如何将函数作为参数传递给solid中的合约

Question

我正在尝试创建一个动态规则构建器，我有一个角色管理器合同，看起来像这样:

import "@openzeppelin/contracts/access/Ownable.sol";

// The Ownable contract to manage the contract owner
contract RoleManager is Ownable {
mapping(bytes32 => function(bytes32, address, address[] memory, uint256[] memory, bytes[] memory, string memory) external view returns (bool)) public rules;
// Set the rule for the given role
function setRule(bytes32 role, function(bytes32, address, address[] memory, uint256[] memory, bytes[] memory, string memory) external view returns (bool) rule) public onlyOwner {
rules[role] = rule;
}
//...
}

也许我对function参数的理解是错误的，我想建立一个动态函数，我如何在醚上生成一个函数来传递给这个?

Answer 1

使用界面:

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
import "@openzeppelin/contracts/access/Ownable.sol";
interface IRule {
function rule (bytes32 data, address addr, 
address[] memory addrArr, uint256[] memory uintArr, 
bytes[] memory dataArr, string memory str)
external view returns (bool);
}
contract Demo is Ownable {
mapping(bytes32 => IRule)  public rules;
function setRule(bytes32 role, IRule rule) public onlyOwner {
rules[role] = rule;
}
}