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Hardhat 编译多个solidity版本的合约

今天由于需要同时验证新版本solidity已废弃的方法“callcode”,以及新版本才支持的方法“staticcall”,所以需要编写两个版本的合约,可以修改hardhat config,支持多个版本的编译器,类似如下

const config: HardhatUserConfig = {
  solidity: {
    compilers: [
      {
        version: "0.8.4"
      },
      {
        version: "0.4.26",
      }
    ]
  },
  ...

使用standard-input-json验证Solidity源码

使用 standard-input-json(以BSC测试链为例)

合约源码

Storage.sol

// SPDX-License-Identifier: MIT

pragma solidity >=0.7.0 <0.9.0;
import "@openzeppelin/contracts/access/Ownable.sol";

contract Storage is Ownable {
    uint256 number;

    function setNumber(uint256 num) public onlyOwner {
        number = num;
    }

    function getNumber() public view returns (uint256) {
        return number;
    }
}

JSON格式的输入

Storage.json

{
    "language": "Solidity",
    "sources": {
        "contracts/Storage.sol": {
            "content": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.7.0 <0.9.0;\nimport \"@openzeppelin/contracts/access/Ownable.sol\";\n\ncontract Storage is Ownable {\n    uint256 number;\n\n    function setNumber(uint256 num) public onlyOwner {\n        number = num;\n    }\n\n    function getNumber() public view returns (uint256) {\n        return number;\n    }\n}"
        },
        "@openzeppelin/contracts/access/Ownable.sol": {
            "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/Context.sol\";\n\n/**\n * @dev Contract module which provides a basic access control mechanism, where\n * there is an account (an owner) that can be granted exclusive access to\n * specific functions.\n *\n * By default, the owner account will be the one that deploys the contract. This\n * can later be changed with {transferOwnership}.\n *\n * This module is used through inheritance. It will make available the modifier\n * `onlyOwner`, which can be applied to your functions to restrict their use to\n * the owner.\n */\nabstract contract Ownable is Context {\n    address private _owner;\n\n    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\n\n    /**\n     * @dev Initializes the contract setting the deployer as the initial owner.\n     */\n    constructor() {\n        _transferOwnership(_msgSender());\n    }\n\n    /**\n     * @dev Returns the address of the current owner.\n     */\n    function owner() public view virtual returns (address) {\n        return _owner;\n    }\n\n    /**\n     * @dev Throws if called by any account other than the owner.\n     */\n    modifier onlyOwner() {\n        require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n        _;\n    }\n\n    /**\n     * @dev Leaves the contract without owner. It will not be possible to call\n     * `onlyOwner` functions anymore. Can only be called by the current owner.\n     *\n     * NOTE: Renouncing ownership will leave the contract without an owner,\n     * thereby removing any functionality that is only available to the owner.\n     */\n    function renounceOwnership() public virtual onlyOwner {\n        _transferOwnership(address(0));\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Can only be called by the current owner.\n     */\n    function transferOwnership(address newOwner) public virtual onlyOwner {\n        require(newOwner != address(0), \"Ownable: new owner is the zero address\");\n        _transferOwnership(newOwner);\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Internal function without access restriction.\n     */\n    function _transferOwnership(address newOwner) internal virtual {\n        address oldOwner = _owner;\n        _owner = newOwner;\n        emit OwnershipTransferred(oldOwner, newOwner);\n    }\n}\n"
        },
        "@openzeppelin/contracts/utils/Context.sol": {
            "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n    function _msgSender() internal view virtual returns (address) {\n        return msg.sender;\n    }\n\n    function _msgData() internal view virtual returns (bytes calldata) {\n        return msg.data;\n    }\n}\n"
        }
    },
    "settings": {
        "optimizer": {
            "enabled": true,
            "runs": 200
        },
        "outputSelection": {
            "*": {
                "*": [
                    "abi",
                    "evm.bytecode",
                    "evm.deployedBytecode",
                    "evm.methodIdentifiers",
                    "metadata"
                ],
                "": [
                    "ast"
                ]
            }
        }
    }
}

content内容:将solidity源码转换为JSON字符串。

Javascript Serializer(推荐方法2、方法3)

Convert/Escapes an object to a JSON string
将solidity源码转换为JSON字符串

方法1.BSC网址

去掉最后的 ”

方法2.字符串转义

// SPDX-License-Identifier: MIT\n\npragma solidity >=0.7.0 <0.9.0;\nimport \"@openzeppelin/contracts/access/Ownable.sol\";\n\ncontract Storage is Ownable {\n    uint256 number;\n\n    function setNumber(uint256 num) public onlyOwner {\n        number = num;\n    }\n\n    function getNumber() public view returns (uint256) {\n        return number;\n    }\n}

方法3. Hardhat项目下

编译合约:

npx hardhat compile

打开artifacts\build-info路径下的json文件
input字段内容

部署合约

部署合约

与Storage.json配置文件相同

BSC浏览器验证合约

https://testnet.bscscan.com/address/0x1b3104004ebda264b88d04afb6ea66d70a2d51ac#code


  1. 转载自:https://learnblockchain.cn/article/3415

hardhat create address

web3

let singer = await web3.eth.accounts.create();

ethers

const pKey = new ethers.Wallet.createRandom();
const signer = new ethers.Wallet(pKey, ethers.provider);