// File: contracts/ARTDAYCARDS.sol




// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/// @title: ARTDAY CARDS
/// @author: manifold.xyz

import "./ERC721Creator.sol";

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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//                                                                                                                                            //
//    ▒████   █    ▓████████    ▓████    ▒██░  █████▓    ▒▓░▒▒▒░░▒██▒   ▓███▓  ▓█▓▓▓▓▓▒▓████░     ███  ▓████    ▒████        ▒████░███        //
//    ███▓   ░█▒ ░████████░   ▒███▓    ▓██░  ▓████▒█▓▓████▒      ▒▓▓▒▓▓▓▒░░▒▒▒ ▒██████▒    ░  ▒    ░██▓  ░████░   ▒███▓        ▓█▒ ▓███░      //
//    ██░   ████░███████░   ▓███▒   ▒██▓   ▒██▒   ░███████ ▒██████▒  ░▒▓▒▒▓███▓      ▓█       ▓███▓  ▓███░  ▓███▓   ▒███▓      ░▓   ░████     //
//    ▒   ▒███▓   ▒███░   ▓███░   ███▒   ▒▒        ▓██▒      ░▒██▓▓▓▒▒▒▒▒▓▓▓▒▒▒░ ░▓███████▓░ ▒████████▓▓███▓  ░███▓   ░███▓  ░▓███▒   ▓███    //
//       ████       ▓   ▓███   ░███░  ░████        ▒██▓▒▓▓▓▒░ ░▒▓▓▓▓█▓▓▓▒░░░░░░▒▒▒██▓▓▒▒▒▒▒  ▓████████░  ░▓██▓   ▓███   ▒███░███████   ░██    //
//      ███▓      ░███░███   ▒███▒  ███████▓▒▒▒ ▒███████████▓▒░░     ░░▒▒▓▓███████▓▓▒           ▓█▓▓▓▒      ░██▓   ▓███   ▓   ███████▒   █    //
//    ▓███░      ▓██▓  ▒▓  ░███▓ ▒███▒░ ░▒▓███▒   ▒█▓░    ▒██▓▓▒▓█████▓▓▒▒░     ▒▒▒░░ ▓████▓▒ ▓███▒   ░▓███▒   ▓█░   ▓██▒▓██░  ░███████       //
//    ███      ░███░  ▒██▒▓███▓▒▓▓   ░▓█████▒      ████▓░▒█▓▒▒ ▒██▒  ░░▒▒▓▓███▒ ░▓█▓▓▒ ▓▓▒    ██████▓     ░████▒░▓▒   ░▓  ▓██▓   ▓██████      //
//    █▓      ▓██▓   ███▒  ▒█▒     ▓███▒  ▓████  ░▒  ░▓█   ██▓  ▒██░ ▒█▓▓▒ ▒██  ▓██▒ ░███ ▒███▓▓██    ▒██▒   ░█████▓ ▒██▓   ███░  ▒██████     //
//    ░      ███▒  ▒██▓     █   ░███▒    ▓████▒███░░▓▓▓█▓█▓▒█▒  █▓▒░█▓░▒▒▓▓░░▓▓░ ██▓ ▓▒░▒ ▒▒▒█▓   ▓░   ▒████▓   ▓███░█████░  ▓██▓   ██████    //
//          ███   ███░  ░▓▒███▒▒██   ▒█▒  ░▒  ▒██▒ ░░▒ ░▒▒▓█▓░▒██▓  ▓▓░ ░▒▒  ▒▒░   ░   ░▒▓▓▓▓▓█▓  ▓██▒███▓ ▒███  ▓▒   ▓▒███▓  ░███   █████    //
//        ░███   ███   ██ ███▒  █  ████ ▒██  ▓██  ▒██▓█▓▒ ▓█  ▒▓ ▒▓                ▒░  ░     ░▓██░ ▒██  ▒█    ██ ██▓   █  ███   ███   ▓███    //
//       ▒██▓  ░██▓  ▓█▓ ▓██  ▒██ ▓█ ▓▓▒███▓ ░██ ░█▓ ▒▒█▒░▒▓▒  ░   ░▒▒▒▓▓█████████████▓▓▒░░░▒  ▓█░░▓█▒░  ▓▒▒█ ▒█  ▓██  ▒█▒ ▒██▒  ▓██░  ▓██    //
//      ▒██▓  ▒██▒  ██░ ▒██  ▓██  ▓▓ █░  ██  ▒██  █▓▓▓▒░█   ░░░▓▓██████████████████████████▓▒  ▒▓  ▓██  ██▓░█▒░██  ▒██  ▓█▓  ██▓  ▓██░  ▓█    //
//      ██▓  ▒██░ ▓██   ██  ██▓  ░▓▒ █ ▓█▒ ▒░██▒▓█  █▒░   ▒▓████████▓▒▒░░       ░░░▒▒▒▓███████▓░ ░  ▓▓█▓ ▒█ █▒░▓██▒ ░██  ███  ▓██  ▓██░  █    //
//    ▒██▓  ▒██  ███   ▓█  ▓██░██ ▓██▓ █░ █▒ █  ▒█▓    ▒▓█████▓▓▒   ░▒▒▒▓░ ▒▓    ░       ▒▓█████▓▒░ █▒ █▓ █▒  ▒█  █  ░██ ▒███  ░██  ▓██░      //
//    ███  ░██  ███    █  ▒█▓▒██  ░▓  ██ ██░▓▓▓▒  ▒░▒▓█████▓░     ░██▓▒██░ ██   ▓█░  ▓█░    ▒█████▓  ▓ ░█ ░██▒███  ▒▒ ▓██ ████   ██  ▓██      //
//    ██   ██░ ██▓▓▓▓░ ▓  ▓░  ▓▒▒█  ▓█▓░▒░█░░▓▓▒▒ ░█████▓▒   ▓░   ██   ██  ██   ██   ██░▒▓▒   ▒████▓▒░ ▓▓█▒ ░██ ▓▓░███▒██▒█▓░▒░▒  █▓  ███     //
//    █   ██▒ ██  ████▒  █    ███████▒▓█░░█ ▓   ▓████▓▒     ▒█   ██░  ▒█▓ ░██   ██  ▓██ ░███    ▓████▒ ▓▓ ▒▓       ████ ██▓    ██  █▒  ██▓    //
//    ░  ██▓ █▒  ██████ ███  ██░  ▒    █▒▒ ▓▒ ▓████▓░░  ▓   █▓  ▒██   ▒█  ░█▓  ▒█▒  ██▒   ▓██▒   ▒████▒░▒ ████▒██▓ ░██   █      ██▒ █░ ░██    //
//      ▒██ █░  ██████▓█████░   ▓█░▓█▓ ██░ ░▒▓████░ ▓█  █  ▒██▓ ██▒   ▒░  ▓█▒  ██  ░██░     ██▓   ▒████░  █▒ ░█ ▓███▓     ▒      ██▓ █  ▓█    //
//      ██▒█░  ▒█████▒ ▓███▓ ▒▒██ ▓▓▓▓ ░░▒▓▒████▒  ███  █████  ▒██   █▒  ▒██  ░██  ▓██      ████   ▒███▓ ▒█░▒▒▒█  ▓▓█░   ▒█▓     ▓██▓░▒  █    //
//     ▓██▓░   ▒   ▓▒  ▒   ██▒▓█ ░▓ ▓▓█▓ ░█████   █▓▒█▓███░█▒  ██   ██   ██   ▓█▒  ██▒     ██▒▓██░  ▓███▓  ░▓█▒██ ░▓  ███▒██▒░███▓███▓▒  ▒    //
//    ░██▓░  ░█    ▒   █  ░█ ░█  █▓▓▒ ▒░░████▓   ██▓██▓░▓█▒█  ▒█▓ ▒██▒  ▒█▒  ░██  ▒██     ░██  ▒█▓   ▓███  ▓▒▒▒ ██ ██ ▓██ ███▓████ ▓██▓▒      //
//    ███▒  ░█▓   ░█░  ██ ▓  ▓▓█  ▓▒▓▒ ▓████▒   ███▓██   ██▓  ██████▒  ░███████▒ ▒██░     ▓█▓         ███▒░░░▓▒██░▒▒██▒█  ██▓ ████░ ███▓      //
//    ██▓   ██    ██▒  ██▓▓██ ▒█▒█▓ ▒ ▓████░  ▓██▓  ▒█   ▒▓   ▓▒░      ░▒░░░░   ▒█████▓▒  ▓█  ▒▓▓▓▒▒  ▒███ ▒░█░ ▓ ▓█  ▒▒  ██▒  ████  ███░     //
//    ██░  ███ ▓█▓██▓  █ ▒ ██  █  ▓█░▓███▓░ ▓███░   ▒█            ░▒▓▒▒░         ░▒▒▓████░░   ▒▓█████▓▒███░░▒ ▒██ ██  █▓█ ██▒  ▒ ▒█   ███     //
//    ██  ▒██▓███ ██▓ ▓ ░█  ▓  █▒▒░ ░████▓▓████▒    ▒▓▓███▓░    ▓██████████▒                  ░    ▓██████░ ▓█▓▓▓░██▒██ ▓█▒█░  █   ░  ▓██     //
//    █▒  ███ ██▒ ▓█▓█▓ ██▒███▒███▒▒████▓▒▓░ █▓  ▒███████░    ▓████▒░░▒▒▓████▒            ▓██████▓░  ▓████░ ░▒▒   ▓   ▓  █░ ▒ ▒█▓  █   ██░    //
//    █  ░██  ██  ░░ █▒▒█ ████  ▓  ▓███▓    ░▓  ░▓▓░  ▓██    ███▓         ░███▒         ▓████▓▒▒████  ░███▓ ░▒▓█▒██    █ ▓▒ ██▓██  ██  ██▓    //
//    █  ▓██  █▓  ▓  █▓▓  ░  ▓▓ ▓▓ ▓███▒             ░███▓  ███▒            ▓█▓░      ░███▓      ░███░ ░███▒ ░▓ ▒█▒░██▓██▒▒ ██▒██▒ ██  ▒██    //
//    ▓  ██▒   ▓███  ██  █▓░▒▓█▓▒ ▒███▓          ░▓█▓▓▓███ ░██▓       ▒▒▒░    ░      ░███▒         ███  ▓██▓ ░ █▒▒ ░▒▓░ ██  ██   ▓███▓  ██    //
//    ▒  ██  ▓░▓▓██  █▓ ▒█▒██ ▒░█ ▓███▒           ▒▓▓▒▓███ ▒██░     ▒█████▓          ▓██░          ░██▒ ▒███  ▒▒ █▓█  ▓ ▓█░ ██  ░░▓░██  ██    //
//       ██  ██▒ ██  █▒ ██ ▒▒▓█ ▓▒▓███    ART     ░▓▓▓▒███ ▒██░    ▓█▓▓████          ░▒      ▒▓▓▒    ▒░ ░███▒ █░ █ ▒▓▓█  █▒ ██  █▓  ██  ██    //
//    ▒▒▒▓▓▒▒▓▓▒░▓▓░▒▓▒░▓▓░▒▒▓▓░░▒███▓             ▒▓▒▒███ ░██░   ▒██  ▓███░    ░▒  ░░      ▓█████      ░███▒ ▒▒▒▓░▒▓▒▓▒▒▓▓░▓▓▒▒▓▓▒▒▓▓▒░▓▓    //
//    ███  ██  ██  ██ ▓█  █▓▓▒ █ ░███▓            ░▒▓▒▓███  ▒▓    ███▓▓████     ██  ▒█▓    ██▒▓███▒     ▒███░▒ ▓█ █▓▒▒ ██ ▒█  ██ ░██  ██      //
//    ▓██  ██ ▓░▓  ██ ▒█▒ █ ░█▓█ ▒███▓    DAY     ▒▓▓▒▓██▓        ▓████████    ▒██   ██▒  ▒██░▒████    ▒███▓   ▓█ ▒ ██ █▓ ▓█  ██▒▓▓█  ██      //
//    ▒██  ▓███▒   ██ ░██  ▒░▓ ░ ▓███▓           ░▒▒▒▒▓██▓ ▒▒      ███████     ██▒   ░██▒ ▓████████   ▓███▓  ░█ █▓█▒█▓██  ██  ███▓ ░ ▒██      //
//     ██░ ░██▒▓██ ██ ▒▒█████  █▒▓███▓          ▒▓█▓▒▒███▒▒██░     ░█████▓   ░██▓  ░█▓  ▒  ███████▓  ▓███▓  ▒▒▓▓▒ ██  ░  ▓▓█  █  ▒▓  ██▓      //
//     ██▓  ██  ██▓██ ▓▒░█ ░▒▒██ ▓███▓   CARDS   ▓█▓▒▒██▓░███░       ▒▓▓░    ▓█░   ▒██▓     ██████▒ ▒███▓ ░ ▒▓▒▒▓  ▓▒██ ▓▓▒█  ░  ██  ██▒ ░    //
//     ▓██  ▒█  ██▒ ▓ ▒█  ░   ▓  ▓███▓           ▒▓▓▓▓██▒░███░                     ▓████▒    ░▓█▓░  ███▓   █▓▓▓▒██▒██████ ▓█▒█▓ ░██ ▓██  ▓    //
//      ██▒  ▒   █  ░▓░█▒ ██▓▓█  ▒███▓           ▒▓▓▓██▓  ███▒                    ▓██▓▓█▓▒         ▓███░ ▒░█▒ ░███ ▒▒  █▓ ▓▒███ ███▓██▒  █    //
//      ███   ▓  ▒  ▒██▒█▒█▒ ██░▓▒███▓           ▒▓▓██▓░ ▒████                    ▒▒▓███▓▒         ███▓ ░▒▒▓ █▓  ▓  █▓ ▓ ▒  ▓██▓██░███   █    //
//      ▒███  ████  ▒██  ▒▒  █▓ ░ ▓███░          ▓████▓▓██████▓    ░▒▒  ▒▓░      ░░░▒▒            ░███▒  ░█▒▓░▓█▒█░ ██▓▓██  ▓██    ██   ▓█    //
//       ▓██▓ ▓███▓ ▓██  █▒██▓▓ ▓▒▒███▓         ▓████████▓▒████▓ ▒▓████▓██▓▒▒▒  ▓██▓▒▒▓▒░░▓██▓▒░  ░███▒ ░█▒░▓░▓  █▒░░ ▒ ██  ▒█▒   ▓█▒  ░██    //
//    ▓  ▒███▒ ████▒███ ▓█▒ █▒ █▓  ▓███▒       ▓████▒████▓  ▓███▓██▓ ▒██▓▓█████▓█▓▓██▓▒███▓▒█████▒ ███▒░ ▓▒░▓▓▓█  █▒ █▒ ░█   ▓    █▓   ▓██    //
//    █  ░▒███▓▓███▓███▒███  █  █▒ ▒████▓░░▒▓██████  ████▓   ▓████▓  ▒█▓░▓█▓ ▓██▓▒▓██▓▒███▒░██▓░██▒▓██▓  ██░▓ ▓▓ ██ ██   ▓  ░▒   ░░   ▓██▓    //
//    ██  ▓░███▒ ▒░  ██▓   ▒▓░▒  █▒░▒▓████████████▓  ████▒██  ▒████▓▓██▓▓██▓▓██████████████████▓██▒▓██▓  ▒ █▒░▓ ██▒▓░▓███▒  ██▓▓█▓   █▒██     //
//    ██▒  ▓ ███      ▓     ████  ▓   ▒▓▓███▓▒  ▓██▒  ▓▓▓██▒   ▓████████████████▓▓██▓░▓██▓▓████▓██▒▓██▓ █▓ ▓██▒██    █████░██████   █░██▓     //
//    ███  ▒▓ ███      ▓   ▓▓▒▓███████▓  ░▒     ▒███▒░▓███▓   ░▓█▒ ░██▓▓███░▒██▒ ▓██  ▓█▓ ░██▓▓▓█▒ ▓██▓ ▒█        ▒▓░▒███▒██████   █▒▓██      //
//     ███  █▓ ▒█▓    ▒██ ███▓   ▓  ▓█▓ █▓ ▓ ▒░  ▓███▓▒▒░     ░▓█▓ ▒██▒▒██▓ ▒██ ░███▓▓██▓░██▓▒▓▓▒  ▓███  █▒ ▒██▒███░  ░█  ▓████▒ ▓█▒░██       //
//      ██▓  █▓  ▓░  ▒█▓██▓███▒▒░ █▓  ▒▓▒█ █▓▒▒░  ▓███▓        ▒████████▓▓█████▓██▓▓▓▓▓████▒   ░▓▒░███▓ ▒▒▓██▒░█▓▓▓   ▒  ▒ ▓██▓▒██░ ██▒  █    //
//      ▒██▒  █▓   ████ ██▒ █▓ ░█████▓ ▒█▒▒█▒▒░░▒  ▒████▓▒       ░▒▒░▒▒░  ▒▓▒▒▓▓▓░ ░░░  ░      ▓█▒▒███▓  ▓█▒ ░░  ▓█░░█▓  █    ███  ██▓  ▓█    //
//    ▒  ▓██░  ██   ███  ██   ▒  █▒  ██ █▓ █▓ ███░   ▓█████▓▓▒░                        ▒▓▒▒░░▓██▓ ▓███▒  █ ░██▒ ██▒███  ██   ███  ██▓  ▓██    //
//    █▒  ▓██░  ██   ███ ▒██  ▓█▓▓░▒▓ █  ██░█  ▓  ▓▓   ▒██████████████████████████▓▒   ░▓█████▓░ ▒███▓  ██ █▒▒▓░▒ ▒██  ▓█   ███  ██▓  ▒██░    //
//    ██▒  ▓██░  ██▓  ██▒ ▒██  ▓██░▒█░▓█▓ ▒██░ ▒██▒▓░░    ▒▓▓████████████████████████▓         ▒████▓ ▒█▒ ░█ ▓▓  ▒██  ▓█▓  ██▒  ██▓  ▒██▓     //
//    ███▒  ▓██▒  ▓██  ▓█  ░██░  █▒░█▒▓▓▒░ ░██  ██ ░█▒▓░▒░      ░▒░░░   ░░░      ▒▓█████▓▒▒▒▓██████▓ ▒█▓▓░▒▓ ▓▓ ██▓  ▓██ ░██  ▒██▓  ▒██▓      //
//    ████▒  ▒██▓  ▒██▓ ▒█   ██▓ █▓   ░█   ██░ ▒██░ ▒▓░ ▓█  ▓█▒ █▒ ░▓▓▒▒░░    ▒     ▓███████████▓▒▒░  ███░████▒ █░  ███ ▓█▒  ▓██▒  ▓██▓       //
//    █████▓  ░███   ███▒▒▓   ▓▓ ▒██▓  ▓██▒▓██▒  ██▓▓▒▓███▓ ▓█▓   ▓█▓ ▒▒▓▓▓█▒ ▒▓█▓░  ▒▒▒▓▓▓▓▒▒░ ▒▓▒  ░▒  ░██░  ▓█▒▒███▒▓▓   ███   ███▒        //
//    ██████▓   ███░  ▓████▓ ▓██▒  ▒█████▓▒  ▓█   ▓▓▒▓▓    ░ ▓█▓ ▓██  █▓▒░ ██░ ▒█▒ ▒▓▒▒▒▒▒ ▒▒  ███░▒██▓▒ ░   ▓██▓  ▓█▒    ▒██▓   ███░         //
//     ▓██████   ▓██▓   ████░█████▓   ▒███     █▓░▒██▓  ███▒ ▓██▒  ▓█▓ ▒▒▒█▒ ░██▓  ▒█▓   ██░  ▓▓░ █████   ▓███▒     █    ███▒  ▒███      ▒    //
//      ▒██████▒  ░███░  ▓░   ▒▓▒████▒   ░▒ ▒██████   ░ ▓▓ ░▒▒█▓▒ ▒██▓▒░▒▓▓▒  ▒█▓▒ ▓▓██▒▒█▓███      ▒█▓████▓   ░▓▒▒███▓▒██▓   ███▓      ▓█    //
//       ░███████   ▓██▓▒██░   ▒█░  ▓███▓░   ▒█████ ░▒████▒░▒▓▓▓░   ░▒▓▓▒░▒▒█████▒▒▒▓▓▓   ░▓██░   ░▓███▓▒   ▒██▓░▒███▓  ▓▒  ▒███░      ███    //
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////


contract ARTDAYCARDS is ERC721Creator {
    constructor() ERC721Creator("ARTDAY CARDS", "ARTDAYCARDS") {}
}

// File: contracts/ERC721Creator.sol




// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/// @author: manifold.xyz

import "@openzeppelin/contracts/proxy/Proxy.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/utils/StorageSlot.sol";

contract ERC721Creator is Proxy {
    
    constructor(string memory name, string memory symbol) {
        assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
        StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = 0xe4E4003afE3765Aca8149a82fc064C0b125B9e5a;
        Address.functionDelegateCall(
            0xe4E4003afE3765Aca8149a82fc064C0b125B9e5a,
            abi.encodeWithSignature("initialize(string,string)", name, symbol)
        );
    }
        
    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev Returns the current implementation address.
     */
     function implementation() public view returns (address) {
        return _implementation();
    }

    function _implementation() internal override view returns (address) {
        return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
    }    

}

// File: @openzeppelin/contracts/proxy/Proxy.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (proxy/Proxy.sol)

pragma solidity ^0.8.0;

/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 *
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 *
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     *
     * This function does not return to its internal call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal virtual {
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())

            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)

            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())

            switch result
            // delegatecall returns 0 on error.
            case 0 {
                revert(0, returndatasize())
            }
            default {
                return(0, returndatasize())
            }
        }
    }

    /**
     * @dev This is a virtual function that should be overridden so it returns the address to which the fallback function
     * and {_fallback} should delegate.
     */
    function _implementation() internal view virtual returns (address);

    /**
     * @dev Delegates the current call to the address returned by `_implementation()`.
     *
     * This function does not return to its internal call site, it will return directly to the external caller.
     */
    function _fallback() internal virtual {
        _beforeFallback();
        _delegate(_implementation());
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
     * function in the contract matches the call data.
     */
    fallback() external payable virtual {
        _fallback();
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
     * is empty.
     */
    receive() external payable virtual {
        _fallback();
    }

    /**
     * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
     * call, or as part of the Solidity `fallback` or `receive` functions.
     *
     * If overridden should call `super._beforeFallback()`.
     */
    function _beforeFallback() internal virtual {}
}

// File: @openzeppelin/contracts/utils/Address.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly
                /// @solidity memory-safe-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// File: @openzeppelin/contracts/utils/StorageSlot.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/StorageSlot.sol)

pragma solidity ^0.8.0;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }
}