40 lines
1.3 KiB
Solidity
40 lines
1.3 KiB
Solidity
// SPDX-License-Identifier: MIT
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pragma solidity =0.7.6;
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pragma abicoder v2;
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/// @notice A fork of Multicall2 specifically tailored for the Uniswap Interface
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contract UniswapInterfaceMulticall {
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struct Call {
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address target;
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uint256 gasLimit;
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bytes callData;
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}
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struct Result {
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bool success;
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uint256 gasUsed;
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bytes returnData;
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}
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function getCurrentBlockTimestamp() public view returns (uint256 timestamp) {
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timestamp = block.timestamp;
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}
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function getEthBalance(address addr) public view returns (uint256 balance) {
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balance = addr.balance;
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}
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function multicall(Call[] memory calls) public returns (uint256 blockNumber, Result[] memory returnData) {
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blockNumber = block.number;
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returnData = new Result[](calls.length);
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for (uint256 i = 0; i < calls.length; i++) {
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(address target, uint256 gasLimit, bytes memory callData) =
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(calls[i].target, calls[i].gasLimit, calls[i].callData);
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uint256 gasLeftBefore = gasleft();
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(bool success, bytes memory ret) = target.call{gas: gasLimit}(callData);
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uint256 gasUsed = gasLeftBefore - gasleft();
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returnData[i] = Result(success, gasUsed, ret);
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}
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}
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}
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