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"source": "pragma solidity ^0.4.23;\n\n\nimport \"./ERC20Basic.sol\";\nimport \"../../math/SafeMath.sol\";\n\n\n/**\n * @title Basic token\n * @dev Basic version of StandardToken, with no allowances.\n */\ncontract BasicToken is ERC20Basic {\n using SafeMath for uint256;\n\n mapping(address => uint256) balances;\n\n uint256 totalSupply_;\n\n /**\n * @dev total number of tokens in existence\n */\n function totalSupply() public view returns (uint256) {\n return totalSupply_;\n }\n\n /**\n * @dev transfer token for a specified address\n * @param _to The address to transfer to.\n * @param _value The amount to be transferred.\n */\n function transfer(address _to, uint256 _value) public returns (bool) {\n require(_to != address(0));\n require(_value <= balances[msg.sender]);\n\n balances[msg.sender] = balances[msg.sender].sub(_value);\n balances[_to] = balances[_to].add(_value);\n emit Transfer(msg.sender, _to, _value);\n return true;\n }\n\n /**\n * @dev Gets the balance of the specified address.\n * @param _owner The address to query the the balance of.\n * @return An uint256 representing the amount owned by the passed address.\n */\n function balanceOf(address _owner) public view returns (uint256) {\n return balances[_owner];\n }\n\n}\n", "sourcePath": "openzeppelin-solidity/contracts/token/ERC20/BasicToken.sol", "ast": { "absolutePath": "openzeppelin-solidity/contracts/token/ERC20/BasicToken.sol", "exportedSymbols": { "BasicToken": [ 2280 ] }, "id": 2281, "nodeType": "SourceUnit", "nodes": [ { "id": 2186, "literals": [ "solidity", "^", "0.4", ".23" ], "nodeType": "PragmaDirective", "src": "0:24:16" }, { "absolutePath": "openzeppelin-solidity/contracts/token/ERC20/ERC20Basic.sol", "file": "./ERC20Basic.sol", "id": 2187, "nodeType": "ImportDirective", "scope": 2281, "sourceUnit": 2390, "src": "27:26:16", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "openzeppelin-solidity/contracts/math/SafeMath.sol", "file": "../../math/SafeMath.sol", "id": 2188, "nodeType": "ImportDirective", "scope": 2281, "sourceUnit": 2099, "src": "54:33:16", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 2189, "name": "ERC20Basic", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 2389, "src": "203:10:16", "typeDescriptions": { "typeIdentifier": "t_contract$_ERC20Basic_$2389", "typeString": "contract ERC20Basic" } }, "id": 2190, "nodeType": "InheritanceSpecifier", "src": "203:10:16" } ], "contractDependencies": [ 2389 ], "contractKind": "contract", "documentation": "@title Basic token\n@dev Basic version of StandardToken, with no allowances.", "fullyImplemented": true, "id": 2280, "linearizedBaseContracts": [ 2280, 2389 ], "name": "BasicToken", "nodeType": "ContractDefinition", "nodes": [ { "id": 2193, "libraryName": { "contractScope": null, "id": 2191, "name": "SafeMath", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 2098, "src": "224:8:16", "typeDescriptions": { "typeIdentifier": "t_contract$_SafeMath_$2098", "typeString": "library SafeMath" } }, "nodeType": "UsingForDirective", "src": "218:27:16", "typeName": { "id": 2192, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "237:7:16", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, { "constant": false, "id": 2197, "name": "balances", "nodeType": "VariableDeclaration", "scope": 2280, "src": "249:36:16", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "typeName": { "id": 2196, "keyType": { "id": 2194, "name": "address", "nodeType": "ElementaryTypeName", "src": "257:7:16", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "249:27:16", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "valueType": { "id": 2195, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "268:7:16", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 2199, "name": "totalSupply_", "nodeType": "VariableDeclaration", "scope": 2280, "src": "290:20:16", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2198, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "290:7:16", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "body": { "id": 2206, "nodeType": "Block", "src": "424:30:16", "statements": [ { "expression": { "argumentTypes": null, "id": 2204, "name": "totalSupply_", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2199, "src": "437:12:16", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 2203, "id": 2205, "nodeType": "Return", "src": "430:19:16" } ] }, "documentation": "@dev total number of tokens in existence", "id": 2207, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "totalSupply", "nodeType": "FunctionDefinition", "parameters": { "id": 2200, "nodeType": "ParameterList", "parameters": [], "src": "391:2:16" }, "payable": false, "returnParameters": { "id": 2203, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2202, "name": "", "nodeType": "VariableDeclaration", "scope": 2207, "src": "415:7:16", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2201, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "415:7:16", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "414:9:16" }, "scope": 2280, "src": "371:83:16", "stateMutability": "view", "superFunction": 2364, "visibility": "public" }, { "body": { "id": 2266, "nodeType": "Block", "src": "677:252:16", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 2221, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 2217, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2209, "src": "691:3:16", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 2219, "isConstant": false, "isLValue": false, "isPure": true, 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{ "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 2246, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2197, "src": "822:8:16", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 2248, "indexExpression": { "argumentTypes": null, "id": 2247, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2209, "src": "831:3:16", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "822:13:16", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 2253, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2211, "src": "856:6:16", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 2249, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2197, "src": "838:8:16", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 2251, "indexExpression": { "argumentTypes": null, "id": 2250, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2209, "src": "847:3:16", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "838:13:16", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 2252, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 2097, "src": "838:17:16", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 2254, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "838:25:16", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "822:41:16", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 2256, "nodeType": "ExpressionStatement", "src": "822:41:16" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 2258, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2753, "src": "883:3:16", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 2259, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "883:10:16", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 2260, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2209, "src": "895:3:16", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 2261, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2211, "src": "900:6:16", "typeDescriptions": { "typeIdentifier": 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"isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "920:4:16", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 2215, "id": 2265, "nodeType": "Return", "src": "913:11:16" } ] }, "documentation": "@dev transfer token for a specified address\n@param _to The address to transfer to.\n@param _value The amount to be transferred.", "id": 2267, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "transfer", "nodeType": "FunctionDefinition", "parameters": { "id": 2212, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2209, "name": "_to", "nodeType": "VariableDeclaration", "scope": 2267, "src": "626:11:16", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 2208, "name": 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"t_bool", "typeString": "bool" }, "typeName": { "id": 2213, "name": "bool", "nodeType": "ElementaryTypeName", "src": "671:4:16", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "670:6:16" }, "scope": 2280, "src": "608:321:16", "stateMutability": "nonpayable", "superFunction": 2380, "visibility": "public" }, { "body": { "id": 2278, "nodeType": "Block", "src": "1196:34:16", "statements": [ { "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 2274, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2197, "src": "1209:8:16", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 2276, "indexExpression": { "argumentTypes": null, "id": 2275, "name": "_owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2269, "src": 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