{ "contractName": "ERC20", "abi": [ { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "owner", "type": "address" }, { "indexed": true, "internalType": "address", "name": "spender", "type": "address" }, { "indexed": false, "internalType": "uint256", "name": "value", "type": "uint256" } ], "name": "Approval", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "from", "type": "address" }, { "indexed": true, "internalType": "address", "name": "to", "type": "address" }, { "indexed": false, "internalType": "uint256", "name": "value", "type": "uint256" } ], "name": "Transfer", "type": "event" }, { "constant": true, "inputs": [], "name": "totalSupply", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "internalType": "address", "name": "account", "type": "address" } ], "name": "balanceOf", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "internalType": "address", "name": "recipient", "type": "address" }, { "internalType": "uint256", "name": "amount", "type": "uint256" } ], "name": "transfer", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [ { "internalType": "address", "name": "owner", "type": "address" }, { "internalType": "address", "name": "spender", "type": "address" } ], "name": "allowance", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "internalType": "address", "name": "spender", "type": "address" }, { "internalType": "uint256", "name": "amount", "type": "uint256" } ], "name": "approve", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "internalType": "address", "name": "sender", "type": "address" }, { "internalType": "address", "name": "recipient", "type": "address" }, { "internalType": "uint256", "name": "amount", "type": "uint256" } ], "name": "transferFrom", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "internalType": "address", "name": "spender", "type": "address" }, { "internalType": "uint256", "name": "addedValue", "type": "uint256" } ], "name": "increaseAllowance", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "internalType": "address", "name": "spender", "type": "address" }, { "internalType": "uint256", "name": "subtractedValue", "type": "uint256" } ], "name": "decreaseAllowance", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" } ], "metadata": "{\"compiler\":{\"version\":\"0.5.12+commit.7709ece9\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"constant\":true,\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"}],\"name\":\"allowance\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"subtractedValue\",\"type\":\"uint256\"}],\"name\":\"decreaseAllowance\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"addedValue\",\"type\":\"uint256\"}],\"name\":\"increaseAllowance\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"totalSupply\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transfer\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"details\":\"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 {ERC20Mintable}. * 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 guidelines: functions revert instead of 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}.\",\"methods\":{\"allowance(address,address)\":{\"details\":\"See {IERC20-allowance}.\"},\"approve(address,uint256)\":{\"details\":\"See {IERC20-approve}. * Requirements: * - `spender` cannot be the zero address.\"},\"balanceOf(address)\":{\"details\":\"See {IERC20-balanceOf}.\"},\"decreaseAllowance(address,uint256)\":{\"details\":\"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`.\"},\"increaseAllowance(address,uint256)\":{\"details\":\"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.\"},\"totalSupply()\":{\"details\":\"See {IERC20-totalSupply}.\"},\"transfer(address,uint256)\":{\"details\":\"See {IERC20-transfer}. * Requirements: * - `recipient` cannot be the zero address. - the caller must have a balance of at least `amount`.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"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`.\"}}},\"userdoc\":{\"methods\":{}}},\"settings\":{\"compilationTarget\":{\"@openzeppelin/contracts/token/ERC20/ERC20.sol\":\"ERC20\"},\"evmVersion\":\"petersburg\",\"libraries\":{},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"@openzeppelin/contracts/GSN/Context.sol\":{\"keccak256\":\"0x90a3995645af7562d84b9d69363ffa5ae7217714ab61e951bf7bc450f40e4061\",\"urls\":[\"bzz-raw://216ef9d6b614db4eb46970b4e84903f2534a45572dd30a79f0041f1a5830f436\",\"dweb:/ipfs/QmNPrJ4MWKUAWzKXpUqeyKRUfosaoANZAqXgvepdrCwZAG\"]},\"@openzeppelin/contracts/math/SafeMath.sol\":{\"keccak256\":\"0x640b6dee7a4b830bdfd52b5031a07fc2b12209f5b2e29e5d364a7d37f69d8076\",\"urls\":[\"bzz-raw://31113152e1ddb78fe7a4197f247591ca894e93f916867beb708d8e747b6cc74f\",\"dweb:/ipfs/QmbZaJyXdpsYGykVhHH9qpVGQg9DGCxE2QufbCUy3daTgq\"]},\"@openzeppelin/contracts/token/ERC20/ERC20.sol\":{\"keccak256\":\"0x65a4078c03875c25413a068ce9cfdd7e68a90f8786612d1189c89341e6e3b802\",\"urls\":[\"bzz-raw://45c0d95495b944fbb1aa09d900b0ab530903a432125ab8fddfa05064a7988991\",\"dweb:/ipfs/Qma2VeknkKA1THeubGzshWFk44BktXkXP1UKp9Un2uDSsu\"]},\"@openzeppelin/contracts/token/ERC20/IERC20.sol\":{\"keccak256\":\"0xe5bb0f57cff3e299f360052ba50f1ea0fff046df2be070b6943e0e3c3fdad8a9\",\"urls\":[\"bzz-raw://59fd025151435da35faa8093a5c7a17de02de9d08ad27275c5cdf05050820d91\",\"dweb:/ipfs/QmQMvwEcPhoRXzbXyrdoeRtvLoifUW9Qh7Luho7bmUPRkc\"]}},\"version\":1}", 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"source": "pragma solidity ^0.5.0;\n\nimport \"../../GSN/Context.sol\";\nimport \"./IERC20.sol\";\nimport \"../../math/SafeMath.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20Mintable}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin guidelines: functions revert instead\n * of returning `false` on failure. This behavior is nonetheless conventional\n * and does not conflict with the expectations of ERC20 applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20 {\n using SafeMath for uint256;\n\n mapping (address => uint256) private _balances;\n\n mapping (address => mapping (address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `recipient` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address recipient, uint256 amount) public returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public returns (bool) {\n _approve(_msgSender(), spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20};\n *\n * Requirements:\n * - `sender` and `recipient` cannot be the zero address.\n * - `sender` must have a balance of at least `amount`.\n * - the caller must have allowance for `sender`'s tokens of at least\n * `amount`.\n */\n function transferFrom(address sender, address recipient, uint256 amount) public returns (bool) {\n _transfer(sender, recipient, amount);\n _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, \"ERC20: transfer amount exceeds allowance\"));\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {\n _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {\n _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, \"ERC20: decreased allowance below zero\"));\n return true;\n }\n\n /**\n * @dev Moves tokens `amount` from `sender` to `recipient`.\n *\n * This is internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `sender` cannot be the zero address.\n * - `recipient` cannot be the zero address.\n * - `sender` must have a balance of at least `amount`.\n */\n function _transfer(address sender, address recipient, uint256 amount) internal {\n require(sender != address(0), \"ERC20: transfer from the zero address\");\n require(recipient != address(0), \"ERC20: transfer to the zero address\");\n\n _balances[sender] = _balances[sender].sub(amount, \"ERC20: transfer amount exceeds balance\");\n _balances[recipient] = _balances[recipient].add(amount);\n emit Transfer(sender, recipient, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements\n *\n * - `to` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _totalSupply = _totalSupply.add(amount);\n _balances[account] = _balances[account].add(amount);\n emit Transfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _balances[account] = _balances[account].sub(amount, \"ERC20: burn amount exceeds balance\");\n _totalSupply = _totalSupply.sub(amount);\n emit Transfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.\n *\n * This is internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(address owner, address spender, uint256 amount) internal {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`.`amount` is then deducted\n * from the caller's allowance.\n *\n * See {_burn} and {_approve}.\n */\n function _burnFrom(address account, uint256 amount) internal {\n _burn(account, amount);\n _approve(account, _msgSender(), _allowances[account][_msgSender()].sub(amount, \"ERC20: burn amount exceeds allowance\"));\n }\n}\n", "sourcePath": "@openzeppelin/contracts/token/ERC20/ERC20.sol", "ast": { "absolutePath": "@openzeppelin/contracts/token/ERC20/ERC20.sol", "exportedSymbols": { "ERC20": [ 11373 ] }, "id": 11374, "nodeType": "SourceUnit", "nodes": [ { "id": 10970, "literals": [ "solidity", "^", "0.5", ".0" ], "nodeType": "PragmaDirective", "src": "0:23:35" }, { "absolutePath": "@openzeppelin/contracts/GSN/Context.sol", "file": "../../GSN/Context.sol", "id": 10971, "nodeType": "ImportDirective", "scope": 11374, "sourceUnit": 10480, "src": "25:31:35", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/token/ERC20/IERC20.sol", "file": "./IERC20.sol", "id": 10972, "nodeType": "ImportDirective", "scope": 11374, "sourceUnit": 11471, "src": "57:22:35", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/math/SafeMath.sol", "file": "../../math/SafeMath.sol", "id": 10973, "nodeType": "ImportDirective", "scope": 11374, "sourceUnit": 10855, "src": "80:33:35", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 10974, "name": "Context", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 10479, "src": "1286:7:35", "typeDescriptions": { "typeIdentifier": "t_contract$_Context_$10479", "typeString": "contract Context" } }, "id": 10975, "nodeType": "InheritanceSpecifier", "src": "1286:7:35" }, { "arguments": null, "baseName": { "contractScope": null, "id": 10976, "name": "IERC20", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 11470, "src": "1295:6:35", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$11470", "typeString": "contract IERC20" } }, "id": 10977, "nodeType": "InheritanceSpecifier", "src": "1295:6:35" } ], "contractDependencies": [ 10479, 11470 ], "contractKind": "contract", "documentation": "@dev Implementation of the {IERC20} interface.\n * This implementation is agnostic to the way tokens are created. This means\nthat a supply mechanism has to be added in a derived contract using {_mint}.\nFor a generic mechanism see {ERC20Mintable}.\n * TIP: For a detailed writeup see our guide\nhttps://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\nto implement supply mechanisms].\n * We have followed general OpenZeppelin guidelines: functions revert instead\nof returning `false` on failure. This behavior is nonetheless conventional\nand does not conflict with the expectations of ERC20 applications.\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\nThis allows applications to reconstruct the allowance for all accounts just\nby listening to said events. Other implementations of the EIP may not emit\nthese events, as it isn't required by the specification.\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\nfunctions have been added to mitigate the well-known issues around setting\nallowances. See {IERC20-approve}.", "fullyImplemented": true, "id": 11373, "linearizedBaseContracts": [ 11373, 11470, 10479 ], "name": "ERC20", "nodeType": "ContractDefinition", "nodes": [ { "id": 10980, "libraryName": { "contractScope": null, "id": 10978, "name": "SafeMath", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 10854, "src": "1314:8:35", "typeDescriptions": { "typeIdentifier": "t_contract$_SafeMath_$10854", "typeString": "library SafeMath" } }, "nodeType": "UsingForDirective", "src": "1308:27:35", "typeName": { "id": 10979, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1327:7:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, { "constant": false, "id": 10984, "name": "_balances", "nodeType": "VariableDeclaration", "scope": 11373, "src": "1341:46:35", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" 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"address payable" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3289:33:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11093, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 10737, "src": "3289:37:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$_t_string_memory_ptr_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256,string memory) pure returns (uint256)" } }, "id": 11096, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3289:89:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11083, "name": "_approve", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11343, "src": "3258:8:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11097, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3258:121:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11098, "nodeType": "ExpressionStatement", "src": "3258:121:35" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 11099, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "3396:4:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 11076, "id": 11100, "nodeType": "Return", "src": "3389:11:35" } ] }, "documentation": "@dev See {IERC20-transferFrom}.\n * Emits an {Approval} event indicating the updated allowance. This is not\nrequired by the EIP. See the note at the beginning of {ERC20};\n * Requirements:\n- `sender` and `recipient` cannot be the zero address.\n- `sender` must have a balance of at least `amount`.\n- the caller must have allowance for `sender`'s tokens of at least\n`amount`.", "id": 11102, "implemented": true, "kind": "function", "modifiers": [], "name": "transferFrom", "nodeType": "FunctionDefinition", "parameters": { "id": 11073, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11068, "name": "sender", "nodeType": "VariableDeclaration", "scope": 11102, "src": "3129:14:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11067, "name": "address", "nodeType": "ElementaryTypeName", "src": "3129:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11070, "name": "recipient", "nodeType": "VariableDeclaration", "scope": 11102, "src": "3145:17:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11069, "name": "address", "nodeType": "ElementaryTypeName", "src": "3145:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11072, "name": "amount", "nodeType": "VariableDeclaration", "scope": 11102, "src": "3164:14:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11071, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3164:7:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "3128:51:35" }, "returnParameters": { "id": 11076, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11075, "name": "", "nodeType": "VariableDeclaration", "scope": 11102, "src": "3196:4:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 11074, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3196:4:35", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "3195:6:35" }, "scope": 11373, "src": "3107:300:35", "stateMutability": "nonpayable", "superFunction": 11453, "visibility": "public" }, { "body": { "id": 11128, "nodeType": "Block", "src": "3888:121:35", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 11112, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10467, "src": "3907:10:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 11113, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3907:12:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11114, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11104, "src": "3921:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11122, "name": "addedValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11106, "src": "3969:10:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11115, "name": "_allowances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10990, "src": "3930:11:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 11118, "indexExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 11116, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10467, "src": "3942:10:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 11117, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3942:12:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3930:25:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11120, "indexExpression": { "argumentTypes": null, "id": 11119, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11104, "src": "3956:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3930:34:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11121, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 10694, "src": "3930:38:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 11123, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3930:50:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11111, "name": "_approve", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11343, "src": "3898:8:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11124, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3898:83:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11125, "nodeType": "ExpressionStatement", "src": "3898:83:35" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 11126, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "3998:4:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 11110, "id": 11127, "nodeType": "Return", "src": "3991:11:35" } ] }, "documentation": "@dev Atomically increases the allowance granted to `spender` by the caller.\n * This is an alternative to {approve} that can be used as a mitigation for\nproblems described in {IERC20-approve}.\n * Emits an {Approval} event indicating the updated allowance.\n * Requirements:\n * - `spender` cannot be the zero address.", "id": 11129, "implemented": true, "kind": "function", "modifiers": [], "name": "increaseAllowance", "nodeType": "FunctionDefinition", "parameters": { "id": 11107, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11104, "name": "spender", "nodeType": "VariableDeclaration", "scope": 11129, "src": "3829:15:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11103, "name": "address", "nodeType": "ElementaryTypeName", "src": "3829:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11106, "name": "addedValue", "nodeType": "VariableDeclaration", "scope": 11129, "src": "3846:18:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11105, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3846:7:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "3828:37:35" }, "returnParameters": { "id": 11110, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11109, "name": "", "nodeType": "VariableDeclaration", "scope": 11129, "src": "3882:4:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 11108, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3882:4:35", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "3881:6:35" }, "scope": 11373, "src": "3802:207:35", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" }, { "body": { "id": 11156, "nodeType": "Block", "src": "4587:167:35", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 11139, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10467, "src": "4606:10:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 11140, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4606:12:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11141, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11131, "src": "4620:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11149, "name": "subtractedValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11133, "src": "4668:15:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "hexValue": "45524332303a2064656372656173656420616c6c6f77616e63652062656c6f77207a65726f", "id": 11150, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "4685:39:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_f8b476f7d28209d77d4a4ac1fe36b9f8259aa1bb6bddfa6e89de7e51615cf8a8", "typeString": "literal_string \"ERC20: decreased allowance below zero\"" }, "value": "ERC20: decreased allowance below zero" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_stringliteral_f8b476f7d28209d77d4a4ac1fe36b9f8259aa1bb6bddfa6e89de7e51615cf8a8", "typeString": "literal_string \"ERC20: decreased allowance below zero\"" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11142, "name": "_allowances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10990, "src": "4629:11:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 11145, "indexExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 11143, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10467, "src": "4641:10:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 11144, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4641:12:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "4629:25:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11147, "indexExpression": { "argumentTypes": null, "id": 11146, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11131, "src": "4655:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "4629:34:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11148, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 10737, "src": "4629:38:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$_t_string_memory_ptr_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256,string memory) pure returns (uint256)" } }, "id": 11151, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4629:96:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11138, "name": "_approve", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11343, "src": "4597:8:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11152, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4597:129:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11153, "nodeType": "ExpressionStatement", "src": "4597:129:35" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 11154, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "4743:4:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 11137, "id": 11155, "nodeType": "Return", "src": "4736:11:35" } ] }, "documentation": "@dev Atomically decreases the allowance granted to `spender` by the caller.\n * This is an alternative to {approve} that can be used as a mitigation for\nproblems described in {IERC20-approve}.\n * Emits an {Approval} event indicating the updated allowance.\n * Requirements:\n * - `spender` cannot be the zero address.\n- `spender` must have allowance for the caller of at least\n`subtractedValue`.", "id": 11157, "implemented": true, "kind": "function", "modifiers": [], "name": "decreaseAllowance", "nodeType": "FunctionDefinition", "parameters": { "id": 11134, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11131, "name": "spender", "nodeType": "VariableDeclaration", "scope": 11157, "src": "4523:15:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11130, "name": "address", "nodeType": "ElementaryTypeName", "src": "4523:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11133, "name": "subtractedValue", "nodeType": "VariableDeclaration", "scope": 11157, "src": "4540:23:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11132, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "4540:7:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "4522:42:35" }, "returnParameters": { "id": 11137, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11136, "name": "", "nodeType": "VariableDeclaration", "scope": 11157, "src": "4581:4:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 11135, "name": "bool", "nodeType": "ElementaryTypeName", "src": "4581:4:35", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "4580:6:35" }, "scope": 11373, "src": "4496:258:35", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" }, { "body": { "id": 11213, "nodeType": "Block", "src": "5307:385:35", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 11171, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 11167, "name": "sender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11159, "src": "5325:6:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11169, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "5343:1:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11168, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "5335:7:35", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 11170, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5335:10:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "src": "5325:20:35", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "45524332303a207472616e736665722066726f6d20746865207a65726f2061646472657373", "id": 11172, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "5347:39:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_baecc556b46f4ed0f2b4cb599d60785ac8563dd2dc0a5bf12edea1c39e5e1fea", "typeString": "literal_string \"ERC20: transfer from the zero address\"" }, "value": "ERC20: transfer from the zero address" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_baecc556b46f4ed0f2b4cb599d60785ac8563dd2dc0a5bf12edea1c39e5e1fea", "typeString": "literal_string \"ERC20: transfer from the zero address\"" } ], "id": 11166, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 11488, 11489 ], "referencedDeclaration": 11489, "src": "5317:7:35", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11173, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5317:70:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11174, "nodeType": "ExpressionStatement", "src": "5317:70:35" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 11180, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 11176, "name": "recipient", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11161, "src": "5405:9:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11178, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "5426:1:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11177, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "5418:7:35", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 11179, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5418:10:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "src": "5405:23:35", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "45524332303a207472616e7366657220746f20746865207a65726f2061646472657373", "id": 11181, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "5430:37:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_0557e210f7a69a685100a7e4e3d0a7024c546085cee28910fd17d0b081d9516f", "typeString": "literal_string \"ERC20: transfer to the zero address\"" }, "value": "ERC20: transfer to the zero address" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_0557e210f7a69a685100a7e4e3d0a7024c546085cee28910fd17d0b081d9516f", "typeString": "literal_string \"ERC20: transfer to the zero address\"" } ], "id": 11175, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 11488, 11489 ], "referencedDeclaration": 11489, "src": "5397:7:35", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11182, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5397:71:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11183, "nodeType": "ExpressionStatement", "src": "5397:71:35" }, { "expression": { "argumentTypes": null, "id": 11194, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11184, "name": "_balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10984, "src": "5479:9:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11186, "indexExpression": { "argumentTypes": null, "id": 11185, "name": "sender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11159, "src": "5489:6:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "5479:17:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11191, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11163, "src": "5521:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "hexValue": "45524332303a207472616e7366657220616d6f756e7420657863656564732062616c616e6365", "id": 11192, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "5529:40:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_4107e8a8b9e94bf8ff83080ddec1c0bffe897ebc2241b89d44f66b3d274088b6", "typeString": "literal_string \"ERC20: transfer amount exceeds balance\"" }, "value": "ERC20: transfer amount exceeds balance" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_stringliteral_4107e8a8b9e94bf8ff83080ddec1c0bffe897ebc2241b89d44f66b3d274088b6", "typeString": "literal_string \"ERC20: transfer amount exceeds balance\"" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11187, "name": "_balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10984, "src": "5499:9:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11189, "indexExpression": { "argumentTypes": null, "id": 11188, "name": "sender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11159, "src": "5509:6:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "5499:17:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11190, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 10737, "src": "5499:21:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$_t_string_memory_ptr_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256,string memory) pure returns (uint256)" } }, "id": 11193, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5499:71:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "5479:91:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11195, "nodeType": "ExpressionStatement", "src": "5479:91:35" }, { "expression": { "argumentTypes": null, "id": 11205, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11196, "name": "_balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10984, "src": "5580:9:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11198, "indexExpression": { "argumentTypes": null, "id": 11197, "name": "recipient", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11161, "src": "5590:9:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "5580:20:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11203, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11163, "src": "5628:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11199, "name": "_balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10984, "src": "5603:9:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11201, "indexExpression": { "argumentTypes": null, "id": 11200, "name": "recipient", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11161, "src": "5613:9:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "5603:20:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11202, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 10694, "src": "5603:24:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 11204, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5603:32:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "5580:55:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11206, "nodeType": "ExpressionStatement", "src": "5580:55:35" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11208, "name": "sender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11159, "src": "5659:6:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11209, "name": "recipient", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11161, "src": "5667:9:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11210, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11163, "src": "5678:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11207, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11461, "src": "5650:8:35", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11211, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5650:35:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11212, "nodeType": "EmitStatement", "src": "5645:40:35" } ] }, "documentation": "@dev Moves tokens `amount` from `sender` to `recipient`.\n * This is internal function is equivalent to {transfer}, and can be used to\ne.g. implement automatic token fees, slashing mechanisms, etc.\n * Emits a {Transfer} event.\n * Requirements:\n * - `sender` cannot be the zero address.\n- `recipient` cannot be the zero address.\n- `sender` must have a balance of at least `amount`.", "id": 11214, "implemented": true, "kind": "function", "modifiers": [], "name": "_transfer", "nodeType": "FunctionDefinition", "parameters": { "id": 11164, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11159, "name": "sender", "nodeType": "VariableDeclaration", "scope": 11214, "src": "5247:14:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11158, "name": "address", "nodeType": "ElementaryTypeName", "src": "5247:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11161, "name": "recipient", "nodeType": "VariableDeclaration", "scope": 11214, "src": "5263:17:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11160, "name": "address", "nodeType": "ElementaryTypeName", "src": "5263:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11163, "name": "amount", "nodeType": "VariableDeclaration", "scope": 11214, "src": "5282:14:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11162, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "5282:7:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "5246:51:35" }, "returnParameters": { "id": 11165, "nodeType": "ParameterList", "parameters": [], "src": "5307:0:35" }, "scope": 11373, "src": "5228:464:35", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 11256, "nodeType": "Block", "src": "6019:245:35", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 11226, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 11222, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11216, "src": "6037:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11224, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6056:1:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11223, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6048:7:35", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 11225, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6048:10:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "src": "6037:21:35", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "45524332303a206d696e7420746f20746865207a65726f2061646472657373", "id": 11227, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "6060:33:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_fc0b381caf0a47702017f3c4b358ebe3d3aff6c60ce819a8bf3ef5a95d4f202e", "typeString": "literal_string \"ERC20: mint to the zero address\"" }, "value": "ERC20: mint to the zero address" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_fc0b381caf0a47702017f3c4b358ebe3d3aff6c60ce819a8bf3ef5a95d4f202e", "typeString": "literal_string \"ERC20: mint to the zero address\"" } ], "id": 11221, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 11488, 11489 ], "referencedDeclaration": 11489, "src": "6029:7:35", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11228, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6029:65:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11229, "nodeType": "ExpressionStatement", "src": "6029:65:35" }, { "expression": { "argumentTypes": null, "id": 11235, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 11230, "name": "_totalSupply", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10992, "src": "6105:12:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11233, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11218, "src": "6137:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 11231, "name": "_totalSupply", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10992, "src": "6120:12:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11232, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 10694, "src": "6120:16:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 11234, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6120:24:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "6105:39:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11236, "nodeType": "ExpressionStatement", "src": "6105:39:35" }, { "expression": { "argumentTypes": null, "id": 11246, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11237, "name": "_balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10984, "src": "6154:9:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11239, "indexExpression": { "argumentTypes": null, "id": 11238, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11216, "src": "6164:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "6154:18:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11244, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11218, "src": "6198:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11240, "name": "_balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10984, "src": "6175:9:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11242, "indexExpression": { "argumentTypes": null, "id": 11241, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11216, "src": "6185:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "6175:18:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11243, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 10694, "src": "6175:22:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 11245, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6175:30:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "6154:51:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11247, "nodeType": "ExpressionStatement", "src": "6154:51:35" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11250, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6237:1:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11249, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6229:7:35", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 11251, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6229:10:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11252, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11216, "src": "6241:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11253, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11218, "src": "6250:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11248, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11461, "src": "6220:8:35", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11254, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6220:37:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11255, "nodeType": "EmitStatement", "src": "6215:42:35" } ] }, "documentation": "@dev Creates `amount` tokens and assigns them to `account`, increasing\nthe total supply.\n * Emits a {Transfer} event with `from` set to the zero address.\n * Requirements\n * - `to` cannot be the zero address.", "id": 11257, "implemented": true, "kind": "function", "modifiers": [], "name": "_mint", "nodeType": "FunctionDefinition", "parameters": { "id": 11219, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11216, "name": "account", "nodeType": "VariableDeclaration", "scope": 11257, "src": "5977:15:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11215, "name": "address", "nodeType": "ElementaryTypeName", "src": "5977:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11218, "name": "amount", "nodeType": "VariableDeclaration", "scope": 11257, "src": "5994:14:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11217, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "5994:7:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "5976:33:35" }, "returnParameters": { "id": 11220, "nodeType": "ParameterList", "parameters": [], "src": "6019:0:35" }, "scope": 11373, "src": "5962:302:35", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 11300, "nodeType": "Block", "src": "6641:285:35", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 11269, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 11265, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11259, "src": "6659:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11267, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6678:1:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11266, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6670:7:35", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 11268, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6670:10:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "src": "6659:21:35", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "45524332303a206275726e2066726f6d20746865207a65726f2061646472657373", "id": 11270, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "6682:35:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_b16788493b576042bb52c50ed56189e0b250db113c7bfb1c3897d25cf9632d7f", "typeString": "literal_string \"ERC20: burn from the zero address\"" }, "value": "ERC20: burn from the zero address" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_b16788493b576042bb52c50ed56189e0b250db113c7bfb1c3897d25cf9632d7f", "typeString": "literal_string \"ERC20: burn from the zero address\"" } ], "id": 11264, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 11488, 11489 ], "referencedDeclaration": 11489, "src": "6651:7:35", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11271, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6651:67:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11272, "nodeType": "ExpressionStatement", "src": "6651:67:35" }, { "expression": { "argumentTypes": null, "id": 11283, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11273, "name": "_balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10984, "src": "6729:9:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11275, "indexExpression": { "argumentTypes": null, "id": 11274, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11259, "src": "6739:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "6729:18:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11280, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11261, "src": "6773:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "hexValue": "45524332303a206275726e20616d6f756e7420657863656564732062616c616e6365", "id": 11281, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "6781:36:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_149b126e7125232b4200af45303d04fba8b74653b1a295a6a561a528c33fefdd", "typeString": "literal_string \"ERC20: burn amount exceeds balance\"" }, "value": "ERC20: burn amount exceeds balance" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_stringliteral_149b126e7125232b4200af45303d04fba8b74653b1a295a6a561a528c33fefdd", "typeString": "literal_string \"ERC20: burn amount exceeds balance\"" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11276, "name": "_balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10984, "src": "6750:9:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11278, "indexExpression": { "argumentTypes": null, "id": 11277, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11259, "src": "6760:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "6750:18:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11279, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 10737, "src": "6750:22:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$_t_string_memory_ptr_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256,string memory) pure returns (uint256)" } }, "id": 11282, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6750:68:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "6729:89:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11284, "nodeType": "ExpressionStatement", "src": "6729:89:35" }, { "expression": { "argumentTypes": null, "id": 11290, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 11285, "name": "_totalSupply", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10992, "src": "6828:12:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11288, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11261, "src": "6860:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 11286, "name": "_totalSupply", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10992, "src": "6843:12:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11287, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 10710, "src": "6843:16:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 11289, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6843:24:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "6828:39:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11291, "nodeType": "ExpressionStatement", "src": "6828:39:35" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11293, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11259, "src": "6891:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11295, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6908:1:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11294, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6900:7:35", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 11296, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6900:10:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11297, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11261, "src": "6912:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11292, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11461, "src": "6882:8:35", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11298, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6882:37:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11299, "nodeType": "EmitStatement", "src": "6877:42:35" } ] }, "documentation": "@dev Destroys `amount` tokens from `account`, reducing the\ntotal supply.\n * Emits a {Transfer} event with `to` set to the zero address.\n * Requirements\n * - `account` cannot be the zero address.\n- `account` must have at least `amount` tokens.", "id": 11301, "implemented": true, "kind": "function", "modifiers": [], "name": "_burn", "nodeType": "FunctionDefinition", "parameters": { "id": 11262, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11259, "name": "account", "nodeType": "VariableDeclaration", "scope": 11301, "src": "6599:15:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11258, "name": "address", "nodeType": "ElementaryTypeName", "src": "6599:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11261, "name": "amount", "nodeType": "VariableDeclaration", "scope": 11301, "src": "6616:14:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11260, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "6616:7:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "6598:33:35" }, "returnParameters": { "id": 11263, "nodeType": "ParameterList", "parameters": [], "src": "6641:0:35" }, "scope": 11373, "src": "6584:342:35", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 11342, "nodeType": "Block", "src": "7426:257:35", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 11315, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 11311, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11303, "src": "7444:5:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11313, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "7461:1:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11312, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "7453:7:35", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 11314, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7453:10:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "src": "7444:19:35", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "45524332303a20617070726f76652066726f6d20746865207a65726f2061646472657373", "id": 11316, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "7465:38:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_c953f4879035ed60e766b34720f656aab5c697b141d924c283124ecedb91c208", "typeString": "literal_string \"ERC20: approve from the zero address\"" }, "value": "ERC20: approve from the zero address" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_c953f4879035ed60e766b34720f656aab5c697b141d924c283124ecedb91c208", "typeString": "literal_string \"ERC20: approve from the zero address\"" } ], "id": 11310, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 11488, 11489 ], "referencedDeclaration": 11489, "src": "7436:7:35", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11317, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7436:68:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11318, "nodeType": "ExpressionStatement", "src": "7436:68:35" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 11324, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 11320, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11305, "src": "7522:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11322, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "7541:1:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11321, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "7533:7:35", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 11323, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7533:10:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "src": "7522:21:35", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "45524332303a20617070726f766520746f20746865207a65726f2061646472657373", "id": 11325, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "7545:36:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_24883cc5fe64ace9d0df1893501ecb93c77180f0ff69cca79affb3c316dc8029", "typeString": "literal_string \"ERC20: approve to the zero address\"" }, "value": "ERC20: approve to the zero address" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_24883cc5fe64ace9d0df1893501ecb93c77180f0ff69cca79affb3c316dc8029", "typeString": "literal_string \"ERC20: approve to the zero address\"" } ], "id": 11319, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 11488, 11489 ], "referencedDeclaration": 11489, "src": "7514:7:35", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11326, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7514:68:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11327, "nodeType": "ExpressionStatement", "src": "7514:68:35" }, { "expression": { "argumentTypes": null, "id": 11334, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11328, "name": "_allowances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10990, "src": "7593:11:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 11331, "indexExpression": { "argumentTypes": null, "id": 11329, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11303, "src": "7605:5:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "7593:18:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11332, "indexExpression": { "argumentTypes": null, "id": 11330, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11305, "src": "7612:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "7593:27:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 11333, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11307, "src": "7623:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7593:36:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11335, "nodeType": "ExpressionStatement", "src": "7593:36:35" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11337, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11303, "src": "7653:5:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11338, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11305, "src": "7660:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11339, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11307, "src": "7669:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11336, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11469, "src": "7644:8:35", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11340, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7644:32:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11341, "nodeType": "EmitStatement", "src": "7639:37:35" } ] }, "documentation": "@dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.\n * This is internal function is equivalent to `approve`, and can be used to\ne.g. set automatic allowances for certain subsystems, etc.\n * Emits an {Approval} event.\n * Requirements:\n * - `owner` cannot be the zero address.\n- `spender` cannot be the zero address.", "id": 11343, "implemented": true, "kind": "function", "modifiers": [], "name": "_approve", "nodeType": "FunctionDefinition", "parameters": { "id": 11308, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11303, "name": "owner", "nodeType": "VariableDeclaration", "scope": 11343, "src": "7369:13:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11302, "name": "address", "nodeType": "ElementaryTypeName", "src": "7369:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11305, "name": "spender", "nodeType": "VariableDeclaration", "scope": 11343, "src": "7384:15:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11304, "name": "address", "nodeType": "ElementaryTypeName", "src": "7384:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11307, "name": "amount", "nodeType": "VariableDeclaration", "scope": 11343, "src": "7401:14:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11306, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "7401:7:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "7368:48:35" }, "returnParameters": { "id": 11309, "nodeType": "ParameterList", "parameters": [], "src": "7426:0:35" }, "scope": 11373, "src": "7351:332:35", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 11371, "nodeType": "Block", "src": "7922:168:35", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11351, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11345, "src": "7938:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11352, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11347, "src": "7947:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11350, "name": "_burn", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11301, "src": "7932:5:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 11353, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7932:22:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11354, "nodeType": "ExpressionStatement", "src": "7932:22:35" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11356, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11345, "src": "7973:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 11357, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10467, "src": "7982:10:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 11358, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7982:12:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11366, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11347, "src": "8035:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "hexValue": "45524332303a206275726e20616d6f756e74206578636565647320616c6c6f77616e6365", "id": 11367, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "8043:38:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_a287c363786607a1457a2d9d12fa61c0073358e02d76b4035fc2c2d86a19c0db", "typeString": "literal_string \"ERC20: burn amount exceeds allowance\"" }, "value": "ERC20: burn amount exceeds allowance" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_stringliteral_a287c363786607a1457a2d9d12fa61c0073358e02d76b4035fc2c2d86a19c0db", "typeString": "literal_string \"ERC20: burn amount exceeds allowance\"" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11359, "name": "_allowances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10990, "src": "7996:11:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 11361, "indexExpression": { "argumentTypes": null, "id": 11360, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11345, "src": "8008:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "7996:20:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11364, "indexExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 11362, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10467, "src": "8017:10:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 11363, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8017:12:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "7996:34:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11365, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 10737, "src": "7996:38:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$_t_string_memory_ptr_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256,string memory) pure returns (uint256)" } }, "id": 11368, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7996:86:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11355, "name": "_approve", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11343, "src": "7964:8:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11369, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7964:119:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11370, "nodeType": "ExpressionStatement", "src": "7964:119:35" } ] }, "documentation": "@dev Destroys `amount` tokens from `account`.`amount` is then deducted\nfrom the caller's allowance.\n * See {_burn} and {_approve}.", "id": 11372, "implemented": true, "kind": "function", "modifiers": [], "name": "_burnFrom", "nodeType": "FunctionDefinition", "parameters": { "id": 11348, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11345, "name": "account", "nodeType": "VariableDeclaration", "scope": 11372, "src": "7880:15:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11344, "name": "address", "nodeType": "ElementaryTypeName", "src": "7880:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11347, "name": "amount", "nodeType": "VariableDeclaration", "scope": 11372, "src": "7897:14:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11346, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "7897:7:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "7879:33:35" }, "returnParameters": { "id": 11349, "nodeType": "ParameterList", "parameters": [], "src": "7922:0:35" }, "scope": 11373, "src": "7861:229:35", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" } ], "scope": 11374, "src": "1268:6824:35" } ], "src": "0:8093:35" }, "legacyAST": { "absolutePath": "@openzeppelin/contracts/token/ERC20/ERC20.sol", "exportedSymbols": { "ERC20": [ 11373 ] }, "id": 11374, "nodeType": "SourceUnit", "nodes": [ { "id": 10970, "literals": [ "solidity", "^", "0.5", ".0" ], "nodeType": "PragmaDirective", "src": "0:23:35" }, { "absolutePath": "@openzeppelin/contracts/GSN/Context.sol", "file": "../../GSN/Context.sol", "id": 10971, "nodeType": "ImportDirective", "scope": 11374, "sourceUnit": 10480, "src": "25:31:35", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/token/ERC20/IERC20.sol", "file": "./IERC20.sol", "id": 10972, "nodeType": "ImportDirective", "scope": 11374, "sourceUnit": 11471, "src": "57:22:35", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/math/SafeMath.sol", "file": "../../math/SafeMath.sol", "id": 10973, "nodeType": "ImportDirective", "scope": 11374, "sourceUnit": 10855, "src": "80:33:35", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 10974, "name": "Context", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 10479, "src": "1286:7:35", "typeDescriptions": { "typeIdentifier": "t_contract$_Context_$10479", "typeString": "contract Context" } }, "id": 10975, "nodeType": "InheritanceSpecifier", "src": "1286:7:35" }, { "arguments": null, "baseName": { "contractScope": null, "id": 10976, "name": "IERC20", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 11470, "src": "1295:6:35", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$11470", "typeString": "contract IERC20" } }, "id": 10977, "nodeType": "InheritanceSpecifier", "src": "1295:6:35" } ], "contractDependencies": [ 10479, 11470 ], "contractKind": "contract", "documentation": "@dev Implementation of the {IERC20} interface.\n * This implementation is agnostic to the way tokens are created. This means\nthat a supply mechanism has to be added in a derived contract using {_mint}.\nFor a generic mechanism see {ERC20Mintable}.\n * TIP: For a detailed writeup see our guide\nhttps://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\nto implement supply mechanisms].\n * We have followed general OpenZeppelin guidelines: functions revert instead\nof returning `false` on failure. This behavior is nonetheless conventional\nand does not conflict with the expectations of ERC20 applications.\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\nThis allows applications to reconstruct the allowance for all accounts just\nby listening to said events. Other implementations of the EIP may not emit\nthese events, as it isn't required by the specification.\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\nfunctions have been added to mitigate the well-known issues around setting\nallowances. See {IERC20-approve}.", "fullyImplemented": true, "id": 11373, "linearizedBaseContracts": [ 11373, 11470, 10479 ], "name": "ERC20", "nodeType": "ContractDefinition", "nodes": [ { "id": 10980, "libraryName": { "contractScope": null, "id": 10978, "name": "SafeMath", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 10854, "src": "1314:8:35", "typeDescriptions": { "typeIdentifier": "t_contract$_SafeMath_$10854", "typeString": "library SafeMath" } }, "nodeType": "UsingForDirective", "src": "1308:27:35", "typeName": { "id": 10979, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1327:7:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, { "constant": false, "id": 10984, "name": "_balances", "nodeType": "VariableDeclaration", "scope": 11373, "src": "1341:46:35", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "typeName": { "id": 10983, "keyType": { "id": 10981, "name": "address", "nodeType": "ElementaryTypeName", "src": "1350:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "1341:28:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "valueType": { "id": 10982, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1361:7:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, "value": null, "visibility": "private" }, { "constant": false, "id": 10990, "name": "_allowances", "nodeType": "VariableDeclaration", "scope": 11373, "src": "1394:69:35", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" }, "typeName": { "id": 10989, "keyType": { "id": 10985, "name": "address", "nodeType": "ElementaryTypeName", "src": "1403:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "1394:49:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" }, "valueType": { "id": 10988, "keyType": { "id": 10986, "name": "address", "nodeType": "ElementaryTypeName", "src": "1423:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "1414:28:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "valueType": { "id": 10987, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1434:7:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } } }, "value": null, "visibility": "private" }, { "constant": false, "id": 10992, "name": "_totalSupply", "nodeType": "VariableDeclaration", "scope": 11373, "src": "1470:28:35", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 10991, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1470:7:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "private" }, { "body": { "id": 10999, "nodeType": "Block", "src": "1612:36:35", "statements": [ { "expression": { "argumentTypes": null, "id": 10997, "name": "_totalSupply", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10992, "src": "1629:12:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 10996, "id": 10998, "nodeType": "Return", "src": "1622:19:35" } ] }, "documentation": "@dev See {IERC20-totalSupply}.", "id": 11000, "implemented": true, "kind": "function", "modifiers": [], "name": "totalSupply", "nodeType": "FunctionDefinition", "parameters": { "id": 10993, "nodeType": "ParameterList", "parameters": [], "src": "1579:2:35" }, "returnParameters": { "id": 10996, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 10995, "name": "", "nodeType": "VariableDeclaration", "scope": 11000, "src": "1603:7:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 10994, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1603:7:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "1602:9:35" }, "scope": 11373, "src": "1559:89:35", "stateMutability": "view", "superFunction": 11408, "visibility": "public" }, { "body": { "id": 11011, "nodeType": "Block", "src": "1772:42:35", "statements": [ { 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"implemented": true, "kind": "function", "modifiers": [], "name": "balanceOf", "nodeType": "FunctionDefinition", "parameters": { "id": 11003, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11002, "name": "account", "nodeType": "VariableDeclaration", "scope": 11012, "src": "1725:15:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11001, "name": "address", "nodeType": "ElementaryTypeName", "src": "1725:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "1724:17:35" }, "returnParameters": { "id": 11006, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11005, "name": "", "nodeType": "VariableDeclaration", "scope": 11012, "src": "1763:7:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11004, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1763:7:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "1762:9:35" }, "scope": 11373, "src": "1706:108:35", "stateMutability": "view", "superFunction": 11415, "visibility": "public" }, { "body": { "id": 11030, "nodeType": "Block", "src": "2092:80:35", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 11022, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10467, "src": "2112:10:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 11023, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2112:12:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11024, "name": "recipient", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11014, "src": "2126:9:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11025, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11016, "src": "2137:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11021, "name": "_transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11214, "src": "2102:9:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11026, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2102:42:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11027, "nodeType": "ExpressionStatement", "src": "2102:42:35" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 11028, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "2161:4:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 11020, "id": 11029, "nodeType": "Return", "src": "2154:11:35" } ] }, "documentation": "@dev See {IERC20-transfer}.\n * Requirements:\n * - `recipient` cannot be the zero address.\n- the caller must have a balance of at least `amount`.", "id": 11031, "implemented": true, "kind": "function", "modifiers": [], "name": "transfer", "nodeType": "FunctionDefinition", "parameters": { "id": 11017, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11014, "name": "recipient", "nodeType": "VariableDeclaration", "scope": 11031, "src": "2035:17:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11013, "name": "address", "nodeType": "ElementaryTypeName", "src": "2035:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11016, "name": "amount", "nodeType": "VariableDeclaration", "scope": 11031, "src": "2054:14:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11015, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2054:7:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2034:35:35" }, "returnParameters": { "id": 11020, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11019, "name": "", "nodeType": "VariableDeclaration", "scope": 11031, "src": "2086:4:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 11018, "name": "bool", "nodeType": "ElementaryTypeName", "src": "2086:4:35", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "2085:6:35" }, "scope": 11373, "src": "2017:155:35", "stateMutability": "nonpayable", "superFunction": 11424, "visibility": "public" }, { "body": { "id": 11046, "nodeType": "Block", "src": "2311:51:35", "statements": [ { "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11040, "name": "_allowances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10990, "src": "2328:11:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 11042, "indexExpression": { "argumentTypes": null, "id": 11041, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11033, "src": "2340:5:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "2328:18:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11044, "indexExpression": { "argumentTypes": null, "id": 11043, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11035, "src": "2347:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "2328:27:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 11039, "id": 11045, "nodeType": "Return", "src": "2321:34:35" } ] }, "documentation": "@dev See {IERC20-allowance}.", "id": 11047, "implemented": true, "kind": "function", "modifiers": [], "name": "allowance", "nodeType": "FunctionDefinition", "parameters": { "id": 11036, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11033, "name": "owner", "nodeType": "VariableDeclaration", "scope": 11047, "src": "2249:13:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11032, "name": "address", "nodeType": "ElementaryTypeName", "src": "2249:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11035, "name": "spender", "nodeType": "VariableDeclaration", "scope": 11047, "src": "2264:15:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11034, "name": "address", "nodeType": "ElementaryTypeName", "src": "2264:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": 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{ "argumentTypes": [], "id": 11057, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10467, "src": "2591:10:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 11058, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2591:12:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11059, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11049, "src": "2605:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11060, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 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"src": "3230:9:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11080, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11072, "src": "3241:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11077, "name": "_transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11214, "src": "3212:9:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11081, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3212:36:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11082, "nodeType": "ExpressionStatement", "src": "3212:36:35" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11084, "name": "sender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11068, "src": "3267:6:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 11085, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10467, "src": "3275:10:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 11086, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3275:12:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11094, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11072, "src": "3327:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "hexValue": "45524332303a207472616e7366657220616d6f756e74206578636565647320616c6c6f77616e6365", "id": 11095, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "3335:42:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_974d1b4421da69cc60b481194f0dad36a5bb4e23da810da7a7fb30cdba178330", "typeString": "literal_string \"ERC20: transfer amount exceeds allowance\"" }, "value": "ERC20: transfer amount exceeds allowance" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_stringliteral_974d1b4421da69cc60b481194f0dad36a5bb4e23da810da7a7fb30cdba178330", "typeString": "literal_string \"ERC20: transfer amount exceeds allowance\"" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11087, "name": "_allowances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10990, "src": "3289:11:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 11089, "indexExpression": { "argumentTypes": null, "id": 11088, "name": "sender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11068, "src": "3301:6:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3289:19:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11092, "indexExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 11090, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10467, "src": "3309:10:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 11091, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3309:12:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3289:33:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11093, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 10737, "src": "3289:37:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$_t_string_memory_ptr_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256,string memory) pure returns (uint256)" } }, "id": 11096, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3289:89:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11083, "name": "_approve", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11343, "src": "3258:8:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11097, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3258:121:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11098, "nodeType": "ExpressionStatement", "src": "3258:121:35" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 11099, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "3396:4:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 11076, "id": 11100, "nodeType": "Return", "src": "3389:11:35" } ] }, "documentation": "@dev See {IERC20-transferFrom}.\n * Emits an {Approval} event indicating the updated allowance. This is not\nrequired by the EIP. See the note at the beginning of {ERC20};\n * Requirements:\n- `sender` and `recipient` cannot be the zero address.\n- `sender` must have a balance of at least `amount`.\n- the caller must have allowance for `sender`'s tokens of at least\n`amount`.", "id": 11102, "implemented": true, "kind": "function", "modifiers": [], "name": "transferFrom", "nodeType": "FunctionDefinition", "parameters": { "id": 11073, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11068, "name": "sender", "nodeType": "VariableDeclaration", "scope": 11102, "src": "3129:14:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11067, "name": "address", "nodeType": "ElementaryTypeName", "src": "3129:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11070, "name": "recipient", "nodeType": "VariableDeclaration", "scope": 11102, "src": "3145:17:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11069, "name": "address", "nodeType": "ElementaryTypeName", "src": "3145:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11072, "name": "amount", "nodeType": "VariableDeclaration", "scope": 11102, "src": "3164:14:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11071, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3164:7:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "3128:51:35" }, "returnParameters": { "id": 11076, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11075, "name": "", "nodeType": "VariableDeclaration", "scope": 11102, "src": "3196:4:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 11074, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3196:4:35", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "3195:6:35" }, "scope": 11373, "src": "3107:300:35", "stateMutability": "nonpayable", "superFunction": 11453, "visibility": "public" }, { "body": { "id": 11128, "nodeType": "Block", "src": "3888:121:35", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 11112, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10467, "src": "3907:10:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 11113, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3907:12:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11114, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11104, "src": "3921:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11122, "name": "addedValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11106, "src": "3969:10:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11115, "name": "_allowances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10990, "src": "3930:11:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 11118, "indexExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 11116, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10467, "src": "3942:10:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 11117, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3942:12:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3930:25:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11120, "indexExpression": { "argumentTypes": null, "id": 11119, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11104, "src": "3956:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3930:34:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11121, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 10694, "src": "3930:38:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 11123, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3930:50:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11111, "name": "_approve", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11343, "src": "3898:8:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11124, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3898:83:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11125, "nodeType": "ExpressionStatement", "src": "3898:83:35" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 11126, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "3998:4:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 11110, "id": 11127, "nodeType": "Return", "src": "3991:11:35" } ] }, "documentation": "@dev Atomically increases the allowance granted to `spender` by the caller.\n * This is an alternative to {approve} that can be used as a mitigation for\nproblems described in {IERC20-approve}.\n * Emits an {Approval} event indicating the updated allowance.\n * Requirements:\n * - `spender` cannot be the zero address.", "id": 11129, "implemented": true, "kind": "function", "modifiers": [], "name": "increaseAllowance", "nodeType": "FunctionDefinition", "parameters": { "id": 11107, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11104, "name": "spender", "nodeType": "VariableDeclaration", "scope": 11129, "src": "3829:15:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11103, "name": "address", "nodeType": "ElementaryTypeName", "src": "3829:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11106, "name": "addedValue", "nodeType": "VariableDeclaration", "scope": 11129, "src": "3846:18:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11105, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3846:7:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "3828:37:35" }, "returnParameters": { "id": 11110, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11109, "name": "", "nodeType": "VariableDeclaration", "scope": 11129, "src": "3882:4:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 11108, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3882:4:35", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "3881:6:35" }, "scope": 11373, "src": "3802:207:35", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" }, { "body": { "id": 11156, "nodeType": "Block", "src": "4587:167:35", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 11139, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10467, "src": "4606:10:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 11140, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4606:12:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11141, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11131, "src": "4620:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11149, "name": "subtractedValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11133, "src": "4668:15:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "hexValue": "45524332303a2064656372656173656420616c6c6f77616e63652062656c6f77207a65726f", "id": 11150, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "4685:39:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_f8b476f7d28209d77d4a4ac1fe36b9f8259aa1bb6bddfa6e89de7e51615cf8a8", "typeString": "literal_string \"ERC20: decreased allowance below zero\"" }, "value": "ERC20: decreased allowance below zero" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_stringliteral_f8b476f7d28209d77d4a4ac1fe36b9f8259aa1bb6bddfa6e89de7e51615cf8a8", "typeString": "literal_string \"ERC20: decreased allowance below zero\"" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11142, "name": "_allowances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10990, "src": "4629:11:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 11145, "indexExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 11143, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10467, "src": "4641:10:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 11144, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4641:12:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "4629:25:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11147, "indexExpression": { "argumentTypes": null, "id": 11146, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11131, "src": "4655:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "4629:34:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11148, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 10737, "src": "4629:38:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$_t_string_memory_ptr_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256,string memory) pure returns (uint256)" } }, "id": 11151, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4629:96:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11138, "name": "_approve", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11343, "src": "4597:8:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11152, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4597:129:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11153, "nodeType": "ExpressionStatement", "src": "4597:129:35" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 11154, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "4743:4:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 11137, "id": 11155, "nodeType": "Return", "src": "4736:11:35" } ] }, "documentation": "@dev Atomically decreases the allowance granted to `spender` by the caller.\n * This is an alternative to {approve} that can be used as a mitigation for\nproblems described in {IERC20-approve}.\n * Emits an {Approval} event indicating the updated allowance.\n * Requirements:\n * - `spender` cannot be the zero address.\n- `spender` must have allowance for the caller of at least\n`subtractedValue`.", "id": 11157, "implemented": true, "kind": "function", "modifiers": [], "name": "decreaseAllowance", "nodeType": "FunctionDefinition", "parameters": { "id": 11134, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11131, "name": "spender", "nodeType": "VariableDeclaration", "scope": 11157, "src": "4523:15:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11130, "name": "address", "nodeType": "ElementaryTypeName", "src": "4523:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11133, "name": "subtractedValue", "nodeType": "VariableDeclaration", "scope": 11157, "src": "4540:23:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11132, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "4540:7:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "4522:42:35" }, "returnParameters": { "id": 11137, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11136, "name": "", "nodeType": "VariableDeclaration", "scope": 11157, "src": "4581:4:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 11135, "name": "bool", "nodeType": "ElementaryTypeName", "src": "4581:4:35", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "4580:6:35" }, "scope": 11373, "src": "4496:258:35", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" }, { "body": { "id": 11213, "nodeType": "Block", "src": "5307:385:35", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 11171, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 11167, "name": "sender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11159, "src": "5325:6:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11169, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "5343:1:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11168, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "5335:7:35", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 11170, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5335:10:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "src": "5325:20:35", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "45524332303a207472616e736665722066726f6d20746865207a65726f2061646472657373", "id": 11172, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "5347:39:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_baecc556b46f4ed0f2b4cb599d60785ac8563dd2dc0a5bf12edea1c39e5e1fea", "typeString": "literal_string \"ERC20: transfer from the zero address\"" }, "value": "ERC20: transfer from the zero address" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_baecc556b46f4ed0f2b4cb599d60785ac8563dd2dc0a5bf12edea1c39e5e1fea", "typeString": "literal_string \"ERC20: transfer from the zero address\"" } ], "id": 11166, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 11488, 11489 ], "referencedDeclaration": 11489, "src": "5317:7:35", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11173, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5317:70:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11174, "nodeType": "ExpressionStatement", "src": "5317:70:35" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 11180, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 11176, "name": "recipient", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11161, "src": "5405:9:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11178, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "5426:1:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11177, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "5418:7:35", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 11179, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5418:10:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "src": "5405:23:35", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "45524332303a207472616e7366657220746f20746865207a65726f2061646472657373", "id": 11181, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "5430:37:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_0557e210f7a69a685100a7e4e3d0a7024c546085cee28910fd17d0b081d9516f", "typeString": "literal_string \"ERC20: transfer to the zero address\"" }, "value": "ERC20: transfer to the zero address" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_0557e210f7a69a685100a7e4e3d0a7024c546085cee28910fd17d0b081d9516f", "typeString": "literal_string \"ERC20: transfer to the zero address\"" } ], "id": 11175, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 11488, 11489 ], "referencedDeclaration": 11489, "src": "5397:7:35", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11182, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5397:71:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11183, "nodeType": "ExpressionStatement", "src": "5397:71:35" }, { "expression": { "argumentTypes": null, "id": 11194, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11184, "name": "_balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10984, "src": "5479:9:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11186, "indexExpression": { "argumentTypes": null, "id": 11185, "name": "sender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11159, "src": "5489:6:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "5479:17:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11191, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11163, "src": "5521:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "hexValue": "45524332303a207472616e7366657220616d6f756e7420657863656564732062616c616e6365", "id": 11192, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "5529:40:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_4107e8a8b9e94bf8ff83080ddec1c0bffe897ebc2241b89d44f66b3d274088b6", "typeString": "literal_string \"ERC20: transfer amount exceeds balance\"" }, "value": "ERC20: transfer amount exceeds balance" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_stringliteral_4107e8a8b9e94bf8ff83080ddec1c0bffe897ebc2241b89d44f66b3d274088b6", "typeString": "literal_string \"ERC20: transfer amount exceeds balance\"" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11187, "name": "_balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10984, "src": "5499:9:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11189, "indexExpression": { "argumentTypes": null, "id": 11188, "name": "sender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11159, "src": "5509:6:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "5499:17:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11190, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 10737, "src": "5499:21:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$_t_string_memory_ptr_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256,string memory) pure returns (uint256)" } }, "id": 11193, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5499:71:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "5479:91:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11195, "nodeType": "ExpressionStatement", "src": "5479:91:35" }, { "expression": { "argumentTypes": null, "id": 11205, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11196, "name": "_balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10984, "src": "5580:9:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11198, "indexExpression": { "argumentTypes": null, "id": 11197, "name": "recipient", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11161, "src": "5590:9:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "5580:20:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11203, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11163, "src": "5628:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11199, "name": "_balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10984, "src": "5603:9:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11201, "indexExpression": { "argumentTypes": null, "id": 11200, "name": "recipient", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11161, "src": "5613:9:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "5603:20:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11202, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 10694, "src": "5603:24:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 11204, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5603:32:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "5580:55:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11206, "nodeType": "ExpressionStatement", "src": "5580:55:35" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11208, "name": "sender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11159, "src": "5659:6:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11209, "name": "recipient", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11161, "src": "5667:9:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11210, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11163, "src": "5678:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11207, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11461, "src": "5650:8:35", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11211, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5650:35:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11212, "nodeType": "EmitStatement", "src": "5645:40:35" } ] }, "documentation": "@dev Moves tokens `amount` from `sender` to `recipient`.\n * This is internal function is equivalent to {transfer}, and can be used to\ne.g. implement automatic token fees, slashing mechanisms, etc.\n * Emits a {Transfer} event.\n * Requirements:\n * - `sender` cannot be the zero address.\n- `recipient` cannot be the zero address.\n- `sender` must have a balance of at least `amount`.", "id": 11214, "implemented": true, "kind": "function", "modifiers": [], "name": "_transfer", "nodeType": "FunctionDefinition", "parameters": { "id": 11164, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11159, "name": "sender", "nodeType": "VariableDeclaration", "scope": 11214, "src": "5247:14:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11158, "name": "address", "nodeType": "ElementaryTypeName", "src": "5247:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11161, "name": "recipient", "nodeType": "VariableDeclaration", "scope": 11214, "src": "5263:17:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11160, "name": "address", "nodeType": "ElementaryTypeName", "src": "5263:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11163, "name": "amount", "nodeType": "VariableDeclaration", "scope": 11214, "src": "5282:14:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11162, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "5282:7:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "5246:51:35" }, "returnParameters": { "id": 11165, "nodeType": "ParameterList", "parameters": [], "src": "5307:0:35" }, "scope": 11373, "src": "5228:464:35", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 11256, "nodeType": "Block", "src": "6019:245:35", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 11226, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 11222, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11216, "src": "6037:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11224, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6056:1:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11223, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6048:7:35", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 11225, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6048:10:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "src": "6037:21:35", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "45524332303a206d696e7420746f20746865207a65726f2061646472657373", "id": 11227, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "6060:33:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_fc0b381caf0a47702017f3c4b358ebe3d3aff6c60ce819a8bf3ef5a95d4f202e", "typeString": "literal_string \"ERC20: mint to the zero address\"" }, "value": "ERC20: mint to the zero address" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_fc0b381caf0a47702017f3c4b358ebe3d3aff6c60ce819a8bf3ef5a95d4f202e", "typeString": "literal_string \"ERC20: mint to the zero address\"" } ], "id": 11221, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 11488, 11489 ], "referencedDeclaration": 11489, "src": "6029:7:35", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11228, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6029:65:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11229, "nodeType": "ExpressionStatement", "src": "6029:65:35" }, { "expression": { "argumentTypes": null, "id": 11235, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 11230, "name": "_totalSupply", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10992, "src": "6105:12:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11233, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11218, "src": "6137:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 11231, "name": "_totalSupply", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10992, "src": "6120:12:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11232, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 10694, "src": "6120:16:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 11234, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6120:24:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "6105:39:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11236, "nodeType": "ExpressionStatement", "src": "6105:39:35" }, { "expression": { "argumentTypes": null, "id": 11246, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11237, "name": "_balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10984, "src": "6154:9:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11239, "indexExpression": { "argumentTypes": null, "id": 11238, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11216, "src": "6164:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "6154:18:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11244, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11218, "src": "6198:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11240, "name": "_balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10984, "src": "6175:9:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11242, "indexExpression": { "argumentTypes": null, "id": 11241, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11216, "src": "6185:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "6175:18:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11243, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 10694, "src": "6175:22:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 11245, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6175:30:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "6154:51:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11247, "nodeType": "ExpressionStatement", "src": "6154:51:35" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11250, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6237:1:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11249, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6229:7:35", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 11251, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6229:10:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11252, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11216, "src": "6241:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11253, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11218, "src": "6250:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11248, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11461, "src": "6220:8:35", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11254, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6220:37:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11255, "nodeType": "EmitStatement", "src": "6215:42:35" } ] }, "documentation": "@dev Creates `amount` tokens and assigns them to `account`, increasing\nthe total supply.\n * Emits a {Transfer} event with `from` set to the zero address.\n * Requirements\n * - `to` cannot be the zero address.", "id": 11257, "implemented": true, "kind": "function", "modifiers": [], "name": "_mint", "nodeType": "FunctionDefinition", "parameters": { "id": 11219, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11216, "name": "account", "nodeType": "VariableDeclaration", "scope": 11257, "src": "5977:15:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11215, "name": "address", "nodeType": "ElementaryTypeName", "src": "5977:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11218, "name": "amount", "nodeType": "VariableDeclaration", "scope": 11257, "src": "5994:14:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11217, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "5994:7:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "5976:33:35" }, "returnParameters": { "id": 11220, "nodeType": "ParameterList", "parameters": [], "src": "6019:0:35" }, "scope": 11373, "src": "5962:302:35", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 11300, "nodeType": "Block", "src": "6641:285:35", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 11269, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 11265, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11259, "src": "6659:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11267, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6678:1:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11266, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6670:7:35", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 11268, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6670:10:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "src": "6659:21:35", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "45524332303a206275726e2066726f6d20746865207a65726f2061646472657373", "id": 11270, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "6682:35:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_b16788493b576042bb52c50ed56189e0b250db113c7bfb1c3897d25cf9632d7f", "typeString": "literal_string \"ERC20: burn from the zero address\"" }, "value": "ERC20: burn from the zero address" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_b16788493b576042bb52c50ed56189e0b250db113c7bfb1c3897d25cf9632d7f", "typeString": "literal_string \"ERC20: burn from the zero address\"" } ], "id": 11264, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 11488, 11489 ], "referencedDeclaration": 11489, "src": "6651:7:35", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11271, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6651:67:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11272, "nodeType": "ExpressionStatement", "src": "6651:67:35" }, { "expression": { "argumentTypes": null, "id": 11283, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11273, "name": "_balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10984, "src": "6729:9:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11275, "indexExpression": { "argumentTypes": null, "id": 11274, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11259, "src": "6739:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "6729:18:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11280, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11261, "src": "6773:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "hexValue": "45524332303a206275726e20616d6f756e7420657863656564732062616c616e6365", "id": 11281, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "6781:36:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_149b126e7125232b4200af45303d04fba8b74653b1a295a6a561a528c33fefdd", "typeString": "literal_string \"ERC20: burn amount exceeds balance\"" }, "value": "ERC20: burn amount exceeds balance" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_stringliteral_149b126e7125232b4200af45303d04fba8b74653b1a295a6a561a528c33fefdd", "typeString": "literal_string \"ERC20: burn amount exceeds balance\"" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11276, "name": "_balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10984, "src": "6750:9:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11278, "indexExpression": { "argumentTypes": null, "id": 11277, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11259, "src": "6760:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "6750:18:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11279, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 10737, "src": "6750:22:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$_t_string_memory_ptr_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256,string memory) pure returns (uint256)" } }, "id": 11282, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6750:68:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "6729:89:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11284, "nodeType": "ExpressionStatement", "src": "6729:89:35" }, { "expression": { "argumentTypes": null, "id": 11290, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 11285, "name": "_totalSupply", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10992, "src": "6828:12:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11288, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11261, "src": "6860:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 11286, "name": "_totalSupply", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10992, "src": "6843:12:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11287, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 10710, "src": "6843:16:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 11289, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6843:24:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "6828:39:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11291, "nodeType": "ExpressionStatement", "src": "6828:39:35" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11293, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11259, "src": "6891:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11295, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6908:1:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11294, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6900:7:35", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 11296, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6900:10:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11297, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11261, "src": "6912:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11292, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11461, "src": "6882:8:35", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11298, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6882:37:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11299, "nodeType": "EmitStatement", "src": "6877:42:35" } ] }, "documentation": "@dev Destroys `amount` tokens from `account`, reducing the\ntotal supply.\n * Emits a {Transfer} event with `to` set to the zero address.\n * Requirements\n * - `account` cannot be the zero address.\n- `account` must have at least `amount` tokens.", "id": 11301, "implemented": true, "kind": "function", "modifiers": [], "name": "_burn", "nodeType": "FunctionDefinition", "parameters": { "id": 11262, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11259, "name": "account", "nodeType": "VariableDeclaration", "scope": 11301, "src": "6599:15:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11258, "name": "address", "nodeType": "ElementaryTypeName", "src": "6599:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11261, "name": "amount", "nodeType": "VariableDeclaration", "scope": 11301, "src": "6616:14:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11260, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "6616:7:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "6598:33:35" }, "returnParameters": { "id": 11263, "nodeType": "ParameterList", "parameters": [], "src": "6641:0:35" }, "scope": 11373, "src": "6584:342:35", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 11342, "nodeType": "Block", "src": "7426:257:35", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 11315, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 11311, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11303, "src": "7444:5:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11313, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "7461:1:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11312, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "7453:7:35", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 11314, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7453:10:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "src": "7444:19:35", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "45524332303a20617070726f76652066726f6d20746865207a65726f2061646472657373", "id": 11316, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "7465:38:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_c953f4879035ed60e766b34720f656aab5c697b141d924c283124ecedb91c208", "typeString": "literal_string \"ERC20: approve from the zero address\"" }, "value": "ERC20: approve from the zero address" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_c953f4879035ed60e766b34720f656aab5c697b141d924c283124ecedb91c208", "typeString": "literal_string \"ERC20: approve from the zero address\"" } ], "id": 11310, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 11488, 11489 ], "referencedDeclaration": 11489, "src": "7436:7:35", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11317, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7436:68:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11318, "nodeType": "ExpressionStatement", "src": "7436:68:35" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 11324, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 11320, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11305, "src": "7522:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11322, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "7541:1:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11321, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "7533:7:35", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 11323, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7533:10:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "src": "7522:21:35", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "45524332303a20617070726f766520746f20746865207a65726f2061646472657373", "id": 11325, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "7545:36:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_24883cc5fe64ace9d0df1893501ecb93c77180f0ff69cca79affb3c316dc8029", "typeString": "literal_string \"ERC20: approve to the zero address\"" }, "value": "ERC20: approve to the zero address" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_24883cc5fe64ace9d0df1893501ecb93c77180f0ff69cca79affb3c316dc8029", "typeString": "literal_string \"ERC20: approve to the zero address\"" } ], "id": 11319, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 11488, 11489 ], "referencedDeclaration": 11489, "src": "7514:7:35", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11326, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7514:68:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11327, "nodeType": "ExpressionStatement", "src": "7514:68:35" }, { "expression": { "argumentTypes": null, "id": 11334, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11328, "name": "_allowances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10990, "src": "7593:11:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 11331, "indexExpression": { "argumentTypes": null, "id": 11329, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11303, "src": "7605:5:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "7593:18:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11332, "indexExpression": { "argumentTypes": null, "id": 11330, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11305, "src": "7612:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "7593:27:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 11333, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11307, "src": "7623:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7593:36:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11335, "nodeType": "ExpressionStatement", "src": "7593:36:35" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11337, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11303, "src": "7653:5:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11338, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11305, "src": "7660:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11339, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11307, "src": "7669:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11336, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11469, "src": "7644:8:35", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11340, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7644:32:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11341, "nodeType": "EmitStatement", "src": "7639:37:35" } ] }, "documentation": "@dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.\n * This is internal function is equivalent to `approve`, and can be used to\ne.g. set automatic allowances for certain subsystems, etc.\n * Emits an {Approval} event.\n * Requirements:\n * - `owner` cannot be the zero address.\n- `spender` cannot be the zero address.", "id": 11343, "implemented": true, "kind": "function", "modifiers": [], "name": "_approve", "nodeType": "FunctionDefinition", "parameters": { "id": 11308, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11303, "name": "owner", "nodeType": "VariableDeclaration", "scope": 11343, "src": "7369:13:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11302, "name": "address", "nodeType": "ElementaryTypeName", "src": "7369:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11305, "name": "spender", "nodeType": "VariableDeclaration", "scope": 11343, "src": "7384:15:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11304, "name": "address", "nodeType": "ElementaryTypeName", "src": "7384:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11307, "name": "amount", "nodeType": "VariableDeclaration", "scope": 11343, "src": "7401:14:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11306, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "7401:7:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "7368:48:35" }, "returnParameters": { "id": 11309, "nodeType": "ParameterList", "parameters": [], "src": "7426:0:35" }, "scope": 11373, "src": "7351:332:35", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 11371, "nodeType": "Block", "src": "7922:168:35", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11351, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11345, "src": "7938:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11352, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11347, "src": "7947:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11350, "name": "_burn", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11301, "src": "7932:5:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 11353, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7932:22:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11354, "nodeType": "ExpressionStatement", "src": "7932:22:35" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11356, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11345, "src": "7973:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 11357, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10467, "src": "7982:10:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 11358, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7982:12:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11366, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11347, "src": "8035:6:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "hexValue": "45524332303a206275726e20616d6f756e74206578636565647320616c6c6f77616e6365", "id": 11367, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "8043:38:35", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_a287c363786607a1457a2d9d12fa61c0073358e02d76b4035fc2c2d86a19c0db", "typeString": "literal_string \"ERC20: burn amount exceeds allowance\"" }, "value": "ERC20: burn amount exceeds allowance" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_stringliteral_a287c363786607a1457a2d9d12fa61c0073358e02d76b4035fc2c2d86a19c0db", "typeString": "literal_string \"ERC20: burn amount exceeds allowance\"" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11359, "name": "_allowances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10990, "src": "7996:11:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 11361, "indexExpression": { "argumentTypes": null, "id": 11360, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11345, "src": "8008:7:35", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "7996:20:35", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 11364, "indexExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 11362, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10467, "src": "8017:10:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 11363, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8017:12:35", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "7996:34:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11365, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 10737, "src": "7996:38:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$_t_string_memory_ptr_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256,string memory) pure returns (uint256)" } }, "id": 11368, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7996:86:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11355, "name": "_approve", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11343, "src": "7964:8:35", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11369, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7964:119:35", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11370, "nodeType": "ExpressionStatement", "src": "7964:119:35" } ] }, "documentation": "@dev Destroys `amount` tokens from `account`.`amount` is then deducted\nfrom the caller's allowance.\n * See {_burn} and {_approve}.", "id": 11372, "implemented": true, "kind": "function", "modifiers": [], "name": "_burnFrom", "nodeType": "FunctionDefinition", "parameters": { "id": 11348, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11345, "name": "account", "nodeType": "VariableDeclaration", "scope": 11372, "src": "7880:15:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11344, "name": "address", "nodeType": "ElementaryTypeName", "src": "7880:7:35", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11347, "name": "amount", "nodeType": "VariableDeclaration", "scope": 11372, "src": "7897:14:35", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11346, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "7897:7:35", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "7879:33:35" }, "returnParameters": { "id": 11349, "nodeType": "ParameterList", "parameters": [], "src": "7922:0:35" }, "scope": 11373, "src": "7861:229:35", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" } ], "scope": 11374, "src": "1268:6824:35" } ], "src": "0:8093:35" }, "compiler": { "name": "solc", "version": "0.5.12+commit.7709ece9.Emscripten.clang" }, "networks": {}, "schemaVersion": "3.0.21", "updatedAt": "2020-04-22T17:31:54.570Z", "devdoc": { "details": "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 {ERC20Mintable}. * 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 guidelines: functions revert instead of 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}.", "methods": { "allowance(address,address)": { "details": "See {IERC20-allowance}." }, "approve(address,uint256)": { "details": "See {IERC20-approve}. * Requirements: * - `spender` cannot be the zero address." }, "balanceOf(address)": { "details": "See {IERC20-balanceOf}." }, "decreaseAllowance(address,uint256)": { "details": "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`." }, "increaseAllowance(address,uint256)": { "details": "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." }, "totalSupply()": { "details": "See {IERC20-totalSupply}." }, "transfer(address,uint256)": { "details": "See {IERC20-transfer}. * Requirements: * - `recipient` cannot be the zero address. - the caller must have a balance of at least `amount`." }, "transferFrom(address,address,uint256)": { "details": "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`." } } }, "userdoc": { "methods": {} } }