{ "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 ^0.4.23;\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 * @dev https://github.com/ethereum/EIPs/issues/20\n * @dev 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(_to != address(0));\n require(_value <= balances[_from]);\n require(_value <= allowed[_from][msg.sender]);\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 *\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 *\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 uint _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 *\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 uint _subtractedValue\n )\n public\n returns (bool)\n {\n uint 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": "openzeppelin-solidity/contracts/token/ERC20/StandardToken.sol", "ast": { "absolutePath": "openzeppelin-solidity/contracts/token/ERC20/StandardToken.sol", "exportedSymbols": { "StandardToken": [ 4962 ] }, "id": 4963, "nodeType": "SourceUnit", "nodes": [ { "id": 4717, "literals": [ "solidity", "^", "0.4", ".23" ], "nodeType": "PragmaDirective", "src": "0:24:36" }, { "absolutePath": "openzeppelin-solidity/contracts/token/ERC20/BasicToken.sol", "file": "./BasicToken.sol", "id": 4718, "nodeType": "ImportDirective", "scope": 4963, "sourceUnit": 4464, "src": "26:26:36", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "openzeppelin-solidity/contracts/token/ERC20/ERC20.sol", "file": "./ERC20.sol", "id": 4719, "nodeType": "ImportDirective", "scope": 4963, "sourceUnit": 4578, "src": "53:21:36", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 4720, "name": "ERC20", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 4577, "src": "370:5:36", "typeDescriptions": { "typeIdentifier": "t_contract$_ERC20_$4577", "typeString": "contract ERC20" } }, "id": 4721, "nodeType": "InheritanceSpecifier", "src": "370:5:36" }, { "arguments": null, "baseName": { "contractScope": null, "id": 4722, "name": "BasicToken", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 4463, "src": "377:10:36", "typeDescriptions": { "typeIdentifier": "t_contract$_BasicToken_$4463", "typeString": "contract BasicToken" } }, "id": 4723, "nodeType": "InheritanceSpecifier", "src": "377:10:36" } ], "contractDependencies": [ 4463, 4577, 4609 ], "contractKind": "contract", "documentation": "@title Standard ERC20 token\n * @dev Implementation of the basic standard token.\n@dev https://github.com/ethereum/EIPs/issues/20\n@dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol", "fullyImplemented": true, "id": 4962, "linearizedBaseContracts": [ 4962, 4463, 4577, 4609 ], "name": "StandardToken", "nodeType": "ContractDefinition", "nodes": [ { "constant": false, "id": 4729, "name": "allowed", "nodeType": "VariableDeclaration", "scope": 4962, "src": "393:66:36", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" }, "typeName": { "id": 4728, "keyType": { "id": 4724, "name": "address", "nodeType": "ElementaryTypeName", "src": "402:7:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "393:49:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" }, "valueType": { "id": 4727, "keyType": { "id": 4725, "name": "address", "nodeType": "ElementaryTypeName", "src": "422:7:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "413:28:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "valueType": { "id": 4726, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "433:7:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } } }, "value": null, "visibility": "internal" }, { "body": { "id": 4814, "nodeType": "Block", "src": "850:356:36", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 4745, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 4741, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4733, "src": "864:3:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 4743, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "879:1:36", "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": 4742, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "871:7:36", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 4744, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "871:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "864:17:36", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 4740, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6112, 6113 ], "referencedDeclaration": 6112, "src": "856:7:36", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 4746, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "856:26:36", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4747, "nodeType": "ExpressionStatement", "src": "856:26:36" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 4753, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 4749, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4735, "src": "896:6:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<=", "rightExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4750, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4380, "src": "906:8:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4752, "indexExpression": { "argumentTypes": null, "id": 4751, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4731, "src": "915:5:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "906:15:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "896:25:36", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 4748, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6112, 6113 ], "referencedDeclaration": 6112, "src": "888:7:36", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 4754, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "888:34:36", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4755, "nodeType": "ExpressionStatement", "src": "888:34:36" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 4764, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 4757, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4735, "src": "936:6:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<=", "rightExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4758, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4729, "src": "946:7:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4760, "indexExpression": { "argumentTypes": null, "id": 4759, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4731, "src": "954:5:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "946:14:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4763, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4761, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "961:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4762, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "961:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "946:26:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "936:36:36", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 4756, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6112, 6113 ], "referencedDeclaration": 6112, "src": "928:7:36", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 4765, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "928:45:36", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4766, "nodeType": "ExpressionStatement", "src": "928:45:36" }, { "expression": { "argumentTypes": null, "id": 4776, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4767, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4380, "src": "980:8:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4769, "indexExpression": { "argumentTypes": null, "id": 4768, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4731, "src": "989:5:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "980:15:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4774, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4735, "src": "1018:6:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4770, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4380, "src": "998:8:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4772, "indexExpression": { "argumentTypes": null, "id": 4771, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4731, "src": "1007:5:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "998:15:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4773, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 4256, "src": "998:19:36", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 4775, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "998:27:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "980:45:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4777, "nodeType": "ExpressionStatement", "src": "980:45:36" }, { "expression": { "argumentTypes": null, "id": 4787, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4778, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4380, "src": "1031:8:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4780, "indexExpression": { "argumentTypes": null, "id": 4779, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4733, "src": "1040:3:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1031:13:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4785, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4735, "src": "1065:6:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4781, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4380, "src": "1047:8:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4783, "indexExpression": { "argumentTypes": null, "id": 4782, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4733, "src": "1056:3:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1047:13:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4784, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4280, "src": "1047:17:36", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 4786, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1047:25:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1031:41:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4788, "nodeType": "ExpressionStatement", "src": "1031:41:36" }, { "expression": { "argumentTypes": null, "id": 4804, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4789, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4729, "src": "1078:7:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4793, "indexExpression": { "argumentTypes": null, "id": 4790, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4731, "src": "1086:5:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1078:14:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4794, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4791, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "1093:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4792, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1093:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1078:26:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4802, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4735, "src": "1138:6:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4795, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4729, "src": "1107:7:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4797, "indexExpression": { "argumentTypes": null, "id": 4796, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4731, "src": "1115:5:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1107:14:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4800, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4798, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "1122:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4799, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1122:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1107:26:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4801, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 4256, "src": "1107:30:36", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 4803, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1107:38:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1078:67:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4805, "nodeType": "ExpressionStatement", "src": "1078:67:36" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4807, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4731, "src": "1165:5:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4808, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4733, "src": "1172:3:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4809, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4735, "src": "1177:6:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 4806, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4608, "src": "1156:8:36", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 4810, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1156:28:36", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4811, "nodeType": "EmitStatement", "src": "1151:33:36" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 4812, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "1197:4:36", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 4739, "id": 4813, "nodeType": "Return", "src": "1190:11:36" } ] }, "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": 4815, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "transferFrom", "nodeType": "FunctionDefinition", "parameters": { "id": 4736, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4731, "name": "_from", "nodeType": "VariableDeclaration", "scope": 4815, "src": "763:13:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4730, "name": "address", "nodeType": "ElementaryTypeName", "src": "763:7:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4733, "name": "_to", "nodeType": "VariableDeclaration", "scope": 4815, "src": "782:11:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4732, "name": "address", "nodeType": "ElementaryTypeName", "src": "782:7:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4735, "name": "_value", "nodeType": "VariableDeclaration", "scope": 4815, "src": "799:14:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4734, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "799:7:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "757:60:36" }, "payable": false, "returnParameters": { "id": 4739, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4738, "name": "", "nodeType": "VariableDeclaration", "scope": 4815, "src": "842:4:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 4737, "name": "bool", "nodeType": "ElementaryTypeName", "src": "842:4:36", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "841:6:36" }, "scope": 4962, "src": "736:470:36", "stateMutability": "nonpayable", "superFunction": 4559, "visibility": "public" }, { "body": { "id": 4842, "nodeType": "Block", "src": "1902:115:36", "statements": [ { "expression": { "argumentTypes": null, "id": 4831, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4824, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4729, "src": "1908:7:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4828, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4825, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "1916:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4826, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1916:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1908:19:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4829, "indexExpression": { "argumentTypes": null, "id": 4827, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4817, "src": "1928:8:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1908:29:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 4830, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4819, "src": "1940:6:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1908:38:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4832, "nodeType": "ExpressionStatement", "src": "1908:38:36" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4834, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "1966:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4835, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1966:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4836, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4817, "src": "1978:8:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4837, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4819, "src": "1988:6:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 4833, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4576, "src": "1957:8:36", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 4838, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1957:38:36", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4839, "nodeType": "EmitStatement", "src": "1952:43:36" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 4840, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "2008:4:36", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 4823, "id": 4841, "nodeType": "Return", "src": "2001:11:36" } ] }, "documentation": "@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\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": 4843, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "approve", "nodeType": "FunctionDefinition", "parameters": { "id": 4820, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4817, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 4843, "src": "1846:16:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4816, "name": "address", "nodeType": "ElementaryTypeName", "src": "1846:7:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4819, "name": "_value", "nodeType": "VariableDeclaration", "scope": 4843, "src": "1864:14:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4818, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1864:7:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "1845:34:36" }, "payable": false, "returnParameters": { "id": 4823, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4822, "name": "", "nodeType": "VariableDeclaration", "scope": 4843, "src": "1896:4:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 4821, "name": "bool", "nodeType": "ElementaryTypeName", "src": "1896:4:36", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "1895:6:36" }, "scope": 4962, "src": "1829:188:36", "stateMutability": "nonpayable", "superFunction": 4568, "visibility": "public" }, { "body": { "id": 4858, "nodeType": "Block", "src": "2446:43:36", "statements": [ { "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4852, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4729, "src": "2459:7:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4854, "indexExpression": { "argumentTypes": null, "id": 4853, "name": "_owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4845, "src": "2467:6:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "2459:15:36", "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": 4847, "src": "2475:8:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "2459:25:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 4851, "id": 4857, "nodeType": "Return", "src": "2452:32:36" } ] }, "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": 4859, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "allowance", "nodeType": "FunctionDefinition", "parameters": { "id": 4848, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4845, "name": "_owner", "nodeType": "VariableDeclaration", "scope": 4859, "src": "2360:14:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4844, "name": "address", "nodeType": "ElementaryTypeName", "src": "2360:7:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4847, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 4859, "src": "2380:16:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4846, "name": "address", "nodeType": "ElementaryTypeName", "src": "2380:7:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "2354:47:36" }, "payable": false, "returnParameters": { "id": 4851, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4850, "name": "", "nodeType": "VariableDeclaration", "scope": 4859, "src": "2435:7:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4849, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2435:7:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2434:9:36" }, "scope": 4962, "src": "2336:153:36", "stateMutability": "view", "superFunction": 4548, "visibility": "public" }, { "body": { "id": 4900, "nodeType": "Block", "src": "3052:187:36", "statements": [ { "expression": { "argumentTypes": null, "id": 4884, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4868, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4729, "src": "3058:7:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4872, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4869, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "3066:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4870, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3066:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3058:19:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4873, "indexExpression": { "argumentTypes": null, "id": 4871, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4861, "src": "3078:8:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3058:29:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "components": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4881, "name": "_addedValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4863, "src": "3132:11:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4874, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4729, "src": "3098:7:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4877, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4875, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "3106:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4876, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3106:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3098:19:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4879, "indexExpression": { "argumentTypes": null, "id": 4878, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4861, "src": "3118:8:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3098:29:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4880, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4280, "src": "3098:33:36", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 4882, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3098:46:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 4883, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "3090:55:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3058:87:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4885, "nodeType": "ExpressionStatement", "src": "3058:87:36" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4887, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "3165:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4888, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3165:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4889, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4861, "src": "3177:8:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4890, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4729, "src": "3187:7:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4893, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4891, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "3195:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4892, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3195:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3187:19:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4895, "indexExpression": { "argumentTypes": null, "id": 4894, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4861, "src": "3207:8:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3187:29:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 4886, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4576, "src": "3156:8:36", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 4896, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3156:61:36", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4897, "nodeType": "EmitStatement", "src": "3151:66:36" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 4898, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "3230:4:36", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 4867, "id": 4899, "nodeType": "Return", "src": "3223:11:36" } ] }, "documentation": "@dev Increase the amount of tokens that an owner allowed to a spender.\n * approve 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": 4901, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "increaseApproval", "nodeType": "FunctionDefinition", "parameters": { "id": 4864, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4861, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 4901, "src": "2977:16:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4860, "name": "address", "nodeType": "ElementaryTypeName", "src": "2977:7:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4863, "name": "_addedValue", "nodeType": "VariableDeclaration", "scope": 4901, "src": "2999:16:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4862, "name": "uint", "nodeType": "ElementaryTypeName", "src": "2999:4:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2971:48:36" }, "payable": false, "returnParameters": { "id": 4867, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4866, "name": "", "nodeType": "VariableDeclaration", "scope": 4901, "src": "3044:4:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 4865, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3044:4:36", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "3043:6:36" }, "scope": 4962, "src": "2946:293:36", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" }, { "body": { "id": 4960, "nodeType": "Block", "src": "3812:314:36", "statements": [ { "assignments": [ 4911 ], "declarations": [ { "constant": false, "id": 4911, "name": "oldValue", "nodeType": "VariableDeclaration", "scope": 4961, "src": "3818:13:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4910, "name": "uint", "nodeType": "ElementaryTypeName", "src": "3818:4:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 4918, "initialValue": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4912, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4729, "src": "3834:7:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4915, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4913, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "3842:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4914, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3842:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3834:19:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4917, "indexExpression": { "argumentTypes": null, "id": 4916, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4903, "src": "3854:8:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3834:29:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "3818:45:36" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 4921, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 4919, "name": "_subtractedValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4905, "src": "3873:16:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "argumentTypes": null, "id": 4920, "name": "oldValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4911, "src": "3892:8:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3873:27:36", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 4944, "nodeType": "Block", "src": "3956:77:36", "statements": [ { "expression": { "argumentTypes": null, "id": 4942, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4932, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4729, "src": "3964:7:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4936, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4933, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "3972:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4934, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3972:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3964:19:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4937, "indexExpression": { "argumentTypes": null, "id": 4935, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4903, "src": "3984:8:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3964:29:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4940, "name": "_subtractedValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4905, "src": "4009:16:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 4938, "name": "oldValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4911, "src": "3996:8:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4939, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 4256, "src": "3996:12:36", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 4941, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3996:30:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3964:62:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4943, "nodeType": "ExpressionStatement", "src": "3964:62:36" } ] }, "id": 4945, "nodeType": "IfStatement", "src": "3869:164:36", "trueBody": { "id": 4931, "nodeType": "Block", "src": "3902:48:36", "statements": [ { "expression": { "argumentTypes": null, "id": 4929, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4922, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4729, "src": "3910:7:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4926, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4923, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "3918:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4924, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3918:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3910:19:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4927, "indexExpression": { "argumentTypes": null, "id": 4925, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4903, "src": "3930:8:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3910:29:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "hexValue": "30", "id": 4928, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3942:1:36", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "3910:33:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4930, "nodeType": "ExpressionStatement", "src": "3910:33:36" } ] } }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4947, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "4052:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4948, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4052:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4949, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4903, "src": "4064:8:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4950, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4729, "src": "4074:7:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4953, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4951, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "4082:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4952, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4082:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "4074:19:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4955, "indexExpression": { "argumentTypes": null, "id": 4954, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4903, "src": "4094:8:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "4074:29:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 4946, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4576, "src": "4043:8:36", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 4956, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4043:61:36", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4957, "nodeType": "EmitStatement", "src": "4038:66:36" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 4958, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "4117:4:36", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 4909, "id": 4959, "nodeType": "Return", "src": "4110:11:36" } ] }, "documentation": "@dev Decrease the amount of tokens that an owner allowed to a spender.\n * approve 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": 4961, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "decreaseApproval", "nodeType": "FunctionDefinition", "parameters": { "id": 4906, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4903, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 4961, "src": "3732:16:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4902, "name": "address", "nodeType": "ElementaryTypeName", "src": "3732:7:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4905, "name": "_subtractedValue", "nodeType": "VariableDeclaration", "scope": 4961, "src": "3754:21:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4904, "name": "uint", "nodeType": "ElementaryTypeName", "src": "3754:4:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "3726:53:36" }, "payable": false, "returnParameters": { "id": 4909, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4908, "name": "", "nodeType": "VariableDeclaration", "scope": 4961, "src": "3804:4:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 4907, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3804:4:36", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "3803:6:36" }, "scope": 4962, "src": "3701:425:36", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" } ], "scope": 4963, "src": "344:3785:36" } ], "src": "0:4130:36" }, "legacyAST": { "absolutePath": "openzeppelin-solidity/contracts/token/ERC20/StandardToken.sol", "exportedSymbols": { "StandardToken": [ 4962 ] }, "id": 4963, "nodeType": "SourceUnit", "nodes": [ { "id": 4717, "literals": [ "solidity", "^", "0.4", ".23" ], "nodeType": "PragmaDirective", "src": "0:24:36" }, { "absolutePath": "openzeppelin-solidity/contracts/token/ERC20/BasicToken.sol", "file": "./BasicToken.sol", "id": 4718, "nodeType": "ImportDirective", "scope": 4963, "sourceUnit": 4464, "src": "26:26:36", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "openzeppelin-solidity/contracts/token/ERC20/ERC20.sol", "file": "./ERC20.sol", "id": 4719, "nodeType": "ImportDirective", "scope": 4963, "sourceUnit": 4578, "src": "53:21:36", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 4720, "name": "ERC20", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 4577, "src": "370:5:36", "typeDescriptions": { "typeIdentifier": "t_contract$_ERC20_$4577", "typeString": "contract ERC20" } }, "id": 4721, "nodeType": "InheritanceSpecifier", "src": "370:5:36" }, { "arguments": null, "baseName": { "contractScope": null, "id": 4722, "name": "BasicToken", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 4463, "src": "377:10:36", "typeDescriptions": { "typeIdentifier": "t_contract$_BasicToken_$4463", "typeString": "contract BasicToken" } }, "id": 4723, "nodeType": "InheritanceSpecifier", "src": "377:10:36" } ], "contractDependencies": [ 4463, 4577, 4609 ], "contractKind": "contract", "documentation": "@title Standard ERC20 token\n * @dev Implementation of the basic standard token.\n@dev https://github.com/ethereum/EIPs/issues/20\n@dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol", "fullyImplemented": true, "id": 4962, "linearizedBaseContracts": [ 4962, 4463, 4577, 4609 ], "name": "StandardToken", "nodeType": "ContractDefinition", "nodes": [ { "constant": false, "id": 4729, "name": "allowed", "nodeType": "VariableDeclaration", "scope": 4962, "src": "393:66:36", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" }, "typeName": { "id": 4728, "keyType": { "id": 4724, "name": "address", "nodeType": "ElementaryTypeName", "src": "402:7:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "393:49:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" }, "valueType": { "id": 4727, "keyType": { "id": 4725, "name": "address", "nodeType": "ElementaryTypeName", "src": "422:7:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "413:28:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "valueType": { "id": 4726, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "433:7:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } } }, "value": null, "visibility": "internal" }, { "body": { "id": 4814, "nodeType": "Block", "src": "850:356:36", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 4745, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 4741, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4733, "src": "864:3:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 4743, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "879:1:36", "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": 4742, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "871:7:36", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 4744, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "871:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "864:17:36", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 4740, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6112, 6113 ], "referencedDeclaration": 6112, "src": "856:7:36", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 4746, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "856:26:36", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4747, "nodeType": "ExpressionStatement", "src": "856:26:36" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 4753, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 4749, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4735, "src": "896:6:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<=", "rightExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4750, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4380, "src": "906:8:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4752, "indexExpression": { "argumentTypes": null, "id": 4751, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4731, "src": "915:5:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "906:15:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "896:25:36", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 4748, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6112, 6113 ], "referencedDeclaration": 6112, "src": "888:7:36", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 4754, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "888:34:36", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4755, "nodeType": "ExpressionStatement", "src": "888:34:36" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 4764, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 4757, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4735, "src": "936:6:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<=", "rightExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4758, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4729, "src": "946:7:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4760, "indexExpression": { "argumentTypes": null, "id": 4759, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4731, "src": "954:5:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "946:14:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4763, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4761, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "961:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4762, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "961:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "946:26:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "936:36:36", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 4756, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6112, 6113 ], "referencedDeclaration": 6112, "src": "928:7:36", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 4765, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "928:45:36", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4766, "nodeType": "ExpressionStatement", "src": "928:45:36" }, { "expression": { "argumentTypes": null, "id": 4776, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4767, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4380, "src": "980:8:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4769, "indexExpression": { "argumentTypes": null, "id": 4768, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4731, "src": "989:5:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "980:15:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4774, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4735, "src": "1018:6:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4770, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4380, "src": "998:8:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4772, "indexExpression": { "argumentTypes": null, "id": 4771, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4731, "src": "1007:5:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "998:15:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4773, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 4256, "src": "998:19:36", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 4775, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "998:27:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "980:45:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4777, "nodeType": "ExpressionStatement", "src": "980:45:36" }, { "expression": { "argumentTypes": null, "id": 4787, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4778, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4380, "src": "1031:8:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4780, "indexExpression": { "argumentTypes": null, "id": 4779, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4733, "src": "1040:3:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1031:13:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4785, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4735, "src": "1065:6:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4781, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4380, "src": "1047:8:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4783, "indexExpression": { "argumentTypes": null, "id": 4782, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4733, "src": "1056:3:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1047:13:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4784, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4280, "src": "1047:17:36", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 4786, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1047:25:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1031:41:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4788, "nodeType": "ExpressionStatement", "src": "1031:41:36" }, { "expression": { "argumentTypes": null, "id": 4804, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4789, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4729, "src": "1078:7:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4793, "indexExpression": { "argumentTypes": null, "id": 4790, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4731, "src": "1086:5:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1078:14:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4794, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4791, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "1093:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4792, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1093:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1078:26:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4802, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4735, "src": "1138:6:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4795, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4729, "src": "1107:7:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4797, "indexExpression": { "argumentTypes": null, "id": 4796, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4731, "src": "1115:5:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1107:14:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4800, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4798, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "1122:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4799, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1122:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1107:26:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4801, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 4256, "src": "1107:30:36", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 4803, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1107:38:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1078:67:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4805, "nodeType": "ExpressionStatement", "src": "1078:67:36" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4807, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4731, "src": "1165:5:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4808, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4733, "src": "1172:3:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4809, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4735, "src": "1177:6:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 4806, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4608, "src": "1156:8:36", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 4810, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1156:28:36", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4811, "nodeType": "EmitStatement", "src": "1151:33:36" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 4812, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "1197:4:36", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 4739, "id": 4813, "nodeType": "Return", "src": "1190:11:36" } ] }, "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": 4815, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "transferFrom", "nodeType": "FunctionDefinition", "parameters": { "id": 4736, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4731, "name": "_from", "nodeType": "VariableDeclaration", "scope": 4815, "src": "763:13:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4730, "name": "address", "nodeType": "ElementaryTypeName", "src": "763:7:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4733, "name": "_to", "nodeType": "VariableDeclaration", "scope": 4815, "src": "782:11:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4732, "name": "address", "nodeType": "ElementaryTypeName", "src": "782:7:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4735, "name": "_value", "nodeType": "VariableDeclaration", "scope": 4815, "src": "799:14:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4734, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "799:7:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "757:60:36" }, "payable": false, "returnParameters": { "id": 4739, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4738, "name": "", "nodeType": "VariableDeclaration", "scope": 4815, "src": "842:4:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 4737, "name": "bool", "nodeType": "ElementaryTypeName", "src": "842:4:36", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "841:6:36" }, "scope": 4962, "src": "736:470:36", "stateMutability": "nonpayable", "superFunction": 4559, "visibility": "public" }, { "body": { "id": 4842, "nodeType": "Block", "src": "1902:115:36", "statements": [ { "expression": { "argumentTypes": null, "id": 4831, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4824, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4729, "src": "1908:7:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4828, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4825, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "1916:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4826, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1916:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1908:19:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4829, "indexExpression": { "argumentTypes": null, "id": 4827, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4817, "src": "1928:8:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1908:29:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 4830, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4819, "src": "1940:6:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1908:38:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4832, "nodeType": "ExpressionStatement", "src": "1908:38:36" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4834, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "1966:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4835, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1966:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4836, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4817, "src": "1978:8:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4837, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4819, "src": "1988:6:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 4833, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4576, "src": "1957:8:36", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 4838, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1957:38:36", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4839, "nodeType": "EmitStatement", "src": "1952:43:36" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 4840, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "2008:4:36", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 4823, "id": 4841, "nodeType": "Return", "src": "2001:11:36" } ] }, "documentation": "@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\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": 4843, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "approve", "nodeType": "FunctionDefinition", "parameters": { "id": 4820, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4817, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 4843, "src": "1846:16:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4816, "name": "address", "nodeType": "ElementaryTypeName", "src": "1846:7:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4819, "name": "_value", "nodeType": "VariableDeclaration", "scope": 4843, "src": "1864:14:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4818, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1864:7:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "1845:34:36" }, "payable": false, "returnParameters": { "id": 4823, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4822, "name": "", "nodeType": "VariableDeclaration", "scope": 4843, "src": "1896:4:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 4821, "name": "bool", "nodeType": "ElementaryTypeName", "src": "1896:4:36", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "1895:6:36" }, "scope": 4962, "src": "1829:188:36", "stateMutability": "nonpayable", "superFunction": 4568, "visibility": "public" }, { "body": { "id": 4858, "nodeType": "Block", "src": "2446:43:36", "statements": [ { "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4852, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4729, "src": "2459:7:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4854, "indexExpression": { "argumentTypes": null, "id": 4853, "name": "_owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4845, "src": "2467:6:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "2459:15:36", "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": 4847, "src": "2475:8:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "2459:25:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 4851, "id": 4857, "nodeType": "Return", "src": "2452:32:36" } ] }, "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": 4859, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "allowance", "nodeType": "FunctionDefinition", "parameters": { "id": 4848, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4845, "name": "_owner", "nodeType": "VariableDeclaration", "scope": 4859, "src": "2360:14:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4844, "name": "address", "nodeType": "ElementaryTypeName", "src": "2360:7:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4847, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 4859, "src": "2380:16:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4846, "name": "address", "nodeType": "ElementaryTypeName", "src": "2380:7:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "2354:47:36" }, "payable": false, "returnParameters": { "id": 4851, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4850, "name": "", "nodeType": "VariableDeclaration", "scope": 4859, "src": "2435:7:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4849, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2435:7:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2434:9:36" }, "scope": 4962, "src": "2336:153:36", "stateMutability": "view", "superFunction": 4548, "visibility": "public" }, { "body": { "id": 4900, "nodeType": "Block", "src": "3052:187:36", "statements": [ { "expression": { "argumentTypes": null, "id": 4884, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4868, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4729, "src": "3058:7:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4872, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4869, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "3066:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4870, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3066:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3058:19:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4873, "indexExpression": { "argumentTypes": null, "id": 4871, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4861, "src": "3078:8:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3058:29:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "components": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4881, "name": "_addedValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4863, "src": "3132:11:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4874, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4729, "src": "3098:7:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4877, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4875, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "3106:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4876, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3106:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3098:19:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4879, "indexExpression": { "argumentTypes": null, "id": 4878, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4861, "src": "3118:8:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3098:29:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4880, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4280, "src": "3098:33:36", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 4882, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3098:46:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 4883, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "3090:55:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3058:87:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4885, "nodeType": "ExpressionStatement", "src": "3058:87:36" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4887, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "3165:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4888, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3165:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4889, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4861, "src": "3177:8:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4890, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4729, "src": "3187:7:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4893, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4891, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "3195:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4892, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3195:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3187:19:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4895, "indexExpression": { "argumentTypes": null, "id": 4894, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4861, "src": "3207:8:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3187:29:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 4886, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4576, "src": "3156:8:36", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 4896, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3156:61:36", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4897, "nodeType": "EmitStatement", "src": "3151:66:36" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 4898, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "3230:4:36", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 4867, "id": 4899, "nodeType": "Return", "src": "3223:11:36" } ] }, "documentation": "@dev Increase the amount of tokens that an owner allowed to a spender.\n * approve 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": 4901, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "increaseApproval", "nodeType": "FunctionDefinition", "parameters": { "id": 4864, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4861, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 4901, "src": "2977:16:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4860, "name": "address", "nodeType": "ElementaryTypeName", "src": "2977:7:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4863, "name": "_addedValue", "nodeType": "VariableDeclaration", "scope": 4901, "src": "2999:16:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4862, "name": "uint", "nodeType": "ElementaryTypeName", "src": "2999:4:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2971:48:36" }, "payable": false, "returnParameters": { "id": 4867, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4866, "name": "", "nodeType": "VariableDeclaration", "scope": 4901, "src": "3044:4:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 4865, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3044:4:36", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "3043:6:36" }, "scope": 4962, "src": "2946:293:36", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" }, { "body": { "id": 4960, "nodeType": "Block", "src": "3812:314:36", "statements": [ { "assignments": [ 4911 ], "declarations": [ { "constant": false, "id": 4911, "name": "oldValue", "nodeType": "VariableDeclaration", "scope": 4961, "src": "3818:13:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4910, "name": "uint", "nodeType": "ElementaryTypeName", "src": "3818:4:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 4918, "initialValue": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4912, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4729, "src": "3834:7:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4915, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4913, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "3842:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4914, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3842:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3834:19:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4917, "indexExpression": { "argumentTypes": null, "id": 4916, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4903, "src": "3854:8:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3834:29:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "3818:45:36" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 4921, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 4919, "name": "_subtractedValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4905, "src": "3873:16:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "argumentTypes": null, "id": 4920, "name": "oldValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4911, "src": "3892:8:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3873:27:36", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 4944, "nodeType": "Block", "src": "3956:77:36", "statements": [ { "expression": { "argumentTypes": null, "id": 4942, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4932, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4729, "src": "3964:7:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4936, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4933, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "3972:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4934, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3972:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3964:19:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4937, "indexExpression": { "argumentTypes": null, "id": 4935, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4903, "src": "3984:8:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3964:29:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4940, "name": "_subtractedValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4905, "src": "4009:16:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 4938, "name": "oldValue", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4911, "src": "3996:8:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4939, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 4256, "src": "3996:12:36", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 4941, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3996:30:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3964:62:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4943, "nodeType": "ExpressionStatement", "src": "3964:62:36" } ] }, "id": 4945, "nodeType": "IfStatement", "src": "3869:164:36", "trueBody": { "id": 4931, "nodeType": "Block", "src": "3902:48:36", "statements": [ { "expression": { "argumentTypes": null, "id": 4929, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4922, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4729, "src": "3910:7:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4926, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4923, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "3918:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4924, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3918:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3910:19:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4927, "indexExpression": { "argumentTypes": null, "id": 4925, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4903, "src": "3930:8:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3910:29:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "hexValue": "30", "id": 4928, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3942:1:36", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "3910:33:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4930, "nodeType": "ExpressionStatement", "src": "3910:33:36" } ] } }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4947, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "4052:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4948, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4052:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4949, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4903, "src": "4064:8:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 4950, "name": "allowed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4729, "src": "4074:7:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" } }, "id": 4953, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4951, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6109, "src": "4082:3:36", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4952, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4082:10:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "4074:19:36", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 4955, "indexExpression": { "argumentTypes": null, "id": 4954, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4903, "src": "4094:8:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "4074:29:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 4946, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4576, "src": "4043:8:36", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 4956, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4043:61:36", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4957, "nodeType": "EmitStatement", "src": "4038:66:36" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 4958, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "4117:4:36", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 4909, "id": 4959, "nodeType": "Return", "src": "4110:11:36" } ] }, "documentation": "@dev Decrease the amount of tokens that an owner allowed to a spender.\n * approve 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": 4961, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "decreaseApproval", "nodeType": "FunctionDefinition", "parameters": { "id": 4906, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4903, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 4961, "src": "3732:16:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4902, "name": "address", "nodeType": "ElementaryTypeName", "src": "3732:7:36", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4905, "name": "_subtractedValue", "nodeType": "VariableDeclaration", "scope": 4961, "src": "3754:21:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4904, "name": "uint", "nodeType": "ElementaryTypeName", "src": "3754:4:36", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "3726:53:36" }, "payable": false, "returnParameters": { "id": 4909, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4908, "name": "", "nodeType": "VariableDeclaration", "scope": 4961, "src": "3804:4:36", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 4907, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3804:4:36", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "3803:6:36" }, "scope": 4962, "src": "3701:425:36", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" } ], "scope": 4963, "src": "344:3785:36" } ], "src": "0:4130:36" }, "compiler": { "name": "solc", "version": "0.4.25+commit.59dbf8f1.Emscripten.clang" }, "networks": {}, "schemaVersion": "3.0.0-beta.1", "updatedAt": "2018-11-01T18:10:50.812Z" }