{ "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": [ 4901 ] }, "id": 4902, "nodeType": "SourceUnit", "nodes": [ { "id": 4656, "literals": [ "solidity", "^", "0.4", ".24" ], "nodeType": "PragmaDirective", "src": "0:24:30" }, { "absolutePath": "zeppelin-solidity/contracts/token/ERC20/BasicToken.sol", "file": "./BasicToken.sol", "id": 4657, "nodeType": "ImportDirective", "scope": 4902, "sourceUnit": 4219, "src": "26:26:30", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "zeppelin-solidity/contracts/token/ERC20/ERC20.sol", "file": "./ERC20.sol", "id": 4658, "nodeType": "ImportDirective", "scope": 4902, "sourceUnit": 4367, "src": "53:21:30", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 4659, "name": "ERC20", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 4366, "src": "360:5:30", "typeDescriptions": { "typeIdentifier": "t_contract$_ERC20_$4366", "typeString": "contract ERC20" } }, "id": 4660, "nodeType": "InheritanceSpecifier", "src": "360:5:30" }, { "arguments": null, "baseName": { "contractScope": null, "id": 4661, "name": "BasicToken", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 4218, "src": "367:10:30", "typeDescriptions": { "typeIdentifier": "t_contract$_BasicToken_$4218", "typeString": "contract BasicToken" } }, "id": 4662, "nodeType": "InheritanceSpecifier", "src": "367:10:30" } ], "contractDependencies": [ 4218, 4366, 4398 ], "contractKind": "contract", "documentation": "@title Standard ERC20 token\n * @dev Implementation of the basic standard token.\nhttps://github.com/ethereum/EIPs/issues/20\nBased on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol", "fullyImplemented": true, "id": 4901, "linearizedBaseContracts": [ 4901, 4218, 4366, 4398 ], "name": "StandardToken", "nodeType": "ContractDefinition", "nodes": [ { "constant": false, "id": 4668, "name": "allowed", "nodeType": "VariableDeclaration", "scope": 4901, "src": "383:66:30", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" }, "typeName": { "id": 4667, "keyType": { "id": 4663, "name": "address", "nodeType": "ElementaryTypeName", "src": "392:7:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "383:49:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" }, "valueType": { "id": 4666, "keyType": { "id": 4664, "name": "address", "nodeType": "ElementaryTypeName", "src": "412:7:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "403:28:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "valueType": { "id": 4665, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "423:7:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } } }, "value": null, "visibility": "internal" }, { "body": { "id": 4753, "nodeType": "Block", "src": "840:356:30", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 4684, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 4680, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4674, "src": "854:6:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<=", "rightExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4681, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4135, "src": "864:8:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4683, "indexExpression": { "argumentTypes": null, "id": 4682, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4670, "src": "873:5:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "864:15:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "854:25:30", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 4679, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4919, 4920 ], "referencedDeclaration": 4919, "src": "846:7:30", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 4685, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "846:34:30", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4686, "nodeType": "ExpressionStatement", "src": "846:34:30" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 4695, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 4688, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4674, "src": "894:6:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<=", "rightExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4689, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4668, "src": "904:7:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4691, "indexExpression": { "argumentTypes": null, "id": 4690, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4670, "src": "912:5:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "904:14:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4694, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4692, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "919:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4693, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "919:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "904:26:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "894:36:30", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 4687, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4919, 4920 ], "referencedDeclaration": 4919, "src": "886:7:30", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 4696, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "886:45:30", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4697, "nodeType": "ExpressionStatement", "src": "886:45:30" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 4703, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 4699, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4672, "src": "945:3:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 4701, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "960:1:30", "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": 4700, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "952:7:30", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 4702, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "952:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "945:17:30", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 4698, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4919, 4920 ], "referencedDeclaration": 4919, "src": "937:7:30", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 4704, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "937:26:30", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4705, "nodeType": "ExpressionStatement", "src": "937:26:30" }, { "expression": { "argumentTypes": null, "id": 4715, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4706, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4135, "src": "970:8:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4708, "indexExpression": { "argumentTypes": null, "id": 4707, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4670, "src": "979:5:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "970:15:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4713, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4674, "src": "1008:6:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4709, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4135, "src": "988:8:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4711, "indexExpression": { "argumentTypes": null, "id": 4710, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4670, "src": "997:5:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "988:15:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4712, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 4011, "src": "988:19:30", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 4714, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "988:27:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "970:45:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4716, "nodeType": "ExpressionStatement", "src": "970:45:30" }, { "expression": { "argumentTypes": null, "id": 4726, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4717, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4135, "src": "1021:8:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4719, "indexExpression": { "argumentTypes": null, "id": 4718, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4672, "src": "1030:3:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1021:13:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4724, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4674, "src": "1055:6:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4720, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4135, "src": "1037:8:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4722, "indexExpression": { "argumentTypes": null, "id": 4721, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4672, "src": "1046:3:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1037:13:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4723, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4035, "src": "1037:17:30", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 4725, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1037:25:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1021:41:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4727, "nodeType": "ExpressionStatement", "src": "1021:41:30" }, { "expression": { "argumentTypes": null, "id": 4743, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4728, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4668, "src": "1068:7:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4732, "indexExpression": { "argumentTypes": null, "id": 4729, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4670, "src": "1076:5:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1068:14:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4733, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4730, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "1083:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4731, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1083:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1068:26:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4741, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4674, "src": "1128:6:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4734, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4668, "src": "1097:7:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4736, "indexExpression": { "argumentTypes": null, "id": 4735, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4670, "src": "1105:5:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1097:14:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4739, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4737, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "1112:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4738, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1112:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1097:26:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4740, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 4011, "src": "1097:30:30", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 4742, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1097:38:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1068:67:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4744, "nodeType": "ExpressionStatement", "src": "1068:67:30" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4746, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4670, "src": "1155:5:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4747, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4672, "src": "1162:3:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4748, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4674, "src": "1167:6:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 4745, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4397, "src": "1146:8:30", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 4749, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1146:28:30", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4750, "nodeType": "EmitStatement", "src": "1141:33:30" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 4751, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "1187:4:30", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 4678, "id": 4752, "nodeType": "Return", "src": "1180:11:30" } ] }, "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": 4754, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "transferFrom", "nodeType": "FunctionDefinition", "parameters": { "id": 4675, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4670, "name": "_from", "nodeType": "VariableDeclaration", "scope": 4754, "src": "753:13:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4669, "name": "address", "nodeType": "ElementaryTypeName", "src": "753:7:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4672, "name": "_to", "nodeType": "VariableDeclaration", "scope": 4754, "src": "772:11:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4671, "name": "address", "nodeType": "ElementaryTypeName", "src": "772:7:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4674, "name": "_value", "nodeType": "VariableDeclaration", "scope": 4754, "src": "789:14:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4673, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "789:7:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "747:60:30" }, "payable": false, "returnParameters": { "id": 4678, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4677, "name": "", "nodeType": "VariableDeclaration", "scope": 4754, "src": "832:4:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 4676, "name": "bool", "nodeType": "ElementaryTypeName", "src": "832:4:30", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "831:6:30" }, "scope": 4901, "src": "726:470:30", "stateMutability": "nonpayable", "superFunction": 4348, "visibility": "public" }, { "body": { "id": 4781, "nodeType": "Block", "src": "1887:115:30", "statements": [ { "expression": { "argumentTypes": null, "id": 4770, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4763, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4668, "src": "1893:7:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4767, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4764, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "1901:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4765, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1901:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1893:19:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4768, "indexExpression": { "argumentTypes": null, "id": 4766, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4756, "src": "1913:8:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1893:29:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 4769, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4758, "src": "1925:6:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1893:38:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4771, "nodeType": "ExpressionStatement", "src": "1893:38:30" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4773, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "1951:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4774, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1951:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4775, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4756, "src": "1963:8:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4776, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4758, "src": "1973:6:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 4772, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4365, "src": "1942:8:30", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 4777, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1942:38:30", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4778, "nodeType": "EmitStatement", "src": "1937:43:30" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 4779, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "1993:4:30", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 4762, "id": 4780, "nodeType": "Return", "src": "1986:11:30" } ] }, "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": 4782, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "approve", "nodeType": "FunctionDefinition", "parameters": { "id": 4759, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4756, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 4782, "src": "1831:16:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4755, "name": "address", "nodeType": "ElementaryTypeName", "src": "1831:7:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4758, "name": "_value", "nodeType": "VariableDeclaration", "scope": 4782, "src": "1849:14:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4757, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1849:7:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "1830:34:30" }, "payable": false, "returnParameters": { "id": 4762, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4761, "name": "", "nodeType": "VariableDeclaration", "scope": 4782, "src": "1881:4:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 4760, "name": "bool", "nodeType": "ElementaryTypeName", "src": "1881:4:30", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "1880:6:30" }, "scope": 4901, "src": "1814:188:30", "stateMutability": "nonpayable", "superFunction": 4357, "visibility": "public" }, { "body": { "id": 4797, "nodeType": "Block", "src": "2431:43:30", "statements": [ { "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4791, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4668, "src": "2444:7:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4793, "indexExpression": { "argumentTypes": null, "id": 4792, "name": "_owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4784, "src": "2452:6:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "2444:15:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4795, "indexExpression": { "argumentTypes": null, "id": 4794, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4786, "src": "2460:8:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "2444:25:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 4790, "id": 4796, "nodeType": "Return", "src": "2437:32:30" } ] }, "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": 4798, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "allowance", "nodeType": "FunctionDefinition", "parameters": { "id": 4787, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4784, "name": "_owner", "nodeType": "VariableDeclaration", "scope": 4798, "src": "2345:14:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4783, "name": "address", "nodeType": "ElementaryTypeName", "src": "2345:7:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4786, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 4798, "src": "2365:16:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4785, "name": "address", "nodeType": "ElementaryTypeName", "src": "2365:7:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "2339:47:30" }, "payable": false, "returnParameters": { "id": 4790, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4789, "name": "", "nodeType": "VariableDeclaration", "scope": 4798, "src": "2420:7:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4788, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2420:7:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2419:9:30" }, "scope": 4901, "src": "2321:153:30", "stateMutability": "view", "superFunction": 4337, "visibility": "public" }, { "body": { "id": 4839, "nodeType": "Block", "src": "3035:187:30", "statements": [ { "expression": { "argumentTypes": null, "id": 4823, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4807, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4668, "src": "3041:7:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4811, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4808, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "3049:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4809, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3049:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3041:19:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4812, "indexExpression": { "argumentTypes": null, "id": 4810, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4800, "src": "3061:8:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3041:29:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "components": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4820, "name": "_addedValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4802, "src": "3115:11:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4813, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4668, "src": "3081:7:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4816, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4814, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "3089:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4815, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3089:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3081:19:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4818, "indexExpression": { "argumentTypes": null, "id": 4817, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4800, "src": "3101:8:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3081:29:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4819, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4035, "src": "3081:33:30", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 4821, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3081:46:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 4822, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "3073:55:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3041:87:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4824, "nodeType": "ExpressionStatement", "src": "3041:87:30" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4826, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "3148:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4827, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3148:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4828, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4800, "src": "3160:8:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4829, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4668, "src": "3170:7:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4832, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4830, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "3178:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4831, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3178:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3170:19:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4834, "indexExpression": { "argumentTypes": null, "id": 4833, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4800, "src": "3190:8:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3170:29:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 4825, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4365, "src": "3139:8:30", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 4835, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3139:61:30", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4836, "nodeType": "EmitStatement", "src": "3134:66:30" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 4837, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "3213:4:30", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 4806, "id": 4838, "nodeType": "Return", "src": "3206:11:30" } ] }, "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": 4840, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "increaseApproval", "nodeType": "FunctionDefinition", "parameters": { "id": 4803, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4800, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 4840, "src": "2957:16:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4799, "name": "address", "nodeType": "ElementaryTypeName", "src": "2957:7:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4802, "name": "_addedValue", "nodeType": "VariableDeclaration", "scope": 4840, "src": "2979:19:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4801, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2979:7:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2951:51:30" }, "payable": false, "returnParameters": { "id": 4806, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4805, "name": "", "nodeType": "VariableDeclaration", "scope": 4840, "src": "3027:4:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 4804, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3027:4:30", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "3026:6:30" }, "scope": 4901, "src": "2926:296:30", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" }, { "body": { "id": 4899, "nodeType": "Block", "src": "3793:318:30", "statements": [ { "assignments": [ 4850 ], "declarations": [ { "constant": false, "id": 4850, "name": "oldValue", "nodeType": "VariableDeclaration", "scope": 4900, "src": "3799:16:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4849, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3799:7:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 4857, "initialValue": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4851, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4668, "src": "3818:7:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4854, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4852, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "3826:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4853, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3826:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3818:19:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4856, "indexExpression": { "argumentTypes": null, "id": 4855, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4842, "src": "3838:8:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3818:29:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "3799:48:30" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 4860, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 4858, "name": "_subtractedValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4844, "src": "3857:16:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "argumentTypes": null, "id": 4859, "name": "oldValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4850, "src": "3877:8:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3857:28:30", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 4883, "nodeType": "Block", "src": "3941:77:30", "statements": [ { "expression": { "argumentTypes": null, "id": 4881, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4871, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4668, "src": "3949:7:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4875, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4872, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "3957:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4873, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3957:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3949:19:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4876, "indexExpression": { "argumentTypes": null, "id": 4874, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4842, "src": "3969:8:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3949:29:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4879, "name": "_subtractedValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4844, "src": "3994:16:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 4877, "name": "oldValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4850, "src": "3981:8:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4878, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 4011, "src": "3981:12:30", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 4880, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3981:30:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3949:62:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4882, "nodeType": "ExpressionStatement", "src": "3949:62:30" } ] }, "id": 4884, "nodeType": "IfStatement", "src": "3853:165:30", "trueBody": { "id": 4870, "nodeType": "Block", "src": "3887:48:30", "statements": [ { "expression": { "argumentTypes": null, "id": 4868, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4861, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4668, "src": "3895:7:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4865, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4862, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "3903:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4863, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3903:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3895:19:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4866, "indexExpression": { "argumentTypes": null, "id": 4864, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4842, "src": "3915:8:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3895:29:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "hexValue": "30", "id": 4867, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3927:1:30", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "3895:33:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4869, "nodeType": "ExpressionStatement", "src": "3895:33:30" } ] } }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4886, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "4037:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4887, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4037:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4888, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4842, "src": "4049:8:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4889, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4668, "src": "4059:7:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4892, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4890, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "4067:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4891, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4067:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "4059:19:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4894, "indexExpression": { "argumentTypes": null, "id": 4893, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4842, "src": "4079:8:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "4059:29:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 4885, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4365, "src": "4028:8:30", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 4895, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4028:61:30", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4896, "nodeType": "EmitStatement", "src": "4023:66:30" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 4897, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "4102:4:30", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 4848, "id": 4898, "nodeType": "Return", "src": "4095:11:30" } ] }, "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": 4900, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "decreaseApproval", "nodeType": "FunctionDefinition", "parameters": { "id": 4845, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4842, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 4900, "src": "3710:16:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4841, "name": "address", "nodeType": "ElementaryTypeName", "src": "3710:7:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4844, "name": "_subtractedValue", "nodeType": "VariableDeclaration", "scope": 4900, "src": "3732:24:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4843, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3732:7:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "3704:56:30" }, "payable": false, "returnParameters": { "id": 4848, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4847, "name": "", "nodeType": "VariableDeclaration", "scope": 4900, "src": "3785:4:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 4846, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3785:4:30", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "3784:6:30" }, "scope": 4901, "src": "3679:432:30", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" } ], "scope": 4902, "src": "334:3780:30" } ], "src": "0:4115:30" }, "legacyAST": { "absolutePath": "zeppelin-solidity/contracts/token/ERC20/StandardToken.sol", "exportedSymbols": { "StandardToken": [ 4901 ] }, "id": 4902, "nodeType": "SourceUnit", "nodes": [ { "id": 4656, "literals": [ "solidity", "^", "0.4", ".24" ], "nodeType": "PragmaDirective", "src": "0:24:30" }, { "absolutePath": "zeppelin-solidity/contracts/token/ERC20/BasicToken.sol", "file": "./BasicToken.sol", "id": 4657, "nodeType": "ImportDirective", "scope": 4902, "sourceUnit": 4219, "src": "26:26:30", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "zeppelin-solidity/contracts/token/ERC20/ERC20.sol", "file": "./ERC20.sol", "id": 4658, "nodeType": "ImportDirective", "scope": 4902, "sourceUnit": 4367, "src": "53:21:30", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 4659, "name": "ERC20", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 4366, "src": "360:5:30", "typeDescriptions": { "typeIdentifier": "t_contract$_ERC20_$4366", "typeString": "contract ERC20" } }, "id": 4660, "nodeType": "InheritanceSpecifier", "src": "360:5:30" }, { "arguments": null, "baseName": { "contractScope": null, "id": 4661, "name": "BasicToken", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 4218, "src": "367:10:30", "typeDescriptions": { "typeIdentifier": "t_contract$_BasicToken_$4218", "typeString": "contract BasicToken" } }, "id": 4662, "nodeType": "InheritanceSpecifier", "src": "367:10:30" } ], "contractDependencies": [ 4218, 4366, 4398 ], "contractKind": "contract", "documentation": "@title Standard ERC20 token\n * @dev Implementation of the basic standard token.\nhttps://github.com/ethereum/EIPs/issues/20\nBased on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol", "fullyImplemented": true, "id": 4901, "linearizedBaseContracts": [ 4901, 4218, 4366, 4398 ], "name": "StandardToken", "nodeType": "ContractDefinition", "nodes": [ { "constant": false, "id": 4668, "name": "allowed", "nodeType": "VariableDeclaration", "scope": 4901, "src": "383:66:30", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" }, "typeName": { "id": 4667, "keyType": { "id": 4663, "name": "address", "nodeType": "ElementaryTypeName", "src": "392:7:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "383:49:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" }, "valueType": { "id": 4666, "keyType": { "id": 4664, "name": "address", "nodeType": "ElementaryTypeName", "src": "412:7:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "403:28:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "valueType": { "id": 4665, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "423:7:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } } }, "value": null, "visibility": "internal" }, { "body": { "id": 4753, "nodeType": "Block", "src": "840:356:30", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 4684, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 4680, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4674, "src": "854:6:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<=", "rightExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4681, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4135, "src": "864:8:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4683, "indexExpression": { "argumentTypes": null, "id": 4682, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4670, "src": "873:5:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "864:15:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "854:25:30", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 4679, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4919, 4920 ], "referencedDeclaration": 4919, "src": "846:7:30", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 4685, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "846:34:30", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4686, "nodeType": "ExpressionStatement", "src": "846:34:30" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 4695, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 4688, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4674, "src": "894:6:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<=", "rightExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4689, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4668, "src": "904:7:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4691, "indexExpression": { "argumentTypes": null, "id": 4690, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4670, "src": "912:5:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "904:14:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4694, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4692, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "919:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4693, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "919:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "904:26:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "894:36:30", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 4687, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4919, 4920 ], "referencedDeclaration": 4919, "src": "886:7:30", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 4696, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "886:45:30", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4697, "nodeType": "ExpressionStatement", "src": "886:45:30" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 4703, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 4699, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4672, "src": "945:3:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 4701, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "960:1:30", "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": 4700, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "952:7:30", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 4702, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "952:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "945:17:30", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 4698, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4919, 4920 ], "referencedDeclaration": 4919, "src": "937:7:30", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 4704, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "937:26:30", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4705, "nodeType": "ExpressionStatement", "src": "937:26:30" }, { "expression": { "argumentTypes": null, "id": 4715, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4706, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4135, "src": "970:8:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4708, "indexExpression": { "argumentTypes": null, "id": 4707, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4670, "src": "979:5:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "970:15:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4713, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4674, "src": "1008:6:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4709, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4135, "src": "988:8:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4711, "indexExpression": { "argumentTypes": null, "id": 4710, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4670, "src": "997:5:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "988:15:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4712, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 4011, "src": "988:19:30", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 4714, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "988:27:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "970:45:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4716, "nodeType": "ExpressionStatement", "src": "970:45:30" }, { "expression": { "argumentTypes": null, "id": 4726, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4717, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4135, "src": "1021:8:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4719, "indexExpression": { "argumentTypes": null, "id": 4718, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4672, "src": "1030:3:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1021:13:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4724, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4674, "src": "1055:6:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4720, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4135, "src": "1037:8:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4722, "indexExpression": { "argumentTypes": null, "id": 4721, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4672, "src": "1046:3:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1037:13:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4723, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4035, "src": "1037:17:30", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 4725, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1037:25:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1021:41:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4727, "nodeType": "ExpressionStatement", "src": "1021:41:30" }, { "expression": { "argumentTypes": null, "id": 4743, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4728, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4668, "src": "1068:7:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4732, "indexExpression": { "argumentTypes": null, "id": 4729, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4670, "src": "1076:5:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1068:14:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4733, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4730, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "1083:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4731, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1083:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1068:26:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4741, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4674, "src": "1128:6:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4734, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4668, "src": "1097:7:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4736, "indexExpression": { "argumentTypes": null, "id": 4735, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4670, "src": "1105:5:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1097:14:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4739, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4737, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "1112:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4738, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1112:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1097:26:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4740, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 4011, "src": "1097:30:30", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 4742, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1097:38:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1068:67:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4744, "nodeType": "ExpressionStatement", "src": "1068:67:30" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4746, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4670, "src": "1155:5:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4747, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4672, "src": "1162:3:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4748, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4674, "src": "1167:6:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 4745, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4397, "src": "1146:8:30", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 4749, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1146:28:30", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4750, "nodeType": "EmitStatement", "src": "1141:33:30" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 4751, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "1187:4:30", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 4678, "id": 4752, "nodeType": "Return", "src": "1180:11:30" } ] }, "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": 4754, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "transferFrom", "nodeType": "FunctionDefinition", "parameters": { "id": 4675, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4670, "name": "_from", "nodeType": "VariableDeclaration", "scope": 4754, "src": "753:13:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4669, "name": "address", "nodeType": "ElementaryTypeName", "src": "753:7:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4672, "name": "_to", "nodeType": "VariableDeclaration", "scope": 4754, "src": "772:11:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4671, "name": "address", "nodeType": "ElementaryTypeName", "src": "772:7:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4674, "name": "_value", "nodeType": "VariableDeclaration", "scope": 4754, "src": "789:14:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4673, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "789:7:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "747:60:30" }, "payable": false, "returnParameters": { "id": 4678, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4677, "name": "", "nodeType": "VariableDeclaration", "scope": 4754, "src": "832:4:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 4676, "name": "bool", "nodeType": "ElementaryTypeName", "src": "832:4:30", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "831:6:30" }, "scope": 4901, "src": "726:470:30", "stateMutability": "nonpayable", "superFunction": 4348, "visibility": "public" }, { "body": { "id": 4781, "nodeType": "Block", "src": "1887:115:30", "statements": [ { "expression": { "argumentTypes": null, "id": 4770, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4763, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4668, "src": "1893:7:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4767, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4764, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "1901:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4765, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1901:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1893:19:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4768, "indexExpression": { "argumentTypes": null, "id": 4766, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4756, "src": "1913:8:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1893:29:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 4769, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4758, "src": "1925:6:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1893:38:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4771, "nodeType": "ExpressionStatement", "src": "1893:38:30" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4773, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "1951:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4774, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1951:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4775, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4756, "src": "1963:8:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4776, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4758, "src": "1973:6:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 4772, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4365, "src": "1942:8:30", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 4777, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1942:38:30", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4778, "nodeType": "EmitStatement", "src": "1937:43:30" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 4779, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "1993:4:30", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 4762, "id": 4780, "nodeType": "Return", "src": "1986:11:30" } ] }, "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": 4782, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "approve", "nodeType": "FunctionDefinition", "parameters": { "id": 4759, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4756, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 4782, "src": "1831:16:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4755, "name": "address", "nodeType": "ElementaryTypeName", "src": "1831:7:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4758, "name": "_value", "nodeType": "VariableDeclaration", "scope": 4782, "src": "1849:14:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4757, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1849:7:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "1830:34:30" }, "payable": false, "returnParameters": { "id": 4762, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4761, "name": "", "nodeType": "VariableDeclaration", "scope": 4782, "src": "1881:4:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 4760, "name": "bool", "nodeType": "ElementaryTypeName", "src": "1881:4:30", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "1880:6:30" }, "scope": 4901, "src": "1814:188:30", "stateMutability": "nonpayable", "superFunction": 4357, "visibility": "public" }, { "body": { "id": 4797, "nodeType": "Block", "src": "2431:43:30", "statements": [ { "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4791, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4668, "src": "2444:7:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4793, "indexExpression": { "argumentTypes": null, "id": 4792, "name": "_owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4784, "src": "2452:6:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "2444:15:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4795, "indexExpression": { "argumentTypes": null, "id": 4794, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4786, "src": "2460:8:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "2444:25:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 4790, "id": 4796, "nodeType": "Return", "src": "2437:32:30" } ] }, "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": 4798, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "allowance", "nodeType": "FunctionDefinition", "parameters": { "id": 4787, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4784, "name": "_owner", "nodeType": "VariableDeclaration", "scope": 4798, "src": "2345:14:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4783, "name": "address", "nodeType": "ElementaryTypeName", "src": "2345:7:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4786, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 4798, "src": "2365:16:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4785, "name": "address", "nodeType": "ElementaryTypeName", "src": "2365:7:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "2339:47:30" }, "payable": false, "returnParameters": { "id": 4790, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4789, "name": "", "nodeType": "VariableDeclaration", "scope": 4798, "src": "2420:7:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4788, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2420:7:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2419:9:30" }, "scope": 4901, "src": "2321:153:30", "stateMutability": "view", "superFunction": 4337, "visibility": "public" }, { "body": { "id": 4839, "nodeType": "Block", "src": "3035:187:30", "statements": [ { "expression": { "argumentTypes": null, "id": 4823, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4807, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4668, "src": "3041:7:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4811, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4808, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "3049:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4809, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3049:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3041:19:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4812, "indexExpression": { "argumentTypes": null, "id": 4810, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4800, "src": "3061:8:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3041:29:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "components": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4820, "name": "_addedValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4802, "src": "3115:11:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4813, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4668, "src": "3081:7:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4816, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4814, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "3089:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4815, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3089:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3081:19:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4818, "indexExpression": { "argumentTypes": null, "id": 4817, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4800, "src": "3101:8:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3081:29:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4819, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4035, "src": "3081:33:30", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 4821, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3081:46:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 4822, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "3073:55:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3041:87:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4824, "nodeType": "ExpressionStatement", "src": "3041:87:30" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4826, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "3148:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4827, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3148:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4828, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4800, "src": "3160:8:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4829, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4668, "src": "3170:7:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4832, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4830, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "3178:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4831, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3178:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3170:19:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4834, "indexExpression": { "argumentTypes": null, "id": 4833, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4800, "src": "3190:8:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3170:29:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 4825, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4365, "src": "3139:8:30", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 4835, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3139:61:30", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4836, "nodeType": "EmitStatement", "src": "3134:66:30" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 4837, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "3213:4:30", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 4806, "id": 4838, "nodeType": "Return", "src": "3206:11:30" } ] }, "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": 4840, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "increaseApproval", "nodeType": "FunctionDefinition", "parameters": { "id": 4803, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4800, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 4840, "src": "2957:16:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4799, "name": "address", "nodeType": "ElementaryTypeName", "src": "2957:7:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4802, "name": "_addedValue", "nodeType": "VariableDeclaration", "scope": 4840, "src": "2979:19:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4801, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2979:7:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2951:51:30" }, "payable": false, "returnParameters": { "id": 4806, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4805, "name": "", "nodeType": "VariableDeclaration", "scope": 4840, "src": "3027:4:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 4804, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3027:4:30", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "3026:6:30" }, "scope": 4901, "src": "2926:296:30", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" }, { "body": { "id": 4899, "nodeType": "Block", "src": "3793:318:30", "statements": [ { "assignments": [ 4850 ], "declarations": [ { "constant": false, "id": 4850, "name": "oldValue", "nodeType": "VariableDeclaration", "scope": 4900, "src": "3799:16:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4849, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3799:7:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 4857, "initialValue": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4851, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4668, "src": "3818:7:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4854, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4852, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "3826:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4853, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3826:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3818:19:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4856, "indexExpression": { "argumentTypes": null, "id": 4855, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4842, "src": "3838:8:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3818:29:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "3799:48:30" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 4860, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 4858, "name": "_subtractedValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4844, "src": "3857:16:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "argumentTypes": null, "id": 4859, "name": "oldValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4850, "src": "3877:8:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3857:28:30", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 4883, "nodeType": "Block", "src": "3941:77:30", "statements": [ { "expression": { "argumentTypes": null, "id": 4881, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4871, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4668, "src": "3949:7:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4875, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4872, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "3957:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4873, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3957:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3949:19:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4876, "indexExpression": { "argumentTypes": null, "id": 4874, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4842, "src": "3969:8:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3949:29:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4879, "name": "_subtractedValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4844, "src": "3994:16:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 4877, "name": "oldValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4850, "src": "3981:8:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4878, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 4011, "src": "3981:12:30", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 4880, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3981:30:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3949:62:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4882, "nodeType": "ExpressionStatement", "src": "3949:62:30" } ] }, "id": 4884, "nodeType": "IfStatement", "src": "3853:165:30", "trueBody": { "id": 4870, "nodeType": "Block", "src": "3887:48:30", "statements": [ { "expression": { "argumentTypes": null, "id": 4868, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4861, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4668, "src": "3895:7:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4865, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4862, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "3903:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4863, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3903:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3895:19:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4866, "indexExpression": { "argumentTypes": null, "id": 4864, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4842, "src": "3915:8:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3895:29:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "hexValue": "30", "id": 4867, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3927:1:30", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "3895:33:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4869, "nodeType": "ExpressionStatement", "src": "3895:33:30" } ] } }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4886, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "4037:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4887, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4037:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4888, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4842, "src": "4049:8:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4889, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4668, "src": "4059:7:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4892, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4890, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4916, "src": "4067:3:30", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4891, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4067:10:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "4059:19:30", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4894, "indexExpression": { "argumentTypes": null, "id": 4893, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4842, "src": "4079:8:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "4059:29:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 4885, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4365, "src": "4028:8:30", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 4895, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4028:61:30", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4896, "nodeType": "EmitStatement", "src": "4023:66:30" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 4897, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "4102:4:30", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 4848, "id": 4898, "nodeType": "Return", "src": "4095:11:30" } ] }, "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": 4900, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "decreaseApproval", "nodeType": "FunctionDefinition", "parameters": { "id": 4845, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4842, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 4900, "src": "3710:16:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4841, "name": "address", "nodeType": "ElementaryTypeName", "src": "3710:7:30", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4844, "name": "_subtractedValue", "nodeType": "VariableDeclaration", "scope": 4900, "src": "3732:24:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4843, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3732:7:30", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "3704:56:30" }, "payable": false, "returnParameters": { "id": 4848, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4847, "name": "", "nodeType": "VariableDeclaration", "scope": 4900, "src": "3785:4:30", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 4846, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3785:4:30", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "3784:6:30" }, "scope": 4901, "src": "3679:432:30", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" } ], "scope": 4902, "src": "334:3780:30" } ], "src": "0:4115:30" }, "compiler": { "name": "solc", "version": "0.4.24+commit.e67f0147.Emscripten.clang" }, "networks": {}, "schemaVersion": "2.0.1", "updatedAt": "2018-10-16T05:56:33.190Z" }