// 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) = target.call{gas: gasLimit}(callData);
            uint256 gasUsed = gasLeftBefore - gasleft();
            returnData[i] = Result(success, gasUsed, ret);
        }
    }
}

{
  "compilationTarget": {
    "contracts/lens/UniswapInterfaceMulticall.sol": "UniswapInterfaceMulticall"
  },
  "evmVersion": "istanbul",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}