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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;

/**
 * @title ForTest
 * @notice 一个简单的特权合约，支持暂停功能和特权地址转移
 * @dev 标准不可升级合约
 */
contract ForTest {
    // ============ State Variables ============

    /// @notice 特权地址（管理员）
    address public owner;

    /// @notice 合约是否暂停
    bool public paused;

    // ============ Events ============

    /// @notice 特权地址转移事件
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /// @notice 合约暂停事件
    event Paused(address indexed account);

    /// @notice 合约恢复事件
    event Unpaused(address indexed account);

    // ============ Errors ============

    /// @notice 非特权地址调用
    error NotOwner();

    /// @notice 合约已暂停
    error ContractPaused();

    /// @notice 合约未暂停
    error ContractNotPaused();

    /// @notice 无效地址
    error InvalidAddress();

    // ============ Modifiers ============

    /// @notice 仅特权地址可调用
    modifier onlyOwner() {
        if (msg.sender != owner) revert NotOwner();
        _;
    }

    /// @notice 仅在合约未暂停时可调用
    modifier whenNotPaused() {
        if (paused) revert ContractPaused();
        _;
    }

    /// @notice 仅在合约暂停时可调用
    modifier whenPaused() {
        if (!paused) revert ContractNotPaused();
        _;
    }

    // ============ Constructor ============

    /// @notice 构造函数，初始化合约
    /// @param _owner 初始特权地址
    constructor(address _owner) {
        if (_owner == address(0)) revert InvalidAddress();

        owner = _owner;
        emit OwnershipTransferred(address(0), _owner);
    }

    // ============ Owner Functions ============

    /// @notice 暂停合约
    /// @dev 仅特权地址可调用，且合约必须未暂停
    function pause() external onlyOwner whenNotPaused {
        paused = true;
        emit Paused(msg.sender);
    }

    /// @notice 恢复合约
    /// @dev 仅特权地址可调用，且合约必须已暂停
    function unpause() external onlyOwner whenPaused {
        paused = false;
        emit Unpaused(msg.sender);
    }

    /// @notice 转移特权地址
    /// @dev 仅特权地址可调用
    /// @param newOwner 新特权地址
    function transferOwnership(address newOwner) external onlyOwner {
        if (newOwner == address(0)) revert InvalidAddress();
        address oldOwner = owner;
        owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }

    /// @notice 放弃特权地址
    /// @dev 仅特权地址可调用，此操作不可逆
    function renounceOwnership() external onlyOwner {
        address oldOwner = owner;
        owner = address(0);
        emit OwnershipTransferred(oldOwner, address(0));
    }
}

{
  "remappings": [
    "@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
    "@uniswap/v3-periphery/=lib/v3-periphery/",
    "@layerzerolabs/solidity-examples/=lib/solidity-examples/",
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
    "forge-std/=lib/forge-std/src/",
    "halmos-cheatcodes/=lib/openzeppelin-contracts/lib/halmos-cheatcodes/src/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "openzeppelin/=lib/openzeppelin-contracts/contracts/",
    "solidity-examples/=lib/solidity-examples/contracts/",
    "v3-periphery/=lib/v3-periphery/contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 888888
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "london",
  "viaIR": false
}

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[{"inputs":[{"internalType":"address","name":"_owner","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"ContractNotPaused","type":"error"},{"inputs":[],"name":"ContractPaused","type":"error"},{"inputs":[],"name":"InvalidAddress","type":"error"},{"inputs":[],"name":"NotOwner","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"account","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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000000000000000000000000399efa78cacd7784751cd9fbf2523edf9efdf6ad

-----Decoded View---------------
Arg [0] : _owner (address): 0x399EfA78cAcD7784751CD9FBf2523eDf9EFDf6Ad

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000399efa78cacd7784751cd9fbf2523edf9efdf6ad