{ "contractName": "TransferHelper", "abi": [], "bytecode": "0x604c602c600b82828239805160001a60731460008114601c57601e565bfe5b5030600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea165627a7a72305820d28b0f284c1c2b4f31ca8fae209f6dd5441aff1f23a36f3e3dcb70e061514b690029", "deployedBytecode": "0x73000000000000000000000000000000000000000030146080604052600080fdfea165627a7a72305820d28b0f284c1c2b4f31ca8fae209f6dd5441aff1f23a36f3e3dcb70e061514b690029", "sourceMap": "140:1559:13:-;;132:2:-1;166:7;155:9;146:7;137:37;252:7;246:14;243:1;238:23;232:4;229:33;270:1;265:20;;;;222:63;;265:20;274:9;222:63;;298:9;295:1;288:20;328:4;319:7;311:22;352:7;343;336:24", "deployedSourceMap": "140:1559:13:-;;;;;;;;", "source": "pragma solidity >=0.5.0;\r\n\r\n// helper methods for interacting with SRC20 tokens and sending SOX that do not consistently return true/false\r\nlibrary TransferHelper {\r\n function safeApprove(\r\n address token,\r\n address to,\r\n uint256 value\r\n ) internal {\r\n // bytes4(keccak256(bytes('approve(address,uint256)')));\r\n (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x095ea7b3, to, value));\r\n require(success && (data.length == 0 || abi.decode(data, (bool))), 'TransferHelper: APPROVE_FAILED');\r\n }\r\n\r\n function safeTransfer(\r\n address token,\r\n address to,\r\n uint256 value\r\n ) internal {\r\n // bytes4(keccak256(bytes('transfer(address,uint256)')));\r\n (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0xa9059cbb, to, value));\r\n require(success && (data.length == 0 || abi.decode(data, (bool))), 'TransferHelper: TRANSFER_FAILED');\r\n }\r\n\r\n function safeTransferFrom(\r\n address token,\r\n address from,\r\n address to,\r\n uint256 value\r\n ) internal {\r\n // bytes4(keccak256(bytes('transferFrom(address,address,uint256)')));\r\n (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x23b872dd, from, to, value));\r\n require(success && (data.length == 0 || abi.decode(data, (bool))), 'TransferHelper: TRANSFER_FROM_FAILED');\r\n }\r\n\r\n function safeTransferSOX(address payable to, uint256 value) internal {\r\n // (bool success, ) = to.call{value: value}(new bytes(0));\r\n bool success = to.send(value);\r\n \r\n require(success, 'TransferHelper: SOX_TRANSFER_FAILED');\r\n }\r\n}\r\n", "sourcePath": "@sonicxchain/soxswap-lib/contracts/libraries/TransferHelper.sol", "ast": { "absolutePath": "@sonicxchain/soxswap-lib/contracts/libraries/TransferHelper.sol", "exportedSymbols": { "TransferHelper": [ 4531 ] }, "id": 4532, "nodeType": "SourceUnit", "nodes": [ { "id": 4381, "literals": [ "solidity", ">=", "0.5", ".0" ], "nodeType": "PragmaDirective", "src": "0:24:13" }, { "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": null, "fullyImplemented": true, "id": 4531, "linearizedBaseContracts": [ 4531 ], "name": "TransferHelper", "nodeType": "ContractDefinition", "nodes": [ { "body": { "id": 4422, "nodeType": "Block", "src": "276:289:13", "statements": [ { "assignments": [ 4391, 4393 ], "declarations": [ { "constant": false, "id": 4391, "name": "success", "nodeType": "VariableDeclaration", "scope": 4422, "src": "354:12:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 4390, "name": "bool", "nodeType": "ElementaryTypeName", "src": "354:4:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4393, "name": "data", "nodeType": "VariableDeclaration", "scope": 4422, "src": "368:17:13", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 4392, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "368:5:13", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "id": 4403, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30783039356561376233", "id": 4398, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "423:10:13", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_157198259_by_1", "typeString": "int_const 157198259" }, "value": "0x095ea7b3" }, { "argumentTypes": null, "id": 4399, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4385, "src": "435:2:13", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4400, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4387, "src": "439:5:13", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_157198259_by_1", "typeString": "int_const 157198259" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 4396, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4561, "src": "400:3:13", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 4397, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodeWithSelector", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "400:22:13", "typeDescriptions": { "typeIdentifier": "t_function_abiencodewithselector_pure$_t_bytes4_$returns$_t_bytes_memory_ptr_$", "typeString": "function (bytes4) pure returns (bytes memory)" } }, "id": 4401, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "400:45:13", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "expression": { "argumentTypes": null, "id": 4394, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4383, "src": "389:5:13", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 4395, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "call", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "389:10:13", "typeDescriptions": { "typeIdentifier": "t_function_barecall_payable$_t_bytes_memory_ptr_$returns$_t_bool_$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) payable returns (bool,bytes memory)" } }, "id": 4402, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "389:57:13", "typeDescriptions": { "typeIdentifier": "t_tuple$_t_bool_$_t_bytes_memory_ptr_$", "typeString": "tuple(bool,bytes memory)" } }, "nodeType": "VariableDeclarationStatement", "src": "353:93:13" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 4418, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 4405, "name": "success", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4391, "src": "465:7:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 4416, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 4409, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4406, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4393, "src": "477:4:13", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 4407, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "477:11:13", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "hexValue": "30", "id": 4408, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "492:1:13", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "477:16:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4412, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4393, "src": "508:4:13", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "argumentTypes": null, "components": [ { "argumentTypes": null, "id": 4413, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "515:4:13", "typeDescriptions": { "typeIdentifier": "t_type$_t_bool_$", "typeString": "type(bool)" }, "typeName": "bool" } ], "id": 4414, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "TupleExpression", "src": "514:6:13", "typeDescriptions": { "typeIdentifier": "t_type$_t_bool_$", "typeString": "type(bool)" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_type$_t_bool_$", "typeString": "type(bool)" } ], "expression": { "argumentTypes": null, "id": 4410, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4561, "src": "497:3:13", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 4411, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "decode", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "497:10:13", "typeDescriptions": { "typeIdentifier": "t_function_abidecode_pure$__$returns$__$", "typeString": "function () pure" } }, "id": 4415, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "497:24:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "477:44:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "id": 4417, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "476:46:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "465:57:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "5472616e7366657248656c7065723a20415050524f56455f4641494c4544", "id": 4419, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "524:32:13", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_3e27be550bb5367a6d8a8b2dd8b5c52ee0710d2d5b26de50062207957ab5bd00", "typeString": "literal_string \"TransferHelper: APPROVE_FAILED\"" }, "value": "TransferHelper: APPROVE_FAILED" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_3e27be550bb5367a6d8a8b2dd8b5c52ee0710d2d5b26de50062207957ab5bd00", "typeString": "literal_string \"TransferHelper: APPROVE_FAILED\"" } ], "id": 4404, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4577, 4578 ], "referencedDeclaration": 4578, "src": "457:7:13", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 4420, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "457:100:13", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4421, "nodeType": "ExpressionStatement", "src": "457:100:13" } ] }, "documentation": null, "id": 4423, "implemented": true, "kind": "function", "modifiers": [], "name": "safeApprove", "nodeType": "FunctionDefinition", "parameters": { "id": 4388, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4383, "name": "token", "nodeType": "VariableDeclaration", "scope": 4423, "src": "201:13:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4382, "name": "address", "nodeType": "ElementaryTypeName", "src": "201:7:13", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4385, "name": "to", "nodeType": "VariableDeclaration", "scope": 4423, "src": "225:10:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4384, "name": "address", "nodeType": "ElementaryTypeName", "src": "225:7:13", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4387, "name": "value", "nodeType": "VariableDeclaration", "scope": 4423, "src": "246:13:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4386, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "246:7:13", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "190:76:13" }, "returnParameters": { "id": 4389, "nodeType": "ParameterList", "parameters": [], "src": "276:0:13" }, "scope": 4531, "src": "170:395:13", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 4464, "nodeType": "Block", "src": "680:291:13", "statements": [ { "assignments": [ 4433, 4435 ], "declarations": [ { "constant": false, "id": 4433, "name": "success", "nodeType": "VariableDeclaration", "scope": 4464, "src": "759:12:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 4432, "name": "bool", "nodeType": "ElementaryTypeName", "src": "759:4:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4435, "name": "data", "nodeType": "VariableDeclaration", "scope": 4464, "src": "773:17:13", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 4434, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "773:5:13", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "id": 4445, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30786139303539636262", "id": 4440, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "828:10:13", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_2835717307_by_1", "typeString": "int_const 2835717307" }, "value": "0xa9059cbb" }, { "argumentTypes": null, "id": 4441, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4427, "src": "840:2:13", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 4442, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4429, "src": "844:5:13", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_2835717307_by_1", "typeString": "int_const 2835717307" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 4438, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4561, "src": "805:3:13", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 4439, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodeWithSelector", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "805:22:13", "typeDescriptions": { "typeIdentifier": "t_function_abiencodewithselector_pure$_t_bytes4_$returns$_t_bytes_memory_ptr_$", "typeString": "function (bytes4) pure returns (bytes memory)" } }, "id": 4443, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "805:45:13", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "expression": { "argumentTypes": null, "id": 4436, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4425, "src": "794:5:13", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 4437, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "call", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "794:10:13", "typeDescriptions": { "typeIdentifier": "t_function_barecall_payable$_t_bytes_memory_ptr_$returns$_t_bool_$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) payable returns (bool,bytes memory)" } }, "id": 4444, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "794:57:13", "typeDescriptions": { "typeIdentifier": "t_tuple$_t_bool_$_t_bytes_memory_ptr_$", "typeString": "tuple(bool,bytes memory)" } }, "nodeType": "VariableDeclarationStatement", "src": "758:93:13" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 4460, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": 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