{ "contractName": "SoxswapOracleLibrary", "abi": [], "bytecode": "0x604c602c600b82828239805160001a60731460008114601c57601e565bfe5b5030600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea165627a7a72305820cb7c0fe5ca76c701281eb735189c710832a2d714df04b2e2c8996fdf8fcb81690029", "deployedBytecode": "0x73000000000000000000000000000000000000000030146080604052600080fdfea165627a7a72305820cb7c0fe5ca76c701281eb735189c710832a2d714df04b2e2c8996fdf8fcb81690029", "sourceMap": "277:1464:6:-;;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": "277:1464:6:-;;;;;;;;", "source": "pragma solidity >=0.4.23 <0.6.0;\r\n\r\nimport '@sonicxchain/soxswap-core/contracts/interfaces/ISoxswapPair.sol';\r\nimport '@sonicxchain/soxswap-lib/contracts/libraries/FixedPoint.sol';\r\n\r\n// library with helper methods for oracles that are concerned with computing average prices\r\nlibrary SoxswapOracleLibrary {\r\n using FixedPoint for *;\r\n\r\n // helper function that returns the current block timestamp within the range of uint32, i.e. [0, 2**32 - 1]\r\n function currentBlockTimestamp() internal view returns (uint32) {\r\n return uint32(block.timestamp % 2 ** 32);\r\n }\r\n\r\n // produces the cumulative price using counterfactuals to save gas and avoid a call to sync.\r\n function currentCumulativePrices(\r\n address pair\r\n ) internal view returns (uint price0Cumulative, uint price1Cumulative, uint32 blockTimestamp) {\r\n blockTimestamp = currentBlockTimestamp();\r\n price0Cumulative = ISoxswapPair(pair).price0CumulativeLast();\r\n price1Cumulative = ISoxswapPair(pair).price1CumulativeLast();\r\n\r\n // if time has elapsed since the last update on the pair, mock the accumulated price values\r\n (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast) = ISoxswapPair(pair).getReserves();\r\n if (blockTimestampLast != blockTimestamp) {\r\n // subtraction overflow is desired\r\n uint32 timeElapsed = blockTimestamp - blockTimestampLast;\r\n // addition overflow is desired\r\n // counterfactual\r\n price0Cumulative += uint(FixedPoint.fraction(reserve1, reserve0)._x) * timeElapsed;\r\n // counterfactual\r\n price1Cumulative += uint(FixedPoint.fraction(reserve0, reserve1)._x) * timeElapsed;\r\n }\r\n }\r\n}\r\n", "sourcePath": "D:/40_SonicX_DEX/soxswap-periphery/contracts/libraries/SoxswapOracleLibrary.sol", "ast": { "absolutePath": "/D/40_SonicX_DEX/soxswap-periphery/contracts/libraries/SoxswapOracleLibrary.sol", "exportedSymbols": { "SoxswapOracleLibrary": [ 3147 ] }, "id": 3148, "nodeType": "SourceUnit", "nodes": [ { "id": 3045, "literals": [ "solidity", ">=", "0.4", ".23", "<", "0.6", ".0" ], "nodeType": "PragmaDirective", "src": "0:32:6" }, { "absolutePath": "@sonicxchain/soxswap-core/contracts/interfaces/ISoxswapPair.sol", "file": "@sonicxchain/soxswap-core/contracts/interfaces/ISoxswapPair.sol", "id": 3046, "nodeType": "ImportDirective", "scope": 3148, "sourceUnit": 3517, "src": "36:73:6", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@sonicxchain/soxswap-lib/contracts/libraries/FixedPoint.sol", "file": "@sonicxchain/soxswap-lib/contracts/libraries/FixedPoint.sol", "id": 3047, "nodeType": "ImportDirective", "scope": 3148, "sourceUnit": 4187, "src": "111:69:6", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": null, "fullyImplemented": true, "id": 3147, "linearizedBaseContracts": [ 3147 ], "name": "SoxswapOracleLibrary", "nodeType": "ContractDefinition", "nodes": [ { "id": 3049, "libraryName": { "contractScope": null, "id": 3048, "name": "FixedPoint", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 4186, "src": "319:10:6", "typeDescriptions": { "typeIdentifier": "t_contract$_FixedPoint_$4186", "typeString": "library FixedPoint" } }, "nodeType": "UsingForDirective", "src": "313:23:6", "typeName": null }, { "body": { "id": 3063, "nodeType": "Block", "src": "521:59:6", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 3060, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 3055, "name": "block", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4564, "src": "546:5:6", "typeDescriptions": { "typeIdentifier": "t_magic_block", "typeString": "block" } }, "id": 3056, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "timestamp", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "546:15:6", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "%", "rightExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_rational_4294967296_by_1", "typeString": "int_const 4294967296" }, "id": 3059, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "hexValue": "32", "id": 3057, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "564:1:6", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "nodeType": "BinaryOperation", "operator": "**", "rightExpression": { "argumentTypes": null, "hexValue": "3332", "id": 3058, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "569:2:6", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "564:7:6", "typeDescriptions": { "typeIdentifier": "t_rational_4294967296_by_1", "typeString": "int_const 4294967296" } }, "src": "546:25:6", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3054, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "539:6:6", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint32_$", "typeString": "type(uint32)" }, "typeName": "uint32" }, "id": 3061, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "539:33:6", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" } }, "functionReturnParameters": 3053, "id": 3062, "nodeType": "Return", "src": "532:40:6" } ] }, "documentation": null, "id": 3064, "implemented": true, "kind": "function", "modifiers": [], "name": "currentBlockTimestamp", "nodeType": "FunctionDefinition", "parameters": { "id": 3050, "nodeType": "ParameterList", "parameters": [], "src": "487:2:6" }, "returnParameters": { "id": 3053, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3052, "name": "", "nodeType": "VariableDeclaration", "scope": 3064, "src": "513:6:6", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" }, "typeName": { "id": 3051, "name": "uint32", "nodeType": "ElementaryTypeName", "src": "513:6:6", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" } }, "value": null, "visibility": "internal" } ], "src": "512:8:6" }, "scope": 3147, "src": "457:123:6", "stateMutability": "view", "superFunction": null, "visibility": "internal" }, { "body": { "id": 3145, "nodeType": "Block", "src": "841:897:6", "statements": [ { "expression": { "argumentTypes": null, "id": 3078, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 3075, "name": "blockTimestamp", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3073, "src": "852:14:6", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 3076, "name": "currentBlockTimestamp", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3064, "src": "869:21:6", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_uint32_$", "typeString": "function () view returns (uint32)" } }, "id": 3077, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "869:23:6", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" } }, "src": "852:40:6", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" } }, "id": 3079, "nodeType": "ExpressionStatement", "src": "852:40:6" }, { "expression": { "argumentTypes": null, "id": 3086, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 3080, "name": "price0Cumulative", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3069, "src": "903:16:6", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 3082, "name": "pair", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3066, "src": "935:4:6", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 3081, "name": "ISoxswapPair", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3516, "src": "922:12:6", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_ISoxswapPair_$3516_$", "typeString": "type(contract ISoxswapPair)" } }, "id": 3083, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "922:18:6", "typeDescriptions": { "typeIdentifier": "t_contract$_ISoxswapPair_$3516", "typeString": "contract ISoxswapPair" } }, "id": 3084, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "price0CumulativeLast", "nodeType": "MemberAccess", "referencedDeclaration": 3463, "src": "922:39:6", "typeDescriptions": { "typeIdentifier": "t_function_external_view$__$returns$_t_uint256_$", "typeString": "function () view external returns (uint256)" } }, "id": 3085, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "922:41:6", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "903:60:6", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 3087, "nodeType": "ExpressionStatement", "src": "903:60:6" }, { "expression": { "argumentTypes": null, "id": 3094, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 3088, "name": "price1Cumulative", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3071, "src": "974:16:6", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 3090, "name": "pair", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3066, "src": "1006:4:6", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 3089, "name": "ISoxswapPair", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3516, "src": "993:12:6", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_ISoxswapPair_$3516_$", "typeString": "type(contract ISoxswapPair)" } }, "id": 3091, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "993:18:6", "typeDescriptions": { "typeIdentifier": "t_contract$_ISoxswapPair_$3516", "typeString": "contract ISoxswapPair" } }, "id": 3092, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "price1CumulativeLast", "nodeType": "MemberAccess", "referencedDeclaration": 3468, "src": "993:39:6", "typeDescriptions": { "typeIdentifier": "t_function_external_view$__$returns$_t_uint256_$", "typeString": "function () view external returns (uint256)" } }, "id": 3093, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "993:41:6", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "974:60:6", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 3095, "nodeType": "ExpressionStatement", "src": "974:60:6" }, { "assignments": [ 3097, 3099, 3101 ], "declarations": [ { "constant": false, "id": 3097, "name": "reserve0", "nodeType": "VariableDeclaration", "scope": 3145, "src": "1149:16:6", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint112", "typeString": "uint112" }, "typeName": { "id": 3096, "name": "uint112", "nodeType": "ElementaryTypeName", "src": "1149:7:6", "typeDescriptions": { "typeIdentifier": "t_uint112", "typeString": "uint112" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 3099, "name": "reserve1", "nodeType": "VariableDeclaration", "scope": 3145, "src": "1167:16:6", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint112", "typeString": "uint112" }, "typeName": { "id": 3098, "name": "uint112", "nodeType": "ElementaryTypeName", "src": "1167:7:6", "typeDescriptions": { "typeIdentifier": "t_uint112", "typeString": "uint112" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 3101, "name": "blockTimestampLast", "nodeType": "VariableDeclaration", "scope": 3145, "src": "1185:25:6", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" }, "typeName": { "id": 3100, "name": "uint32", "nodeType": "ElementaryTypeName", "src": "1185:6:6", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" } }, "value": null, "visibility": "internal" } ], "id": 3107, "initialValue": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 3103, "name": "pair", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3066, "src": "1227:4:6", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 3102, "name": 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