{ "contractName": "PairATokenV2", "abi": [ { "stateMutability": "payable", "type": "receive" }, { "inputs": [ { "internalType": "address", "name": "input", "type": "address" }, { "internalType": "address", "name": "output", "type": "address" }, { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "bytes", "name": "data", "type": "bytes" } ], "name": "swap", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "", "type": "address" }, { "internalType": "address", "name": "", "type": "address" }, { "internalType": "uint256", "name": "amountIn", "type": "uint256" }, { "internalType": "bytes", "name": "", "type": "bytes" } ], "name": "getOutputAmount", "outputs": [ { "internalType": "uint256", "name": "amountOut", "type": "uint256" } ], "stateMutability": "nonpayable", "type": "function" } ], "metadata": 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"source": "// SPDX-License-Identifier: MIT\npragma solidity 0.6.8;\n\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"../interfaces/aave-v2/ILendingPoolV2.sol\";\nimport \"./ISwappaPairV1.sol\";\n\ncontract PairATokenV2 is ISwappaPairV1 {\n\tusing SafeMath for uint;\n\n\tfunction swap(\n\t\taddress input,\n\t\taddress output,\n\t\taddress to,\n\t\tbytes calldata data\n\t) external override {\n\t\t(address poolAddr, uint8 inputType) = parseData(data);\n\t\tuint inputAmount = ERC20(input).balanceOf(address(this));\n\t\tif (inputType == 1) {\n\t\t\t// AToken -> Underlying.\n\t\t\tILendingPoolV2(poolAddr).withdraw(output, inputAmount, to);\n\t\t} else if (inputType == 2) {\n\t\t\t// Underlying -> AToken.\n\t\t\trequire(\n\t\t\t\tERC20(input).approve(poolAddr, inputAmount),\n\t\t\t\t\"PairATokenV2: approve failed!\");\n\t\t\tILendingPoolV2(poolAddr).deposit(input, inputAmount, to, 0x0);\n\t\t}\n\t}\n\n\tfunction parseData(bytes memory data) private pure returns (address poolAddr, uint8 inputType) {\n\t\trequire(data.length == 21, \"PairATokenV2: invalid data!\");\n\t\tinputType = uint8(data[20]);\n assembly {\n poolAddr := mload(add(data, 20))\n }\n\t}\n\n\tfunction getOutputAmount(\n\t\taddress,\n\t\taddress,\n\t\tuint amountIn,\n\t\tbytes calldata\n\t) external override returns (uint amountOut) {\n\t\treturn amountIn;\n\t}\n\n\treceive() external payable {}\n}", "sourcePath": "/home/thezviad_gmail_com/src/swappa/contracts/swappa/PairATokenV2.sol", "ast": { "absolutePath": "project:/contracts/swappa/PairATokenV2.sol", "exportedSymbols": { "PairATokenV2": [ 5712 ] }, "id": 5713, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 5580, "literals": [ "solidity", "0.6", ".8" ], "nodeType": "PragmaDirective", "src": "32:22:48" }, { "absolutePath": "@openzeppelin/contracts/math/SafeMath.sol", "file": "@openzeppelin/contracts/math/SafeMath.sol", "id": 5581, "nodeType": "ImportDirective", "scope": 5713, "sourceUnit": 219, "src": "56:51:48", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/token/ERC20/ERC20.sol", "file": "@openzeppelin/contracts/token/ERC20/ERC20.sol", "id": 5582, "nodeType": "ImportDirective", "scope": 5713, "sourceUnit": 726, "src": "108:55:48", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "project:/contracts/interfaces/aave-v2/ILendingPoolV2.sol", "file": "../interfaces/aave-v2/ILendingPoolV2.sol", "id": 5583, "nodeType": "ImportDirective", "scope": 5713, "sourceUnit": 1091, "src": "164:50:48", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "project:/contracts/swappa/ISwappaPairV1.sol", "file": "./ISwappaPairV1.sol", "id": 5584, "nodeType": "ImportDirective", "scope": 5713, "sourceUnit": 5326, "src": "215:29:48", "symbolAliases": [], "unitAlias": "" }, { "abstract": false, "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 5585, "name": "ISwappaPairV1", 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