{ "contractName": "StandardToken", "abi": [ { "constant": true, "inputs": [], "name": "totalSupply", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "name": "_owner", "type": "address" } ], "name": "balanceOf", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "name": "_to", "type": "address" }, { "name": "_value", "type": "uint256" } ], "name": "transfer", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "owner", "type": "address" }, { "indexed": true, "name": "spender", "type": "address" }, { "indexed": false, "name": "value", "type": "uint256" } ], "name": "Approval", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "from", "type": "address" }, { "indexed": true, "name": "to", "type": "address" }, { "indexed": false, "name": "value", "type": "uint256" } ], "name": "Transfer", "type": "event" }, { "constant": false, "inputs": [ { "name": "_from", "type": "address" }, { "name": "_to", "type": "address" }, { "name": "_value", "type": "uint256" } ], "name": "transferFrom", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_spender", "type": "address" }, { "name": "_value", "type": "uint256" } ], "name": "approve", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [ { "name": "_owner", "type": "address" }, { "name": "_spender", "type": "address" } ], "name": "allowance", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "name": "_spender", "type": "address" }, { "name": "_addedValue", "type": "uint256" } ], "name": "increaseApproval", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_spender", "type": "address" }, { "name": "_subtractedValue", "type": "uint256" } ], "name": "decreaseApproval", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" } ], "bytecode": 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"source": "pragma solidity ^0.4.24;\n\nimport \"./BasicToken.sol\";\nimport \"./ERC20.sol\";\n\n\n/**\n * @title Standard ERC20 token\n *\n * @dev Implementation of the basic standard token.\n * https://github.com/ethereum/EIPs/issues/20\n * Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol\n */\ncontract StandardToken is ERC20, BasicToken {\n\n mapping (address => mapping (address => uint256)) internal allowed;\n\n\n /**\n * @dev Transfer tokens from one address to another\n * @param _from address The address which you want to send tokens from\n * @param _to address The address which you want to transfer to\n * @param _value uint256 the amount of tokens to be transferred\n */\n function transferFrom(\n address _from,\n address _to,\n uint256 _value\n )\n public\n returns (bool)\n {\n require(_value <= balances[_from]);\n require(_value <= allowed[_from][msg.sender]);\n require(_to != address(0));\n\n balances[_from] = balances[_from].sub(_value);\n balances[_to] = balances[_to].add(_value);\n allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);\n emit Transfer(_from, _to, _value);\n return true;\n }\n\n /**\n * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.\n * Beware that changing an allowance with this method brings the risk that someone may use both the old\n * and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this\n * race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n * @param _spender The address which will spend the funds.\n * @param _value The amount of tokens to be spent.\n */\n function approve(address _spender, uint256 _value) public returns (bool) {\n allowed[msg.sender][_spender] = _value;\n emit Approval(msg.sender, _spender, _value);\n return true;\n }\n\n /**\n * @dev Function to check the amount of tokens that an owner allowed to a spender.\n * @param _owner address The address which owns the funds.\n * @param _spender address The address which will spend the funds.\n * @return A uint256 specifying the amount of tokens still available for the spender.\n */\n function allowance(\n address _owner,\n address _spender\n )\n public\n view\n returns (uint256)\n {\n return allowed[_owner][_spender];\n }\n\n /**\n * @dev Increase the amount of tokens that an owner allowed to a spender.\n * approve should be called when allowed[_spender] == 0. To increment\n * allowed value is better to use this function to avoid 2 calls (and wait until\n * the first transaction is mined)\n * From MonolithDAO Token.sol\n * @param _spender The address which will spend the funds.\n * @param _addedValue The amount of tokens to increase the allowance by.\n */\n function increaseApproval(\n address _spender,\n uint256 _addedValue\n )\n public\n returns (bool)\n {\n allowed[msg.sender][_spender] = (\n allowed[msg.sender][_spender].add(_addedValue));\n emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);\n return true;\n }\n\n /**\n * @dev Decrease the amount of tokens that an owner allowed to a spender.\n * approve should be called when allowed[_spender] == 0. To decrement\n * allowed value is better to use this function to avoid 2 calls (and wait until\n * the first transaction is mined)\n * From MonolithDAO Token.sol\n * @param _spender The address which will spend the funds.\n * @param _subtractedValue The amount of tokens to decrease the allowance by.\n */\n function decreaseApproval(\n address _spender,\n uint256 _subtractedValue\n )\n public\n returns (bool)\n {\n uint256 oldValue = allowed[msg.sender][_spender];\n if (_subtractedValue >= oldValue) {\n allowed[msg.sender][_spender] = 0;\n } else {\n allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);\n }\n emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);\n return true;\n }\n\n}\n", "sourcePath": "zeppelin-solidity/contracts/token/ERC20/StandardToken.sol", "ast": { "absolutePath": "zeppelin-solidity/contracts/token/ERC20/StandardToken.sol", "exportedSymbols": { "StandardToken": [ 7647 ] }, "id": 7648, "nodeType": "SourceUnit", "nodes": [ { "id": 7402, "literals": [ "solidity", "^", "0.4", ".24" ], "nodeType": "PragmaDirective", "src": "0:24:51" }, { "absolutePath": "zeppelin-solidity/contracts/token/ERC20/BasicToken.sol", "file": "./BasicToken.sol", "id": 7403, "nodeType": "ImportDirective", "scope": 7648, "sourceUnit": 6999, "src": "26:26:51", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "zeppelin-solidity/contracts/token/ERC20/ERC20.sol", "file": "./ERC20.sol", "id": 7404, "nodeType": "ImportDirective", "scope": 7648, "sourceUnit": 7113, "src": "53:21:51", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 7405, "name": "ERC20", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 7112, "src": "360:5:51", "typeDescriptions": { "typeIdentifier": "t_contract$_ERC20_$7112", "typeString": "contract ERC20" } }, "id": 7406, "nodeType": "InheritanceSpecifier", "src": "360:5:51" }, { "arguments": null, "baseName": { "contractScope": null, "id": 7407, "name": "BasicToken", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 6998, "src": "367:10:51", "typeDescriptions": { "typeIdentifier": "t_contract$_BasicToken_$6998", "typeString": "contract BasicToken" } }, "id": 7408, "nodeType": "InheritanceSpecifier", "src": "367:10:51" } ], "contractDependencies": [ 6998, 7112, 7144 ], "contractKind": "contract", "documentation": "@title Standard ERC20 token\n * @dev Implementation of the basic standard token.\nhttps://github.com/ethereum/EIPs/issues/20\nBased on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol", "fullyImplemented": true, "id": 7647, "linearizedBaseContracts": [ 7647, 6998, 7112, 7144 ], "name": "StandardToken", "nodeType": "ContractDefinition", "nodes": [ { "constant": false, "id": 7414, "name": "allowed", "nodeType": "VariableDeclaration", "scope": 7647, "src": "383:66:51", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" }, "typeName": { "id": 7413, "keyType": { "id": 7409, "name": "address", "nodeType": "ElementaryTypeName", "src": "392:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "383:49:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" }, "valueType": { "id": 7412, "keyType": { "id": 7410, "name": "address", "nodeType": "ElementaryTypeName", "src": "412:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "403:28:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "valueType": { "id": 7411, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "423:7:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } } }, "value": null, "visibility": "internal" }, { "body": { "id": 7499, "nodeType": "Block", "src": "840:356:51", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 7430, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 7426, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7420, "src": "854:6:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<=", "rightExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7427, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6915, "src": "864:8:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7429, "indexExpression": { "argumentTypes": null, "id": 7428, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7416, "src": "873:5:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "864:15:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "854:25:51", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 7425, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 7665, 7666 ], "referencedDeclaration": 7665, "src": "846:7:51", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 7431, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "846:34:51", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 7432, "nodeType": "ExpressionStatement", "src": "846:34:51" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 7441, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 7434, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7420, "src": "894:6:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<=", "rightExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7435, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7414, "src": "904:7:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 7437, "indexExpression": { "argumentTypes": null, "id": 7436, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7416, "src": "912:5:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "904:14:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7440, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7438, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "919:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7439, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "919:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "904:26:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "894:36:51", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 7433, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 7665, 7666 ], "referencedDeclaration": 7665, "src": "886:7:51", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 7442, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "886:45:51", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 7443, "nodeType": "ExpressionStatement", "src": "886:45:51" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 7449, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 7445, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7418, "src": "945:3:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 7447, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "960:1:51", "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": 7446, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "952:7:51", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 7448, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "952:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "945:17:51", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 7444, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 7665, 7666 ], "referencedDeclaration": 7665, "src": "937:7:51", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 7450, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "937:26:51", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 7451, "nodeType": "ExpressionStatement", "src": "937:26:51" }, { "expression": { "argumentTypes": null, "id": 7461, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7452, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6915, "src": "970:8:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7454, "indexExpression": { "argumentTypes": null, "id": 7453, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7416, "src": "979:5:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "970:15:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 7459, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7420, "src": "1008:6:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7455, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6915, "src": "988:8:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7457, "indexExpression": { "argumentTypes": null, "id": 7456, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7416, "src": "997:5:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "988:15:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 7458, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 6791, "src": "988:19:51", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 7460, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "988:27:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "970:45:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 7462, "nodeType": "ExpressionStatement", "src": "970:45:51" }, { "expression": { "argumentTypes": null, "id": 7472, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7463, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6915, "src": "1021:8:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7465, "indexExpression": { "argumentTypes": null, "id": 7464, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7418, "src": "1030:3:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1021:13:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 7470, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7420, "src": "1055:6:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7466, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6915, "src": "1037:8:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7468, "indexExpression": { "argumentTypes": null, "id": 7467, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7418, "src": "1046:3:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1037:13:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 7469, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 6815, "src": "1037:17:51", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 7471, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1037:25:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1021:41:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 7473, "nodeType": "ExpressionStatement", "src": "1021:41:51" }, { "expression": { "argumentTypes": null, "id": 7489, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7474, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7414, "src": "1068:7:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 7478, "indexExpression": { "argumentTypes": null, "id": 7475, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7416, "src": "1076:5:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1068:14:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7479, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7476, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "1083:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7477, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1083:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1068:26:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 7487, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7420, "src": "1128:6:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7480, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7414, "src": "1097:7:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 7482, "indexExpression": { "argumentTypes": null, "id": 7481, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7416, "src": "1105:5:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1097:14:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7485, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7483, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "1112:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7484, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1112:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1097:26:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 7486, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 6791, "src": "1097:30:51", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 7488, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1097:38:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1068:67:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 7490, "nodeType": "ExpressionStatement", "src": "1068:67:51" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 7492, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7416, "src": "1155:5:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 7493, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7418, "src": "1162:3:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 7494, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7420, "src": "1167:6:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 7491, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7143, "src": "1146:8:51", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 7495, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1146:28:51", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 7496, "nodeType": "EmitStatement", "src": "1141:33:51" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 7497, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "1187:4:51", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 7424, "id": 7498, "nodeType": "Return", "src": "1180:11:51" } ] }, "documentation": "@dev Transfer tokens from one address to another\n@param _from address The address which you want to send tokens from\n@param _to address The address which you want to transfer to\n@param _value uint256 the amount of tokens to be transferred", "id": 7500, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "transferFrom", "nodeType": "FunctionDefinition", "parameters": { "id": 7421, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7416, "name": "_from", "nodeType": "VariableDeclaration", "scope": 7500, "src": "753:13:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 7415, "name": "address", "nodeType": "ElementaryTypeName", "src": "753:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 7418, "name": "_to", "nodeType": "VariableDeclaration", "scope": 7500, "src": "772:11:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 7417, "name": "address", "nodeType": "ElementaryTypeName", "src": "772:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 7420, "name": "_value", "nodeType": "VariableDeclaration", "scope": 7500, "src": "789:14:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 7419, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "789:7:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "747:60:51" }, "payable": false, "returnParameters": { "id": 7424, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7423, "name": "", "nodeType": "VariableDeclaration", "scope": 7500, "src": "832:4:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 7422, "name": "bool", "nodeType": "ElementaryTypeName", "src": "832:4:51", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "831:6:51" }, "scope": 7647, "src": "726:470:51", "stateMutability": "nonpayable", "superFunction": 7094, "visibility": "public" }, { "body": { "id": 7527, "nodeType": "Block", "src": "1887:115:51", "statements": [ { "expression": { "argumentTypes": null, "id": 7516, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7509, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7414, "src": "1893:7:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 7513, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7510, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "1901:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7511, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1901:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1893:19:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7514, "indexExpression": { "argumentTypes": null, "id": 7512, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7502, "src": "1913:8:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1893:29:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 7515, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7504, "src": "1925:6:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1893:38:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 7517, "nodeType": "ExpressionStatement", "src": "1893:38:51" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7519, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "1951:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7520, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1951:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 7521, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7502, "src": "1963:8:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 7522, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7504, "src": "1973:6:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 7518, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7111, "src": "1942:8:51", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 7523, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1942:38:51", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 7524, "nodeType": "EmitStatement", "src": "1937:43:51" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 7525, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "1993:4:51", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 7508, "id": 7526, "nodeType": "Return", "src": "1986:11:51" } ] }, "documentation": "@dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.\nBeware that changing an allowance with this method brings the risk that someone may use both the old\nand the new allowance by unfortunate transaction ordering. One possible solution to mitigate this\nrace condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:\nhttps://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n@param _spender The address which will spend the funds.\n@param _value The amount of tokens to be spent.", "id": 7528, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "approve", "nodeType": "FunctionDefinition", "parameters": { "id": 7505, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7502, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 7528, "src": "1831:16:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 7501, "name": "address", "nodeType": "ElementaryTypeName", "src": "1831:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 7504, "name": "_value", "nodeType": "VariableDeclaration", "scope": 7528, "src": "1849:14:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 7503, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1849:7:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "1830:34:51" }, "payable": false, "returnParameters": { "id": 7508, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7507, "name": "", "nodeType": "VariableDeclaration", "scope": 7528, "src": "1881:4:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 7506, "name": "bool", "nodeType": "ElementaryTypeName", "src": "1881:4:51", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "1880:6:51" }, "scope": 7647, "src": "1814:188:51", "stateMutability": "nonpayable", "superFunction": 7103, "visibility": "public" }, { "body": { "id": 7543, "nodeType": "Block", "src": "2431:43:51", "statements": [ { "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7537, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7414, "src": "2444:7:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 7539, "indexExpression": { "argumentTypes": null, "id": 7538, "name": "_owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7530, "src": "2452:6:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "2444:15:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7541, "indexExpression": { "argumentTypes": null, "id": 7540, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7532, "src": "2460:8:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "2444:25:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 7536, "id": 7542, "nodeType": "Return", "src": "2437:32:51" } ] }, "documentation": "@dev Function to check the amount of tokens that an owner allowed to a spender.\n@param _owner address The address which owns the funds.\n@param _spender address The address which will spend the funds.\n@return A uint256 specifying the amount of tokens still available for the spender.", "id": 7544, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "allowance", "nodeType": "FunctionDefinition", "parameters": { "id": 7533, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7530, "name": "_owner", "nodeType": "VariableDeclaration", "scope": 7544, "src": "2345:14:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 7529, "name": "address", "nodeType": "ElementaryTypeName", "src": "2345:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 7532, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 7544, "src": "2365:16:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 7531, "name": "address", "nodeType": "ElementaryTypeName", "src": "2365:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "2339:47:51" }, "payable": false, "returnParameters": { "id": 7536, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7535, "name": "", "nodeType": "VariableDeclaration", "scope": 7544, "src": "2420:7:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 7534, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2420:7:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2419:9:51" }, "scope": 7647, "src": "2321:153:51", "stateMutability": "view", "superFunction": 7083, "visibility": "public" }, { "body": { "id": 7585, "nodeType": "Block", "src": "3035:187:51", "statements": [ { "expression": { "argumentTypes": null, "id": 7569, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7553, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7414, "src": "3041:7:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 7557, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7554, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "3049:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7555, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3049:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3041:19:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7558, "indexExpression": { "argumentTypes": null, "id": 7556, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7546, "src": "3061:8:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3041:29:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "components": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 7566, "name": "_addedValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7548, "src": "3115:11:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7559, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7414, "src": "3081:7:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 7562, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7560, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "3089:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7561, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3089:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3081:19:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7564, "indexExpression": { "argumentTypes": null, "id": 7563, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7546, "src": "3101:8:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3081:29:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 7565, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 6815, "src": "3081:33:51", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 7567, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3081:46:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 7568, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "3073:55:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3041:87:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 7570, "nodeType": "ExpressionStatement", "src": "3041:87:51" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7572, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "3148:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7573, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3148:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 7574, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7546, "src": "3160:8:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7575, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7414, "src": "3170:7:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 7578, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7576, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "3178:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7577, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3178:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3170:19:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7580, "indexExpression": { "argumentTypes": null, "id": 7579, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7546, "src": "3190:8:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3170:29:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 7571, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7111, "src": "3139:8:51", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 7581, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3139:61:51", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 7582, "nodeType": "EmitStatement", "src": "3134:66:51" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 7583, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "3213:4:51", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 7552, "id": 7584, "nodeType": "Return", "src": "3206:11:51" } ] }, "documentation": "@dev Increase the amount of tokens that an owner allowed to a spender.\napprove should be called when allowed[_spender] == 0. To increment\nallowed value is better to use this function to avoid 2 calls (and wait until\nthe first transaction is mined)\nFrom MonolithDAO Token.sol\n@param _spender The address which will spend the funds.\n@param _addedValue The amount of tokens to increase the allowance by.", "id": 7586, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "increaseApproval", "nodeType": "FunctionDefinition", "parameters": { "id": 7549, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7546, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 7586, "src": "2957:16:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 7545, "name": "address", "nodeType": "ElementaryTypeName", "src": "2957:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 7548, "name": "_addedValue", "nodeType": "VariableDeclaration", "scope": 7586, "src": "2979:19:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 7547, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2979:7:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2951:51:51" }, "payable": false, "returnParameters": { "id": 7552, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7551, "name": "", "nodeType": "VariableDeclaration", "scope": 7586, "src": "3027:4:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 7550, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3027:4:51", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "3026:6:51" }, "scope": 7647, "src": "2926:296:51", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" }, { "body": { "id": 7645, "nodeType": "Block", "src": "3793:318:51", "statements": [ { "assignments": [ 7596 ], "declarations": [ { "constant": false, "id": 7596, "name": "oldValue", "nodeType": "VariableDeclaration", "scope": 7646, "src": "3799:16:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 7595, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3799:7:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 7603, "initialValue": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7597, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7414, "src": "3818:7:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 7600, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7598, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "3826:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7599, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3826:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3818:19:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7602, "indexExpression": { "argumentTypes": null, "id": 7601, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7588, "src": "3838:8:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3818:29:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "3799:48:51" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 7606, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 7604, "name": "_subtractedValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7590, "src": "3857:16:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "argumentTypes": null, "id": 7605, "name": "oldValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7596, "src": "3877:8:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3857:28:51", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 7629, "nodeType": "Block", "src": "3941:77:51", "statements": [ { "expression": { "argumentTypes": null, "id": 7627, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7617, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7414, "src": "3949:7:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 7621, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7618, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "3957:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7619, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3957:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3949:19:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7622, "indexExpression": { "argumentTypes": null, "id": 7620, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7588, "src": "3969:8:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3949:29:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 7625, "name": "_subtractedValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7590, "src": "3994:16:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 7623, "name": "oldValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7596, "src": "3981:8:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 7624, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 6791, "src": "3981:12:51", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 7626, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3981:30:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3949:62:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 7628, "nodeType": "ExpressionStatement", "src": "3949:62:51" } ] }, "id": 7630, "nodeType": "IfStatement", "src": "3853:165:51", "trueBody": { "id": 7616, "nodeType": "Block", "src": "3887:48:51", "statements": [ { "expression": { "argumentTypes": null, "id": 7614, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7607, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7414, "src": "3895:7:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 7611, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7608, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "3903:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7609, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3903:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3895:19:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7612, "indexExpression": { "argumentTypes": null, "id": 7610, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7588, "src": "3915:8:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3895:29:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "hexValue": "30", "id": 7613, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3927:1:51", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "3895:33:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 7615, "nodeType": "ExpressionStatement", "src": "3895:33:51" } ] } }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7632, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "4037:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7633, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4037:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 7634, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7588, "src": "4049:8:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7635, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7414, "src": "4059:7:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 7638, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7636, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "4067:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7637, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4067:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "4059:19:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7640, "indexExpression": { "argumentTypes": null, "id": 7639, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7588, "src": "4079:8:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "4059:29:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 7631, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7111, "src": "4028:8:51", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 7641, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4028:61:51", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 7642, "nodeType": "EmitStatement", "src": "4023:66:51" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 7643, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "4102:4:51", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 7594, "id": 7644, "nodeType": "Return", "src": "4095:11:51" } ] }, "documentation": "@dev Decrease the amount of tokens that an owner allowed to a spender.\napprove should be called when allowed[_spender] == 0. To decrement\nallowed value is better to use this function to avoid 2 calls (and wait until\nthe first transaction is mined)\nFrom MonolithDAO Token.sol\n@param _spender The address which will spend the funds.\n@param _subtractedValue The amount of tokens to decrease the allowance by.", "id": 7646, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "decreaseApproval", "nodeType": "FunctionDefinition", "parameters": { "id": 7591, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7588, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 7646, "src": "3710:16:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 7587, "name": "address", "nodeType": "ElementaryTypeName", "src": "3710:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 7590, "name": "_subtractedValue", "nodeType": "VariableDeclaration", "scope": 7646, "src": "3732:24:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 7589, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3732:7:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "3704:56:51" }, "payable": false, "returnParameters": { "id": 7594, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7593, "name": "", "nodeType": "VariableDeclaration", "scope": 7646, "src": "3785:4:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 7592, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3785:4:51", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "3784:6:51" }, "scope": 7647, "src": "3679:432:51", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" } ], "scope": 7648, "src": "334:3780:51" } ], "src": "0:4115:51" }, "legacyAST": { "absolutePath": "zeppelin-solidity/contracts/token/ERC20/StandardToken.sol", "exportedSymbols": { "StandardToken": [ 7647 ] }, "id": 7648, "nodeType": "SourceUnit", "nodes": [ { "id": 7402, "literals": [ "solidity", "^", "0.4", ".24" ], "nodeType": "PragmaDirective", "src": "0:24:51" }, { "absolutePath": "zeppelin-solidity/contracts/token/ERC20/BasicToken.sol", "file": "./BasicToken.sol", "id": 7403, "nodeType": "ImportDirective", "scope": 7648, "sourceUnit": 6999, "src": "26:26:51", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "zeppelin-solidity/contracts/token/ERC20/ERC20.sol", "file": "./ERC20.sol", "id": 7404, "nodeType": "ImportDirective", "scope": 7648, "sourceUnit": 7113, "src": "53:21:51", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 7405, "name": "ERC20", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 7112, "src": "360:5:51", "typeDescriptions": { "typeIdentifier": "t_contract$_ERC20_$7112", "typeString": "contract ERC20" } }, "id": 7406, "nodeType": "InheritanceSpecifier", "src": "360:5:51" }, { "arguments": null, "baseName": { "contractScope": null, "id": 7407, "name": "BasicToken", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 6998, "src": "367:10:51", "typeDescriptions": { "typeIdentifier": "t_contract$_BasicToken_$6998", "typeString": "contract BasicToken" } }, "id": 7408, "nodeType": "InheritanceSpecifier", "src": "367:10:51" } ], "contractDependencies": [ 6998, 7112, 7144 ], "contractKind": "contract", "documentation": "@title Standard ERC20 token\n * @dev Implementation of the basic standard token.\nhttps://github.com/ethereum/EIPs/issues/20\nBased on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol", "fullyImplemented": true, "id": 7647, "linearizedBaseContracts": [ 7647, 6998, 7112, 7144 ], "name": "StandardToken", "nodeType": "ContractDefinition", "nodes": [ { "constant": false, "id": 7414, "name": "allowed", "nodeType": "VariableDeclaration", "scope": 7647, "src": "383:66:51", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" }, "typeName": { "id": 7413, "keyType": { "id": 7409, "name": "address", "nodeType": "ElementaryTypeName", "src": "392:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "383:49:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" }, "valueType": { "id": 7412, "keyType": { "id": 7410, "name": "address", "nodeType": "ElementaryTypeName", "src": "412:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "403:28:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "valueType": { "id": 7411, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "423:7:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } } }, "value": null, "visibility": "internal" }, { "body": { "id": 7499, "nodeType": "Block", "src": "840:356:51", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 7430, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 7426, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7420, "src": "854:6:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<=", "rightExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7427, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6915, "src": "864:8:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7429, "indexExpression": { "argumentTypes": null, "id": 7428, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7416, "src": "873:5:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "864:15:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "854:25:51", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 7425, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 7665, 7666 ], "referencedDeclaration": 7665, "src": "846:7:51", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 7431, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "846:34:51", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 7432, "nodeType": "ExpressionStatement", "src": "846:34:51" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 7441, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 7434, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7420, "src": "894:6:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<=", "rightExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7435, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7414, "src": "904:7:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 7437, "indexExpression": { "argumentTypes": null, "id": 7436, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7416, "src": "912:5:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "904:14:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7440, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7438, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "919:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7439, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "919:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "904:26:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "894:36:51", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 7433, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 7665, 7666 ], "referencedDeclaration": 7665, "src": "886:7:51", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 7442, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "886:45:51", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 7443, "nodeType": "ExpressionStatement", "src": "886:45:51" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 7449, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 7445, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7418, "src": "945:3:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 7447, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "960:1:51", "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": 7446, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "952:7:51", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 7448, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "952:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "945:17:51", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 7444, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 7665, 7666 ], "referencedDeclaration": 7665, "src": "937:7:51", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 7450, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "937:26:51", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 7451, "nodeType": "ExpressionStatement", "src": "937:26:51" }, { "expression": { "argumentTypes": null, "id": 7461, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7452, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6915, "src": "970:8:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7454, "indexExpression": { "argumentTypes": null, "id": 7453, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7416, "src": "979:5:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "970:15:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 7459, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7420, "src": "1008:6:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7455, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6915, "src": "988:8:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7457, "indexExpression": { "argumentTypes": null, "id": 7456, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7416, "src": "997:5:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "988:15:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 7458, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 6791, "src": "988:19:51", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 7460, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "988:27:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "970:45:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 7462, "nodeType": "ExpressionStatement", "src": "970:45:51" }, { "expression": { "argumentTypes": null, "id": 7472, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7463, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6915, "src": "1021:8:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7465, "indexExpression": { "argumentTypes": null, "id": 7464, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7418, "src": "1030:3:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1021:13:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 7470, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7420, "src": "1055:6:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7466, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6915, "src": "1037:8:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7468, "indexExpression": { "argumentTypes": null, "id": 7467, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7418, "src": "1046:3:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1037:13:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 7469, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 6815, "src": "1037:17:51", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 7471, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1037:25:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1021:41:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 7473, "nodeType": "ExpressionStatement", "src": "1021:41:51" }, { "expression": { "argumentTypes": null, "id": 7489, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7474, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7414, "src": "1068:7:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 7478, "indexExpression": { "argumentTypes": null, "id": 7475, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7416, "src": "1076:5:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1068:14:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7479, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7476, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "1083:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7477, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1083:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1068:26:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 7487, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7420, "src": "1128:6:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7480, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7414, "src": "1097:7:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 7482, "indexExpression": { "argumentTypes": null, "id": 7481, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7416, "src": "1105:5:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1097:14:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7485, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7483, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "1112:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7484, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1112:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1097:26:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 7486, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 6791, "src": "1097:30:51", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 7488, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1097:38:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1068:67:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 7490, "nodeType": "ExpressionStatement", "src": "1068:67:51" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 7492, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7416, "src": "1155:5:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 7493, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7418, "src": "1162:3:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 7494, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7420, "src": "1167:6:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 7491, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7143, "src": "1146:8:51", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 7495, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1146:28:51", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 7496, "nodeType": "EmitStatement", "src": "1141:33:51" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 7497, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "1187:4:51", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 7424, "id": 7498, "nodeType": "Return", "src": "1180:11:51" } ] }, "documentation": "@dev Transfer tokens from one address to another\n@param _from address The address which you want to send tokens from\n@param _to address The address which you want to transfer to\n@param _value uint256 the amount of tokens to be transferred", "id": 7500, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "transferFrom", "nodeType": "FunctionDefinition", "parameters": { "id": 7421, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7416, "name": "_from", "nodeType": "VariableDeclaration", "scope": 7500, "src": "753:13:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 7415, "name": "address", "nodeType": "ElementaryTypeName", "src": "753:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 7418, "name": "_to", "nodeType": "VariableDeclaration", "scope": 7500, "src": "772:11:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 7417, "name": "address", "nodeType": "ElementaryTypeName", "src": "772:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 7420, "name": "_value", "nodeType": "VariableDeclaration", "scope": 7500, "src": "789:14:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 7419, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "789:7:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "747:60:51" }, "payable": false, "returnParameters": { "id": 7424, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7423, "name": "", "nodeType": "VariableDeclaration", "scope": 7500, "src": "832:4:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 7422, "name": "bool", "nodeType": "ElementaryTypeName", "src": "832:4:51", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "831:6:51" }, "scope": 7647, "src": "726:470:51", "stateMutability": "nonpayable", "superFunction": 7094, "visibility": "public" }, { "body": { "id": 7527, "nodeType": "Block", "src": "1887:115:51", "statements": [ { "expression": { "argumentTypes": null, "id": 7516, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7509, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7414, "src": "1893:7:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 7513, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7510, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "1901:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7511, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1901:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1893:19:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7514, "indexExpression": { "argumentTypes": null, "id": 7512, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7502, "src": "1913:8:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1893:29:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 7515, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7504, "src": "1925:6:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1893:38:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 7517, "nodeType": "ExpressionStatement", "src": "1893:38:51" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7519, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "1951:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7520, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1951:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 7521, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7502, "src": "1963:8:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 7522, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7504, "src": "1973:6:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 7518, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7111, "src": "1942:8:51", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 7523, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1942:38:51", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 7524, "nodeType": "EmitStatement", "src": "1937:43:51" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 7525, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "1993:4:51", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 7508, "id": 7526, "nodeType": "Return", "src": "1986:11:51" } ] }, "documentation": "@dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.\nBeware that changing an allowance with this method brings the risk that someone may use both the old\nand the new allowance by unfortunate transaction ordering. One possible solution to mitigate this\nrace condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:\nhttps://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n@param _spender The address which will spend the funds.\n@param _value The amount of tokens to be spent.", "id": 7528, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "approve", "nodeType": "FunctionDefinition", "parameters": { "id": 7505, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7502, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 7528, "src": "1831:16:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 7501, "name": "address", "nodeType": "ElementaryTypeName", "src": "1831:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 7504, "name": "_value", "nodeType": "VariableDeclaration", "scope": 7528, "src": "1849:14:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 7503, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1849:7:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "1830:34:51" }, "payable": false, "returnParameters": { "id": 7508, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7507, "name": "", "nodeType": "VariableDeclaration", "scope": 7528, "src": "1881:4:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 7506, "name": "bool", "nodeType": "ElementaryTypeName", "src": "1881:4:51", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "1880:6:51" }, "scope": 7647, "src": "1814:188:51", "stateMutability": "nonpayable", "superFunction": 7103, "visibility": "public" }, { "body": { "id": 7543, "nodeType": "Block", "src": "2431:43:51", "statements": [ { "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7537, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7414, "src": "2444:7:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 7539, "indexExpression": { "argumentTypes": null, "id": 7538, "name": "_owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7530, "src": "2452:6:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "2444:15:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7541, "indexExpression": { "argumentTypes": null, "id": 7540, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7532, "src": "2460:8:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "2444:25:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 7536, "id": 7542, "nodeType": "Return", "src": "2437:32:51" } ] }, "documentation": "@dev Function to check the amount of tokens that an owner allowed to a spender.\n@param _owner address The address which owns the funds.\n@param _spender address The address which will spend the funds.\n@return A uint256 specifying the amount of tokens still available for the spender.", "id": 7544, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "allowance", "nodeType": "FunctionDefinition", "parameters": { "id": 7533, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7530, "name": "_owner", "nodeType": "VariableDeclaration", "scope": 7544, "src": "2345:14:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 7529, "name": "address", "nodeType": "ElementaryTypeName", "src": "2345:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 7532, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 7544, "src": "2365:16:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 7531, "name": "address", "nodeType": "ElementaryTypeName", "src": "2365:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "2339:47:51" }, "payable": false, "returnParameters": { "id": 7536, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7535, "name": "", "nodeType": "VariableDeclaration", "scope": 7544, "src": "2420:7:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 7534, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2420:7:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2419:9:51" }, "scope": 7647, "src": "2321:153:51", "stateMutability": "view", "superFunction": 7083, "visibility": "public" }, { "body": { "id": 7585, "nodeType": "Block", "src": "3035:187:51", "statements": [ { "expression": { "argumentTypes": null, "id": 7569, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7553, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7414, "src": "3041:7:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 7557, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7554, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "3049:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7555, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3049:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3041:19:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7558, "indexExpression": { "argumentTypes": null, "id": 7556, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7546, "src": "3061:8:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3041:29:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "components": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 7566, "name": "_addedValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7548, "src": "3115:11:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7559, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7414, "src": "3081:7:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 7562, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7560, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "3089:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7561, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3089:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3081:19:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7564, "indexExpression": { "argumentTypes": null, "id": 7563, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7546, "src": "3101:8:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3081:29:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 7565, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 6815, "src": "3081:33:51", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 7567, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3081:46:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 7568, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "3073:55:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3041:87:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 7570, "nodeType": "ExpressionStatement", "src": "3041:87:51" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7572, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "3148:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7573, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3148:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 7574, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7546, "src": "3160:8:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7575, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7414, "src": "3170:7:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 7578, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7576, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "3178:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7577, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3178:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3170:19:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7580, "indexExpression": { "argumentTypes": null, "id": 7579, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7546, "src": "3190:8:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3170:29:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 7571, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7111, "src": "3139:8:51", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 7581, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3139:61:51", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 7582, "nodeType": "EmitStatement", "src": "3134:66:51" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 7583, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "3213:4:51", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 7552, "id": 7584, "nodeType": "Return", "src": "3206:11:51" } ] }, "documentation": "@dev Increase the amount of tokens that an owner allowed to a spender.\napprove should be called when allowed[_spender] == 0. To increment\nallowed value is better to use this function to avoid 2 calls (and wait until\nthe first transaction is mined)\nFrom MonolithDAO Token.sol\n@param _spender The address which will spend the funds.\n@param _addedValue The amount of tokens to increase the allowance by.", "id": 7586, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "increaseApproval", "nodeType": "FunctionDefinition", "parameters": { "id": 7549, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7546, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 7586, "src": "2957:16:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 7545, "name": "address", "nodeType": "ElementaryTypeName", "src": "2957:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 7548, "name": "_addedValue", "nodeType": "VariableDeclaration", "scope": 7586, "src": "2979:19:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 7547, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2979:7:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2951:51:51" }, "payable": false, "returnParameters": { "id": 7552, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7551, "name": "", "nodeType": "VariableDeclaration", "scope": 7586, "src": "3027:4:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 7550, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3027:4:51", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "3026:6:51" }, "scope": 7647, "src": "2926:296:51", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" }, { "body": { "id": 7645, "nodeType": "Block", "src": "3793:318:51", "statements": [ { "assignments": [ 7596 ], "declarations": [ { "constant": false, "id": 7596, "name": "oldValue", "nodeType": "VariableDeclaration", "scope": 7646, "src": "3799:16:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 7595, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3799:7:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 7603, "initialValue": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7597, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7414, "src": "3818:7:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 7600, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7598, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "3826:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7599, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3826:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3818:19:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7602, "indexExpression": { "argumentTypes": null, "id": 7601, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7588, "src": "3838:8:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3818:29:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "3799:48:51" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 7606, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 7604, "name": "_subtractedValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7590, "src": "3857:16:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "argumentTypes": null, "id": 7605, "name": "oldValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7596, "src": "3877:8:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3857:28:51", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 7629, "nodeType": "Block", "src": "3941:77:51", "statements": [ { "expression": { "argumentTypes": null, "id": 7627, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7617, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7414, "src": "3949:7:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 7621, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7618, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "3957:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7619, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3957:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3949:19:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7622, "indexExpression": { "argumentTypes": null, "id": 7620, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7588, "src": "3969:8:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3949:29:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 7625, "name": "_subtractedValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7590, "src": "3994:16:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 7623, "name": "oldValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7596, "src": "3981:8:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 7624, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 6791, "src": "3981:12:51", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 7626, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3981:30:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3949:62:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 7628, "nodeType": "ExpressionStatement", "src": "3949:62:51" } ] }, "id": 7630, "nodeType": "IfStatement", "src": "3853:165:51", "trueBody": { "id": 7616, "nodeType": "Block", "src": "3887:48:51", "statements": [ { "expression": { "argumentTypes": null, "id": 7614, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7607, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7414, "src": "3895:7:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 7611, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7608, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "3903:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7609, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3903:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3895:19:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7612, "indexExpression": { "argumentTypes": null, "id": 7610, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7588, "src": "3915:8:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3895:29:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "hexValue": "30", "id": 7613, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3927:1:51", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "3895:33:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 7615, "nodeType": "ExpressionStatement", "src": "3895:33:51" } ] } }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7632, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "4037:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7633, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4037:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 7634, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7588, "src": "4049:8:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 7635, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7414, "src": "4059:7:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 7638, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 7636, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7662, "src": "4067:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 7637, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4067:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "4059:19:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 7640, "indexExpression": { "argumentTypes": null, "id": 7639, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7588, "src": "4079:8:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "4059:29:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 7631, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7111, "src": "4028:8:51", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 7641, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4028:61:51", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 7642, "nodeType": "EmitStatement", "src": "4023:66:51" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 7643, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "4102:4:51", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 7594, "id": 7644, "nodeType": "Return", "src": "4095:11:51" } ] }, "documentation": "@dev Decrease the amount of tokens that an owner allowed to a spender.\napprove should be called when allowed[_spender] == 0. To decrement\nallowed value is better to use this function to avoid 2 calls (and wait until\nthe first transaction is mined)\nFrom MonolithDAO Token.sol\n@param _spender The address which will spend the funds.\n@param _subtractedValue The amount of tokens to decrease the allowance by.", "id": 7646, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "decreaseApproval", "nodeType": "FunctionDefinition", "parameters": { "id": 7591, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7588, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 7646, "src": "3710:16:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 7587, "name": "address", "nodeType": "ElementaryTypeName", "src": "3710:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 7590, "name": "_subtractedValue", "nodeType": "VariableDeclaration", "scope": 7646, "src": "3732:24:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 7589, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3732:7:51", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "3704:56:51" }, "payable": false, "returnParameters": { "id": 7594, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 7593, "name": "", "nodeType": "VariableDeclaration", "scope": 7646, "src": "3785:4:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 7592, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3785:4:51", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "3784:6:51" }, "scope": 7647, "src": "3679:432:51", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" } ], "scope": 7648, "src": "334:3780:51" } ], "src": "0:4115:51" }, "compiler": { "name": "solc", "version": "0.4.24+commit.e67f0147.Emscripten.clang" }, "networks": {}, "schemaVersion": "2.0.1", "updatedAt": "2018-10-24T12:40:22.251Z" }