mirror of
https://github.com/Instadapp/dsa-connectors.git
synced 2024-07-29 22:37:00 +00:00
45 lines
1.1 KiB
Solidity
45 lines
1.1 KiB
Solidity
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//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(0x819910794a030403F69247E1e5C0bBfF1593B968);
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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 _datas data for the swap cast.
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*/
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function _swap(string[] memory _connectors, bytes[] memory _datas)
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internal
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returns (
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bool success,
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bytes memory returnData,
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string memory connector
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)
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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(_datas.length == _length, "calldata-length-invalid");
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(bool isOk, address[] memory connectors) = instaConnectors.isConnectors(
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_connectors
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);
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require(isOk, "connector-names-invalid");
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for (uint256 i = 0; i < _length; i++) {
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(success, returnData) = connectors[i].delegatecall(_datas[i]);
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if (success) {
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connector = _connectors[i];
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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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