gap where a user
/// can claim more First Gold than others
/// @param season_ The season to use for claiming first
/// @param FirstGoldDisplayValue The amount of first a user can claim.
/// This should be input as the display value, not in raw decimals. If you
/// want to mint 100 first, you should enter "100" rather than the value of
/// 100 * 10^18.
/// @dev We would save a tiny amount of gas by modifying the season and
/// FirstGold variables directly. It is better practice for security,
/// however, to avoid repeating code. This function is so rarely used that
/// it's not worth moving these values into their own internal function to
/// skip the gas used on the modifier check.
function daoSetSeasonAndFirstGoldPerTokenID(
uint256 season_,
uint256 FirstGoldDisplayValue
) external onlyOwner {
daoSetSeason(season_);
daoSetFirstGoldPerTokenId(FirstGoldDisplayValue);
}
} | daoSetTokenIdRange | function daoSetTokenIdRange(uint256 tokenIdStart_, uint256 tokenIdEnd_)
external
onlyOwner
{
tokenIdStart = tokenIdStart_;
tokenIdEnd = tokenIdEnd_;
}
| /// @notice Allows the DAO to set the token IDs that are eligible to claim
/// first
/// @param tokenIdStart_ The start of the eligible token range
/// @param tokenIdEnd_ The end of the eligible token range
/// @dev This is relevant in case a future first contract has a different
/// total supply of first | NatSpecSingleLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
6898,
7099
]
} | 59,407 |
||
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | FirstGold | contract FirstGold is Context, Ownable, ERC20 {
// first contract is available at https://etherscan.io/address/0xff9c1b15b16263c61d017ee9f65c50e4ae0113d7
address public firstContractAddress =
0xc9Cb0FEe73f060Db66D2693D92d75c825B1afdbF;
IERC721Enumerable public firstContract;
// Give out 10,000 First Gold for every first Bag that a user holds
uint256 public FirstGoldPerTokenId = 10000 * (10**decimals());
// tokenIdStart of 1 is First on the following lines in the first contract:
/**
function claim(uint256 tokenId) public nonReentrant {
require(tokenId > 0 && tokenId < 7778, "Token ID invalid");
_safeMint(_msgSender(), tokenId);
}
*/
uint256 public tokenIdStart = 1;
// tokenIdEnd of 8000 is First on the following lines in the first contract:
/**
function ownerClaim(uint256 tokenId) public nonReentrant onlyOwner {
require(tokenId > 7777 && tokenId < 8001, "Token ID invalid");
_safeMint(owner(), tokenId);
}
*/
uint256 public tokenIdEnd = 8000;
// Seasons are used to allow users to claim tokens regularly. Seasons are
// decided by the DAO.
uint256 public season = 0;
// Track claimed tokens within a season
// IMPORTANT: The format of the mapping is:
// claimedForSeason[season][tokenId][claimed]
mapping(uint256 => mapping(uint256 => bool)) public seasonClaimedByTokenId;
constructor() Ownable() ERC20("First Gold", "BGLD") {
// Transfer ownership to the first DAO
// Ownable by OpenZeppelin automatically sets owner to msg.sender, but
// we're going to be using a separate wallet for deployment
transferOwnership(_msgSender());
firstContract = IERC721Enumerable(firstContractAddress);
}
/// @notice Claim First Gold for a given first ID
/// @param tokenId The tokenId of the first NFT
function claimById(uint256 tokenId) external {
// Follow the Checks-Effects-Interactions pattern to prevent reentrancy
// attacks
// Checks
// Check that the msgSender owns the token that is being claimed
require(
_msgSender() == firstContract.ownerOf(tokenId),
"MUST_OWN_TOKEN_ID"
);
// Further Checks, Effects, and Interactions are contained within the
// _claim() function
_claim(tokenId, _msgSender());
}
/// @notice Claim First Gold for all tokens owned by the sender
/// @notice This function will run out of gas if you have too much first! If
/// this is a concern, you should use claimRangeForOwner and claim First
/// Gold in batches.
function claimAllForOwner() external {
uint256 tokenBalanceOwner = firstContract.balanceOf(_msgSender());
// Checks
require(tokenBalanceOwner > 0, "NO_TOKENS_OWNED");
// i < tokenBalanceOwner because tokenBalanceOwner is 1-indexed
for (uint256 i = 0; i < tokenBalanceOwner; i++) {
// Further Checks, Effects, and Interactions are contained within
// the _claim() function
_claim(
firstContract.tokenOfOwnerByIndex(_msgSender(), i),
_msgSender()
);
}
}
/// @notice Claim First Gold for all tokens owned by the sender within a
/// given range
/// @notice This function is useful if you own too much first to claim all at
/// once or if you want to leave some first unclaimed. If you leave first
/// unclaimed, however, you cannot claim it once the next season starts.
function claimRangeForOwner(uint256 ownerIndexStart, uint256 ownerIndexEnd)
external
{
uint256 tokenBalanceOwner = firstContract.balanceOf(_msgSender());
// Checks
require(tokenBalanceOwner > 0, "NO_TOKENS_OWNED");
// We use < for ownerIndexEnd and tokenBalanceOwner because
// tokenOfOwnerByIndex is 0-indexed while the token balance is 1-indexed
require(
ownerIndexStart >= 0 && ownerIndexEnd < tokenBalanceOwner,
"INDEX_OUT_OF_RANGE"
);
// i <= ownerIndexEnd because ownerIndexEnd is 0-indexed
for (uint256 i = ownerIndexStart; i <= ownerIndexEnd; i++) {
// Further Checks, Effects, and Interactions are contained within
// the _claim() function
_claim(
firstContract.tokenOfOwnerByIndex(_msgSender(), i),
_msgSender()
);
}
}
/// @dev Internal function to mint first upon claiming
function _claim(uint256 tokenId, address tokenOwner) internal {
// Checks
// Check that the token ID is in range
// We use >= and <= to here because all of the token IDs are 0-indexed
require(
tokenId >= tokenIdStart && tokenId <= tokenIdEnd,
"TOKEN_ID_OUT_OF_RANGE"
);
// Check that First Gold have not already been claimed this season
// for a given tokenId
require(
!seasonClaimedByTokenId[season][tokenId],
"GOLD_CLAIMED_FOR_TOKEN_ID"
);
// Effects
// Mark that First Gold has been claimed for this season for the
// given tokenId
seasonClaimedByTokenId[season][tokenId] = true;
// Interactions
// Send First Gold to the owner of the token ID
_mint(tokenOwner, FirstGoldPerTokenId);
}
/// @notice Allows the DAO to mint new tokens for use within the first
/// Ecosystem
/// @param amountDisplayValue The amount of first to mint. This should be
/// input as the display value, not in raw decimals. If you want to mint
/// 100 first, you should enter "100" rather than the value of 100 * 10^18.
function daoMint(uint256 amountDisplayValue) external onlyOwner {
_mint(owner(), amountDisplayValue * (10**decimals()));
}
/// @notice Allows the DAO to set a new contract address for first. This is
/// relevant in the event that first migrates to a new contract.
/// @param firstContractAddress_ The new contract address for first
function daoSetfirstContractAddress(address firstContractAddress_)
external
onlyOwner
{
firstContractAddress = firstContractAddress_;
firstContract = IERC721Enumerable(firstContractAddress);
}
/// @notice Allows the DAO to set the token IDs that are eligible to claim
/// first
/// @param tokenIdStart_ The start of the eligible token range
/// @param tokenIdEnd_ The end of the eligible token range
/// @dev This is relevant in case a future first contract has a different
/// total supply of first
function daoSetTokenIdRange(uint256 tokenIdStart_, uint256 tokenIdEnd_)
external
onlyOwner
{
tokenIdStart = tokenIdStart_;
tokenIdEnd = tokenIdEnd_;
}
/// @notice Allows the DAO to set a season for new First Gold claims
/// @param season_ The season to use for claiming first
function daoSetSeason(uint256 season_) public onlyOwner {
season = season_;
}
/// @notice Allows the DAO to set the amount of First Gold that is
/// claimed per token ID
/// @param FirstGoldDisplayValue The amount of first a user can claim.
/// This should be input as the display value, not in raw decimals. If you
/// want to mint 100 first, you should enter "100" rather than the value of
/// 100 * 10^18.
function daoSetFirstGoldPerTokenId(uint256 FirstGoldDisplayValue)
public
onlyOwner
{
FirstGoldPerTokenId = FirstGoldDisplayValue * (10**decimals());
}
/// @notice Allows the DAO to set the season and First Gold per token ID
/// in one transaction. This ensures that there is not a gap where a user
/// can claim more First Gold than others
/// @param season_ The season to use for claiming first
/// @param FirstGoldDisplayValue The amount of first a user can claim.
/// This should be input as the display value, not in raw decimals. If you
/// want to mint 100 first, you should enter "100" rather than the value of
/// 100 * 10^18.
/// @dev We would save a tiny amount of gas by modifying the season and
/// FirstGold variables directly. It is better practice for security,
/// however, to avoid repeating code. This function is so rarely used that
/// it's not worth moving these values into their own internal function to
/// skip the gas used on the modifier check.
function daoSetSeasonAndFirstGoldPerTokenID(
uint256 season_,
uint256 FirstGoldDisplayValue
) external onlyOwner {
daoSetSeason(season_);
daoSetFirstGoldPerTokenId(FirstGoldDisplayValue);
}
} | daoSetSeason | function daoSetSeason(uint256 season_) public onlyOwner {
season = season_;
}
| /// @notice Allows the DAO to set a season for new First Gold claims
/// @param season_ The season to use for claiming first | NatSpecSingleLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
7237,
7333
]
} | 59,408 |
||
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | FirstGold | contract FirstGold is Context, Ownable, ERC20 {
// first contract is available at https://etherscan.io/address/0xff9c1b15b16263c61d017ee9f65c50e4ae0113d7
address public firstContractAddress =
0xc9Cb0FEe73f060Db66D2693D92d75c825B1afdbF;
IERC721Enumerable public firstContract;
// Give out 10,000 First Gold for every first Bag that a user holds
uint256 public FirstGoldPerTokenId = 10000 * (10**decimals());
// tokenIdStart of 1 is First on the following lines in the first contract:
/**
function claim(uint256 tokenId) public nonReentrant {
require(tokenId > 0 && tokenId < 7778, "Token ID invalid");
_safeMint(_msgSender(), tokenId);
}
*/
uint256 public tokenIdStart = 1;
// tokenIdEnd of 8000 is First on the following lines in the first contract:
/**
function ownerClaim(uint256 tokenId) public nonReentrant onlyOwner {
require(tokenId > 7777 && tokenId < 8001, "Token ID invalid");
_safeMint(owner(), tokenId);
}
*/
uint256 public tokenIdEnd = 8000;
// Seasons are used to allow users to claim tokens regularly. Seasons are
// decided by the DAO.
uint256 public season = 0;
// Track claimed tokens within a season
// IMPORTANT: The format of the mapping is:
// claimedForSeason[season][tokenId][claimed]
mapping(uint256 => mapping(uint256 => bool)) public seasonClaimedByTokenId;
constructor() Ownable() ERC20("First Gold", "BGLD") {
// Transfer ownership to the first DAO
// Ownable by OpenZeppelin automatically sets owner to msg.sender, but
// we're going to be using a separate wallet for deployment
transferOwnership(_msgSender());
firstContract = IERC721Enumerable(firstContractAddress);
}
/// @notice Claim First Gold for a given first ID
/// @param tokenId The tokenId of the first NFT
function claimById(uint256 tokenId) external {
// Follow the Checks-Effects-Interactions pattern to prevent reentrancy
// attacks
// Checks
// Check that the msgSender owns the token that is being claimed
require(
_msgSender() == firstContract.ownerOf(tokenId),
"MUST_OWN_TOKEN_ID"
);
// Further Checks, Effects, and Interactions are contained within the
// _claim() function
_claim(tokenId, _msgSender());
}
/// @notice Claim First Gold for all tokens owned by the sender
/// @notice This function will run out of gas if you have too much first! If
/// this is a concern, you should use claimRangeForOwner and claim First
/// Gold in batches.
function claimAllForOwner() external {
uint256 tokenBalanceOwner = firstContract.balanceOf(_msgSender());
// Checks
require(tokenBalanceOwner > 0, "NO_TOKENS_OWNED");
// i < tokenBalanceOwner because tokenBalanceOwner is 1-indexed
for (uint256 i = 0; i < tokenBalanceOwner; i++) {
// Further Checks, Effects, and Interactions are contained within
// the _claim() function
_claim(
firstContract.tokenOfOwnerByIndex(_msgSender(), i),
_msgSender()
);
}
}
/// @notice Claim First Gold for all tokens owned by the sender within a
/// given range
/// @notice This function is useful if you own too much first to claim all at
/// once or if you want to leave some first unclaimed. If you leave first
/// unclaimed, however, you cannot claim it once the next season starts.
function claimRangeForOwner(uint256 ownerIndexStart, uint256 ownerIndexEnd)
external
{
uint256 tokenBalanceOwner = firstContract.balanceOf(_msgSender());
// Checks
require(tokenBalanceOwner > 0, "NO_TOKENS_OWNED");
// We use < for ownerIndexEnd and tokenBalanceOwner because
// tokenOfOwnerByIndex is 0-indexed while the token balance is 1-indexed
require(
ownerIndexStart >= 0 && ownerIndexEnd < tokenBalanceOwner,
"INDEX_OUT_OF_RANGE"
);
// i <= ownerIndexEnd because ownerIndexEnd is 0-indexed
for (uint256 i = ownerIndexStart; i <= ownerIndexEnd; i++) {
// Further Checks, Effects, and Interactions are contained within
// the _claim() function
_claim(
firstContract.tokenOfOwnerByIndex(_msgSender(), i),
_msgSender()
);
}
}
/// @dev Internal function to mint first upon claiming
function _claim(uint256 tokenId, address tokenOwner) internal {
// Checks
// Check that the token ID is in range
// We use >= and <= to here because all of the token IDs are 0-indexed
require(
tokenId >= tokenIdStart && tokenId <= tokenIdEnd,
"TOKEN_ID_OUT_OF_RANGE"
);
// Check that First Gold have not already been claimed this season
// for a given tokenId
require(
!seasonClaimedByTokenId[season][tokenId],
"GOLD_CLAIMED_FOR_TOKEN_ID"
);
// Effects
// Mark that First Gold has been claimed for this season for the
// given tokenId
seasonClaimedByTokenId[season][tokenId] = true;
// Interactions
// Send First Gold to the owner of the token ID
_mint(tokenOwner, FirstGoldPerTokenId);
}
/// @notice Allows the DAO to mint new tokens for use within the first
/// Ecosystem
/// @param amountDisplayValue The amount of first to mint. This should be
/// input as the display value, not in raw decimals. If you want to mint
/// 100 first, you should enter "100" rather than the value of 100 * 10^18.
function daoMint(uint256 amountDisplayValue) external onlyOwner {
_mint(owner(), amountDisplayValue * (10**decimals()));
}
/// @notice Allows the DAO to set a new contract address for first. This is
/// relevant in the event that first migrates to a new contract.
/// @param firstContractAddress_ The new contract address for first
function daoSetfirstContractAddress(address firstContractAddress_)
external
onlyOwner
{
firstContractAddress = firstContractAddress_;
firstContract = IERC721Enumerable(firstContractAddress);
}
/// @notice Allows the DAO to set the token IDs that are eligible to claim
/// first
/// @param tokenIdStart_ The start of the eligible token range
/// @param tokenIdEnd_ The end of the eligible token range
/// @dev This is relevant in case a future first contract has a different
/// total supply of first
function daoSetTokenIdRange(uint256 tokenIdStart_, uint256 tokenIdEnd_)
external
onlyOwner
{
tokenIdStart = tokenIdStart_;
tokenIdEnd = tokenIdEnd_;
}
/// @notice Allows the DAO to set a season for new First Gold claims
/// @param season_ The season to use for claiming first
function daoSetSeason(uint256 season_) public onlyOwner {
season = season_;
}
/// @notice Allows the DAO to set the amount of First Gold that is
/// claimed per token ID
/// @param FirstGoldDisplayValue The amount of first a user can claim.
/// This should be input as the display value, not in raw decimals. If you
/// want to mint 100 first, you should enter "100" rather than the value of
/// 100 * 10^18.
function daoSetFirstGoldPerTokenId(uint256 FirstGoldDisplayValue)
public
onlyOwner
{
FirstGoldPerTokenId = FirstGoldDisplayValue * (10**decimals());
}
/// @notice Allows the DAO to set the season and First Gold per token ID
/// in one transaction. This ensures that there is not a gap where a user
/// can claim more First Gold than others
/// @param season_ The season to use for claiming first
/// @param FirstGoldDisplayValue The amount of first a user can claim.
/// This should be input as the display value, not in raw decimals. If you
/// want to mint 100 first, you should enter "100" rather than the value of
/// 100 * 10^18.
/// @dev We would save a tiny amount of gas by modifying the season and
/// FirstGold variables directly. It is better practice for security,
/// however, to avoid repeating code. This function is so rarely used that
/// it's not worth moving these values into their own internal function to
/// skip the gas used on the modifier check.
function daoSetSeasonAndFirstGoldPerTokenID(
uint256 season_,
uint256 FirstGoldDisplayValue
) external onlyOwner {
daoSetSeason(season_);
daoSetFirstGoldPerTokenId(FirstGoldDisplayValue);
}
} | daoSetFirstGoldPerTokenId | function daoSetFirstGoldPerTokenId(uint256 FirstGoldDisplayValue)
public
onlyOwner
{
FirstGoldPerTokenId = FirstGoldDisplayValue * (10**decimals());
}
| /// @notice Allows the DAO to set the amount of First Gold that is
/// claimed per token ID
/// @param FirstGoldDisplayValue The amount of first a user can claim.
/// This should be input as the display value, not in raw decimals. If you
/// want to mint 100 first, you should enter "100" rather than the value of
/// 100 * 10^18. | NatSpecSingleLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
7697,
7889
]
} | 59,409 |
||
FirstGold | FirstGold.sol | 0xac2ef2bbeb7a749fdf2c75f18b15a208bc44646c | Solidity | FirstGold | contract FirstGold is Context, Ownable, ERC20 {
// first contract is available at https://etherscan.io/address/0xff9c1b15b16263c61d017ee9f65c50e4ae0113d7
address public firstContractAddress =
0xc9Cb0FEe73f060Db66D2693D92d75c825B1afdbF;
IERC721Enumerable public firstContract;
// Give out 10,000 First Gold for every first Bag that a user holds
uint256 public FirstGoldPerTokenId = 10000 * (10**decimals());
// tokenIdStart of 1 is First on the following lines in the first contract:
/**
function claim(uint256 tokenId) public nonReentrant {
require(tokenId > 0 && tokenId < 7778, "Token ID invalid");
_safeMint(_msgSender(), tokenId);
}
*/
uint256 public tokenIdStart = 1;
// tokenIdEnd of 8000 is First on the following lines in the first contract:
/**
function ownerClaim(uint256 tokenId) public nonReentrant onlyOwner {
require(tokenId > 7777 && tokenId < 8001, "Token ID invalid");
_safeMint(owner(), tokenId);
}
*/
uint256 public tokenIdEnd = 8000;
// Seasons are used to allow users to claim tokens regularly. Seasons are
// decided by the DAO.
uint256 public season = 0;
// Track claimed tokens within a season
// IMPORTANT: The format of the mapping is:
// claimedForSeason[season][tokenId][claimed]
mapping(uint256 => mapping(uint256 => bool)) public seasonClaimedByTokenId;
constructor() Ownable() ERC20("First Gold", "BGLD") {
// Transfer ownership to the first DAO
// Ownable by OpenZeppelin automatically sets owner to msg.sender, but
// we're going to be using a separate wallet for deployment
transferOwnership(_msgSender());
firstContract = IERC721Enumerable(firstContractAddress);
}
/// @notice Claim First Gold for a given first ID
/// @param tokenId The tokenId of the first NFT
function claimById(uint256 tokenId) external {
// Follow the Checks-Effects-Interactions pattern to prevent reentrancy
// attacks
// Checks
// Check that the msgSender owns the token that is being claimed
require(
_msgSender() == firstContract.ownerOf(tokenId),
"MUST_OWN_TOKEN_ID"
);
// Further Checks, Effects, and Interactions are contained within the
// _claim() function
_claim(tokenId, _msgSender());
}
/// @notice Claim First Gold for all tokens owned by the sender
/// @notice This function will run out of gas if you have too much first! If
/// this is a concern, you should use claimRangeForOwner and claim First
/// Gold in batches.
function claimAllForOwner() external {
uint256 tokenBalanceOwner = firstContract.balanceOf(_msgSender());
// Checks
require(tokenBalanceOwner > 0, "NO_TOKENS_OWNED");
// i < tokenBalanceOwner because tokenBalanceOwner is 1-indexed
for (uint256 i = 0; i < tokenBalanceOwner; i++) {
// Further Checks, Effects, and Interactions are contained within
// the _claim() function
_claim(
firstContract.tokenOfOwnerByIndex(_msgSender(), i),
_msgSender()
);
}
}
/// @notice Claim First Gold for all tokens owned by the sender within a
/// given range
/// @notice This function is useful if you own too much first to claim all at
/// once or if you want to leave some first unclaimed. If you leave first
/// unclaimed, however, you cannot claim it once the next season starts.
function claimRangeForOwner(uint256 ownerIndexStart, uint256 ownerIndexEnd)
external
{
uint256 tokenBalanceOwner = firstContract.balanceOf(_msgSender());
// Checks
require(tokenBalanceOwner > 0, "NO_TOKENS_OWNED");
// We use < for ownerIndexEnd and tokenBalanceOwner because
// tokenOfOwnerByIndex is 0-indexed while the token balance is 1-indexed
require(
ownerIndexStart >= 0 && ownerIndexEnd < tokenBalanceOwner,
"INDEX_OUT_OF_RANGE"
);
// i <= ownerIndexEnd because ownerIndexEnd is 0-indexed
for (uint256 i = ownerIndexStart; i <= ownerIndexEnd; i++) {
// Further Checks, Effects, and Interactions are contained within
// the _claim() function
_claim(
firstContract.tokenOfOwnerByIndex(_msgSender(), i),
_msgSender()
);
}
}
/// @dev Internal function to mint first upon claiming
function _claim(uint256 tokenId, address tokenOwner) internal {
// Checks
// Check that the token ID is in range
// We use >= and <= to here because all of the token IDs are 0-indexed
require(
tokenId >= tokenIdStart && tokenId <= tokenIdEnd,
"TOKEN_ID_OUT_OF_RANGE"
);
// Check that First Gold have not already been claimed this season
// for a given tokenId
require(
!seasonClaimedByTokenId[season][tokenId],
"GOLD_CLAIMED_FOR_TOKEN_ID"
);
// Effects
// Mark that First Gold has been claimed for this season for the
// given tokenId
seasonClaimedByTokenId[season][tokenId] = true;
// Interactions
// Send First Gold to the owner of the token ID
_mint(tokenOwner, FirstGoldPerTokenId);
}
/// @notice Allows the DAO to mint new tokens for use within the first
/// Ecosystem
/// @param amountDisplayValue The amount of first to mint. This should be
/// input as the display value, not in raw decimals. If you want to mint
/// 100 first, you should enter "100" rather than the value of 100 * 10^18.
function daoMint(uint256 amountDisplayValue) external onlyOwner {
_mint(owner(), amountDisplayValue * (10**decimals()));
}
/// @notice Allows the DAO to set a new contract address for first. This is
/// relevant in the event that first migrates to a new contract.
/// @param firstContractAddress_ The new contract address for first
function daoSetfirstContractAddress(address firstContractAddress_)
external
onlyOwner
{
firstContractAddress = firstContractAddress_;
firstContract = IERC721Enumerable(firstContractAddress);
}
/// @notice Allows the DAO to set the token IDs that are eligible to claim
/// first
/// @param tokenIdStart_ The start of the eligible token range
/// @param tokenIdEnd_ The end of the eligible token range
/// @dev This is relevant in case a future first contract has a different
/// total supply of first
function daoSetTokenIdRange(uint256 tokenIdStart_, uint256 tokenIdEnd_)
external
onlyOwner
{
tokenIdStart = tokenIdStart_;
tokenIdEnd = tokenIdEnd_;
}
/// @notice Allows the DAO to set a season for new First Gold claims
/// @param season_ The season to use for claiming first
function daoSetSeason(uint256 season_) public onlyOwner {
season = season_;
}
/// @notice Allows the DAO to set the amount of First Gold that is
/// claimed per token ID
/// @param FirstGoldDisplayValue The amount of first a user can claim.
/// This should be input as the display value, not in raw decimals. If you
/// want to mint 100 first, you should enter "100" rather than the value of
/// 100 * 10^18.
function daoSetFirstGoldPerTokenId(uint256 FirstGoldDisplayValue)
public
onlyOwner
{
FirstGoldPerTokenId = FirstGoldDisplayValue * (10**decimals());
}
/// @notice Allows the DAO to set the season and First Gold per token ID
/// in one transaction. This ensures that there is not a gap where a user
/// can claim more First Gold than others
/// @param season_ The season to use for claiming first
/// @param FirstGoldDisplayValue The amount of first a user can claim.
/// This should be input as the display value, not in raw decimals. If you
/// want to mint 100 first, you should enter "100" rather than the value of
/// 100 * 10^18.
/// @dev We would save a tiny amount of gas by modifying the season and
/// FirstGold variables directly. It is better practice for security,
/// however, to avoid repeating code. This function is so rarely used that
/// it's not worth moving these values into their own internal function to
/// skip the gas used on the modifier check.
function daoSetSeasonAndFirstGoldPerTokenID(
uint256 season_,
uint256 FirstGoldDisplayValue
) external onlyOwner {
daoSetSeason(season_);
daoSetFirstGoldPerTokenId(FirstGoldDisplayValue);
}
} | daoSetSeasonAndFirstGoldPerTokenID | function daoSetSeasonAndFirstGoldPerTokenID(
uint256 season_,
uint256 FirstGoldDisplayValue
) external onlyOwner {
daoSetSeason(season_);
daoSetFirstGoldPerTokenId(FirstGoldDisplayValue);
}
| /// @notice Allows the DAO to set the season and First Gold per token ID
/// in one transaction. This ensures that there is not a gap where a user
/// can claim more First Gold than others
/// @param season_ The season to use for claiming first
/// @param FirstGoldDisplayValue The amount of first a user can claim.
/// This should be input as the display value, not in raw decimals. If you
/// want to mint 100 first, you should enter "100" rather than the value of
/// 100 * 10^18.
/// @dev We would save a tiny amount of gas by modifying the season and
/// FirstGold variables directly. It is better practice for security,
/// however, to avoid repeating code. This function is so rarely used that
/// it's not worth moving these values into their own internal function to
/// skip the gas used on the modifier check. | NatSpecSingleLine | v0.8.0+commit.c7dfd78e | None | ipfs://d4bd291a99209ae227361d6d13639761ed029b72b8cad060e1da1b9a0998a706 | {
"func_code_index": [
8778,
9018
]
} | 59,410 |
||
Phantom | contracts/phantom.sol | 0x6d0683ed0f79411bd6bd1f5d517ede248ead34ad | Solidity | Phantom | contract Phantom is ERC721, Ownable {
using Strings for uint256;
uint256 public price = 0.09 ether;
bool public revealed;
string private _mysteryURI;
uint256 public supply = 3333;
bool public saleLive = false;
uint256 public totalSupply;
string private _contractURI;
string private _tokenBaseURI;
mapping(uint256 => bool) private usedNonce;
constructor() ERC721("Phantom", "PHANT") {}
// for presale
function presaleMint(uint256 tokenQuantity) external payable {
require(price * tokenQuantity <= msg.value, "x price");
require(totalSupply + tokenQuantity <= supply, "x supply");
require(saleLive, "closed");
require(tokenQuantity <= 4, "exceed");
for (uint256 i = 0; i < tokenQuantity; i++) {
_safeMint(msg.sender, totalSupply + i + 1);
}
totalSupply += tokenQuantity;
}
// main sale
function mint(uint256 tokenQuantity) external payable {
require(saleLive, "closed");
require(tokenQuantity <= 4, "exceed");
require(price * tokenQuantity <= msg.value, "x price");
require(totalSupply + tokenQuantity <= supply, "x supply");
for (uint256 i = 0; i < tokenQuantity; i++) {
_safeMint(msg.sender, totalSupply + i + 1);
}
totalSupply += tokenQuantity;
}
function gift(uint256 tokenQuantity, address wallet) external onlyOwner {
for (uint256 i = 0; i < tokenQuantity; i++) {
_safeMint(wallet, totalSupply + i + 1);
}
totalSupply += tokenQuantity;
}
// 200 + 200 + 350 + 1475 + 1450 + 1475 +1450 + 1450 + 1450 + 500
function withdraw() external {
uint256 currentBalance = address(this).balance;
payable(0xECe5Be2e951A8f9B6317bE94fAc75349E9146722).transfer(
(currentBalance * 200) / 10000
);
payable(0x1E69347BfC401C35866f8C3587e900c7996EDC6e).transfer(
(currentBalance * 200) / 10000
);
payable(0x9A9Cff3917fc031533867aF0BcC1c056b2c5Bf3c).transfer(
(currentBalance * 350) / 10000
);
payable(0x0243891818d63bE4f012956b04289dc490A2F60B).transfer(
(currentBalance * 1475) / 10000
);
payable(0x1485857eEE414282Ef2993370C5AC7Ee89ea7978).transfer(
(currentBalance * 1450) / 10000
);
payable(0xb1b3FC86B89d5C3F92E2766bca1085071Eab37F7).transfer(
(currentBalance * 1475) / 10000
);
payable(0x2b16EdeaCa67C831ba2786E793705Abf11308E3C).transfer(
(currentBalance * 1450) / 10000
);
payable(0x53A697f465701D6043097aDfC7213E72F85C84F2).transfer(
(currentBalance * 1450) / 10000
);
payable(0xbF7cF91d8590a81bEE26af41EBF545b1C7B6699c).transfer(
(currentBalance * 1450) / 10000
);
payable(0x5bceDA8d37A97Cc45E8adB6d5CfEff86c3b30507).transfer(
(currentBalance * 500) / 10000
);
}
function boolSaleStatus() external onlyOwner {
saleLive = !saleLive;
}
function newMysteryURI(string calldata URI) public onlyOwner {
_mysteryURI = URI;
}
function newPriceOfNFT(uint256 priceNew) external onlyOwner {
price = priceNew;
}
function boolMysteryURI() public onlyOwner {
revealed = !revealed;
}
function newBaseURI(string calldata URI) external onlyOwner {
_tokenBaseURI = URI;
}
function contractURI() public view returns (string memory) {
return _contractURI;
}
function newContractURI(string calldata URI) external onlyOwner {
_contractURI = URI;
}
function tokenURI(uint256 tokenId)
public
view
override(ERC721)
returns (string memory)
{
require(_exists(tokenId), "Cannot query non-existent token");
if (revealed == false) {
return _mysteryURI;
}
return
string(
abi.encodePacked(_tokenBaseURI, tokenId.toString(), ".json")
);
}
} | // ,----,
// ,-.----. ,--, ,--. ,/ .`| ,----.. ____
// \ / \ ,--.'| ,---, ,--.'| ,` .' : / / \ ,' , `.
// | : \ ,--, | : ' .' \ ,--,: : | ; ; // . : ,-+-,.' _ |
// | | .\ :,---.'| : ' / ; '. ,`--.'`| ' :.'___,/ ,'. / ;. \ ,-+-. ; , ||
// . : |: || | : _' |: : \ | : : | || : |. ; / ` ; ,--.'|' | ;|
// | | \ :: : |.' |: | /\ \ : | \ | :; |.'; ;; | ; \ ; || | ,', | ':
// | : . /| ' ' ; :| : ' ;. : | : ' '; |`----' | || : | ; | '| | / | | ||
// ; | |`-' ' | .'. || | ;/ \ \' ' ;. ; ' : ;. | ' ' ' :' | : | : |,
// | | ; | | : | '' : | \ \ ,'| | | \ | | | '' ; \; / |; . | ; |--'
// : ' | ' : | : ;| | ' '--' ' : | ; .' ' : | \ \ ', / | : | | ,
// : : : | | ' ,/ | : : | | '`--' ; |.' ; : / | : ' |/
// | | : ; : ;--' | | ,' ' : | '---' \ \ .' ; | |`-'
// `---'.| | ,/ `--'' ; |.' `---` | ;/
// `---` '---' '---' '---'
// Developer Telegram -> WomboGoon | LineComment | presaleMint | function presaleMint(uint256 tokenQuantity) external payable {
require(price * tokenQuantity <= msg.value, "x price");
require(totalSupply + tokenQuantity <= supply, "x supply");
require(saleLive, "closed");
require(tokenQuantity <= 4, "exceed");
for (uint256 i = 0; i < tokenQuantity; i++) {
_safeMint(msg.sender, totalSupply + i + 1);
}
totalSupply += tokenQuantity;
}
| // for presale | LineComment | v0.8.6+commit.11564f7e | {
"func_code_index": [
460,
911
]
} | 59,411 |
||
Phantom | contracts/phantom.sol | 0x6d0683ed0f79411bd6bd1f5d517ede248ead34ad | Solidity | Phantom | contract Phantom is ERC721, Ownable {
using Strings for uint256;
uint256 public price = 0.09 ether;
bool public revealed;
string private _mysteryURI;
uint256 public supply = 3333;
bool public saleLive = false;
uint256 public totalSupply;
string private _contractURI;
string private _tokenBaseURI;
mapping(uint256 => bool) private usedNonce;
constructor() ERC721("Phantom", "PHANT") {}
// for presale
function presaleMint(uint256 tokenQuantity) external payable {
require(price * tokenQuantity <= msg.value, "x price");
require(totalSupply + tokenQuantity <= supply, "x supply");
require(saleLive, "closed");
require(tokenQuantity <= 4, "exceed");
for (uint256 i = 0; i < tokenQuantity; i++) {
_safeMint(msg.sender, totalSupply + i + 1);
}
totalSupply += tokenQuantity;
}
// main sale
function mint(uint256 tokenQuantity) external payable {
require(saleLive, "closed");
require(tokenQuantity <= 4, "exceed");
require(price * tokenQuantity <= msg.value, "x price");
require(totalSupply + tokenQuantity <= supply, "x supply");
for (uint256 i = 0; i < tokenQuantity; i++) {
_safeMint(msg.sender, totalSupply + i + 1);
}
totalSupply += tokenQuantity;
}
function gift(uint256 tokenQuantity, address wallet) external onlyOwner {
for (uint256 i = 0; i < tokenQuantity; i++) {
_safeMint(wallet, totalSupply + i + 1);
}
totalSupply += tokenQuantity;
}
// 200 + 200 + 350 + 1475 + 1450 + 1475 +1450 + 1450 + 1450 + 500
function withdraw() external {
uint256 currentBalance = address(this).balance;
payable(0xECe5Be2e951A8f9B6317bE94fAc75349E9146722).transfer(
(currentBalance * 200) / 10000
);
payable(0x1E69347BfC401C35866f8C3587e900c7996EDC6e).transfer(
(currentBalance * 200) / 10000
);
payable(0x9A9Cff3917fc031533867aF0BcC1c056b2c5Bf3c).transfer(
(currentBalance * 350) / 10000
);
payable(0x0243891818d63bE4f012956b04289dc490A2F60B).transfer(
(currentBalance * 1475) / 10000
);
payable(0x1485857eEE414282Ef2993370C5AC7Ee89ea7978).transfer(
(currentBalance * 1450) / 10000
);
payable(0xb1b3FC86B89d5C3F92E2766bca1085071Eab37F7).transfer(
(currentBalance * 1475) / 10000
);
payable(0x2b16EdeaCa67C831ba2786E793705Abf11308E3C).transfer(
(currentBalance * 1450) / 10000
);
payable(0x53A697f465701D6043097aDfC7213E72F85C84F2).transfer(
(currentBalance * 1450) / 10000
);
payable(0xbF7cF91d8590a81bEE26af41EBF545b1C7B6699c).transfer(
(currentBalance * 1450) / 10000
);
payable(0x5bceDA8d37A97Cc45E8adB6d5CfEff86c3b30507).transfer(
(currentBalance * 500) / 10000
);
}
function boolSaleStatus() external onlyOwner {
saleLive = !saleLive;
}
function newMysteryURI(string calldata URI) public onlyOwner {
_mysteryURI = URI;
}
function newPriceOfNFT(uint256 priceNew) external onlyOwner {
price = priceNew;
}
function boolMysteryURI() public onlyOwner {
revealed = !revealed;
}
function newBaseURI(string calldata URI) external onlyOwner {
_tokenBaseURI = URI;
}
function contractURI() public view returns (string memory) {
return _contractURI;
}
function newContractURI(string calldata URI) external onlyOwner {
_contractURI = URI;
}
function tokenURI(uint256 tokenId)
public
view
override(ERC721)
returns (string memory)
{
require(_exists(tokenId), "Cannot query non-existent token");
if (revealed == false) {
return _mysteryURI;
}
return
string(
abi.encodePacked(_tokenBaseURI, tokenId.toString(), ".json")
);
}
} | // ,----,
// ,-.----. ,--, ,--. ,/ .`| ,----.. ____
// \ / \ ,--.'| ,---, ,--.'| ,` .' : / / \ ,' , `.
// | : \ ,--, | : ' .' \ ,--,: : | ; ; // . : ,-+-,.' _ |
// | | .\ :,---.'| : ' / ; '. ,`--.'`| ' :.'___,/ ,'. / ;. \ ,-+-. ; , ||
// . : |: || | : _' |: : \ | : : | || : |. ; / ` ; ,--.'|' | ;|
// | | \ :: : |.' |: | /\ \ : | \ | :; |.'; ;; | ; \ ; || | ,', | ':
// | : . /| ' ' ; :| : ' ;. : | : ' '; |`----' | || : | ; | '| | / | | ||
// ; | |`-' ' | .'. || | ;/ \ \' ' ;. ; ' : ;. | ' ' ' :' | : | : |,
// | | ; | | : | '' : | \ \ ,'| | | \ | | | '' ; \; / |; . | ; |--'
// : ' | ' : | : ;| | ' '--' ' : | ; .' ' : | \ \ ', / | : | | ,
// : : : | | ' ,/ | : : | | '`--' ; |.' ; : / | : ' |/
// | | : ; : ;--' | | ,' ' : | '---' \ \ .' ; | |`-'
// `---'.| | ,/ `--'' ; |.' `---` | ;/
// `---` '---' '---' '---'
// Developer Telegram -> WomboGoon | LineComment | mint | function mint(uint256 tokenQuantity) external payable {
require(saleLive, "closed");
require(tokenQuantity <= 4, "exceed");
require(price * tokenQuantity <= msg.value, "x price");
require(totalSupply + tokenQuantity <= supply, "x supply");
for (uint256 i = 0; i < tokenQuantity; i++) {
_safeMint(msg.sender, totalSupply + i + 1);
}
totalSupply += tokenQuantity;
}
| // main sale | LineComment | v0.8.6+commit.11564f7e | {
"func_code_index": [
931,
1375
]
} | 59,412 |
||
Phantom | contracts/phantom.sol | 0x6d0683ed0f79411bd6bd1f5d517ede248ead34ad | Solidity | Phantom | contract Phantom is ERC721, Ownable {
using Strings for uint256;
uint256 public price = 0.09 ether;
bool public revealed;
string private _mysteryURI;
uint256 public supply = 3333;
bool public saleLive = false;
uint256 public totalSupply;
string private _contractURI;
string private _tokenBaseURI;
mapping(uint256 => bool) private usedNonce;
constructor() ERC721("Phantom", "PHANT") {}
// for presale
function presaleMint(uint256 tokenQuantity) external payable {
require(price * tokenQuantity <= msg.value, "x price");
require(totalSupply + tokenQuantity <= supply, "x supply");
require(saleLive, "closed");
require(tokenQuantity <= 4, "exceed");
for (uint256 i = 0; i < tokenQuantity; i++) {
_safeMint(msg.sender, totalSupply + i + 1);
}
totalSupply += tokenQuantity;
}
// main sale
function mint(uint256 tokenQuantity) external payable {
require(saleLive, "closed");
require(tokenQuantity <= 4, "exceed");
require(price * tokenQuantity <= msg.value, "x price");
require(totalSupply + tokenQuantity <= supply, "x supply");
for (uint256 i = 0; i < tokenQuantity; i++) {
_safeMint(msg.sender, totalSupply + i + 1);
}
totalSupply += tokenQuantity;
}
function gift(uint256 tokenQuantity, address wallet) external onlyOwner {
for (uint256 i = 0; i < tokenQuantity; i++) {
_safeMint(wallet, totalSupply + i + 1);
}
totalSupply += tokenQuantity;
}
// 200 + 200 + 350 + 1475 + 1450 + 1475 +1450 + 1450 + 1450 + 500
function withdraw() external {
uint256 currentBalance = address(this).balance;
payable(0xECe5Be2e951A8f9B6317bE94fAc75349E9146722).transfer(
(currentBalance * 200) / 10000
);
payable(0x1E69347BfC401C35866f8C3587e900c7996EDC6e).transfer(
(currentBalance * 200) / 10000
);
payable(0x9A9Cff3917fc031533867aF0BcC1c056b2c5Bf3c).transfer(
(currentBalance * 350) / 10000
);
payable(0x0243891818d63bE4f012956b04289dc490A2F60B).transfer(
(currentBalance * 1475) / 10000
);
payable(0x1485857eEE414282Ef2993370C5AC7Ee89ea7978).transfer(
(currentBalance * 1450) / 10000
);
payable(0xb1b3FC86B89d5C3F92E2766bca1085071Eab37F7).transfer(
(currentBalance * 1475) / 10000
);
payable(0x2b16EdeaCa67C831ba2786E793705Abf11308E3C).transfer(
(currentBalance * 1450) / 10000
);
payable(0x53A697f465701D6043097aDfC7213E72F85C84F2).transfer(
(currentBalance * 1450) / 10000
);
payable(0xbF7cF91d8590a81bEE26af41EBF545b1C7B6699c).transfer(
(currentBalance * 1450) / 10000
);
payable(0x5bceDA8d37A97Cc45E8adB6d5CfEff86c3b30507).transfer(
(currentBalance * 500) / 10000
);
}
function boolSaleStatus() external onlyOwner {
saleLive = !saleLive;
}
function newMysteryURI(string calldata URI) public onlyOwner {
_mysteryURI = URI;
}
function newPriceOfNFT(uint256 priceNew) external onlyOwner {
price = priceNew;
}
function boolMysteryURI() public onlyOwner {
revealed = !revealed;
}
function newBaseURI(string calldata URI) external onlyOwner {
_tokenBaseURI = URI;
}
function contractURI() public view returns (string memory) {
return _contractURI;
}
function newContractURI(string calldata URI) external onlyOwner {
_contractURI = URI;
}
function tokenURI(uint256 tokenId)
public
view
override(ERC721)
returns (string memory)
{
require(_exists(tokenId), "Cannot query non-existent token");
if (revealed == false) {
return _mysteryURI;
}
return
string(
abi.encodePacked(_tokenBaseURI, tokenId.toString(), ".json")
);
}
} | // ,----,
// ,-.----. ,--, ,--. ,/ .`| ,----.. ____
// \ / \ ,--.'| ,---, ,--.'| ,` .' : / / \ ,' , `.
// | : \ ,--, | : ' .' \ ,--,: : | ; ; // . : ,-+-,.' _ |
// | | .\ :,---.'| : ' / ; '. ,`--.'`| ' :.'___,/ ,'. / ;. \ ,-+-. ; , ||
// . : |: || | : _' |: : \ | : : | || : |. ; / ` ; ,--.'|' | ;|
// | | \ :: : |.' |: | /\ \ : | \ | :; |.'; ;; | ; \ ; || | ,', | ':
// | : . /| ' ' ; :| : ' ;. : | : ' '; |`----' | || : | ; | '| | / | | ||
// ; | |`-' ' | .'. || | ;/ \ \' ' ;. ; ' : ;. | ' ' ' :' | : | : |,
// | | ; | | : | '' : | \ \ ,'| | | \ | | | '' ; \; / |; . | ; |--'
// : ' | ' : | : ;| | ' '--' ' : | ; .' ' : | \ \ ', / | : | | ,
// : : : | | ' ,/ | : : | | '`--' ; |.' ; : / | : ' |/
// | | : ; : ;--' | | ,' ' : | '---' \ \ .' ; | |`-'
// `---'.| | ,/ `--'' ; |.' `---` | ;/
// `---` '---' '---' '---'
// Developer Telegram -> WomboGoon | LineComment | withdraw | function withdraw() external {
uint256 currentBalance = address(this).balance;
payable(0xECe5Be2e951A8f9B6317bE94fAc75349E9146722).transfer(
(currentBalance * 200) / 10000
);
payable(0x1E69347BfC401C35866f8C3587e900c7996EDC6e).transfer(
(currentBalance * 200) / 10000
);
payable(0x9A9Cff3917fc031533867aF0BcC1c056b2c5Bf3c).transfer(
(currentBalance * 350) / 10000
);
payable(0x0243891818d63bE4f012956b04289dc490A2F60B).transfer(
(currentBalance * 1475) / 10000
);
payable(0x1485857eEE414282Ef2993370C5AC7Ee89ea7978).transfer(
(currentBalance * 1450) / 10000
);
payable(0xb1b3FC86B89d5C3F92E2766bca1085071Eab37F7).transfer(
(currentBalance * 1475) / 10000
);
payable(0x2b16EdeaCa67C831ba2786E793705Abf11308E3C).transfer(
(currentBalance * 1450) / 10000
);
payable(0x53A697f465701D6043097aDfC7213E72F85C84F2).transfer(
(currentBalance * 1450) / 10000
);
payable(0xbF7cF91d8590a81bEE26af41EBF545b1C7B6699c).transfer(
(currentBalance * 1450) / 10000
);
payable(0x5bceDA8d37A97Cc45E8adB6d5CfEff86c3b30507).transfer(
(currentBalance * 500) / 10000
);
}
| // 200 + 200 + 350 + 1475 + 1450 + 1475 +1450 + 1450 + 1450 + 500 | LineComment | v0.8.6+commit.11564f7e | {
"func_code_index": [
1688,
3030
]
} | 59,413 |
||
TheAlphabets | @openzeppelin/contracts/access/Ownable.sol | 0x46e19bd11772e5f4f984133b3e4aa5239097b36d | 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 () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), 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 {
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 virtual returns (address) {
return _owner;
}
| /**
* @dev Returns the address of the current owner.
*/ | NatSpecMultiLine | v0.7.6+commit.7338295f | MIT | ipfs://9cb5ce3b5c5bd1dd88543ef4571775906c4c1595568ec435be043d4a4011ecea | {
"func_code_index": [
506,
598
]
} | 59,414 |
TheAlphabets | @openzeppelin/contracts/access/Ownable.sol | 0x46e19bd11772e5f4f984133b3e4aa5239097b36d | 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 () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), 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 {
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 | v0.7.6+commit.7338295f | MIT | ipfs://9cb5ce3b5c5bd1dd88543ef4571775906c4c1595568ec435be043d4a4011ecea | {
"func_code_index": [
1157,
1310
]
} | 59,415 |
TheAlphabets | @openzeppelin/contracts/access/Ownable.sol | 0x46e19bd11772e5f4f984133b3e4aa5239097b36d | 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 () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), 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 {
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 | v0.7.6+commit.7338295f | MIT | ipfs://9cb5ce3b5c5bd1dd88543ef4571775906c4c1595568ec435be043d4a4011ecea | {
"func_code_index": [
1460,
1709
]
} | 59,416 |
TheAlphabets | @openzeppelin/contracts/access/Ownable.sol | 0x46e19bd11772e5f4f984133b3e4aa5239097b36d | Solidity | TheAlphabets | contract TheAlphabets is ERC721, ReentrancyGuard, Ownable {
using SafeMath for uint256;
string public PROVENANCE = "";
uint256 public NprojectersPrice = 30000000000000000; //0.03 ETH
uint256 public SLootsPrice = 30000000000000000; //0.03 ETH
uint256 public publicPrice = 50000000000000000; //0.05 ETH
bool public saleIsActive = true;
bool public privateSale = true;
string[] private alphabets = ["A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"];
//Nproject Contract
address public NprojectAddress = 0x05a46f1E545526FB803FF974C790aCeA34D1f2D6;
NprojectInterface NprojectContract = NprojectInterface(NprojectAddress);
//sLOOT contracts
address public SLootAddress = 0xb12F78434AE7D12Ae548c51A5cb734Ecc4536594;
NprojectInterface SLootContract = NprojectInterface(SLootAddress);
// mirror a random number
function random(string memory input) public pure returns (uint256) {
return (uint256(keccak256(abi.encodePacked(input))) %26);
}
function getLetter1(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 1 : ", alphabets);
}
function getLetter2(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 2 : ", alphabets);
}
function getLetter3(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 3 : ", alphabets);
}
function getLetter4(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 4 : ", alphabets);
}
function getLetter5(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 5 : ", alphabets);
}
function getLetter6(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 6 : ", alphabets);
}
function getLetter7(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 7 : ", alphabets);
}
function getLetter8(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 8 : ", alphabets);
}
function pluck(
uint256 tokenId,
string memory keyPrefix,
string[] memory sourceArray
) internal view returns (string memory) {
uint256 rand = random(
string(abi.encodePacked(keyPrefix, toString(tokenId)))
);
uint256 rand2 = random(
string(abi.encodePacked(keyPrefix, toString(tokenId)))
);
string memory output = string(
abi.encodePacked(sourceArray[rand % sourceArray.length] ));
string memory actual = string(abi.encodePacked(output));
return actual;
}
function tokenURI(uint256 tokenId) override public view returns (string memory) {
string[17] memory parts;
parts[0] = '<svg xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMinYMin meet" viewBox="0 0 350 350"><style>.base { fill: black; font-family: serif; font-size: 20px; }</style><rect width="100%" height="100%" fill="#f4ca16" /><text x="10" y="30" class="base">';
parts[1] = getLetter1(tokenId);
parts[2] = '</text><text x="10" y="60" class="base" font-weight="bold">';
parts[3] = getLetter2(tokenId);
// dealers 5 cards here
parts[4] = '</text><text x="10" y="90" class="base" font-weight="bold" >';
parts[5] = getLetter3(tokenId);
parts[6] = '</text><text x="10" y="120" class="base" font-weight="bold">';
parts[7] = getLetter4(tokenId);
parts[8] = '</text><text x="10" y="150" class="base" font-weight="bold" >';
parts[9] = getLetter5(tokenId);
parts[10] = '</text><text x="10" y="180" class="base" font-weight="bold" >';
parts[11] = getLetter6(tokenId);
parts[12] = '</text><text x="10" y="210" class="base" font-weight="bold" >';
parts[13] = getLetter7(tokenId);
parts[14] = '</text><text x="10" y="240" class="base" font-weight="bold" >';
parts[15] = getLetter8(tokenId);
parts[16] = '</text></svg>';
string memory output = string(abi.encodePacked(parts[0], parts[1], parts[2], parts[3], parts[4], parts[5], parts[6], parts[7], parts[8]));
output = string(abi.encodePacked(output, parts[9], parts[10], parts[11], parts[12], parts[13], parts[14], parts[15], parts[16]));
string memory json = Base64.encode(bytes(string(abi.encodePacked('{"name": "ALPHABETS #', toString(tokenId), '", "description": "Randomized generated alphabets stored on chain. Feel free to use the alphabets in any way you want.", "image": "data:image/svg+xml;base64,', Base64.encode(bytes(output)), '"}'))));
output = string(abi.encodePacked('data:application/json;base64,', json));
return output;
}
constructor() ERC721("TheAlphabets", "ABC") {
}
function withdraw() public onlyOwner {
uint balance = address(this).balance;
msg.sender.transfer(balance);
}
function deposit() public payable onlyOwner {}
function flipSaleState() public onlyOwner {
saleIsActive = !saleIsActive;
}
function endPrivateSale() public onlyOwner {
require(privateSale);
privateSale = false;
}
function setNprojectersPrice(uint256 newPrice) public onlyOwner {
NprojectersPrice = newPrice;
}
function setSLootsPrice(uint256 newPrice) public onlyOwner {
SLootsPrice = newPrice;
}
function setPublicPrice(uint256 newPrice) public onlyOwner {
publicPrice = newPrice;
}
function setBaseURI(string memory baseURI) public onlyOwner {
_setBaseURI(baseURI);
}
function setProvenance(string memory prov) public onlyOwner {
PROVENANCE = prov;
}
//Private sale minting (reserved for Nproject owners)
function mintWithNproject(uint NprojectId, uint TokenIdWanted) public payable nonReentrant {
require(privateSale, "Private sale minting is over");
require(saleIsActive, "Sale must be active to mint");
require(NprojectersPrice <= msg.value, "Ether value sent is not correct");
require(NprojectContract.ownerOf(NprojectId) == msg.sender, "Not the owner of this Nproject");
require(!_exists(TokenIdWanted), "This token has already been minted");
require(TokenIdWanted > 0 && TokenIdWanted <= 9999, "Token ID invalid");
_safeMint(msg.sender, TokenIdWanted);
}
//Private sale minting (reserved for sLOOT owners)
function mintWithSLoot(uint SLootId, uint TokenIdWanted) public payable nonReentrant {
require(privateSale, "Private sale minting is over");
require(saleIsActive, "Sale must be active to mint");
require(SLootsPrice <= msg.value, "Ether value sent is not correct");
require(SLootContract.ownerOf(SLootId) == msg.sender, "Not the owner of this SLoot");
require(!_exists(TokenIdWanted), "This token has already been minted");
require(TokenIdWanted > 0 && TokenIdWanted <= 9999, "Token ID invalid");
_safeMint(msg.sender, TokenIdWanted);
}
//Public sale minting
function mint(uint TokenIdWanted) public payable nonReentrant {
require(saleIsActive, "Sale must be active to mint");
require(publicPrice <= msg.value, "Ether value sent is not correct");
require(TokenIdWanted > 0 && TokenIdWanted <= 9999, "Token ID invalid");
require(!_exists(TokenIdWanted), "This token has already been minted");
_safeMint(msg.sender, TokenIdWanted);
}
function multiMint(uint[] memory TokenIdsWanted) public payable nonReentrant {
require(saleIsActive, "Sale must be active to mint");
require((publicPrice * TokenIdsWanted.length) <= msg.value, "Ether value sent is not correct");
for (uint i=0; i<TokenIdsWanted.length; i++) {
require(TokenIdsWanted[i] > 0 && TokenIdsWanted[i] <= 9999, "Token ID invalid");
require(!_exists(TokenIdsWanted[i]), "One of these tokens have already been minted");
_safeMint(msg.sender, TokenIdsWanted[i]);
}
}
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT license
// 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);
}
} | /**
* @title Realms contract
* @dev Extends ERC721 Non-Fungible Token Standard basic implementation
*/ | NatSpecMultiLine | random | function random(string memory input) public pure returns (uint256) {
return (uint256(keccak256(abi.encodePacked(input))) %26);
}
| // mirror a random number | LineComment | v0.7.6+commit.7338295f | MIT | ipfs://9cb5ce3b5c5bd1dd88543ef4571775906c4c1595568ec435be043d4a4011ecea | {
"func_code_index": [
957,
1104
]
} | 59,417 |
TheAlphabets | @openzeppelin/contracts/access/Ownable.sol | 0x46e19bd11772e5f4f984133b3e4aa5239097b36d | Solidity | TheAlphabets | contract TheAlphabets is ERC721, ReentrancyGuard, Ownable {
using SafeMath for uint256;
string public PROVENANCE = "";
uint256 public NprojectersPrice = 30000000000000000; //0.03 ETH
uint256 public SLootsPrice = 30000000000000000; //0.03 ETH
uint256 public publicPrice = 50000000000000000; //0.05 ETH
bool public saleIsActive = true;
bool public privateSale = true;
string[] private alphabets = ["A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"];
//Nproject Contract
address public NprojectAddress = 0x05a46f1E545526FB803FF974C790aCeA34D1f2D6;
NprojectInterface NprojectContract = NprojectInterface(NprojectAddress);
//sLOOT contracts
address public SLootAddress = 0xb12F78434AE7D12Ae548c51A5cb734Ecc4536594;
NprojectInterface SLootContract = NprojectInterface(SLootAddress);
// mirror a random number
function random(string memory input) public pure returns (uint256) {
return (uint256(keccak256(abi.encodePacked(input))) %26);
}
function getLetter1(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 1 : ", alphabets);
}
function getLetter2(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 2 : ", alphabets);
}
function getLetter3(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 3 : ", alphabets);
}
function getLetter4(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 4 : ", alphabets);
}
function getLetter5(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 5 : ", alphabets);
}
function getLetter6(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 6 : ", alphabets);
}
function getLetter7(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 7 : ", alphabets);
}
function getLetter8(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 8 : ", alphabets);
}
function pluck(
uint256 tokenId,
string memory keyPrefix,
string[] memory sourceArray
) internal view returns (string memory) {
uint256 rand = random(
string(abi.encodePacked(keyPrefix, toString(tokenId)))
);
uint256 rand2 = random(
string(abi.encodePacked(keyPrefix, toString(tokenId)))
);
string memory output = string(
abi.encodePacked(sourceArray[rand % sourceArray.length] ));
string memory actual = string(abi.encodePacked(output));
return actual;
}
function tokenURI(uint256 tokenId) override public view returns (string memory) {
string[17] memory parts;
parts[0] = '<svg xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMinYMin meet" viewBox="0 0 350 350"><style>.base { fill: black; font-family: serif; font-size: 20px; }</style><rect width="100%" height="100%" fill="#f4ca16" /><text x="10" y="30" class="base">';
parts[1] = getLetter1(tokenId);
parts[2] = '</text><text x="10" y="60" class="base" font-weight="bold">';
parts[3] = getLetter2(tokenId);
// dealers 5 cards here
parts[4] = '</text><text x="10" y="90" class="base" font-weight="bold" >';
parts[5] = getLetter3(tokenId);
parts[6] = '</text><text x="10" y="120" class="base" font-weight="bold">';
parts[7] = getLetter4(tokenId);
parts[8] = '</text><text x="10" y="150" class="base" font-weight="bold" >';
parts[9] = getLetter5(tokenId);
parts[10] = '</text><text x="10" y="180" class="base" font-weight="bold" >';
parts[11] = getLetter6(tokenId);
parts[12] = '</text><text x="10" y="210" class="base" font-weight="bold" >';
parts[13] = getLetter7(tokenId);
parts[14] = '</text><text x="10" y="240" class="base" font-weight="bold" >';
parts[15] = getLetter8(tokenId);
parts[16] = '</text></svg>';
string memory output = string(abi.encodePacked(parts[0], parts[1], parts[2], parts[3], parts[4], parts[5], parts[6], parts[7], parts[8]));
output = string(abi.encodePacked(output, parts[9], parts[10], parts[11], parts[12], parts[13], parts[14], parts[15], parts[16]));
string memory json = Base64.encode(bytes(string(abi.encodePacked('{"name": "ALPHABETS #', toString(tokenId), '", "description": "Randomized generated alphabets stored on chain. Feel free to use the alphabets in any way you want.", "image": "data:image/svg+xml;base64,', Base64.encode(bytes(output)), '"}'))));
output = string(abi.encodePacked('data:application/json;base64,', json));
return output;
}
constructor() ERC721("TheAlphabets", "ABC") {
}
function withdraw() public onlyOwner {
uint balance = address(this).balance;
msg.sender.transfer(balance);
}
function deposit() public payable onlyOwner {}
function flipSaleState() public onlyOwner {
saleIsActive = !saleIsActive;
}
function endPrivateSale() public onlyOwner {
require(privateSale);
privateSale = false;
}
function setNprojectersPrice(uint256 newPrice) public onlyOwner {
NprojectersPrice = newPrice;
}
function setSLootsPrice(uint256 newPrice) public onlyOwner {
SLootsPrice = newPrice;
}
function setPublicPrice(uint256 newPrice) public onlyOwner {
publicPrice = newPrice;
}
function setBaseURI(string memory baseURI) public onlyOwner {
_setBaseURI(baseURI);
}
function setProvenance(string memory prov) public onlyOwner {
PROVENANCE = prov;
}
//Private sale minting (reserved for Nproject owners)
function mintWithNproject(uint NprojectId, uint TokenIdWanted) public payable nonReentrant {
require(privateSale, "Private sale minting is over");
require(saleIsActive, "Sale must be active to mint");
require(NprojectersPrice <= msg.value, "Ether value sent is not correct");
require(NprojectContract.ownerOf(NprojectId) == msg.sender, "Not the owner of this Nproject");
require(!_exists(TokenIdWanted), "This token has already been minted");
require(TokenIdWanted > 0 && TokenIdWanted <= 9999, "Token ID invalid");
_safeMint(msg.sender, TokenIdWanted);
}
//Private sale minting (reserved for sLOOT owners)
function mintWithSLoot(uint SLootId, uint TokenIdWanted) public payable nonReentrant {
require(privateSale, "Private sale minting is over");
require(saleIsActive, "Sale must be active to mint");
require(SLootsPrice <= msg.value, "Ether value sent is not correct");
require(SLootContract.ownerOf(SLootId) == msg.sender, "Not the owner of this SLoot");
require(!_exists(TokenIdWanted), "This token has already been minted");
require(TokenIdWanted > 0 && TokenIdWanted <= 9999, "Token ID invalid");
_safeMint(msg.sender, TokenIdWanted);
}
//Public sale minting
function mint(uint TokenIdWanted) public payable nonReentrant {
require(saleIsActive, "Sale must be active to mint");
require(publicPrice <= msg.value, "Ether value sent is not correct");
require(TokenIdWanted > 0 && TokenIdWanted <= 9999, "Token ID invalid");
require(!_exists(TokenIdWanted), "This token has already been minted");
_safeMint(msg.sender, TokenIdWanted);
}
function multiMint(uint[] memory TokenIdsWanted) public payable nonReentrant {
require(saleIsActive, "Sale must be active to mint");
require((publicPrice * TokenIdsWanted.length) <= msg.value, "Ether value sent is not correct");
for (uint i=0; i<TokenIdsWanted.length; i++) {
require(TokenIdsWanted[i] > 0 && TokenIdsWanted[i] <= 9999, "Token ID invalid");
require(!_exists(TokenIdsWanted[i]), "One of these tokens have already been minted");
_safeMint(msg.sender, TokenIdsWanted[i]);
}
}
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT license
// 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);
}
} | /**
* @title Realms contract
* @dev Extends ERC721 Non-Fungible Token Standard basic implementation
*/ | NatSpecMultiLine | mintWithNproject | function mintWithNproject(uint NprojectId, uint TokenIdWanted) public payable nonReentrant {
require(privateSale, "Private sale minting is over");
require(saleIsActive, "Sale must be active to mint");
require(NprojectersPrice <= msg.value, "Ether value sent is not correct");
require(NprojectContract.ownerOf(NprojectId) == msg.sender, "Not the owner of this Nproject");
require(!_exists(TokenIdWanted), "This token has already been minted");
require(TokenIdWanted > 0 && TokenIdWanted <= 9999, "Token ID invalid");
_safeMint(msg.sender, TokenIdWanted);
}
| //Private sale minting (reserved for Nproject owners) | LineComment | v0.7.6+commit.7338295f | MIT | ipfs://9cb5ce3b5c5bd1dd88543ef4571775906c4c1595568ec435be043d4a4011ecea | {
"func_code_index": [
6144,
6774
]
} | 59,418 |
TheAlphabets | @openzeppelin/contracts/access/Ownable.sol | 0x46e19bd11772e5f4f984133b3e4aa5239097b36d | Solidity | TheAlphabets | contract TheAlphabets is ERC721, ReentrancyGuard, Ownable {
using SafeMath for uint256;
string public PROVENANCE = "";
uint256 public NprojectersPrice = 30000000000000000; //0.03 ETH
uint256 public SLootsPrice = 30000000000000000; //0.03 ETH
uint256 public publicPrice = 50000000000000000; //0.05 ETH
bool public saleIsActive = true;
bool public privateSale = true;
string[] private alphabets = ["A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"];
//Nproject Contract
address public NprojectAddress = 0x05a46f1E545526FB803FF974C790aCeA34D1f2D6;
NprojectInterface NprojectContract = NprojectInterface(NprojectAddress);
//sLOOT contracts
address public SLootAddress = 0xb12F78434AE7D12Ae548c51A5cb734Ecc4536594;
NprojectInterface SLootContract = NprojectInterface(SLootAddress);
// mirror a random number
function random(string memory input) public pure returns (uint256) {
return (uint256(keccak256(abi.encodePacked(input))) %26);
}
function getLetter1(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 1 : ", alphabets);
}
function getLetter2(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 2 : ", alphabets);
}
function getLetter3(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 3 : ", alphabets);
}
function getLetter4(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 4 : ", alphabets);
}
function getLetter5(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 5 : ", alphabets);
}
function getLetter6(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 6 : ", alphabets);
}
function getLetter7(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 7 : ", alphabets);
}
function getLetter8(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 8 : ", alphabets);
}
function pluck(
uint256 tokenId,
string memory keyPrefix,
string[] memory sourceArray
) internal view returns (string memory) {
uint256 rand = random(
string(abi.encodePacked(keyPrefix, toString(tokenId)))
);
uint256 rand2 = random(
string(abi.encodePacked(keyPrefix, toString(tokenId)))
);
string memory output = string(
abi.encodePacked(sourceArray[rand % sourceArray.length] ));
string memory actual = string(abi.encodePacked(output));
return actual;
}
function tokenURI(uint256 tokenId) override public view returns (string memory) {
string[17] memory parts;
parts[0] = '<svg xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMinYMin meet" viewBox="0 0 350 350"><style>.base { fill: black; font-family: serif; font-size: 20px; }</style><rect width="100%" height="100%" fill="#f4ca16" /><text x="10" y="30" class="base">';
parts[1] = getLetter1(tokenId);
parts[2] = '</text><text x="10" y="60" class="base" font-weight="bold">';
parts[3] = getLetter2(tokenId);
// dealers 5 cards here
parts[4] = '</text><text x="10" y="90" class="base" font-weight="bold" >';
parts[5] = getLetter3(tokenId);
parts[6] = '</text><text x="10" y="120" class="base" font-weight="bold">';
parts[7] = getLetter4(tokenId);
parts[8] = '</text><text x="10" y="150" class="base" font-weight="bold" >';
parts[9] = getLetter5(tokenId);
parts[10] = '</text><text x="10" y="180" class="base" font-weight="bold" >';
parts[11] = getLetter6(tokenId);
parts[12] = '</text><text x="10" y="210" class="base" font-weight="bold" >';
parts[13] = getLetter7(tokenId);
parts[14] = '</text><text x="10" y="240" class="base" font-weight="bold" >';
parts[15] = getLetter8(tokenId);
parts[16] = '</text></svg>';
string memory output = string(abi.encodePacked(parts[0], parts[1], parts[2], parts[3], parts[4], parts[5], parts[6], parts[7], parts[8]));
output = string(abi.encodePacked(output, parts[9], parts[10], parts[11], parts[12], parts[13], parts[14], parts[15], parts[16]));
string memory json = Base64.encode(bytes(string(abi.encodePacked('{"name": "ALPHABETS #', toString(tokenId), '", "description": "Randomized generated alphabets stored on chain. Feel free to use the alphabets in any way you want.", "image": "data:image/svg+xml;base64,', Base64.encode(bytes(output)), '"}'))));
output = string(abi.encodePacked('data:application/json;base64,', json));
return output;
}
constructor() ERC721("TheAlphabets", "ABC") {
}
function withdraw() public onlyOwner {
uint balance = address(this).balance;
msg.sender.transfer(balance);
}
function deposit() public payable onlyOwner {}
function flipSaleState() public onlyOwner {
saleIsActive = !saleIsActive;
}
function endPrivateSale() public onlyOwner {
require(privateSale);
privateSale = false;
}
function setNprojectersPrice(uint256 newPrice) public onlyOwner {
NprojectersPrice = newPrice;
}
function setSLootsPrice(uint256 newPrice) public onlyOwner {
SLootsPrice = newPrice;
}
function setPublicPrice(uint256 newPrice) public onlyOwner {
publicPrice = newPrice;
}
function setBaseURI(string memory baseURI) public onlyOwner {
_setBaseURI(baseURI);
}
function setProvenance(string memory prov) public onlyOwner {
PROVENANCE = prov;
}
//Private sale minting (reserved for Nproject owners)
function mintWithNproject(uint NprojectId, uint TokenIdWanted) public payable nonReentrant {
require(privateSale, "Private sale minting is over");
require(saleIsActive, "Sale must be active to mint");
require(NprojectersPrice <= msg.value, "Ether value sent is not correct");
require(NprojectContract.ownerOf(NprojectId) == msg.sender, "Not the owner of this Nproject");
require(!_exists(TokenIdWanted), "This token has already been minted");
require(TokenIdWanted > 0 && TokenIdWanted <= 9999, "Token ID invalid");
_safeMint(msg.sender, TokenIdWanted);
}
//Private sale minting (reserved for sLOOT owners)
function mintWithSLoot(uint SLootId, uint TokenIdWanted) public payable nonReentrant {
require(privateSale, "Private sale minting is over");
require(saleIsActive, "Sale must be active to mint");
require(SLootsPrice <= msg.value, "Ether value sent is not correct");
require(SLootContract.ownerOf(SLootId) == msg.sender, "Not the owner of this SLoot");
require(!_exists(TokenIdWanted), "This token has already been minted");
require(TokenIdWanted > 0 && TokenIdWanted <= 9999, "Token ID invalid");
_safeMint(msg.sender, TokenIdWanted);
}
//Public sale minting
function mint(uint TokenIdWanted) public payable nonReentrant {
require(saleIsActive, "Sale must be active to mint");
require(publicPrice <= msg.value, "Ether value sent is not correct");
require(TokenIdWanted > 0 && TokenIdWanted <= 9999, "Token ID invalid");
require(!_exists(TokenIdWanted), "This token has already been minted");
_safeMint(msg.sender, TokenIdWanted);
}
function multiMint(uint[] memory TokenIdsWanted) public payable nonReentrant {
require(saleIsActive, "Sale must be active to mint");
require((publicPrice * TokenIdsWanted.length) <= msg.value, "Ether value sent is not correct");
for (uint i=0; i<TokenIdsWanted.length; i++) {
require(TokenIdsWanted[i] > 0 && TokenIdsWanted[i] <= 9999, "Token ID invalid");
require(!_exists(TokenIdsWanted[i]), "One of these tokens have already been minted");
_safeMint(msg.sender, TokenIdsWanted[i]);
}
}
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT license
// 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);
}
} | /**
* @title Realms contract
* @dev Extends ERC721 Non-Fungible Token Standard basic implementation
*/ | NatSpecMultiLine | mintWithSLoot | function mintWithSLoot(uint SLootId, uint TokenIdWanted) public payable nonReentrant {
require(privateSale, "Private sale minting is over");
require(saleIsActive, "Sale must be active to mint");
require(SLootsPrice <= msg.value, "Ether value sent is not correct");
require(SLootContract.ownerOf(SLootId) == msg.sender, "Not the owner of this SLoot");
require(!_exists(TokenIdWanted), "This token has already been minted");
require(TokenIdWanted > 0 && TokenIdWanted <= 9999, "Token ID invalid");
_safeMint(msg.sender, TokenIdWanted);
}
| //Private sale minting (reserved for sLOOT owners) | LineComment | v0.7.6+commit.7338295f | MIT | ipfs://9cb5ce3b5c5bd1dd88543ef4571775906c4c1595568ec435be043d4a4011ecea | {
"func_code_index": [
6839,
7485
]
} | 59,419 |
TheAlphabets | @openzeppelin/contracts/access/Ownable.sol | 0x46e19bd11772e5f4f984133b3e4aa5239097b36d | Solidity | TheAlphabets | contract TheAlphabets is ERC721, ReentrancyGuard, Ownable {
using SafeMath for uint256;
string public PROVENANCE = "";
uint256 public NprojectersPrice = 30000000000000000; //0.03 ETH
uint256 public SLootsPrice = 30000000000000000; //0.03 ETH
uint256 public publicPrice = 50000000000000000; //0.05 ETH
bool public saleIsActive = true;
bool public privateSale = true;
string[] private alphabets = ["A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"];
//Nproject Contract
address public NprojectAddress = 0x05a46f1E545526FB803FF974C790aCeA34D1f2D6;
NprojectInterface NprojectContract = NprojectInterface(NprojectAddress);
//sLOOT contracts
address public SLootAddress = 0xb12F78434AE7D12Ae548c51A5cb734Ecc4536594;
NprojectInterface SLootContract = NprojectInterface(SLootAddress);
// mirror a random number
function random(string memory input) public pure returns (uint256) {
return (uint256(keccak256(abi.encodePacked(input))) %26);
}
function getLetter1(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 1 : ", alphabets);
}
function getLetter2(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 2 : ", alphabets);
}
function getLetter3(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 3 : ", alphabets);
}
function getLetter4(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 4 : ", alphabets);
}
function getLetter5(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 5 : ", alphabets);
}
function getLetter6(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 6 : ", alphabets);
}
function getLetter7(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 7 : ", alphabets);
}
function getLetter8(uint256 tokenId) public view returns (string memory) {
return pluck(tokenId, "Letter 8 : ", alphabets);
}
function pluck(
uint256 tokenId,
string memory keyPrefix,
string[] memory sourceArray
) internal view returns (string memory) {
uint256 rand = random(
string(abi.encodePacked(keyPrefix, toString(tokenId)))
);
uint256 rand2 = random(
string(abi.encodePacked(keyPrefix, toString(tokenId)))
);
string memory output = string(
abi.encodePacked(sourceArray[rand % sourceArray.length] ));
string memory actual = string(abi.encodePacked(output));
return actual;
}
function tokenURI(uint256 tokenId) override public view returns (string memory) {
string[17] memory parts;
parts[0] = '<svg xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMinYMin meet" viewBox="0 0 350 350"><style>.base { fill: black; font-family: serif; font-size: 20px; }</style><rect width="100%" height="100%" fill="#f4ca16" /><text x="10" y="30" class="base">';
parts[1] = getLetter1(tokenId);
parts[2] = '</text><text x="10" y="60" class="base" font-weight="bold">';
parts[3] = getLetter2(tokenId);
// dealers 5 cards here
parts[4] = '</text><text x="10" y="90" class="base" font-weight="bold" >';
parts[5] = getLetter3(tokenId);
parts[6] = '</text><text x="10" y="120" class="base" font-weight="bold">';
parts[7] = getLetter4(tokenId);
parts[8] = '</text><text x="10" y="150" class="base" font-weight="bold" >';
parts[9] = getLetter5(tokenId);
parts[10] = '</text><text x="10" y="180" class="base" font-weight="bold" >';
parts[11] = getLetter6(tokenId);
parts[12] = '</text><text x="10" y="210" class="base" font-weight="bold" >';
parts[13] = getLetter7(tokenId);
parts[14] = '</text><text x="10" y="240" class="base" font-weight="bold" >';
parts[15] = getLetter8(tokenId);
parts[16] = '</text></svg>';
string memory output = string(abi.encodePacked(parts[0], parts[1], parts[2], parts[3], parts[4], parts[5], parts[6], parts[7], parts[8]));
output = string(abi.encodePacked(output, parts[9], parts[10], parts[11], parts[12], parts[13], parts[14], parts[15], parts[16]));
string memory json = Base64.encode(bytes(string(abi.encodePacked('{"name": "ALPHABETS #', toString(tokenId), '", "description": "Randomized generated alphabets stored on chain. Feel free to use the alphabets in any way you want.", "image": "data:image/svg+xml;base64,', Base64.encode(bytes(output)), '"}'))));
output = string(abi.encodePacked('data:application/json;base64,', json));
return output;
}
constructor() ERC721("TheAlphabets", "ABC") {
}
function withdraw() public onlyOwner {
uint balance = address(this).balance;
msg.sender.transfer(balance);
}
function deposit() public payable onlyOwner {}
function flipSaleState() public onlyOwner {
saleIsActive = !saleIsActive;
}
function endPrivateSale() public onlyOwner {
require(privateSale);
privateSale = false;
}
function setNprojectersPrice(uint256 newPrice) public onlyOwner {
NprojectersPrice = newPrice;
}
function setSLootsPrice(uint256 newPrice) public onlyOwner {
SLootsPrice = newPrice;
}
function setPublicPrice(uint256 newPrice) public onlyOwner {
publicPrice = newPrice;
}
function setBaseURI(string memory baseURI) public onlyOwner {
_setBaseURI(baseURI);
}
function setProvenance(string memory prov) public onlyOwner {
PROVENANCE = prov;
}
//Private sale minting (reserved for Nproject owners)
function mintWithNproject(uint NprojectId, uint TokenIdWanted) public payable nonReentrant {
require(privateSale, "Private sale minting is over");
require(saleIsActive, "Sale must be active to mint");
require(NprojectersPrice <= msg.value, "Ether value sent is not correct");
require(NprojectContract.ownerOf(NprojectId) == msg.sender, "Not the owner of this Nproject");
require(!_exists(TokenIdWanted), "This token has already been minted");
require(TokenIdWanted > 0 && TokenIdWanted <= 9999, "Token ID invalid");
_safeMint(msg.sender, TokenIdWanted);
}
//Private sale minting (reserved for sLOOT owners)
function mintWithSLoot(uint SLootId, uint TokenIdWanted) public payable nonReentrant {
require(privateSale, "Private sale minting is over");
require(saleIsActive, "Sale must be active to mint");
require(SLootsPrice <= msg.value, "Ether value sent is not correct");
require(SLootContract.ownerOf(SLootId) == msg.sender, "Not the owner of this SLoot");
require(!_exists(TokenIdWanted), "This token has already been minted");
require(TokenIdWanted > 0 && TokenIdWanted <= 9999, "Token ID invalid");
_safeMint(msg.sender, TokenIdWanted);
}
//Public sale minting
function mint(uint TokenIdWanted) public payable nonReentrant {
require(saleIsActive, "Sale must be active to mint");
require(publicPrice <= msg.value, "Ether value sent is not correct");
require(TokenIdWanted > 0 && TokenIdWanted <= 9999, "Token ID invalid");
require(!_exists(TokenIdWanted), "This token has already been minted");
_safeMint(msg.sender, TokenIdWanted);
}
function multiMint(uint[] memory TokenIdsWanted) public payable nonReentrant {
require(saleIsActive, "Sale must be active to mint");
require((publicPrice * TokenIdsWanted.length) <= msg.value, "Ether value sent is not correct");
for (uint i=0; i<TokenIdsWanted.length; i++) {
require(TokenIdsWanted[i] > 0 && TokenIdsWanted[i] <= 9999, "Token ID invalid");
require(!_exists(TokenIdsWanted[i]), "One of these tokens have already been minted");
_safeMint(msg.sender, TokenIdsWanted[i]);
}
}
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT license
// 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);
}
} | /**
* @title Realms contract
* @dev Extends ERC721 Non-Fungible Token Standard basic implementation
*/ | NatSpecMultiLine | mint | function mint(uint TokenIdWanted) public payable nonReentrant {
require(saleIsActive, "Sale must be active to mint");
require(publicPrice <= msg.value, "Ether value sent is not correct");
require(TokenIdWanted > 0 && TokenIdWanted <= 9999, "Token ID invalid");
require(!_exists(TokenIdWanted), "This token has already been minted");
_safeMint(msg.sender, TokenIdWanted);
}
| //Public sale minting | LineComment | v0.7.6+commit.7338295f | MIT | ipfs://9cb5ce3b5c5bd1dd88543ef4571775906c4c1595568ec435be043d4a4011ecea | {
"func_code_index": [
7515,
7944
]
} | 59,420 |
TheAlphabets | @openzeppelin/contracts/access/Ownable.sol | 0x46e19bd11772e5f4f984133b3e4aa5239097b36d | Solidity | Base64 | library Base64 {
bytes internal constant TABLE = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
/// @notice Encodes some bytes to the base64 representation
function encode(bytes memory data) internal pure returns (string memory) {
uint256 len = data.length;
if (len == 0) return "";
// multiply by 4/3 rounded up
uint256 encodedLen = 4 * ((len + 2) / 3);
// Add some extra buffer at the end
bytes memory result = new bytes(encodedLen + 32);
bytes memory table = TABLE;
assembly {
let tablePtr := add(table, 1)
let resultPtr := add(result, 32)
for {
let i := 0
} lt(i, len) {
} {
i := add(i, 3)
let input := and(mload(add(data, i)), 0xffffff)
let out := mload(add(tablePtr, and(shr(18, input), 0x3F)))
out := shl(8, out)
out := add(out, and(mload(add(tablePtr, and(shr(12, input), 0x3F))), 0xFF))
out := shl(8, out)
out := add(out, and(mload(add(tablePtr, and(shr(6, input), 0x3F))), 0xFF))
out := shl(8, out)
out := add(out, and(mload(add(tablePtr, and(input, 0x3F))), 0xFF))
out := shl(224, out)
mstore(resultPtr, out)
resultPtr := add(resultPtr, 4)
}
switch mod(len, 3)
case 1 {
mstore(sub(resultPtr, 2), shl(240, 0x3d3d))
}
case 2 {
mstore(sub(resultPtr, 1), shl(248, 0x3d))
}
mstore(result, encodedLen)
}
return string(result);
}
} | encode | function encode(bytes memory data) internal pure returns (string memory) {
uint256 len = data.length;
if (len == 0) return "";
// multiply by 4/3 rounded up
uint256 encodedLen = 4 * ((len + 2) / 3);
// Add some extra buffer at the end
bytes memory result = new bytes(encodedLen + 32);
bytes memory table = TABLE;
assembly {
let tablePtr := add(table, 1)
let resultPtr := add(result, 32)
for {
let i := 0
} lt(i, len) {
} {
i := add(i, 3)
let input := and(mload(add(data, i)), 0xffffff)
let out := mload(add(tablePtr, and(shr(18, input), 0x3F)))
out := shl(8, out)
out := add(out, and(mload(add(tablePtr, and(shr(12, input), 0x3F))), 0xFF))
out := shl(8, out)
out := add(out, and(mload(add(tablePtr, and(shr(6, input), 0x3F))), 0xFF))
out := shl(8, out)
out := add(out, and(mload(add(tablePtr, and(input, 0x3F))), 0xFF))
out := shl(224, out)
mstore(resultPtr, out)
resultPtr := add(resultPtr, 4)
}
switch mod(len, 3)
case 1 {
mstore(sub(resultPtr, 2), shl(240, 0x3d3d))
}
case 2 {
mstore(sub(resultPtr, 1), shl(248, 0x3d))
}
mstore(result, encodedLen)
}
return string(result);
}
| /// @notice Encodes some bytes to the base64 representation | NatSpecSingleLine | v0.7.6+commit.7338295f | MIT | ipfs://9cb5ce3b5c5bd1dd88543ef4571775906c4c1595568ec435be043d4a4011ecea | {
"func_code_index": [
190,
1802
]
} | 59,421 |
||
LiquidityMigrator | LiquidityMigrator.sol | 0x2298f3960369fe07355c9750ab6813ead5fe1fdb | Solidity | IMigrator | interface IMigrator {
enum TYPE {
UNSTAKED,
STAKED,
WRAPPED
}
// migrate OHMv1, sOHMv1, or wsOHM for OHMv2, sOHMv2, or gOHM
function migrate(
uint256 _amount,
TYPE _from,
TYPE _to
) external;
} | migrate | function migrate(
uint256 _amount,
TYPE _from,
TYPE _to
) external;
| // migrate OHMv1, sOHMv1, or wsOHM for OHMv2, sOHMv2, or gOHM | LineComment | v0.7.5+commit.eb77ed08 | Unknown | ipfs://06699a48a9297884eb650b7821b5c1f59618b76c2a4964c959c077ac0415778c | {
"func_code_index": [
151,
239
]
} | 59,422 |
||
LiquidityMigrator | LiquidityMigrator.sol | 0x2298f3960369fe07355c9750ab6813ead5fe1fdb | Solidity | LiquidityMigrator | contract LiquidityMigrator {
using SafeERC20 for IERC20;
using SafeMath for uint256;
address public policy;
address public leftoverRecipient;
ITreasury internal immutable treasury =
ITreasury(0x873ad91fA4F2aA0d557C0919eC3F6c9D240cDd05);
IERC20 internal immutable oldOHM =
IERC20(0x383518188C0C6d7730D91b2c03a03C837814a899);
IERC20 internal immutable newOHM =
IERC20(0x64aa3364F17a4D01c6f1751Fd97C2BD3D7e7f1D5);
IMigrator internal immutable migrator =
IMigrator(0x184f3FAd8618a6F458C16bae63F70C426fE784B3);
constructor(address _leftoverRecipient) public {
policy = msg.sender;
leftoverRecipient = _leftoverRecipient;
}
modifier onlyPolicy() {
require(msg.sender == policy, "!policy");
_;
}
/**
* @notice Migrate LP and pair with new OHM
*/
function migrateLP(
address pair,
IUniswapV2Router routerFrom,
IUniswapV2Router routerTo,
address token,
uint256 _minA,
uint256 _minB,
uint256 _deadline
) external onlyPolicy {
// Since we are adding liquidity, any existing balance should be excluded
uint256 initialNewOHMBalance = newOHM.balanceOf(address(this));
// Fetch the treasury balance of the given liquidity pair
uint256 oldLPAmount = IERC20(pair).balanceOf(address(treasury));
treasury.manage(pair, oldLPAmount);
// Remove the V1 liquidity
IERC20(pair).approve(address(routerFrom), oldLPAmount);
(uint256 amountToken, uint256 amountOHM) = routerFrom.removeLiquidity(
token,
address(oldOHM),
oldLPAmount,
_minA,
_minB,
address(this),
_deadline
);
// Migrate the V1 OHM to V2 OHM
oldOHM.approve(address(migrator), amountOHM);
migrator.migrate(
amountOHM,
IMigrator.TYPE.UNSTAKED,
IMigrator.TYPE.UNSTAKED
);
uint256 amountNewOHM = newOHM.balanceOf(address(this)).sub(
initialNewOHMBalance
); // # V1 out != # V2 in
// Add the V2 liquidity
IERC20(token).approve(address(routerTo), amountToken);
newOHM.approve(address(routerTo), amountNewOHM);
routerTo.addLiquidity(
token,
address(newOHM),
amountToken,
amountNewOHM,
amountToken,
amountNewOHM,
address(treasury),
_deadline
);
// Send any leftover balance to the governor
newOHM.safeTransfer(leftoverRecipient, newOHM.balanceOf(address(this)));
oldOHM.safeTransfer(leftoverRecipient, oldOHM.balanceOf(address(this)));
IERC20(token).safeTransfer(
leftoverRecipient,
IERC20(token).balanceOf(address(this))
);
}
} | migrateLP | function migrateLP(
address pair,
IUniswapV2Router routerFrom,
IUniswapV2Router routerTo,
address token,
uint256 _minA,
uint256 _minB,
uint256 _deadline
) external onlyPolicy {
// Since we are adding liquidity, any existing balance should be excluded
uint256 initialNewOHMBalance = newOHM.balanceOf(address(this));
// Fetch the treasury balance of the given liquidity pair
uint256 oldLPAmount = IERC20(pair).balanceOf(address(treasury));
treasury.manage(pair, oldLPAmount);
// Remove the V1 liquidity
IERC20(pair).approve(address(routerFrom), oldLPAmount);
(uint256 amountToken, uint256 amountOHM) = routerFrom.removeLiquidity(
token,
address(oldOHM),
oldLPAmount,
_minA,
_minB,
address(this),
_deadline
);
// Migrate the V1 OHM to V2 OHM
oldOHM.approve(address(migrator), amountOHM);
migrator.migrate(
amountOHM,
IMigrator.TYPE.UNSTAKED,
IMigrator.TYPE.UNSTAKED
);
uint256 amountNewOHM = newOHM.balanceOf(address(this)).sub(
initialNewOHMBalance
); // # V1 out != # V2 in
// Add the V2 liquidity
IERC20(token).approve(address(routerTo), amountToken);
newOHM.approve(address(routerTo), amountNewOHM);
routerTo.addLiquidity(
token,
address(newOHM),
amountToken,
amountNewOHM,
amountToken,
amountNewOHM,
address(treasury),
_deadline
);
// Send any leftover balance to the governor
newOHM.safeTransfer(leftoverRecipient, newOHM.balanceOf(address(this)));
oldOHM.safeTransfer(leftoverRecipient, oldOHM.balanceOf(address(this)));
IERC20(token).safeTransfer(
leftoverRecipient,
IERC20(token).balanceOf(address(this))
);
}
| /**
* @notice Migrate LP and pair with new OHM
*/ | NatSpecMultiLine | v0.7.5+commit.eb77ed08 | Unknown | ipfs://06699a48a9297884eb650b7821b5c1f59618b76c2a4964c959c077ac0415778c | {
"func_code_index": [
843,
2688
]
} | 59,423 |
||
QuarkChain | QuarkChain.sol | 0x49358a824c66b64a2f0c8bb3c99dd73586afab16 | Solidity | QuarkChain | contract QuarkChain is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function QuarkChain() public {
symbol = "QKC";
name = "QuarkChain";
decimals = 18;
_totalSupply = 10000000000000000000000000000;
balances[0x8907a6757AfcA5276Cfca544671e9AAA98AbE2be] = _totalSupply;
Transfer(address(0), 0x8907a6757AfcA5276Cfca544671e9AAA98AbE2be, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
} | // ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ---------------------------------------------------------------------------- | LineComment | QuarkChain | function QuarkChain() public {
symbol = "QKC";
name = "QuarkChain";
decimals = 18;
_totalSupply = 10000000000000000000000000000;
balances[0x8907a6757AfcA5276Cfca544671e9AAA98AbE2be] = _totalSupply;
Transfer(address(0), 0x8907a6757AfcA5276Cfca544671e9AAA98AbE2be, _totalSupply);
}
| // ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------ | LineComment | v0.4.18+commit.9cf6e910 | bzzr://4384b8deba2e746c2d0ffd6d445724c75aa5caf146cde2d6dfcf26b9c44fbab9 | {
"func_code_index": [
457,
800
]
} | 59,424 |
|
QuarkChain | QuarkChain.sol | 0x49358a824c66b64a2f0c8bb3c99dd73586afab16 | Solidity | QuarkChain | contract QuarkChain is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function QuarkChain() public {
symbol = "QKC";
name = "QuarkChain";
decimals = 18;
_totalSupply = 10000000000000000000000000000;
balances[0x8907a6757AfcA5276Cfca544671e9AAA98AbE2be] = _totalSupply;
Transfer(address(0), 0x8907a6757AfcA5276Cfca544671e9AAA98AbE2be, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
} | // ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ---------------------------------------------------------------------------- | LineComment | totalSupply | function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
| // ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------ | LineComment | v0.4.18+commit.9cf6e910 | bzzr://4384b8deba2e746c2d0ffd6d445724c75aa5caf146cde2d6dfcf26b9c44fbab9 | {
"func_code_index": [
988,
1109
]
} | 59,425 |
|
QuarkChain | QuarkChain.sol | 0x49358a824c66b64a2f0c8bb3c99dd73586afab16 | Solidity | QuarkChain | contract QuarkChain is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function QuarkChain() public {
symbol = "QKC";
name = "QuarkChain";
decimals = 18;
_totalSupply = 10000000000000000000000000000;
balances[0x8907a6757AfcA5276Cfca544671e9AAA98AbE2be] = _totalSupply;
Transfer(address(0), 0x8907a6757AfcA5276Cfca544671e9AAA98AbE2be, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
} | // ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ---------------------------------------------------------------------------- | LineComment | balanceOf | function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
| // ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------ | LineComment | v0.4.18+commit.9cf6e910 | bzzr://4384b8deba2e746c2d0ffd6d445724c75aa5caf146cde2d6dfcf26b9c44fbab9 | {
"func_code_index": [
1329,
1458
]
} | 59,426 |
|
QuarkChain | QuarkChain.sol | 0x49358a824c66b64a2f0c8bb3c99dd73586afab16 | Solidity | QuarkChain | contract QuarkChain is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function QuarkChain() public {
symbol = "QKC";
name = "QuarkChain";
decimals = 18;
_totalSupply = 10000000000000000000000000000;
balances[0x8907a6757AfcA5276Cfca544671e9AAA98AbE2be] = _totalSupply;
Transfer(address(0), 0x8907a6757AfcA5276Cfca544671e9AAA98AbE2be, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
} | // ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ---------------------------------------------------------------------------- | LineComment | transfer | function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
| // ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------ | LineComment | v0.4.18+commit.9cf6e910 | bzzr://4384b8deba2e746c2d0ffd6d445724c75aa5caf146cde2d6dfcf26b9c44fbab9 | {
"func_code_index": [
1802,
2079
]
} | 59,427 |
|
QuarkChain | QuarkChain.sol | 0x49358a824c66b64a2f0c8bb3c99dd73586afab16 | Solidity | QuarkChain | contract QuarkChain is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function QuarkChain() public {
symbol = "QKC";
name = "QuarkChain";
decimals = 18;
_totalSupply = 10000000000000000000000000000;
balances[0x8907a6757AfcA5276Cfca544671e9AAA98AbE2be] = _totalSupply;
Transfer(address(0), 0x8907a6757AfcA5276Cfca544671e9AAA98AbE2be, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
} | // ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ---------------------------------------------------------------------------- | LineComment | approve | function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
| // ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------ | LineComment | v0.4.18+commit.9cf6e910 | bzzr://4384b8deba2e746c2d0ffd6d445724c75aa5caf146cde2d6dfcf26b9c44fbab9 | {
"func_code_index": [
2587,
2795
]
} | 59,428 |
|
QuarkChain | QuarkChain.sol | 0x49358a824c66b64a2f0c8bb3c99dd73586afab16 | Solidity | QuarkChain | contract QuarkChain is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function QuarkChain() public {
symbol = "QKC";
name = "QuarkChain";
decimals = 18;
_totalSupply = 10000000000000000000000000000;
balances[0x8907a6757AfcA5276Cfca544671e9AAA98AbE2be] = _totalSupply;
Transfer(address(0), 0x8907a6757AfcA5276Cfca544671e9AAA98AbE2be, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
} | // ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ---------------------------------------------------------------------------- | LineComment | transferFrom | function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
| // ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------ | LineComment | v0.4.18+commit.9cf6e910 | bzzr://4384b8deba2e746c2d0ffd6d445724c75aa5caf146cde2d6dfcf26b9c44fbab9 | {
"func_code_index": [
3326,
3684
]
} | 59,429 |
|
QuarkChain | QuarkChain.sol | 0x49358a824c66b64a2f0c8bb3c99dd73586afab16 | Solidity | QuarkChain | contract QuarkChain is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function QuarkChain() public {
symbol = "QKC";
name = "QuarkChain";
decimals = 18;
_totalSupply = 10000000000000000000000000000;
balances[0x8907a6757AfcA5276Cfca544671e9AAA98AbE2be] = _totalSupply;
Transfer(address(0), 0x8907a6757AfcA5276Cfca544671e9AAA98AbE2be, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
} | // ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ---------------------------------------------------------------------------- | LineComment | allowance | function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
| // ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------ | LineComment | v0.4.18+commit.9cf6e910 | bzzr://4384b8deba2e746c2d0ffd6d445724c75aa5caf146cde2d6dfcf26b9c44fbab9 | {
"func_code_index": [
3967,
4123
]
} | 59,430 |
|
QuarkChain | QuarkChain.sol | 0x49358a824c66b64a2f0c8bb3c99dd73586afab16 | Solidity | QuarkChain | contract QuarkChain is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function QuarkChain() public {
symbol = "QKC";
name = "QuarkChain";
decimals = 18;
_totalSupply = 10000000000000000000000000000;
balances[0x8907a6757AfcA5276Cfca544671e9AAA98AbE2be] = _totalSupply;
Transfer(address(0), 0x8907a6757AfcA5276Cfca544671e9AAA98AbE2be, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
} | // ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ---------------------------------------------------------------------------- | LineComment | approveAndCall | function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
| // ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------ | LineComment | v0.4.18+commit.9cf6e910 | bzzr://4384b8deba2e746c2d0ffd6d445724c75aa5caf146cde2d6dfcf26b9c44fbab9 | {
"func_code_index": [
4478,
4795
]
} | 59,431 |
|
QuarkChain | QuarkChain.sol | 0x49358a824c66b64a2f0c8bb3c99dd73586afab16 | Solidity | QuarkChain | contract QuarkChain is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function QuarkChain() public {
symbol = "QKC";
name = "QuarkChain";
decimals = 18;
_totalSupply = 10000000000000000000000000000;
balances[0x8907a6757AfcA5276Cfca544671e9AAA98AbE2be] = _totalSupply;
Transfer(address(0), 0x8907a6757AfcA5276Cfca544671e9AAA98AbE2be, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
} | // ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ---------------------------------------------------------------------------- | LineComment | function () public payable {
revert();
}
| // ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------ | LineComment | v0.4.18+commit.9cf6e910 | bzzr://4384b8deba2e746c2d0ffd6d445724c75aa5caf146cde2d6dfcf26b9c44fbab9 | {
"func_code_index": [
4987,
5046
]
} | 59,432 |
||
QuarkChain | QuarkChain.sol | 0x49358a824c66b64a2f0c8bb3c99dd73586afab16 | Solidity | QuarkChain | contract QuarkChain is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function QuarkChain() public {
symbol = "QKC";
name = "QuarkChain";
decimals = 18;
_totalSupply = 10000000000000000000000000000;
balances[0x8907a6757AfcA5276Cfca544671e9AAA98AbE2be] = _totalSupply;
Transfer(address(0), 0x8907a6757AfcA5276Cfca544671e9AAA98AbE2be, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
} | // ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ---------------------------------------------------------------------------- | LineComment | transferAnyERC20Token | function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
| // ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------ | LineComment | v0.4.18+commit.9cf6e910 | bzzr://4384b8deba2e746c2d0ffd6d445724c75aa5caf146cde2d6dfcf26b9c44fbab9 | {
"func_code_index": [
5279,
5468
]
} | 59,433 |
|
PonziTokenH3H3 | PonziTokenH3H3.sol | 0x04129cff7d79a652256c73b1407f34828e79a4de | Solidity | PonziTokenH3H3 | contract PonziTokenH3H3 {
uint256 constant PRECISION = 0x10000000000000000; // 2^64
// CRR = 80 %
int constant CRRN = 1;
int constant CRRD = 2;
// The price coefficient. Chosen such that at 1 token total supply
// the reserve is 0.8 ether and price 1 ether/token.
int constant LOGC = -0x296ABF784A358468C;
string constant public name = "h3h3 infinite money coin";
string constant public symbol = "H3H3";
uint8 constant public decimals = 18;
uint256 public totalSupply;
// amount of shares for each address (scaled number)
mapping(address => uint256) public balanceOfOld;
// allowance map, see erc20
mapping(address => mapping(address => uint256)) public allowance;
// amount payed out for each address (scaled number)
mapping(address => int256) payouts;
// sum of all payouts (scaled number)
int256 totalPayouts;
// amount earned for each share (scaled number)
uint256 earningsPerShare;
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
//address owner;
function PonziTokenH3H3() public {
//owner = msg.sender;
}
// These are functions solely created to appease the frontend
function balanceOf(address _owner) public constant returns (uint256 balance) {
return balanceOfOld[_owner];
}
function withdraw(uint tokenCount) // the parameter is ignored, yes
public
returns (bool)
{
var balance = dividends(msg.sender);
payouts[msg.sender] += (int256) (balance * PRECISION);
totalPayouts += (int256) (balance * PRECISION);
msg.sender.transfer(balance);
return true;
}
function sellMyTokensElixir() public {
var balance = balanceOf(msg.sender);
transferTokens(msg.sender, address(this), balance); // this triggers the internal sell function
}
function getMeOutOfHere() public {
sellMyTokensElixir();
withdraw(1); // parameter is ignored
}
function fund()
public
payable
returns (bool)
{
if (msg.value > 0.000001 ether)
buy();
else
return false;
return true;
}
function buyPrice() public constant returns (uint) {
return getTokensForEther(1 finney);
}
function sellPrice() public constant returns (uint) {
return getEtherForTokens(1 finney);
}
// End of useless functions
// Invariants
// totalPayout/Supply correct:
// totalPayouts = \sum_{addr:address} payouts(addr)
// totalSupply = \sum_{addr:address} balanceOfOld(addr)
// dividends not negative:
// \forall addr:address. payouts[addr] <= earningsPerShare * balanceOfOld[addr]
// supply/reserve correlation:
// totalSupply ~= exp(LOGC + CRRN/CRRD*log(reserve())
// i.e. totalSupply = C * reserve()**CRR
// reserve equals balance minus payouts
// reserve() = this.balance - \sum_{addr:address} dividends(addr)
function transferTokens(address _from, address _to, uint256 _value) internal {
if (balanceOfOld[_from] < _value)
revert();
if (_to == address(this)) {
sell(_value);
} else {
int256 payoutDiff = (int256) (earningsPerShare * _value);
balanceOfOld[_from] -= _value;
balanceOfOld[_to] += _value;
payouts[_from] -= payoutDiff;
payouts[_to] += payoutDiff;
}
Transfer(_from, _to, _value);
}
function transfer(address _to, uint256 _value) public {
transferTokens(msg.sender, _to, _value);
}
function transferFrom(address _from, address _to, uint256 _value) public {
var _allowance = allowance[_from][msg.sender];
if (_allowance < _value)
revert();
allowance[_from][msg.sender] = _allowance - _value;
transferTokens(_from, _to, _value);
}
function approve(address _spender, uint256 _value) public {
// To change the approve amount you first have to reduce the addresses`
// allowance to zero by calling `approve(_spender, 0)` if it is not
// already 0 to mitigate the race condition described here:
// https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
if ((_value != 0) && (allowance[msg.sender][_spender] != 0)) revert();
allowance[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
}
function dividends(address _owner) public constant returns (uint256 amount) {
return (uint256) ((int256)(earningsPerShare * balanceOfOld[_owner]) - payouts[_owner]) / PRECISION;
}
function withdrawOld(address to) public {
var balance = dividends(msg.sender);
payouts[msg.sender] += (int256) (balance * PRECISION);
totalPayouts += (int256) (balance * PRECISION);
to.transfer(balance);
}
function balance() internal constant returns (uint256 amount) {
return this.balance - msg.value;
}
function reserve() public constant returns (uint256 amount) {
return balance()
- ((uint256) ((int256) (earningsPerShare * totalSupply) - totalPayouts) / PRECISION) - 1;
}
function buy() internal {
if (msg.value < 0.000001 ether || msg.value > 1000000 ether)
revert();
var sender = msg.sender;
// 5 % of the amount is used to pay holders.
var fee = (uint)(msg.value / 10);
// compute number of bought tokens
var numEther = msg.value - fee;
var numTokens = getTokensForEther(numEther);
var buyerfee = fee * PRECISION;
if (totalSupply > 0) {
// compute how the fee distributed to previous holders and buyer.
// The buyer already gets a part of the fee as if he would buy each token separately.
var holderreward =
(PRECISION - (reserve() + numEther) * numTokens * PRECISION / (totalSupply + numTokens) / numEther)
* (uint)(CRRD) / (uint)(CRRD-CRRN);
var holderfee = fee * holderreward;
buyerfee -= holderfee;
// Fee is distributed to all existing tokens before buying
var feePerShare = holderfee / totalSupply;
earningsPerShare += feePerShare;
}
// add numTokens to total supply
totalSupply += numTokens;
// add numTokens to balance
balanceOfOld[sender] += numTokens;
// fix payouts so that sender doesn't get old earnings for the new tokens.
// also add its buyerfee
var payoutDiff = (int256) ((earningsPerShare * numTokens) - buyerfee);
payouts[sender] += payoutDiff;
totalPayouts += payoutDiff;
}
function sell(uint256 amount) internal {
var numEthers = getEtherForTokens(amount);
// remove tokens
totalSupply -= amount;
balanceOfOld[msg.sender] -= amount;
// fix payouts and put the ethers in payout
var payoutDiff = (int256) (earningsPerShare * amount + (numEthers * PRECISION));
payouts[msg.sender] -= payoutDiff;
totalPayouts -= payoutDiff;
}
function getTokensForEther(uint256 ethervalue) public constant returns (uint256 tokens) {
return fixedExp(fixedLog(reserve() + ethervalue)*CRRN/CRRD + LOGC) - totalSupply;
}
function getEtherForTokens(uint256 tokens) public constant returns (uint256 ethervalue) {
if (tokens == totalSupply)
return reserve();
return reserve() - fixedExp((fixedLog(totalSupply - tokens) - LOGC) * CRRD/CRRN);
}
int256 constant one = 0x10000000000000000;
uint256 constant sqrt2 = 0x16a09e667f3bcc908;
uint256 constant sqrtdot5 = 0x0b504f333f9de6484;
int256 constant ln2 = 0x0b17217f7d1cf79ac;
int256 constant ln2_64dot5= 0x2cb53f09f05cc627c8;
int256 constant c1 = 0x1ffffffffff9dac9b;
int256 constant c3 = 0x0aaaaaaac16877908;
int256 constant c5 = 0x0666664e5e9fa0c99;
int256 constant c7 = 0x049254026a7630acf;
int256 constant c9 = 0x038bd75ed37753d68;
int256 constant c11 = 0x03284a0c14610924f;
function fixedLog(uint256 a) internal pure returns (int256 log) {
int32 scale = 0;
while (a > sqrt2) {
a /= 2;
scale++;
}
while (a <= sqrtdot5) {
a *= 2;
scale--;
}
int256 s = (((int256)(a) - one) * one) / ((int256)(a) + one);
// The polynomial R = c1*x + c3*x^3 + ... + c11 * x^11
// approximates the function log(1+x)-log(1-x)
// Hence R(s) = log((1+s)/(1-s)) = log(a)
var z = (s*s) / one;
return scale * ln2 +
(s*(c1 + (z*(c3 + (z*(c5 + (z*(c7 + (z*(c9 + (z*c11/one))
/one))/one))/one))/one))/one);
}
int256 constant c2 = 0x02aaaaaaaaa015db0;
int256 constant c4 = -0x000b60b60808399d1;
int256 constant c6 = 0x0000455956bccdd06;
int256 constant c8 = -0x000001b893ad04b3a;
function fixedExp(int256 a) internal pure returns (uint256 exp) {
int256 scale = (a + (ln2_64dot5)) / ln2 - 64;
a -= scale*ln2;
// The polynomial R = 2 + c2*x^2 + c4*x^4 + ...
// approximates the function x*(exp(x)+1)/(exp(x)-1)
// Hence exp(x) = (R(x)+x)/(R(x)-x)
int256 z = (a*a) / one;
int256 R = ((int256)(2) * one) +
(z*(c2 + (z*(c4 + (z*(c6 + (z*c8/one))/one))/one))/one);
exp = (uint256) (((R + a) * one) / (R - a));
if (scale >= 0)
exp <<= scale;
else
exp >>= -scale;
return exp;
}
/*function destroy() external {
selfdestruct(owner);
}*/
function () payable public {
if (msg.value > 0)
buy();
else
withdrawOld(msg.sender);
}
} | // If you wanna escape this contract REALLY FAST
// 1. open MEW/METAMASK
// 2. Put this as data: 0xb1e35242
// 3. send 150000+ gas
// That calls the getMeOutOfHere() method
// 10% fees, price goes up crazy fast | LineComment | PonziTokenH3H3 | function PonziTokenH3H3() public {
//owner = msg.sender;
}
| //address owner; | LineComment | v0.4.19+commit.c4cbbb05 | bzzr://4bfe40108e4f452e57a17955c1ee99cad6f9e0cc499743ecf31e33756e0a06e6 | {
"func_code_index": [
1119,
1184
]
} | 59,434 |
|
PonziTokenH3H3 | PonziTokenH3H3.sol | 0x04129cff7d79a652256c73b1407f34828e79a4de | Solidity | PonziTokenH3H3 | contract PonziTokenH3H3 {
uint256 constant PRECISION = 0x10000000000000000; // 2^64
// CRR = 80 %
int constant CRRN = 1;
int constant CRRD = 2;
// The price coefficient. Chosen such that at 1 token total supply
// the reserve is 0.8 ether and price 1 ether/token.
int constant LOGC = -0x296ABF784A358468C;
string constant public name = "h3h3 infinite money coin";
string constant public symbol = "H3H3";
uint8 constant public decimals = 18;
uint256 public totalSupply;
// amount of shares for each address (scaled number)
mapping(address => uint256) public balanceOfOld;
// allowance map, see erc20
mapping(address => mapping(address => uint256)) public allowance;
// amount payed out for each address (scaled number)
mapping(address => int256) payouts;
// sum of all payouts (scaled number)
int256 totalPayouts;
// amount earned for each share (scaled number)
uint256 earningsPerShare;
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
//address owner;
function PonziTokenH3H3() public {
//owner = msg.sender;
}
// These are functions solely created to appease the frontend
function balanceOf(address _owner) public constant returns (uint256 balance) {
return balanceOfOld[_owner];
}
function withdraw(uint tokenCount) // the parameter is ignored, yes
public
returns (bool)
{
var balance = dividends(msg.sender);
payouts[msg.sender] += (int256) (balance * PRECISION);
totalPayouts += (int256) (balance * PRECISION);
msg.sender.transfer(balance);
return true;
}
function sellMyTokensElixir() public {
var balance = balanceOf(msg.sender);
transferTokens(msg.sender, address(this), balance); // this triggers the internal sell function
}
function getMeOutOfHere() public {
sellMyTokensElixir();
withdraw(1); // parameter is ignored
}
function fund()
public
payable
returns (bool)
{
if (msg.value > 0.000001 ether)
buy();
else
return false;
return true;
}
function buyPrice() public constant returns (uint) {
return getTokensForEther(1 finney);
}
function sellPrice() public constant returns (uint) {
return getEtherForTokens(1 finney);
}
// End of useless functions
// Invariants
// totalPayout/Supply correct:
// totalPayouts = \sum_{addr:address} payouts(addr)
// totalSupply = \sum_{addr:address} balanceOfOld(addr)
// dividends not negative:
// \forall addr:address. payouts[addr] <= earningsPerShare * balanceOfOld[addr]
// supply/reserve correlation:
// totalSupply ~= exp(LOGC + CRRN/CRRD*log(reserve())
// i.e. totalSupply = C * reserve()**CRR
// reserve equals balance minus payouts
// reserve() = this.balance - \sum_{addr:address} dividends(addr)
function transferTokens(address _from, address _to, uint256 _value) internal {
if (balanceOfOld[_from] < _value)
revert();
if (_to == address(this)) {
sell(_value);
} else {
int256 payoutDiff = (int256) (earningsPerShare * _value);
balanceOfOld[_from] -= _value;
balanceOfOld[_to] += _value;
payouts[_from] -= payoutDiff;
payouts[_to] += payoutDiff;
}
Transfer(_from, _to, _value);
}
function transfer(address _to, uint256 _value) public {
transferTokens(msg.sender, _to, _value);
}
function transferFrom(address _from, address _to, uint256 _value) public {
var _allowance = allowance[_from][msg.sender];
if (_allowance < _value)
revert();
allowance[_from][msg.sender] = _allowance - _value;
transferTokens(_from, _to, _value);
}
function approve(address _spender, uint256 _value) public {
// To change the approve amount you first have to reduce the addresses`
// allowance to zero by calling `approve(_spender, 0)` if it is not
// already 0 to mitigate the race condition described here:
// https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
if ((_value != 0) && (allowance[msg.sender][_spender] != 0)) revert();
allowance[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
}
function dividends(address _owner) public constant returns (uint256 amount) {
return (uint256) ((int256)(earningsPerShare * balanceOfOld[_owner]) - payouts[_owner]) / PRECISION;
}
function withdrawOld(address to) public {
var balance = dividends(msg.sender);
payouts[msg.sender] += (int256) (balance * PRECISION);
totalPayouts += (int256) (balance * PRECISION);
to.transfer(balance);
}
function balance() internal constant returns (uint256 amount) {
return this.balance - msg.value;
}
function reserve() public constant returns (uint256 amount) {
return balance()
- ((uint256) ((int256) (earningsPerShare * totalSupply) - totalPayouts) / PRECISION) - 1;
}
function buy() internal {
if (msg.value < 0.000001 ether || msg.value > 1000000 ether)
revert();
var sender = msg.sender;
// 5 % of the amount is used to pay holders.
var fee = (uint)(msg.value / 10);
// compute number of bought tokens
var numEther = msg.value - fee;
var numTokens = getTokensForEther(numEther);
var buyerfee = fee * PRECISION;
if (totalSupply > 0) {
// compute how the fee distributed to previous holders and buyer.
// The buyer already gets a part of the fee as if he would buy each token separately.
var holderreward =
(PRECISION - (reserve() + numEther) * numTokens * PRECISION / (totalSupply + numTokens) / numEther)
* (uint)(CRRD) / (uint)(CRRD-CRRN);
var holderfee = fee * holderreward;
buyerfee -= holderfee;
// Fee is distributed to all existing tokens before buying
var feePerShare = holderfee / totalSupply;
earningsPerShare += feePerShare;
}
// add numTokens to total supply
totalSupply += numTokens;
// add numTokens to balance
balanceOfOld[sender] += numTokens;
// fix payouts so that sender doesn't get old earnings for the new tokens.
// also add its buyerfee
var payoutDiff = (int256) ((earningsPerShare * numTokens) - buyerfee);
payouts[sender] += payoutDiff;
totalPayouts += payoutDiff;
}
function sell(uint256 amount) internal {
var numEthers = getEtherForTokens(amount);
// remove tokens
totalSupply -= amount;
balanceOfOld[msg.sender] -= amount;
// fix payouts and put the ethers in payout
var payoutDiff = (int256) (earningsPerShare * amount + (numEthers * PRECISION));
payouts[msg.sender] -= payoutDiff;
totalPayouts -= payoutDiff;
}
function getTokensForEther(uint256 ethervalue) public constant returns (uint256 tokens) {
return fixedExp(fixedLog(reserve() + ethervalue)*CRRN/CRRD + LOGC) - totalSupply;
}
function getEtherForTokens(uint256 tokens) public constant returns (uint256 ethervalue) {
if (tokens == totalSupply)
return reserve();
return reserve() - fixedExp((fixedLog(totalSupply - tokens) - LOGC) * CRRD/CRRN);
}
int256 constant one = 0x10000000000000000;
uint256 constant sqrt2 = 0x16a09e667f3bcc908;
uint256 constant sqrtdot5 = 0x0b504f333f9de6484;
int256 constant ln2 = 0x0b17217f7d1cf79ac;
int256 constant ln2_64dot5= 0x2cb53f09f05cc627c8;
int256 constant c1 = 0x1ffffffffff9dac9b;
int256 constant c3 = 0x0aaaaaaac16877908;
int256 constant c5 = 0x0666664e5e9fa0c99;
int256 constant c7 = 0x049254026a7630acf;
int256 constant c9 = 0x038bd75ed37753d68;
int256 constant c11 = 0x03284a0c14610924f;
function fixedLog(uint256 a) internal pure returns (int256 log) {
int32 scale = 0;
while (a > sqrt2) {
a /= 2;
scale++;
}
while (a <= sqrtdot5) {
a *= 2;
scale--;
}
int256 s = (((int256)(a) - one) * one) / ((int256)(a) + one);
// The polynomial R = c1*x + c3*x^3 + ... + c11 * x^11
// approximates the function log(1+x)-log(1-x)
// Hence R(s) = log((1+s)/(1-s)) = log(a)
var z = (s*s) / one;
return scale * ln2 +
(s*(c1 + (z*(c3 + (z*(c5 + (z*(c7 + (z*(c9 + (z*c11/one))
/one))/one))/one))/one))/one);
}
int256 constant c2 = 0x02aaaaaaaaa015db0;
int256 constant c4 = -0x000b60b60808399d1;
int256 constant c6 = 0x0000455956bccdd06;
int256 constant c8 = -0x000001b893ad04b3a;
function fixedExp(int256 a) internal pure returns (uint256 exp) {
int256 scale = (a + (ln2_64dot5)) / ln2 - 64;
a -= scale*ln2;
// The polynomial R = 2 + c2*x^2 + c4*x^4 + ...
// approximates the function x*(exp(x)+1)/(exp(x)-1)
// Hence exp(x) = (R(x)+x)/(R(x)-x)
int256 z = (a*a) / one;
int256 R = ((int256)(2) * one) +
(z*(c2 + (z*(c4 + (z*(c6 + (z*c8/one))/one))/one))/one);
exp = (uint256) (((R + a) * one) / (R - a));
if (scale >= 0)
exp <<= scale;
else
exp >>= -scale;
return exp;
}
/*function destroy() external {
selfdestruct(owner);
}*/
function () payable public {
if (msg.value > 0)
buy();
else
withdrawOld(msg.sender);
}
} | // If you wanna escape this contract REALLY FAST
// 1. open MEW/METAMASK
// 2. Put this as data: 0xb1e35242
// 3. send 150000+ gas
// That calls the getMeOutOfHere() method
// 10% fees, price goes up crazy fast | LineComment | balanceOf | function balanceOf(address _owner) public constant returns (uint256 balance) {
return balanceOfOld[_owner];
}
| // These are functions solely created to appease the frontend | LineComment | v0.4.19+commit.c4cbbb05 | bzzr://4bfe40108e4f452e57a17955c1ee99cad6f9e0cc499743ecf31e33756e0a06e6 | {
"func_code_index": [
1252,
1377
]
} | 59,435 |
|
PonziTokenH3H3 | PonziTokenH3H3.sol | 0x04129cff7d79a652256c73b1407f34828e79a4de | Solidity | PonziTokenH3H3 | contract PonziTokenH3H3 {
uint256 constant PRECISION = 0x10000000000000000; // 2^64
// CRR = 80 %
int constant CRRN = 1;
int constant CRRD = 2;
// The price coefficient. Chosen such that at 1 token total supply
// the reserve is 0.8 ether and price 1 ether/token.
int constant LOGC = -0x296ABF784A358468C;
string constant public name = "h3h3 infinite money coin";
string constant public symbol = "H3H3";
uint8 constant public decimals = 18;
uint256 public totalSupply;
// amount of shares for each address (scaled number)
mapping(address => uint256) public balanceOfOld;
// allowance map, see erc20
mapping(address => mapping(address => uint256)) public allowance;
// amount payed out for each address (scaled number)
mapping(address => int256) payouts;
// sum of all payouts (scaled number)
int256 totalPayouts;
// amount earned for each share (scaled number)
uint256 earningsPerShare;
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
//address owner;
function PonziTokenH3H3() public {
//owner = msg.sender;
}
// These are functions solely created to appease the frontend
function balanceOf(address _owner) public constant returns (uint256 balance) {
return balanceOfOld[_owner];
}
function withdraw(uint tokenCount) // the parameter is ignored, yes
public
returns (bool)
{
var balance = dividends(msg.sender);
payouts[msg.sender] += (int256) (balance * PRECISION);
totalPayouts += (int256) (balance * PRECISION);
msg.sender.transfer(balance);
return true;
}
function sellMyTokensElixir() public {
var balance = balanceOf(msg.sender);
transferTokens(msg.sender, address(this), balance); // this triggers the internal sell function
}
function getMeOutOfHere() public {
sellMyTokensElixir();
withdraw(1); // parameter is ignored
}
function fund()
public
payable
returns (bool)
{
if (msg.value > 0.000001 ether)
buy();
else
return false;
return true;
}
function buyPrice() public constant returns (uint) {
return getTokensForEther(1 finney);
}
function sellPrice() public constant returns (uint) {
return getEtherForTokens(1 finney);
}
// End of useless functions
// Invariants
// totalPayout/Supply correct:
// totalPayouts = \sum_{addr:address} payouts(addr)
// totalSupply = \sum_{addr:address} balanceOfOld(addr)
// dividends not negative:
// \forall addr:address. payouts[addr] <= earningsPerShare * balanceOfOld[addr]
// supply/reserve correlation:
// totalSupply ~= exp(LOGC + CRRN/CRRD*log(reserve())
// i.e. totalSupply = C * reserve()**CRR
// reserve equals balance minus payouts
// reserve() = this.balance - \sum_{addr:address} dividends(addr)
function transferTokens(address _from, address _to, uint256 _value) internal {
if (balanceOfOld[_from] < _value)
revert();
if (_to == address(this)) {
sell(_value);
} else {
int256 payoutDiff = (int256) (earningsPerShare * _value);
balanceOfOld[_from] -= _value;
balanceOfOld[_to] += _value;
payouts[_from] -= payoutDiff;
payouts[_to] += payoutDiff;
}
Transfer(_from, _to, _value);
}
function transfer(address _to, uint256 _value) public {
transferTokens(msg.sender, _to, _value);
}
function transferFrom(address _from, address _to, uint256 _value) public {
var _allowance = allowance[_from][msg.sender];
if (_allowance < _value)
revert();
allowance[_from][msg.sender] = _allowance - _value;
transferTokens(_from, _to, _value);
}
function approve(address _spender, uint256 _value) public {
// To change the approve amount you first have to reduce the addresses`
// allowance to zero by calling `approve(_spender, 0)` if it is not
// already 0 to mitigate the race condition described here:
// https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
if ((_value != 0) && (allowance[msg.sender][_spender] != 0)) revert();
allowance[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
}
function dividends(address _owner) public constant returns (uint256 amount) {
return (uint256) ((int256)(earningsPerShare * balanceOfOld[_owner]) - payouts[_owner]) / PRECISION;
}
function withdrawOld(address to) public {
var balance = dividends(msg.sender);
payouts[msg.sender] += (int256) (balance * PRECISION);
totalPayouts += (int256) (balance * PRECISION);
to.transfer(balance);
}
function balance() internal constant returns (uint256 amount) {
return this.balance - msg.value;
}
function reserve() public constant returns (uint256 amount) {
return balance()
- ((uint256) ((int256) (earningsPerShare * totalSupply) - totalPayouts) / PRECISION) - 1;
}
function buy() internal {
if (msg.value < 0.000001 ether || msg.value > 1000000 ether)
revert();
var sender = msg.sender;
// 5 % of the amount is used to pay holders.
var fee = (uint)(msg.value / 10);
// compute number of bought tokens
var numEther = msg.value - fee;
var numTokens = getTokensForEther(numEther);
var buyerfee = fee * PRECISION;
if (totalSupply > 0) {
// compute how the fee distributed to previous holders and buyer.
// The buyer already gets a part of the fee as if he would buy each token separately.
var holderreward =
(PRECISION - (reserve() + numEther) * numTokens * PRECISION / (totalSupply + numTokens) / numEther)
* (uint)(CRRD) / (uint)(CRRD-CRRN);
var holderfee = fee * holderreward;
buyerfee -= holderfee;
// Fee is distributed to all existing tokens before buying
var feePerShare = holderfee / totalSupply;
earningsPerShare += feePerShare;
}
// add numTokens to total supply
totalSupply += numTokens;
// add numTokens to balance
balanceOfOld[sender] += numTokens;
// fix payouts so that sender doesn't get old earnings for the new tokens.
// also add its buyerfee
var payoutDiff = (int256) ((earningsPerShare * numTokens) - buyerfee);
payouts[sender] += payoutDiff;
totalPayouts += payoutDiff;
}
function sell(uint256 amount) internal {
var numEthers = getEtherForTokens(amount);
// remove tokens
totalSupply -= amount;
balanceOfOld[msg.sender] -= amount;
// fix payouts and put the ethers in payout
var payoutDiff = (int256) (earningsPerShare * amount + (numEthers * PRECISION));
payouts[msg.sender] -= payoutDiff;
totalPayouts -= payoutDiff;
}
function getTokensForEther(uint256 ethervalue) public constant returns (uint256 tokens) {
return fixedExp(fixedLog(reserve() + ethervalue)*CRRN/CRRD + LOGC) - totalSupply;
}
function getEtherForTokens(uint256 tokens) public constant returns (uint256 ethervalue) {
if (tokens == totalSupply)
return reserve();
return reserve() - fixedExp((fixedLog(totalSupply - tokens) - LOGC) * CRRD/CRRN);
}
int256 constant one = 0x10000000000000000;
uint256 constant sqrt2 = 0x16a09e667f3bcc908;
uint256 constant sqrtdot5 = 0x0b504f333f9de6484;
int256 constant ln2 = 0x0b17217f7d1cf79ac;
int256 constant ln2_64dot5= 0x2cb53f09f05cc627c8;
int256 constant c1 = 0x1ffffffffff9dac9b;
int256 constant c3 = 0x0aaaaaaac16877908;
int256 constant c5 = 0x0666664e5e9fa0c99;
int256 constant c7 = 0x049254026a7630acf;
int256 constant c9 = 0x038bd75ed37753d68;
int256 constant c11 = 0x03284a0c14610924f;
function fixedLog(uint256 a) internal pure returns (int256 log) {
int32 scale = 0;
while (a > sqrt2) {
a /= 2;
scale++;
}
while (a <= sqrtdot5) {
a *= 2;
scale--;
}
int256 s = (((int256)(a) - one) * one) / ((int256)(a) + one);
// The polynomial R = c1*x + c3*x^3 + ... + c11 * x^11
// approximates the function log(1+x)-log(1-x)
// Hence R(s) = log((1+s)/(1-s)) = log(a)
var z = (s*s) / one;
return scale * ln2 +
(s*(c1 + (z*(c3 + (z*(c5 + (z*(c7 + (z*(c9 + (z*c11/one))
/one))/one))/one))/one))/one);
}
int256 constant c2 = 0x02aaaaaaaaa015db0;
int256 constant c4 = -0x000b60b60808399d1;
int256 constant c6 = 0x0000455956bccdd06;
int256 constant c8 = -0x000001b893ad04b3a;
function fixedExp(int256 a) internal pure returns (uint256 exp) {
int256 scale = (a + (ln2_64dot5)) / ln2 - 64;
a -= scale*ln2;
// The polynomial R = 2 + c2*x^2 + c4*x^4 + ...
// approximates the function x*(exp(x)+1)/(exp(x)-1)
// Hence exp(x) = (R(x)+x)/(R(x)-x)
int256 z = (a*a) / one;
int256 R = ((int256)(2) * one) +
(z*(c2 + (z*(c4 + (z*(c6 + (z*c8/one))/one))/one))/one);
exp = (uint256) (((R + a) * one) / (R - a));
if (scale >= 0)
exp <<= scale;
else
exp >>= -scale;
return exp;
}
/*function destroy() external {
selfdestruct(owner);
}*/
function () payable public {
if (msg.value > 0)
buy();
else
withdrawOld(msg.sender);
}
} | // If you wanna escape this contract REALLY FAST
// 1. open MEW/METAMASK
// 2. Put this as data: 0xb1e35242
// 3. send 150000+ gas
// That calls the getMeOutOfHere() method
// 10% fees, price goes up crazy fast | LineComment | transferTokens | function transferTokens(address _from, address _to, uint256 _value) internal {
if (balanceOfOld[_from] < _value)
revert();
if (_to == address(this)) {
sell(_value);
} else {
int256 payoutDiff = (int256) (earningsPerShare * _value);
balanceOfOld[_from] -= _value;
balanceOfOld[_to] += _value;
payouts[_from] -= payoutDiff;
payouts[_to] += payoutDiff;
}
Transfer(_from, _to, _value);
}
| // End of useless functions
// Invariants
// totalPayout/Supply correct:
// totalPayouts = \sum_{addr:address} payouts(addr)
// totalSupply = \sum_{addr:address} balanceOfOld(addr)
// dividends not negative:
// \forall addr:address. payouts[addr] <= earningsPerShare * balanceOfOld[addr]
// supply/reserve correlation:
// totalSupply ~= exp(LOGC + CRRN/CRRD*log(reserve())
// i.e. totalSupply = C * reserve()**CRR
// reserve equals balance minus payouts
// reserve() = this.balance - \sum_{addr:address} dividends(addr) | LineComment | v0.4.19+commit.c4cbbb05 | bzzr://4bfe40108e4f452e57a17955c1ee99cad6f9e0cc499743ecf31e33756e0a06e6 | {
"func_code_index": [
2956,
3401
]
} | 59,436 |
|
PonziTokenH3H3 | PonziTokenH3H3.sol | 0x04129cff7d79a652256c73b1407f34828e79a4de | Solidity | PonziTokenH3H3 | contract PonziTokenH3H3 {
uint256 constant PRECISION = 0x10000000000000000; // 2^64
// CRR = 80 %
int constant CRRN = 1;
int constant CRRD = 2;
// The price coefficient. Chosen such that at 1 token total supply
// the reserve is 0.8 ether and price 1 ether/token.
int constant LOGC = -0x296ABF784A358468C;
string constant public name = "h3h3 infinite money coin";
string constant public symbol = "H3H3";
uint8 constant public decimals = 18;
uint256 public totalSupply;
// amount of shares for each address (scaled number)
mapping(address => uint256) public balanceOfOld;
// allowance map, see erc20
mapping(address => mapping(address => uint256)) public allowance;
// amount payed out for each address (scaled number)
mapping(address => int256) payouts;
// sum of all payouts (scaled number)
int256 totalPayouts;
// amount earned for each share (scaled number)
uint256 earningsPerShare;
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
//address owner;
function PonziTokenH3H3() public {
//owner = msg.sender;
}
// These are functions solely created to appease the frontend
function balanceOf(address _owner) public constant returns (uint256 balance) {
return balanceOfOld[_owner];
}
function withdraw(uint tokenCount) // the parameter is ignored, yes
public
returns (bool)
{
var balance = dividends(msg.sender);
payouts[msg.sender] += (int256) (balance * PRECISION);
totalPayouts += (int256) (balance * PRECISION);
msg.sender.transfer(balance);
return true;
}
function sellMyTokensElixir() public {
var balance = balanceOf(msg.sender);
transferTokens(msg.sender, address(this), balance); // this triggers the internal sell function
}
function getMeOutOfHere() public {
sellMyTokensElixir();
withdraw(1); // parameter is ignored
}
function fund()
public
payable
returns (bool)
{
if (msg.value > 0.000001 ether)
buy();
else
return false;
return true;
}
function buyPrice() public constant returns (uint) {
return getTokensForEther(1 finney);
}
function sellPrice() public constant returns (uint) {
return getEtherForTokens(1 finney);
}
// End of useless functions
// Invariants
// totalPayout/Supply correct:
// totalPayouts = \sum_{addr:address} payouts(addr)
// totalSupply = \sum_{addr:address} balanceOfOld(addr)
// dividends not negative:
// \forall addr:address. payouts[addr] <= earningsPerShare * balanceOfOld[addr]
// supply/reserve correlation:
// totalSupply ~= exp(LOGC + CRRN/CRRD*log(reserve())
// i.e. totalSupply = C * reserve()**CRR
// reserve equals balance minus payouts
// reserve() = this.balance - \sum_{addr:address} dividends(addr)
function transferTokens(address _from, address _to, uint256 _value) internal {
if (balanceOfOld[_from] < _value)
revert();
if (_to == address(this)) {
sell(_value);
} else {
int256 payoutDiff = (int256) (earningsPerShare * _value);
balanceOfOld[_from] -= _value;
balanceOfOld[_to] += _value;
payouts[_from] -= payoutDiff;
payouts[_to] += payoutDiff;
}
Transfer(_from, _to, _value);
}
function transfer(address _to, uint256 _value) public {
transferTokens(msg.sender, _to, _value);
}
function transferFrom(address _from, address _to, uint256 _value) public {
var _allowance = allowance[_from][msg.sender];
if (_allowance < _value)
revert();
allowance[_from][msg.sender] = _allowance - _value;
transferTokens(_from, _to, _value);
}
function approve(address _spender, uint256 _value) public {
// To change the approve amount you first have to reduce the addresses`
// allowance to zero by calling `approve(_spender, 0)` if it is not
// already 0 to mitigate the race condition described here:
// https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
if ((_value != 0) && (allowance[msg.sender][_spender] != 0)) revert();
allowance[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
}
function dividends(address _owner) public constant returns (uint256 amount) {
return (uint256) ((int256)(earningsPerShare * balanceOfOld[_owner]) - payouts[_owner]) / PRECISION;
}
function withdrawOld(address to) public {
var balance = dividends(msg.sender);
payouts[msg.sender] += (int256) (balance * PRECISION);
totalPayouts += (int256) (balance * PRECISION);
to.transfer(balance);
}
function balance() internal constant returns (uint256 amount) {
return this.balance - msg.value;
}
function reserve() public constant returns (uint256 amount) {
return balance()
- ((uint256) ((int256) (earningsPerShare * totalSupply) - totalPayouts) / PRECISION) - 1;
}
function buy() internal {
if (msg.value < 0.000001 ether || msg.value > 1000000 ether)
revert();
var sender = msg.sender;
// 5 % of the amount is used to pay holders.
var fee = (uint)(msg.value / 10);
// compute number of bought tokens
var numEther = msg.value - fee;
var numTokens = getTokensForEther(numEther);
var buyerfee = fee * PRECISION;
if (totalSupply > 0) {
// compute how the fee distributed to previous holders and buyer.
// The buyer already gets a part of the fee as if he would buy each token separately.
var holderreward =
(PRECISION - (reserve() + numEther) * numTokens * PRECISION / (totalSupply + numTokens) / numEther)
* (uint)(CRRD) / (uint)(CRRD-CRRN);
var holderfee = fee * holderreward;
buyerfee -= holderfee;
// Fee is distributed to all existing tokens before buying
var feePerShare = holderfee / totalSupply;
earningsPerShare += feePerShare;
}
// add numTokens to total supply
totalSupply += numTokens;
// add numTokens to balance
balanceOfOld[sender] += numTokens;
// fix payouts so that sender doesn't get old earnings for the new tokens.
// also add its buyerfee
var payoutDiff = (int256) ((earningsPerShare * numTokens) - buyerfee);
payouts[sender] += payoutDiff;
totalPayouts += payoutDiff;
}
function sell(uint256 amount) internal {
var numEthers = getEtherForTokens(amount);
// remove tokens
totalSupply -= amount;
balanceOfOld[msg.sender] -= amount;
// fix payouts and put the ethers in payout
var payoutDiff = (int256) (earningsPerShare * amount + (numEthers * PRECISION));
payouts[msg.sender] -= payoutDiff;
totalPayouts -= payoutDiff;
}
function getTokensForEther(uint256 ethervalue) public constant returns (uint256 tokens) {
return fixedExp(fixedLog(reserve() + ethervalue)*CRRN/CRRD + LOGC) - totalSupply;
}
function getEtherForTokens(uint256 tokens) public constant returns (uint256 ethervalue) {
if (tokens == totalSupply)
return reserve();
return reserve() - fixedExp((fixedLog(totalSupply - tokens) - LOGC) * CRRD/CRRN);
}
int256 constant one = 0x10000000000000000;
uint256 constant sqrt2 = 0x16a09e667f3bcc908;
uint256 constant sqrtdot5 = 0x0b504f333f9de6484;
int256 constant ln2 = 0x0b17217f7d1cf79ac;
int256 constant ln2_64dot5= 0x2cb53f09f05cc627c8;
int256 constant c1 = 0x1ffffffffff9dac9b;
int256 constant c3 = 0x0aaaaaaac16877908;
int256 constant c5 = 0x0666664e5e9fa0c99;
int256 constant c7 = 0x049254026a7630acf;
int256 constant c9 = 0x038bd75ed37753d68;
int256 constant c11 = 0x03284a0c14610924f;
function fixedLog(uint256 a) internal pure returns (int256 log) {
int32 scale = 0;
while (a > sqrt2) {
a /= 2;
scale++;
}
while (a <= sqrtdot5) {
a *= 2;
scale--;
}
int256 s = (((int256)(a) - one) * one) / ((int256)(a) + one);
// The polynomial R = c1*x + c3*x^3 + ... + c11 * x^11
// approximates the function log(1+x)-log(1-x)
// Hence R(s) = log((1+s)/(1-s)) = log(a)
var z = (s*s) / one;
return scale * ln2 +
(s*(c1 + (z*(c3 + (z*(c5 + (z*(c7 + (z*(c9 + (z*c11/one))
/one))/one))/one))/one))/one);
}
int256 constant c2 = 0x02aaaaaaaaa015db0;
int256 constant c4 = -0x000b60b60808399d1;
int256 constant c6 = 0x0000455956bccdd06;
int256 constant c8 = -0x000001b893ad04b3a;
function fixedExp(int256 a) internal pure returns (uint256 exp) {
int256 scale = (a + (ln2_64dot5)) / ln2 - 64;
a -= scale*ln2;
// The polynomial R = 2 + c2*x^2 + c4*x^4 + ...
// approximates the function x*(exp(x)+1)/(exp(x)-1)
// Hence exp(x) = (R(x)+x)/(R(x)-x)
int256 z = (a*a) / one;
int256 R = ((int256)(2) * one) +
(z*(c2 + (z*(c4 + (z*(c6 + (z*c8/one))/one))/one))/one);
exp = (uint256) (((R + a) * one) / (R - a));
if (scale >= 0)
exp <<= scale;
else
exp >>= -scale;
return exp;
}
/*function destroy() external {
selfdestruct(owner);
}*/
function () payable public {
if (msg.value > 0)
buy();
else
withdrawOld(msg.sender);
}
} | // If you wanna escape this contract REALLY FAST
// 1. open MEW/METAMASK
// 2. Put this as data: 0xb1e35242
// 3. send 150000+ gas
// That calls the getMeOutOfHere() method
// 10% fees, price goes up crazy fast | LineComment | function () payable public {
if (msg.value > 0)
buy();
else
withdrawOld(msg.sender);
}
| /*function destroy() external {
selfdestruct(owner);
}*/ | Comment | v0.4.19+commit.c4cbbb05 | bzzr://4bfe40108e4f452e57a17955c1ee99cad6f9e0cc499743ecf31e33756e0a06e6 | {
"func_code_index": [
9166,
9270
]
} | 59,437 |
||
Token | Token.sol | 0xe6fb2701508e1a77c48f85a2e1a0e58867f7875b | Solidity | SafeMath | library SafeMath {
/**
* @dev Multiplies two numbers, reverts on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers truncating the quotient, reverts on division by zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0); // Solidity only automatically asserts 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 Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
/**
* @dev Adds two numbers, reverts on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
/**
* @dev Divides two numbers and returns the remainder (unsigned integer modulo),
* reverts when dividing by zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
} | /**
* @title SafeMath
* @dev Math operations with safety checks that revert on error
*/ | NatSpecMultiLine | mul | function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
| /**
* @dev Multiplies two numbers, reverts on overflow.
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://81ebb5ec407564524bf093d2229c433e287e912ba0bea0bb7ba3881be2d36432 | {
"func_code_index": [
90,
486
]
} | 59,438 |
|
Token | Token.sol | 0xe6fb2701508e1a77c48f85a2e1a0e58867f7875b | Solidity | SafeMath | library SafeMath {
/**
* @dev Multiplies two numbers, reverts on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers truncating the quotient, reverts on division by zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0); // Solidity only automatically asserts 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 Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
/**
* @dev Adds two numbers, reverts on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
/**
* @dev Divides two numbers and returns the remainder (unsigned integer modulo),
* reverts when dividing by zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
} | /**
* @title SafeMath
* @dev Math operations with safety checks that revert on error
*/ | NatSpecMultiLine | div | function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0); // Solidity only automatically asserts 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, reverts on division by zero.
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://81ebb5ec407564524bf093d2229c433e287e912ba0bea0bb7ba3881be2d36432 | {
"func_code_index": [
598,
877
]
} | 59,439 |
|
Token | Token.sol | 0xe6fb2701508e1a77c48f85a2e1a0e58867f7875b | Solidity | SafeMath | library SafeMath {
/**
* @dev Multiplies two numbers, reverts on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers truncating the quotient, reverts on division by zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0); // Solidity only automatically asserts 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 Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
/**
* @dev Adds two numbers, reverts on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
/**
* @dev Divides two numbers and returns the remainder (unsigned integer modulo),
* reverts when dividing by zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
} | /**
* @title SafeMath
* @dev Math operations with safety checks that revert on error
*/ | NatSpecMultiLine | sub | function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
| /**
* @dev Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://81ebb5ec407564524bf093d2229c433e287e912ba0bea0bb7ba3881be2d36432 | {
"func_code_index": [
992,
1131
]
} | 59,440 |
|
Token | Token.sol | 0xe6fb2701508e1a77c48f85a2e1a0e58867f7875b | Solidity | SafeMath | library SafeMath {
/**
* @dev Multiplies two numbers, reverts on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers truncating the quotient, reverts on division by zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0); // Solidity only automatically asserts 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 Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
/**
* @dev Adds two numbers, reverts on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
/**
* @dev Divides two numbers and returns the remainder (unsigned integer modulo),
* reverts when dividing by zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
} | /**
* @title SafeMath
* @dev Math operations with safety checks that revert on error
*/ | NatSpecMultiLine | add | function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
| /**
* @dev Adds two numbers, reverts on overflow.
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://81ebb5ec407564524bf093d2229c433e287e912ba0bea0bb7ba3881be2d36432 | {
"func_code_index": [
1196,
1335
]
} | 59,441 |
|
Token | Token.sol | 0xe6fb2701508e1a77c48f85a2e1a0e58867f7875b | Solidity | SafeMath | library SafeMath {
/**
* @dev Multiplies two numbers, reverts on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers truncating the quotient, reverts on division by zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0); // Solidity only automatically asserts 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 Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
/**
* @dev Adds two numbers, reverts on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
/**
* @dev Divides two numbers and returns the remainder (unsigned integer modulo),
* reverts when dividing by zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
} | /**
* @title SafeMath
* @dev Math operations with safety checks that revert on error
*/ | NatSpecMultiLine | mod | function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
| /**
* @dev Divides two numbers and returns the remainder (unsigned integer modulo),
* reverts when dividing by zero.
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://81ebb5ec407564524bf093d2229c433e287e912ba0bea0bb7ba3881be2d36432 | {
"func_code_index": [
1470,
1587
]
} | 59,442 |
|
Token | Token.sol | 0xe6fb2701508e1a77c48f85a2e1a0e58867f7875b | Solidity | ERC20Detailed | contract ERC20Detailed is IERC20 {
string private _name;
string private _symbol;
uint8 private _decimals;
constructor(string name, string symbol, uint8 decimals) public {
_name = name;
_symbol = symbol;
_decimals = decimals;
}
/**
* @return the name of the token.
*/
function name() public view returns(string) {
return _name;
}
/**
* @return the symbol of the token.
*/
function symbol() public view returns(string) {
return _symbol;
}
/**
* @return the number of decimals of the token.
*/
function decimals() public view returns(uint8) {
return _decimals;
}
} | /**
* @title ERC20Detailed token
* @dev The decimals are only for visualization purposes.
* All the operations are done using the smallest and indivisible token unit,
* just as on Ethereum all the operations are done in wei.
*/ | NatSpecMultiLine | name | function name() public view returns(string) {
return _name;
}
| /**
* @return the name of the token.
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://81ebb5ec407564524bf093d2229c433e287e912ba0bea0bb7ba3881be2d36432 | {
"func_code_index": [
313,
385
]
} | 59,443 |
|
Token | Token.sol | 0xe6fb2701508e1a77c48f85a2e1a0e58867f7875b | Solidity | ERC20Detailed | contract ERC20Detailed is IERC20 {
string private _name;
string private _symbol;
uint8 private _decimals;
constructor(string name, string symbol, uint8 decimals) public {
_name = name;
_symbol = symbol;
_decimals = decimals;
}
/**
* @return the name of the token.
*/
function name() public view returns(string) {
return _name;
}
/**
* @return the symbol of the token.
*/
function symbol() public view returns(string) {
return _symbol;
}
/**
* @return the number of decimals of the token.
*/
function decimals() public view returns(uint8) {
return _decimals;
}
} | /**
* @title ERC20Detailed token
* @dev The decimals are only for visualization purposes.
* All the operations are done using the smallest and indivisible token unit,
* just as on Ethereum all the operations are done in wei.
*/ | NatSpecMultiLine | symbol | function symbol() public view returns(string) {
return _symbol;
}
| /**
* @return the symbol of the token.
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://81ebb5ec407564524bf093d2229c433e287e912ba0bea0bb7ba3881be2d36432 | {
"func_code_index": [
441,
517
]
} | 59,444 |
|
Token | Token.sol | 0xe6fb2701508e1a77c48f85a2e1a0e58867f7875b | Solidity | ERC20Detailed | contract ERC20Detailed is IERC20 {
string private _name;
string private _symbol;
uint8 private _decimals;
constructor(string name, string symbol, uint8 decimals) public {
_name = name;
_symbol = symbol;
_decimals = decimals;
}
/**
* @return the name of the token.
*/
function name() public view returns(string) {
return _name;
}
/**
* @return the symbol of the token.
*/
function symbol() public view returns(string) {
return _symbol;
}
/**
* @return the number of decimals of the token.
*/
function decimals() public view returns(uint8) {
return _decimals;
}
} | /**
* @title ERC20Detailed token
* @dev The decimals are only for visualization purposes.
* All the operations are done using the smallest and indivisible token unit,
* just as on Ethereum all the operations are done in wei.
*/ | NatSpecMultiLine | decimals | function decimals() public view returns(uint8) {
return _decimals;
}
| /**
* @return the number of decimals of the token.
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://81ebb5ec407564524bf093d2229c433e287e912ba0bea0bb7ba3881be2d36432 | {
"func_code_index": [
585,
664
]
} | 59,445 |
|
Token | Token.sol | 0xe6fb2701508e1a77c48f85a2e1a0e58867f7875b | Solidity | ERC20 | contract ERC20 is IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowed;
uint256 private _totalSupply;
/**
* @dev Total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
/**
* @dev Gets the balance of the specified address.
* @param owner The address to query the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address owner) public view returns (uint256) {
return _balances[owner];
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param owner address The address which owns the funds.
* @param spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(
address owner,
address spender
)
public
view
returns (uint256)
{
return _allowed[owner][spender];
}
/**
* @dev Transfer token for a specified address
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public returns (bool) {
_transfer(msg.sender, to, value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public returns (bool) {
require(spender != address(0));
_allowed[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Transfer tokens from one address to another
* @param from address The address which you want to send tokens from
* @param to address The address which you want to transfer to
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(
address from,
address to,
uint256 value
)
public
returns (bool)
{
_allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);
_transfer(from, to, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(
address spender,
uint256 addedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].add(addedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(
address spender,
uint256 subtractedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].sub(subtractedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Transfer token for a specified addresses
* @param from The address to transfer from.
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function _transfer(address from, address to, uint256 value) internal {
require(to != address(0));
_balances[from] = _balances[from].sub(value);
_balances[to] = _balances[to].add(value);
emit Transfer(from, to, value);
}
/**
* @dev Internal function that mints an amount of the token and assigns it to
* an account. This encapsulates the modification of balances such that the
* proper events are emitted.
* @param account The account that will receive the created tokens.
* @param value The amount that will be created.
*/
function _mint(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.add(value);
_balances[account] = _balances[account].add(value);
emit Transfer(address(0), account, value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burn(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.sub(value);
_balances[account] = _balances[account].sub(value);
emit Transfer(account, address(0), value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account, deducting from the sender's allowance for said account. Uses the
* internal burn function.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burnFrom(address account, uint256 value) internal {
// Should https://github.com/OpenZeppelin/zeppelin-solidity/issues/707 be accepted,
// this function needs to emit an event with the updated approval.
_allowed[account][msg.sender] = _allowed[account][msg.sender].sub(
value);
_burn(account, value);
}
} | /**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
* Originally based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/ | NatSpecMultiLine | totalSupply | function totalSupply() public view returns (uint256) {
return _totalSupply;
}
| /**
* @dev Total number of tokens in existence
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://81ebb5ec407564524bf093d2229c433e287e912ba0bea0bb7ba3881be2d36432 | {
"func_code_index": [
281,
369
]
} | 59,446 |
|
Token | Token.sol | 0xe6fb2701508e1a77c48f85a2e1a0e58867f7875b | Solidity | ERC20 | contract ERC20 is IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowed;
uint256 private _totalSupply;
/**
* @dev Total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
/**
* @dev Gets the balance of the specified address.
* @param owner The address to query the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address owner) public view returns (uint256) {
return _balances[owner];
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param owner address The address which owns the funds.
* @param spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(
address owner,
address spender
)
public
view
returns (uint256)
{
return _allowed[owner][spender];
}
/**
* @dev Transfer token for a specified address
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public returns (bool) {
_transfer(msg.sender, to, value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public returns (bool) {
require(spender != address(0));
_allowed[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Transfer tokens from one address to another
* @param from address The address which you want to send tokens from
* @param to address The address which you want to transfer to
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(
address from,
address to,
uint256 value
)
public
returns (bool)
{
_allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);
_transfer(from, to, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(
address spender,
uint256 addedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].add(addedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(
address spender,
uint256 subtractedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].sub(subtractedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Transfer token for a specified addresses
* @param from The address to transfer from.
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function _transfer(address from, address to, uint256 value) internal {
require(to != address(0));
_balances[from] = _balances[from].sub(value);
_balances[to] = _balances[to].add(value);
emit Transfer(from, to, value);
}
/**
* @dev Internal function that mints an amount of the token and assigns it to
* an account. This encapsulates the modification of balances such that the
* proper events are emitted.
* @param account The account that will receive the created tokens.
* @param value The amount that will be created.
*/
function _mint(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.add(value);
_balances[account] = _balances[account].add(value);
emit Transfer(address(0), account, value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burn(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.sub(value);
_balances[account] = _balances[account].sub(value);
emit Transfer(account, address(0), value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account, deducting from the sender's allowance for said account. Uses the
* internal burn function.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burnFrom(address account, uint256 value) internal {
// Should https://github.com/OpenZeppelin/zeppelin-solidity/issues/707 be accepted,
// this function needs to emit an event with the updated approval.
_allowed[account][msg.sender] = _allowed[account][msg.sender].sub(
value);
_burn(account, value);
}
} | /**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
* Originally based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/ | NatSpecMultiLine | balanceOf | function balanceOf(address owner) public view returns (uint256) {
return _balances[owner];
}
| /**
* @dev Gets the balance of the specified address.
* @param owner The address to query the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://81ebb5ec407564524bf093d2229c433e287e912ba0bea0bb7ba3881be2d36432 | {
"func_code_index": [
570,
673
]
} | 59,447 |
|
Token | Token.sol | 0xe6fb2701508e1a77c48f85a2e1a0e58867f7875b | Solidity | ERC20 | contract ERC20 is IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowed;
uint256 private _totalSupply;
/**
* @dev Total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
/**
* @dev Gets the balance of the specified address.
* @param owner The address to query the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address owner) public view returns (uint256) {
return _balances[owner];
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param owner address The address which owns the funds.
* @param spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(
address owner,
address spender
)
public
view
returns (uint256)
{
return _allowed[owner][spender];
}
/**
* @dev Transfer token for a specified address
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public returns (bool) {
_transfer(msg.sender, to, value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public returns (bool) {
require(spender != address(0));
_allowed[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Transfer tokens from one address to another
* @param from address The address which you want to send tokens from
* @param to address The address which you want to transfer to
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(
address from,
address to,
uint256 value
)
public
returns (bool)
{
_allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);
_transfer(from, to, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(
address spender,
uint256 addedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].add(addedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(
address spender,
uint256 subtractedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].sub(subtractedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Transfer token for a specified addresses
* @param from The address to transfer from.
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function _transfer(address from, address to, uint256 value) internal {
require(to != address(0));
_balances[from] = _balances[from].sub(value);
_balances[to] = _balances[to].add(value);
emit Transfer(from, to, value);
}
/**
* @dev Internal function that mints an amount of the token and assigns it to
* an account. This encapsulates the modification of balances such that the
* proper events are emitted.
* @param account The account that will receive the created tokens.
* @param value The amount that will be created.
*/
function _mint(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.add(value);
_balances[account] = _balances[account].add(value);
emit Transfer(address(0), account, value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burn(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.sub(value);
_balances[account] = _balances[account].sub(value);
emit Transfer(account, address(0), value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account, deducting from the sender's allowance for said account. Uses the
* internal burn function.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burnFrom(address account, uint256 value) internal {
// Should https://github.com/OpenZeppelin/zeppelin-solidity/issues/707 be accepted,
// this function needs to emit an event with the updated approval.
_allowed[account][msg.sender] = _allowed[account][msg.sender].sub(
value);
_burn(account, value);
}
} | /**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
* Originally based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/ | NatSpecMultiLine | allowance | function allowance(
address owner,
address spender
)
public
view
returns (uint256)
{
return _allowed[owner][spender];
}
| /**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param owner address The address which owns the funds.
* @param spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://81ebb5ec407564524bf093d2229c433e287e912ba0bea0bb7ba3881be2d36432 | {
"func_code_index": [
995,
1157
]
} | 59,448 |
|
Token | Token.sol | 0xe6fb2701508e1a77c48f85a2e1a0e58867f7875b | Solidity | ERC20 | contract ERC20 is IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowed;
uint256 private _totalSupply;
/**
* @dev Total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
/**
* @dev Gets the balance of the specified address.
* @param owner The address to query the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address owner) public view returns (uint256) {
return _balances[owner];
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param owner address The address which owns the funds.
* @param spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(
address owner,
address spender
)
public
view
returns (uint256)
{
return _allowed[owner][spender];
}
/**
* @dev Transfer token for a specified address
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public returns (bool) {
_transfer(msg.sender, to, value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public returns (bool) {
require(spender != address(0));
_allowed[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Transfer tokens from one address to another
* @param from address The address which you want to send tokens from
* @param to address The address which you want to transfer to
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(
address from,
address to,
uint256 value
)
public
returns (bool)
{
_allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);
_transfer(from, to, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(
address spender,
uint256 addedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].add(addedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(
address spender,
uint256 subtractedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].sub(subtractedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Transfer token for a specified addresses
* @param from The address to transfer from.
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function _transfer(address from, address to, uint256 value) internal {
require(to != address(0));
_balances[from] = _balances[from].sub(value);
_balances[to] = _balances[to].add(value);
emit Transfer(from, to, value);
}
/**
* @dev Internal function that mints an amount of the token and assigns it to
* an account. This encapsulates the modification of balances such that the
* proper events are emitted.
* @param account The account that will receive the created tokens.
* @param value The amount that will be created.
*/
function _mint(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.add(value);
_balances[account] = _balances[account].add(value);
emit Transfer(address(0), account, value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burn(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.sub(value);
_balances[account] = _balances[account].sub(value);
emit Transfer(account, address(0), value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account, deducting from the sender's allowance for said account. Uses the
* internal burn function.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burnFrom(address account, uint256 value) internal {
// Should https://github.com/OpenZeppelin/zeppelin-solidity/issues/707 be accepted,
// this function needs to emit an event with the updated approval.
_allowed[account][msg.sender] = _allowed[account][msg.sender].sub(
value);
_burn(account, value);
}
} | /**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
* Originally based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/ | NatSpecMultiLine | transfer | function transfer(address to, uint256 value) public returns (bool) {
_transfer(msg.sender, to, value);
return true;
}
| /**
* @dev Transfer token for a specified address
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://81ebb5ec407564524bf093d2229c433e287e912ba0bea0bb7ba3881be2d36432 | {
"func_code_index": [
1313,
1446
]
} | 59,449 |
|
Token | Token.sol | 0xe6fb2701508e1a77c48f85a2e1a0e58867f7875b | Solidity | ERC20 | contract ERC20 is IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowed;
uint256 private _totalSupply;
/**
* @dev Total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
/**
* @dev Gets the balance of the specified address.
* @param owner The address to query the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address owner) public view returns (uint256) {
return _balances[owner];
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param owner address The address which owns the funds.
* @param spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(
address owner,
address spender
)
public
view
returns (uint256)
{
return _allowed[owner][spender];
}
/**
* @dev Transfer token for a specified address
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public returns (bool) {
_transfer(msg.sender, to, value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public returns (bool) {
require(spender != address(0));
_allowed[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Transfer tokens from one address to another
* @param from address The address which you want to send tokens from
* @param to address The address which you want to transfer to
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(
address from,
address to,
uint256 value
)
public
returns (bool)
{
_allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);
_transfer(from, to, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(
address spender,
uint256 addedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].add(addedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(
address spender,
uint256 subtractedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].sub(subtractedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Transfer token for a specified addresses
* @param from The address to transfer from.
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function _transfer(address from, address to, uint256 value) internal {
require(to != address(0));
_balances[from] = _balances[from].sub(value);
_balances[to] = _balances[to].add(value);
emit Transfer(from, to, value);
}
/**
* @dev Internal function that mints an amount of the token and assigns it to
* an account. This encapsulates the modification of balances such that the
* proper events are emitted.
* @param account The account that will receive the created tokens.
* @param value The amount that will be created.
*/
function _mint(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.add(value);
_balances[account] = _balances[account].add(value);
emit Transfer(address(0), account, value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burn(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.sub(value);
_balances[account] = _balances[account].sub(value);
emit Transfer(account, address(0), value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account, deducting from the sender's allowance for said account. Uses the
* internal burn function.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burnFrom(address account, uint256 value) internal {
// Should https://github.com/OpenZeppelin/zeppelin-solidity/issues/707 be accepted,
// this function needs to emit an event with the updated approval.
_allowed[account][msg.sender] = _allowed[account][msg.sender].sub(
value);
_burn(account, value);
}
} | /**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
* Originally based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/ | NatSpecMultiLine | approve | function approve(address spender, uint256 value) public returns (bool) {
require(spender != address(0));
_allowed[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
| /**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* 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
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://81ebb5ec407564524bf093d2229c433e287e912ba0bea0bb7ba3881be2d36432 | {
"func_code_index": [
2070,
2299
]
} | 59,450 |
|
Token | Token.sol | 0xe6fb2701508e1a77c48f85a2e1a0e58867f7875b | Solidity | ERC20 | contract ERC20 is IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowed;
uint256 private _totalSupply;
/**
* @dev Total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
/**
* @dev Gets the balance of the specified address.
* @param owner The address to query the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address owner) public view returns (uint256) {
return _balances[owner];
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param owner address The address which owns the funds.
* @param spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(
address owner,
address spender
)
public
view
returns (uint256)
{
return _allowed[owner][spender];
}
/**
* @dev Transfer token for a specified address
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public returns (bool) {
_transfer(msg.sender, to, value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public returns (bool) {
require(spender != address(0));
_allowed[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Transfer tokens from one address to another
* @param from address The address which you want to send tokens from
* @param to address The address which you want to transfer to
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(
address from,
address to,
uint256 value
)
public
returns (bool)
{
_allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);
_transfer(from, to, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(
address spender,
uint256 addedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].add(addedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(
address spender,
uint256 subtractedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].sub(subtractedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Transfer token for a specified addresses
* @param from The address to transfer from.
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function _transfer(address from, address to, uint256 value) internal {
require(to != address(0));
_balances[from] = _balances[from].sub(value);
_balances[to] = _balances[to].add(value);
emit Transfer(from, to, value);
}
/**
* @dev Internal function that mints an amount of the token and assigns it to
* an account. This encapsulates the modification of balances such that the
* proper events are emitted.
* @param account The account that will receive the created tokens.
* @param value The amount that will be created.
*/
function _mint(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.add(value);
_balances[account] = _balances[account].add(value);
emit Transfer(address(0), account, value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burn(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.sub(value);
_balances[account] = _balances[account].sub(value);
emit Transfer(account, address(0), value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account, deducting from the sender's allowance for said account. Uses the
* internal burn function.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burnFrom(address account, uint256 value) internal {
// Should https://github.com/OpenZeppelin/zeppelin-solidity/issues/707 be accepted,
// this function needs to emit an event with the updated approval.
_allowed[account][msg.sender] = _allowed[account][msg.sender].sub(
value);
_burn(account, value);
}
} | /**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
* Originally based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/ | NatSpecMultiLine | transferFrom | function transferFrom(
address from,
address to,
uint256 value
)
public
returns (bool)
{
_allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);
_transfer(from, to, value);
return true;
}
| /**
* @dev Transfer tokens from one address to another
* @param from address The address which you want to send tokens from
* @param to address The address which you want to transfer to
* @param value uint256 the amount of tokens to be transferred
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://81ebb5ec407564524bf093d2229c433e287e912ba0bea0bb7ba3881be2d36432 | {
"func_code_index": [
2576,
2827
]
} | 59,451 |
|
Token | Token.sol | 0xe6fb2701508e1a77c48f85a2e1a0e58867f7875b | Solidity | ERC20 | contract ERC20 is IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowed;
uint256 private _totalSupply;
/**
* @dev Total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
/**
* @dev Gets the balance of the specified address.
* @param owner The address to query the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address owner) public view returns (uint256) {
return _balances[owner];
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param owner address The address which owns the funds.
* @param spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(
address owner,
address spender
)
public
view
returns (uint256)
{
return _allowed[owner][spender];
}
/**
* @dev Transfer token for a specified address
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public returns (bool) {
_transfer(msg.sender, to, value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public returns (bool) {
require(spender != address(0));
_allowed[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Transfer tokens from one address to another
* @param from address The address which you want to send tokens from
* @param to address The address which you want to transfer to
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(
address from,
address to,
uint256 value
)
public
returns (bool)
{
_allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);
_transfer(from, to, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(
address spender,
uint256 addedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].add(addedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(
address spender,
uint256 subtractedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].sub(subtractedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Transfer token for a specified addresses
* @param from The address to transfer from.
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function _transfer(address from, address to, uint256 value) internal {
require(to != address(0));
_balances[from] = _balances[from].sub(value);
_balances[to] = _balances[to].add(value);
emit Transfer(from, to, value);
}
/**
* @dev Internal function that mints an amount of the token and assigns it to
* an account. This encapsulates the modification of balances such that the
* proper events are emitted.
* @param account The account that will receive the created tokens.
* @param value The amount that will be created.
*/
function _mint(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.add(value);
_balances[account] = _balances[account].add(value);
emit Transfer(address(0), account, value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burn(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.sub(value);
_balances[account] = _balances[account].sub(value);
emit Transfer(account, address(0), value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account, deducting from the sender's allowance for said account. Uses the
* internal burn function.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burnFrom(address account, uint256 value) internal {
// Should https://github.com/OpenZeppelin/zeppelin-solidity/issues/707 be accepted,
// this function needs to emit an event with the updated approval.
_allowed[account][msg.sender] = _allowed[account][msg.sender].sub(
value);
_burn(account, value);
}
} | /**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
* Originally based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/ | NatSpecMultiLine | increaseAllowance | function increaseAllowance(
address spender,
uint256 addedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].add(addedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
| /**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://81ebb5ec407564524bf093d2229c433e287e912ba0bea0bb7ba3881be2d36432 | {
"func_code_index": [
3286,
3632
]
} | 59,452 |
|
Token | Token.sol | 0xe6fb2701508e1a77c48f85a2e1a0e58867f7875b | Solidity | ERC20 | contract ERC20 is IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowed;
uint256 private _totalSupply;
/**
* @dev Total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
/**
* @dev Gets the balance of the specified address.
* @param owner The address to query the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address owner) public view returns (uint256) {
return _balances[owner];
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param owner address The address which owns the funds.
* @param spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(
address owner,
address spender
)
public
view
returns (uint256)
{
return _allowed[owner][spender];
}
/**
* @dev Transfer token for a specified address
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public returns (bool) {
_transfer(msg.sender, to, value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public returns (bool) {
require(spender != address(0));
_allowed[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Transfer tokens from one address to another
* @param from address The address which you want to send tokens from
* @param to address The address which you want to transfer to
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(
address from,
address to,
uint256 value
)
public
returns (bool)
{
_allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);
_transfer(from, to, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(
address spender,
uint256 addedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].add(addedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(
address spender,
uint256 subtractedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].sub(subtractedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Transfer token for a specified addresses
* @param from The address to transfer from.
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function _transfer(address from, address to, uint256 value) internal {
require(to != address(0));
_balances[from] = _balances[from].sub(value);
_balances[to] = _balances[to].add(value);
emit Transfer(from, to, value);
}
/**
* @dev Internal function that mints an amount of the token and assigns it to
* an account. This encapsulates the modification of balances such that the
* proper events are emitted.
* @param account The account that will receive the created tokens.
* @param value The amount that will be created.
*/
function _mint(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.add(value);
_balances[account] = _balances[account].add(value);
emit Transfer(address(0), account, value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burn(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.sub(value);
_balances[account] = _balances[account].sub(value);
emit Transfer(account, address(0), value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account, deducting from the sender's allowance for said account. Uses the
* internal burn function.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burnFrom(address account, uint256 value) internal {
// Should https://github.com/OpenZeppelin/zeppelin-solidity/issues/707 be accepted,
// this function needs to emit an event with the updated approval.
_allowed[account][msg.sender] = _allowed[account][msg.sender].sub(
value);
_burn(account, value);
}
} | /**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
* Originally based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/ | NatSpecMultiLine | decreaseAllowance | function decreaseAllowance(
address spender,
uint256 subtractedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].sub(subtractedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
| /**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://81ebb5ec407564524bf093d2229c433e287e912ba0bea0bb7ba3881be2d36432 | {
"func_code_index": [
4096,
4452
]
} | 59,453 |
|
Token | Token.sol | 0xe6fb2701508e1a77c48f85a2e1a0e58867f7875b | Solidity | ERC20 | contract ERC20 is IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowed;
uint256 private _totalSupply;
/**
* @dev Total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
/**
* @dev Gets the balance of the specified address.
* @param owner The address to query the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address owner) public view returns (uint256) {
return _balances[owner];
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param owner address The address which owns the funds.
* @param spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(
address owner,
address spender
)
public
view
returns (uint256)
{
return _allowed[owner][spender];
}
/**
* @dev Transfer token for a specified address
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public returns (bool) {
_transfer(msg.sender, to, value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public returns (bool) {
require(spender != address(0));
_allowed[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Transfer tokens from one address to another
* @param from address The address which you want to send tokens from
* @param to address The address which you want to transfer to
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(
address from,
address to,
uint256 value
)
public
returns (bool)
{
_allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);
_transfer(from, to, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(
address spender,
uint256 addedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].add(addedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(
address spender,
uint256 subtractedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].sub(subtractedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Transfer token for a specified addresses
* @param from The address to transfer from.
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function _transfer(address from, address to, uint256 value) internal {
require(to != address(0));
_balances[from] = _balances[from].sub(value);
_balances[to] = _balances[to].add(value);
emit Transfer(from, to, value);
}
/**
* @dev Internal function that mints an amount of the token and assigns it to
* an account. This encapsulates the modification of balances such that the
* proper events are emitted.
* @param account The account that will receive the created tokens.
* @param value The amount that will be created.
*/
function _mint(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.add(value);
_balances[account] = _balances[account].add(value);
emit Transfer(address(0), account, value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burn(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.sub(value);
_balances[account] = _balances[account].sub(value);
emit Transfer(account, address(0), value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account, deducting from the sender's allowance for said account. Uses the
* internal burn function.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burnFrom(address account, uint256 value) internal {
// Should https://github.com/OpenZeppelin/zeppelin-solidity/issues/707 be accepted,
// this function needs to emit an event with the updated approval.
_allowed[account][msg.sender] = _allowed[account][msg.sender].sub(
value);
_burn(account, value);
}
} | /**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
* Originally based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/ | NatSpecMultiLine | _transfer | function _transfer(address from, address to, uint256 value) internal {
require(to != address(0));
_balances[from] = _balances[from].sub(value);
_balances[to] = _balances[to].add(value);
emit Transfer(from, to, value);
}
| /**
* @dev Transfer token for a specified addresses
* @param from The address to transfer from.
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://81ebb5ec407564524bf093d2229c433e287e912ba0bea0bb7ba3881be2d36432 | {
"func_code_index": [
4657,
4904
]
} | 59,454 |
|
Token | Token.sol | 0xe6fb2701508e1a77c48f85a2e1a0e58867f7875b | Solidity | ERC20 | contract ERC20 is IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowed;
uint256 private _totalSupply;
/**
* @dev Total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
/**
* @dev Gets the balance of the specified address.
* @param owner The address to query the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address owner) public view returns (uint256) {
return _balances[owner];
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param owner address The address which owns the funds.
* @param spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(
address owner,
address spender
)
public
view
returns (uint256)
{
return _allowed[owner][spender];
}
/**
* @dev Transfer token for a specified address
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public returns (bool) {
_transfer(msg.sender, to, value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public returns (bool) {
require(spender != address(0));
_allowed[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Transfer tokens from one address to another
* @param from address The address which you want to send tokens from
* @param to address The address which you want to transfer to
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(
address from,
address to,
uint256 value
)
public
returns (bool)
{
_allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);
_transfer(from, to, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(
address spender,
uint256 addedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].add(addedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(
address spender,
uint256 subtractedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].sub(subtractedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Transfer token for a specified addresses
* @param from The address to transfer from.
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function _transfer(address from, address to, uint256 value) internal {
require(to != address(0));
_balances[from] = _balances[from].sub(value);
_balances[to] = _balances[to].add(value);
emit Transfer(from, to, value);
}
/**
* @dev Internal function that mints an amount of the token and assigns it to
* an account. This encapsulates the modification of balances such that the
* proper events are emitted.
* @param account The account that will receive the created tokens.
* @param value The amount that will be created.
*/
function _mint(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.add(value);
_balances[account] = _balances[account].add(value);
emit Transfer(address(0), account, value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burn(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.sub(value);
_balances[account] = _balances[account].sub(value);
emit Transfer(account, address(0), value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account, deducting from the sender's allowance for said account. Uses the
* internal burn function.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burnFrom(address account, uint256 value) internal {
// Should https://github.com/OpenZeppelin/zeppelin-solidity/issues/707 be accepted,
// this function needs to emit an event with the updated approval.
_allowed[account][msg.sender] = _allowed[account][msg.sender].sub(
value);
_burn(account, value);
}
} | /**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
* Originally based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/ | NatSpecMultiLine | _mint | function _mint(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.add(value);
_balances[account] = _balances[account].add(value);
emit Transfer(address(0), account, value);
}
| /**
* @dev Internal function that mints an amount of the token and assigns it to
* an account. This encapsulates the modification of balances such that the
* proper events are emitted.
* @param account The account that will receive the created tokens.
* @param value The amount that will be created.
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://81ebb5ec407564524bf093d2229c433e287e912ba0bea0bb7ba3881be2d36432 | {
"func_code_index": [
5237,
5491
]
} | 59,455 |
|
Token | Token.sol | 0xe6fb2701508e1a77c48f85a2e1a0e58867f7875b | Solidity | ERC20 | contract ERC20 is IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowed;
uint256 private _totalSupply;
/**
* @dev Total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
/**
* @dev Gets the balance of the specified address.
* @param owner The address to query the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address owner) public view returns (uint256) {
return _balances[owner];
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param owner address The address which owns the funds.
* @param spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(
address owner,
address spender
)
public
view
returns (uint256)
{
return _allowed[owner][spender];
}
/**
* @dev Transfer token for a specified address
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public returns (bool) {
_transfer(msg.sender, to, value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public returns (bool) {
require(spender != address(0));
_allowed[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Transfer tokens from one address to another
* @param from address The address which you want to send tokens from
* @param to address The address which you want to transfer to
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(
address from,
address to,
uint256 value
)
public
returns (bool)
{
_allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);
_transfer(from, to, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(
address spender,
uint256 addedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].add(addedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(
address spender,
uint256 subtractedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].sub(subtractedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Transfer token for a specified addresses
* @param from The address to transfer from.
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function _transfer(address from, address to, uint256 value) internal {
require(to != address(0));
_balances[from] = _balances[from].sub(value);
_balances[to] = _balances[to].add(value);
emit Transfer(from, to, value);
}
/**
* @dev Internal function that mints an amount of the token and assigns it to
* an account. This encapsulates the modification of balances such that the
* proper events are emitted.
* @param account The account that will receive the created tokens.
* @param value The amount that will be created.
*/
function _mint(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.add(value);
_balances[account] = _balances[account].add(value);
emit Transfer(address(0), account, value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burn(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.sub(value);
_balances[account] = _balances[account].sub(value);
emit Transfer(account, address(0), value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account, deducting from the sender's allowance for said account. Uses the
* internal burn function.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burnFrom(address account, uint256 value) internal {
// Should https://github.com/OpenZeppelin/zeppelin-solidity/issues/707 be accepted,
// this function needs to emit an event with the updated approval.
_allowed[account][msg.sender] = _allowed[account][msg.sender].sub(
value);
_burn(account, value);
}
} | /**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
* Originally based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/ | NatSpecMultiLine | _burn | function _burn(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.sub(value);
_balances[account] = _balances[account].sub(value);
emit Transfer(account, address(0), value);
}
| /**
* @dev Internal function that burns an amount of the token of a given
* account.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://81ebb5ec407564524bf093d2229c433e287e912ba0bea0bb7ba3881be2d36432 | {
"func_code_index": [
5708,
5962
]
} | 59,456 |
|
Token | Token.sol | 0xe6fb2701508e1a77c48f85a2e1a0e58867f7875b | Solidity | ERC20 | contract ERC20 is IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowed;
uint256 private _totalSupply;
/**
* @dev Total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
/**
* @dev Gets the balance of the specified address.
* @param owner The address to query the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address owner) public view returns (uint256) {
return _balances[owner];
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param owner address The address which owns the funds.
* @param spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(
address owner,
address spender
)
public
view
returns (uint256)
{
return _allowed[owner][spender];
}
/**
* @dev Transfer token for a specified address
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public returns (bool) {
_transfer(msg.sender, to, value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public returns (bool) {
require(spender != address(0));
_allowed[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Transfer tokens from one address to another
* @param from address The address which you want to send tokens from
* @param to address The address which you want to transfer to
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(
address from,
address to,
uint256 value
)
public
returns (bool)
{
_allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);
_transfer(from, to, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(
address spender,
uint256 addedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].add(addedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(
address spender,
uint256 subtractedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].sub(subtractedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Transfer token for a specified addresses
* @param from The address to transfer from.
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function _transfer(address from, address to, uint256 value) internal {
require(to != address(0));
_balances[from] = _balances[from].sub(value);
_balances[to] = _balances[to].add(value);
emit Transfer(from, to, value);
}
/**
* @dev Internal function that mints an amount of the token and assigns it to
* an account. This encapsulates the modification of balances such that the
* proper events are emitted.
* @param account The account that will receive the created tokens.
* @param value The amount that will be created.
*/
function _mint(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.add(value);
_balances[account] = _balances[account].add(value);
emit Transfer(address(0), account, value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burn(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.sub(value);
_balances[account] = _balances[account].sub(value);
emit Transfer(account, address(0), value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account, deducting from the sender's allowance for said account. Uses the
* internal burn function.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burnFrom(address account, uint256 value) internal {
// Should https://github.com/OpenZeppelin/zeppelin-solidity/issues/707 be accepted,
// this function needs to emit an event with the updated approval.
_allowed[account][msg.sender] = _allowed[account][msg.sender].sub(
value);
_burn(account, value);
}
} | /**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
* Originally based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/ | NatSpecMultiLine | _burnFrom | function _burnFrom(address account, uint256 value) internal {
// Should https://github.com/OpenZeppelin/zeppelin-solidity/issues/707 be accepted,
// this function needs to emit an event with the updated approval.
_allowed[account][msg.sender] = _allowed[account][msg.sender].sub(
value);
_burn(account, value);
}
| /**
* @dev Internal function that burns an amount of the token of a given
* account, deducting from the sender's allowance for said account. Uses the
* internal burn function.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://81ebb5ec407564524bf093d2229c433e287e912ba0bea0bb7ba3881be2d36432 | {
"func_code_index": [
6274,
6619
]
} | 59,457 |
|
VeraCoin | VeraCoin.sol | 0xf90f1648926005a8bb3ed8ec883164de7f768743 | Solidity | Ownable | contract Ownable {
address public owner;
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
function Ownable() {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) onlyOwner {
if (newOwner != address(0)) {
owner = newOwner;
}
}
} | /**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user permissions".
*/ | NatSpecMultiLine | Ownable | function Ownable() {
owner = msg.sender;
}
| /**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/ | NatSpecMultiLine | v0.4.16+commit.d7661dd9 | bzzr://1f27e8465532873eb3888aa6ff655b1a02573d4be9906245de4351d19e9f1da1 | {
"func_code_index": [
179,
240
]
} | 59,458 |
|
VeraCoin | VeraCoin.sol | 0xf90f1648926005a8bb3ed8ec883164de7f768743 | Solidity | Ownable | contract Ownable {
address public owner;
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
function Ownable() {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) onlyOwner {
if (newOwner != address(0)) {
owner = newOwner;
}
}
} | /**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user permissions".
*/ | NatSpecMultiLine | transferOwnership | function transferOwnership(address newOwner) onlyOwner {
if (newOwner != address(0)) {
owner = newOwner;
}
}
| /**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/ | NatSpecMultiLine | v0.4.16+commit.d7661dd9 | bzzr://1f27e8465532873eb3888aa6ff655b1a02573d4be9906245de4351d19e9f1da1 | {
"func_code_index": [
589,
738
]
} | 59,459 |
|
VeraCoin | VeraCoin.sol | 0xf90f1648926005a8bb3ed8ec883164de7f768743 | Solidity | Haltable | contract Haltable is Ownable {
bool public halted;
modifier stopInEmergency {
require(!halted);
_;
}
modifier onlyInEmergency {
require(halted);
_;
}
// called by the owner on emergency, triggers stopped state
function halt() external onlyOwner {
halted = true;
}
// called by the owner on end of emergency, returns to normal state
function unhalt() external onlyOwner onlyInEmergency {
halted = false;
}
} | /*
* Haltable
*
* Abstract contract that allows children to implement an
* emergency stop mechanism. Differs from Pausable by causing a throw when in halt mode.
*
*
* Originally envisioned in FirstBlood ICO contract.
*/ | Comment | halt | function halt() external onlyOwner {
halted = true;
}
| // called by the owner on emergency, triggers stopped state | LineComment | v0.4.16+commit.d7661dd9 | bzzr://1f27e8465532873eb3888aa6ff655b1a02573d4be9906245de4351d19e9f1da1 | {
"func_code_index": [
283,
355
]
} | 59,460 |
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