// SPDX-License-Identifier: GPL-3.0

pragma solidity ^0.8.30;

contract MultiDelegateCall{
    error DelegatecallFailed();

    function multiDelegatecall(bytes[] calldata data)
    external 
    payable 
    returns(bytes[] memory results){
        results = new bytesUnsupported embed;

        for(uint i; i<data.length; i++){
            (bool ok, bytes memory res) = address(this).delegatecall(data[i]);
            if (!ok){
                revert DelegatecallFailed();
            }
            results[i] = res;
        }
    }
}

contract TestMultiDelegatecall is MultiDelegateCall{
    event Log(address caller, string func, uint i);

    function func1(uint x, uint y) external {
        emit Log(msg.sender, "func1", x+y);
    }

    function func2() external returns(uint){
        emit Log(msg.sender, "func2", 2);
        return 111;
    }
}

contract Helper {
    function getFunc1Data(uint x, uint y) external pure returns(bytes memory){
        return abi.encodeWithSelector(TestMultiDelegatecall.func1.selector, x,y);
    }

    function getFunc2Data() external pure returns(bytes memory){
        return abi.encodeWithSelector(TestMultiDelegatecall.func2.selector);
    }
}

多重委托调用有可能会