MultiCall

MultiCall

//SPDX-License-Identifier: Unlicense
pragma solidity ^0.8.3;

contract TestMultiCall {
    function func1() external view returns (uint,uint) {
        return (1,block.timestamp);
    }

    function func2() external view returns (uint,uint) {
        return (2,block.timestamp);
    }

    function getData1() external pure returns (bytes memory) {
        // abi.encodeWithSignature("func1()");  与下面写法等价
        return abi.encodeWithSelector(this.func1.selector);
    }

    function getData2() external pure returns (bytes memory) {
        return abi.encodeWithSelector(this.func2.selector);
    }
}

contract MultiCall {
    function multiCall(address[] calldata targets, bytes[] calldata data)
        external
        view
        returns (bytes[] memory)
    {
        require(targets.length == data.length,"targets.length != data.length");
        bytes[] memory results = new bytes[](data.length);

        for (uint i; i < targets.length; i++) {
            (bool success, bytes memory result) = targets[i].staticcall(data[i]);
            require(success, "static call failed");
            results[i] = result;
        }

        return results;
    }
}

MultiDelegateCall