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File 1 of 1 : UniswapInterfaceMulticall

// SPDX-License-Identifier: MIT
pragma solidity =0.7.6;
pragma abicoder v2;

/// @notice A fork of Multicall2 specifically tailored for the Uniswap Interface
contract UniswapInterfaceMulticall {
    struct Call {
        address target;
        uint256 gasLimit;
        bytes callData;

    struct Result {
        bool success;
        uint256 gasUsed;
        bytes returnData;

    function getCurrentBlockTimestamp() public view returns (uint256 timestamp) {
        timestamp = block.timestamp;

    function getEthBalance(address addr) public view returns (uint256 balance) {
        balance = addr.balance;

    function multicall(Call[] memory calls) public returns (uint256 blockNumber, Result[] memory returnData) {
        blockNumber = block.number;
        returnData = new Result[](calls.length);
        for (uint256 i = 0; i < calls.length; i++) {
            (address target, uint256 gasLimit, bytes memory callData) =
                (calls[i].target, calls[i].gasLimit, calls[i].callData);
            uint256 gasLeftBefore = gasleft();
            (bool success, bytes memory ret) ={gas: gasLimit}(callData);
            uint256 gasUsed = gasLeftBefore - gasleft();
            returnData[i] = Result(success, gasUsed, ret);

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