mirror of
https://github.com/Instadapp/dsa-connectors.git
synced 2024-07-29 22:37:00 +00:00
70 lines
1.6 KiB
Solidity
70 lines
1.6 KiB
Solidity
//SPDX-License-Identifier: MIT
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pragma solidity ^0.7.0;
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pragma abicoder v2;
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import { InstaConnectors } from "../../common/interfaces.sol";
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contract SwapHelpers {
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/**
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* @dev Instadapp Connectors Registry
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*/
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InstaConnectors internal constant instaConnectors =
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InstaConnectors(0x127d8cD0E2b2E0366D522DeA53A787bfE9002C14);
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struct InputData {
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address buyAddr;
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address sellAddr;
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uint256 sellAmt;
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uint256[] unitAmts;
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bytes4[] swapDatas;
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bytes[] callDatas;
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uint256 setId;
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}
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/**
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*@dev Swap using the dex aggregators.
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*@param _connectors name of the connectors in preference order.
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*@param _inputData data for the swap cast.
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*/
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function _swap(string[] memory _connectors, InputData memory _inputData)
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internal
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returns (bool success, bytes memory returnData)
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{
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uint256 _length = _connectors.length;
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require(_length > 0, "zero-length-not-allowed");
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require(
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_inputData.unitAmts.length == _length,
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"unitAmts-length-invalid"
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);
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require(
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_inputData.callDatas.length == _length,
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"callDatas-length-invalid"
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);
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require(
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_inputData.swapDatas.length == _length,
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"swapDatas-length-invalid"
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);
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// require _connectors[i] == "1INCH-A" || "ZEROX-A" || "PARASWAP-A" || similar connectors
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for (uint256 i = 0; i < _length; i++) {
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bytes memory _data = abi.encodeWithSelector(
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_inputData.swapDatas[i],
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_inputData.buyAddr,
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_inputData.sellAddr,
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_inputData.sellAmt,
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_inputData.unitAmts[i],
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_inputData.callDatas[i],
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_inputData.setId
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);
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(success, returnData) = instaConnectors
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.connectors(_connectors[i])
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.delegatecall(_data);
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if (success) {
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break;
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}
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}
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}
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}
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