@sonicswap/periphery

{ "contractName": "ExampleSwapToPrice", "abi": [ { "inputs": [ { "internalType": "address", "name": "factory_", "type": "address" }, { "internalType": "contract IUniswapV2Router01", "name": "router_", "type": "address" } ], "stateMutability": "nonpayable", "type": "constructor" }, { "inputs": [], "name": "factory", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "router", "outputs": [ { "internalType": "contract IUniswapV2Router01", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "tokenA", "type": "address" }, { "internalType": "address", "name": "tokenB", "type": "address" }, { "internalType": "uint256", "name": "truePriceTokenA", "type": "uint256" }, { "internalType": "uint256", "name": "truePriceTokenB", "type": "uint256" }, { "internalType": "uint256", "name": "maxSpendTokenA", "type": "uint256" }, { "internalType": "uint256", "name": "maxSpendTokenB", "type": "uint256" }, { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "uint256", "name": "deadline", "type": "uint256" } ], "name": "swapToPrice", "outputs": [], "stateMutability": "nonpayable", "type": "function" } ], "metadata": "{\"compiler\":{\"version\":\"0.6.12+commit.27d51765\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"address\",\"name\":\"factory_\",\"type\":\"address\"},{\"internalType\":\"contract IUniswapV2Router01\",\"name\":\"router_\",\"type\":\"address\"}],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"inputs\":[],\"name\":\"factory\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"router\",\"outputs\":[{\"internalType\":\"contract IUniswapV2Router01\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"tokenA\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"tokenB\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"truePriceTokenA\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"truePriceTokenB\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"maxSpendTokenA\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"maxSpendTokenB\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"deadline\",\"type\":\"uint256\"}],\"name\":\"swapToPrice\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"kind\":\"dev\",\"methods\":{},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"/var/www/Sonic/sonicswap-periphery/contracts/examples/ExampleSwapToPrice.sol\":\"ExampleSwapToPrice\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"/var/www/Sonic/sonicswap-periphery/contracts/examples/ExampleSwapToPrice.sol\":{\"keccak256\":\"0x13388a71bf4dda023e5bb14a611feb906e1e9db2b7ba607b9dc6072d2b5b4174\",\"license\":\"GPL-3.0\",\"urls\":[\"bzz-raw://a30e4ffb0ae8d383fcecd252847b0398e6a8a11074eb78c2f3f74fe5371173ef\",\"dweb:/ipfs/QmP37V1uHJP7FXFEeSZzoswcQhJUxU8BEY7fzmk2hVwSX4\"]},\"/var/www/Sonic/sonicswap-periphery/contracts/interfaces/IERC20.sol\":{\"keccak256\":\"0x67fa338c5faea823082967992d43d2222446909ad63afa3c826a590b9a7b0cec\",\"license\":\"GPL-3.0\",\"urls\":[\"bzz-raw://cfb5c642ffb05e054d1a246994e17aa368fc2bfe4d0f20f2c9e08629a8ee4473\",\"dweb:/ipfs/QmZ6H5boZnm2K5pAgGjf12KXMfNFdNcUsHKLjY7B34xyWx\"]},\"/var/www/Sonic/sonicswap-periphery/contracts/interfaces/IUniswapV2Router01.sol\":{\"keccak256\":\"0x7bf9a68b5be399ce542367291361819989039cdca993e8d60f4dd9c723ff4740\",\"license\":\"GPL-3.0\",\"urls\":[\"bzz-raw://9043b6ee74ee1df7fc0fb82b20b69ca97e6edd1cb05eef62c87b29f0cd71bc97\",\"dweb:/ipfs/Qme9RNhgu9R1ypJ1gUgEd8ZVJSFMciAdpLcWQ2UTAPkMUi\"]},\"/var/www/Sonic/sonicswap-periphery/contracts/libraries/SafeMath.sol\":{\"keccak256\":\"0x97845129a51dbb1869a765595d1c671fa473b97ef800756402afaadc7640a94e\",\"license\":\"GPL-3.0\",\"urls\":[\"bzz-raw://5928803fe14654103d3f15b57b5b8df40b98f58cbe4e7044888f092f2462af04\",\"dweb:/ipfs/QmdnB83EBtNjwoKFHizxsTo6e2ytKN97SCvYnX28p75DCu\"]},\"/var/www/Sonic/sonicswap-periphery/contracts/libraries/UniswapV2Library.sol\":{\"keccak256\":\"0x97bae257510f91855e0f098176f8dbb967702f788492884bca5886dc1d1aec7d\",\"license\":\"GPL-3.0\",\"urls\":[\"bzz-raw://310af80b5807f9ca7b8da55e529f44d41cd2f897511191f40d85d41e351bbeb4\",\"dweb:/ipfs/QmXMrQD79HZXN7JrHqNGYp3AKTSN7Kw8TjwrUw8Z33jFU6\"]},\"/var/www/Sonic/sonicswap-periphery/contracts/libraries/UniswapV2LiquidityMathLibrary.sol\":{\"keccak256\":\"0x9f8aca4fd78e50148b944be7b6d2158eb2ee902fe98e86b1bc819f4f95172b00\",\"license\":\"GPL-3.0\",\"urls\":[\"bzz-raw://a22de09125698ff3a7f13fd6fcf6f39de2816b562ed629d2b9ae2270a74e1617\",\"dweb:/ipfs/QmYCZcAzcMd2Vqf4Epb1UR6ZU1vYT48odVBB6oXnNseEmN\"]},\"@sonicswap/core/contracts/interfaces/IUniswapV2Factory.sol\":{\"keccak256\":\"0xf493893f508c8caa2f5923d1a39080fc5f1f362ea1f1d65ffc38b7782b35c4b7\",\"license\":\"GPL-3.0\",\"urls\":[\"bzz-raw://993a51b20f6d79edb33069524ee3a66378f8687d3df52e279561c4ef72e17cb2\",\"dweb:/ipfs/QmQSmgeRkVyA4jyShZStAWVt1CWNZQ8JvYmc2V2jgEUNEE\"]},\"@sonicswap/core/contracts/interfaces/IUniswapV2Pair.sol\":{\"keccak256\":\"0xa87a1a8e9d72090e25812f396a9c0766a715dda52d8b6115ca0ab3f2a9c10f87\",\"license\":\"GPL-3.0\",\"urls\":[\"bzz-raw://3b179da8f464eaa162ef0f9cfac56989d6fb5aa9667bebd23b355d93ea3ff10b\",\"dweb:/ipfs/QmcgYA55h3VJJRo7fFFNSDDDspdnJVTW83aH657v4E9bGZ\"]},\"@sonicswap/lib/contracts/libraries/Babylonian.sol\":{\"keccak256\":\"0xc2389737a1d4954f93ed88099f8833ccc350a62b8b29b61c2a24f237eb4649bc\",\"license\":\"GPL-3.0-or-later\",\"urls\":[\"bzz-raw://3d95218a6f0c7c5030e1f81aabcfe297449bf8bb92fcac1c4ba9bcfc8d61e62b\",\"dweb:/ipfs/QmXzJQLQfgqCuxL5JGMrKRQf5ziRNvQiQkNK3ZK6Lkn4CR\"]},\"@sonicswap/lib/contracts/libraries/FullMath.sol\":{\"keccak256\":\"0x074f43cf798f046118ed21bb9859a7fa1074b9581fe315c8702d6d292fdb2784\",\"license\":\"CC-BY-4.0\",\"urls\":[\"bzz-raw://55a5cb6c5ae9ccc1e6870315bfa5f23f4c758db606f6a292fdff2224fcec082e\",\"dweb:/ipfs/QmRZayK4DWdWHaape9XcVj6VobzX7en7Tejk7gbzv7CHTy\"]},\"@sonicswap/lib/contracts/libraries/TransferHelper.sol\":{\"keccak256\":\"0x8cb60b71be09222b2e240c2e5975788f8a51fa41e6a360c8041a02905a8af0ba\",\"license\":\"GPL-3.0-or-later\",\"urls\":[\"bzz-raw://671ff2dbbb15d7a9c3a1c248ded68a7a4e3d713a2d3c357259fe1a4a1275988a\",\"dweb:/ipfs/QmUTrzyGpApw16uBZVuYjCdsZjdsy1Ath88qYzArkGKE7z\"]}},\"version\":1}", 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"source": "// SPDX-License-Identifier: GPL-3.0\npragma solidity =0.6.12;\n\nimport '@sonicswap/core/contracts/interfaces/IUniswapV2Pair.sol';\nimport '@sonicswap/lib/contracts/libraries/Babylonian.sol';\nimport '@sonicswap/lib/contracts/libraries/TransferHelper.sol';\n\nimport '../libraries/UniswapV2LiquidityMathLibrary.sol';\nimport '../interfaces/IERC20.sol';\nimport '../interfaces/IUniswapV2Router01.sol';\nimport '../libraries/SafeMath.sol';\nimport '../libraries/UniswapV2Library.sol';\n\ncontract ExampleSwapToPrice {\n using SafeMath for uint256;\n\n IUniswapV2Router01 public immutable router;\n address public immutable factory;\n\n constructor(address factory_, IUniswapV2Router01 router_) public {\n factory = factory_;\n router = router_;\n }\n\n // swaps an amount of either token such that the trade is profit-maximizing, given an external true price\n // true price is expressed in the ratio of token A to token B\n // caller must approve this contract to spend whichever token is intended to be swapped\n function swapToPrice(\n address tokenA,\n address tokenB,\n uint256 truePriceTokenA,\n uint256 truePriceTokenB,\n uint256 maxSpendTokenA,\n uint256 maxSpendTokenB,\n address to,\n uint256 deadline\n ) public {\n // true price is expressed as a ratio, so both values must be non-zero\n require(truePriceTokenA != 0 && truePriceTokenB != 0, \"ExampleSwapToPrice: ZERO_PRICE\");\n // caller can specify 0 for either if they wish to swap in only one direction, but not both\n require(maxSpendTokenA != 0 || maxSpendTokenB != 0, \"ExampleSwapToPrice: ZERO_SPEND\");\n\n bool aToB;\n uint256 amountIn;\n {\n (uint256 reserveA, uint256 reserveB) = UniswapV2Library.getReserves(factory, tokenA, tokenB);\n (aToB, amountIn) = UniswapV2LiquidityMathLibrary.computeProfitMaximizingTrade(\n truePriceTokenA, truePriceTokenB,\n reserveA, reserveB\n );\n }\n\n require(amountIn > 0, 'ExampleSwapToPrice: ZERO_AMOUNT_IN');\n\n // spend up to the allowance of the token in\n uint256 maxSpend = aToB ? maxSpendTokenA : maxSpendTokenB;\n if (amountIn > maxSpend) {\n amountIn = maxSpend;\n }\n\n address tokenIn = aToB ? tokenA : tokenB;\n address tokenOut = aToB ? tokenB : tokenA;\n TransferHelper.safeTransferFrom(tokenIn, msg.sender, address(this), amountIn);\n TransferHelper.safeApprove(tokenIn, address(router), amountIn);\n\n address[] memory path = new address[](2);\n path[0] = tokenIn;\n path[1] = tokenOut;\n\n router.swapExactTokensForTokens(\n amountIn,\n 0, // amountOutMin: we can skip computing this number because the math is tested\n path,\n to,\n deadline\n );\n }\n}\n", "sourcePath": "/var/www/Sonic/sonicswap-periphery/contracts/examples/ExampleSwapToPrice.sol", "ast": { "absolutePath": "/var/www/Sonic/sonicswap-periphery/contracts/examples/ExampleSwapToPrice.sol", "exportedSymbols": { "ExampleSwapToPrice": [ 4951 ] }, "id": 4952, "license": "GPL-3.0", "nodeType": "SourceUnit", "nodes": [ { "id": 4753, "literals": [ "solidity", "=", "0.6", ".12" ], "nodeType": "PragmaDirective", "src": "36:24:7" }, { "absolutePath": "@sonicswap/core/contracts/interfaces/IUniswapV2Pair.sol", "file": "@sonicswap/core/contracts/interfaces/IUniswapV2Pair.sol", "id": 4754, "nodeType": "ImportDirective", "scope": 4952, "sourceUnit": 8354, "src": "62:65:7", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@sonicswap/lib/contracts/libraries/Babylonian.sol", "file": "@sonicswap/lib/contracts/libraries/Babylonian.sol", "id": 4755, "nodeType": "ImportDirective", "scope": 4952, "sourceUnit": 8557, "src": "128:59:7", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@sonicswap/lib/contracts/libraries/TransferHelper.sol", "file": "@sonicswap/lib/contracts/libraries/TransferHelper.sol", "id": 4756, "nodeType": "ImportDirective", "scope": 4952, "sourceUnit": 9845, "src": "188:63:7", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "/var/www/Sonic/sonicswap-periphery/contracts/libraries/UniswapV2LiquidityMathLibrary.sol", "file": "../libraries/UniswapV2LiquidityMathLibrary.sol", "id": 4757, "nodeType": "ImportDirective", "scope": 4952, "sourceUnit": 6547, "src": "253:56:7", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "/var/www/Sonic/sonicswap-periphery/contracts/interfaces/IERC20.sol", "file": "../interfaces/IERC20.sol", "id": 4758, "nodeType": "ImportDirective", "scope": 4952, "sourceUnit": 5036, "src": "310:34:7", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "/var/www/Sonic/sonicswap-periphery/contracts/interfaces/IUniswapV2Router01.sol", "file": "../interfaces/IUniswapV2Router01.sol", "id": 4759, "nodeType": "ImportDirective", "scope": 4952, "sourceUnit": 5360, "src": "345:46:7", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "/var/www/Sonic/sonicswap-periphery/contracts/libraries/SafeMath.sol", "file": "../libraries/SafeMath.sol", "id": 4760, "nodeType": "ImportDirective", "scope": 4952, "sourceUnit": 5609, "src": "392:35:7", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "/var/www/Sonic/sonicswap-periphery/contracts/libraries/UniswapV2Library.sol", "file": "../libraries/UniswapV2Library.sol", "id": 4761, "nodeType": "ImportDirective", "scope": 4952, "sourceUnit": 6081, "src": "428:43:7", "symbolAliases": [], "unitAlias": "" }, { "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "contract", "documentation": null, "fullyImplemented": true, "id": 4951, "linearizedBaseContracts": [ 4951 ], "name": "ExampleSwapToPrice", "nodeType": "ContractDefinition", "nodes": [ { "id": 4764, "libraryName": { "contractScope": null, "id": 4762, "name": "SafeMath", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5608, "src": "513:8:7", "typeDescriptions": { "typeIdentifier": "t_contract$_SafeMath_$5608", "typeString": "library SafeMath" } }, "nodeType": "UsingForDirective", "src": "507:27:7", "typeName": { "id": 4763, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "526:7:7", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, { "constant": false, "functionSelector": "f887ea40", "id": 4766, "mutability": "immutable", "name": "router", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4951, "src": "540:42:7", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_contract$_IUniswapV2Router01_$5359", "typeString": "contract IUniswapV2Router01" }, "typeName": { "contractScope": null, "id": 4765, "name": "IUniswapV2Router01", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5359, "src": "540:18:7", "typeDescriptions": { "typeIdentifier": "t_contract$_IUniswapV2Router01_$5359", "typeString": "contract IUniswapV2Router01" } }, "value": null, "visibility": "public" }, { "constant": false, "functionSelector": "c45a0155", "id": 4768, "mutability": "immutable", "name": "factory", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4951, "src": "588:32:7", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4767, "name": "address", "nodeType": "ElementaryTypeName", "src": "588:7:7", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "public" }, { "body": { "id": 4783, "nodeType": "Block", "src": "692:61:7", "statements": [ { "expression": { "argumentTypes": null, "id": 4777, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 4775, "name": "factory", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4768, "src": "702:7:7", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 4776, "name": "factory_", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4770, "src": "712:8:7", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "702:18:7", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 4778, "nodeType": "ExpressionStatement", "src": "702:18:7" }, { "expression": { "argumentTypes": null, "id": 4781, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 4779, "name": "router", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4766, "src": "730:6:7", "typeDescriptions": { "typeIdentifier": "t_contract$_IUniswapV2Router01_$5359", "typeString": "contract IUniswapV2Router01" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 4780, "name": "router_", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4772, "src": "739:7:7", "typeDescriptions": { "typeIdentifier": "t_contract$_IUniswapV2Router01_$5359", "typeString": "contract IUniswapV2Router01" } }, "src": "730:16:7", "typeDescriptions": { "typeIdentifier": "t_contract$_IUniswapV2Router01_$5359", "typeString": "contract IUniswapV2Router01" } }, "id": 4782, "nodeType": "ExpressionStatement", "src": "730:16:7" } ] }, "documentation": null, "id": 4784, "implemented": true, "kind": "constructor", "modifiers": [], "name": "", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 4773, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4770, "mutability": "mutable", "name": "factory_", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4784, "src": "639:16:7", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4769, "name": "address", "nodeType": "ElementaryTypeName", "src": "639:7:7", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4772, "mutability": "mutable", "name": "router_", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4784, "src": "657:26:7", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_contract$_IUniswapV2Router01_$5359", "typeString": "contract IUniswapV2Router01" }, "typeName": { "contractScope": null, "id": 4771, "name": "IUniswapV2Router01", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5359, "src": "657:18:7", "typeDescriptions": { "typeIdentifier": "t_contract$_IUniswapV2Router01_$5359", "typeString": "contract IUniswapV2Router01" } }, "value": null, "visibility": "internal" } ], "src": "638:46:7" }, "returnParameters": { "id": 4774, "nodeType": "ParameterList", "parameters": [], "src": "692:0:7" }, "scope": 4951, "src": "627:126:7", "stateMutability": 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