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"source": "pragma solidity ^0.4.24;\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) internal balances;\n\n uint256 internal 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(_value <= balances[msg.sender]);\n require(_to != address(0));\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": [ 857 ] }, "id": 858, "nodeType": "SourceUnit", "nodes": [ { "id": 763, "literals": [ "solidity", "^", "0.4", ".24" ], "nodeType": "PragmaDirective", "src": "0:24:5" }, { "absolutePath": "openzeppelin-solidity/contracts/token/ERC20/ERC20Basic.sol", "file": "./ERC20Basic.sol", "id": 764, "nodeType": "ImportDirective", "scope": 858, "sourceUnit": 933, "src": "27:26:5", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "openzeppelin-solidity/contracts/math/SafeMath.sol", "file": "../../math/SafeMath.sol", "id": 765, "nodeType": "ImportDirective", "scope": 858, "sourceUnit": 762, "src": "54:33:5", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 766, "name": "ERC20Basic", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 932, "src": "203:10:5", "typeDescriptions": { "typeIdentifier": "t_contract$_ERC20Basic_$932", "typeString": "contract ERC20Basic" } }, "id": 767, "nodeType": "InheritanceSpecifier", "src": "203:10:5" } ], "contractDependencies": [ 932 ], "contractKind": "contract", "documentation": "@title Basic token\n@dev Basic version of StandardToken, with no allowances.", "fullyImplemented": true, "id": 857, "linearizedBaseContracts": [ 857, 932 ], "name": "BasicToken", "nodeType": "ContractDefinition", "nodes": [ { "id": 770, "libraryName": { "contractScope": null, "id": 768, "name": "SafeMath", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 761, "src": "224:8:5", "typeDescriptions": { "typeIdentifier": "t_contract$_SafeMath_$761", "typeString": "library SafeMath" } }, "nodeType": "UsingForDirective", "src": "218:27:5", "typeName": { "id": 769, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "237:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, { "constant": false, "id": 774, "name": "balances", "nodeType": "VariableDeclaration", "scope": 857, "src": "249:45:5", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "typeName": { "id": 773, "keyType": { "id": 771, "name": "address", "nodeType": "ElementaryTypeName", "src": "257:7:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "249:27:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "valueType": { "id": 772, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "268:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 776, "name": "totalSupply_", "nodeType": "VariableDeclaration", "scope": 857, "src": "299:29:5", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 775, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "299:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "body": { "id": 783, "nodeType": "Block", "src": "442:30:5", "statements": [ { "expression": { "argumentTypes": null, "id": 781, "name": "totalSupply_", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 776, "src": "455:12:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 780, "id": 782, "nodeType": "Return", "src": "448:19:5" } ] }, "documentation": "@dev Total number of tokens in existence", "id": 784, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "totalSupply", "nodeType": "FunctionDefinition", "parameters": { "id": 777, "nodeType": "ParameterList", "parameters": [], "src": "409:2:5" }, "payable": false, "returnParameters": { "id": 780, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 779, "name": "", "nodeType": "VariableDeclaration", "scope": 784, "src": "433:7:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 778, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "433:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "432:9:5" }, "scope": 857, "src": "389:83:5", "stateMutability": "view", "superFunction": 907, "visibility": "public" }, { "body": { "id": 843, "nodeType": "Block", "src": "695:252:5", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 799, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 794, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 788, "src": "709:6:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<=", "rightExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 795, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 774, "src": "719:8:5", "typeDescriptions": { 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"argumentTypes": null, "id": 824, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 786, "src": "849:3:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "840:13:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 830, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 788, "src": "874:6:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 826, "name": "balances", 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"t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 831, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "856:25:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "840:41:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 833, "nodeType": "ExpressionStatement", "src": "840:41:5" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 835, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1236, "src": "901:3:5", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 836, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "901:10:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 837, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 786, "src": "913:3:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 838, "name": "_value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 788, "src": "918:6:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 834, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 931, "src": "892:8:5", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 839, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "892:33:5", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 840, "nodeType": "EmitStatement", "src": "887:38:5" }, { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 841, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "938:4:5", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 792, "id": 842, "nodeType": "Return", "src": "931:11:5" } ] }, "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": 844, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "transfer", "nodeType": "FunctionDefinition", "parameters": { "id": 789, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 786, "name": "_to", "nodeType": "VariableDeclaration", "scope": 844, "src": "644:11:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 785, "name": "address", "nodeType": "ElementaryTypeName", "src": "644:7:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 788, "name": "_value", "nodeType": "VariableDeclaration", "scope": 844, "src": "657:14:5", "stateVariable": false, "storageLocation": "default", 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