Exception.hpp

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/*
 *
 * ---
 *
 *  Copyright (C) 2020 Anselm Schmidt (ans[ät]ohai.su)
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version in addition to the terms of any
 *  licences already herein identified.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program. If not, see <https://www.gnu.org/licenses/>.
 *
 * ---
 *
 * Exception.hpp
 *
 * Base class for custom exceptions.
 *
 *  Created on: Feb 5, 2019
 *      Author: ans
 */

#ifndef MAIN_EXCEPTION_HPP_
#define MAIN_EXCEPTION_HPP_

#include <stdexcept>        // std::runtime_error
#include <string>           // std::string
#include <string_view>      // std::string_view

/*
 * MACROS FOR CLASS CREATION
 */


// NOLINTNEXTLINE(cppcoreguidelines-macro-usage)
#define MAIN_EXCEPTION_CLASS()          class Exception : public Main::Exception { \
                                        public: \
                                            explicit Exception( \
                                                    const std::string& description \
                                            ) : Main::Exception(description) {} \
                                        }


// NOLINTNEXTLINE(cppcoreguidelines-macro-usage, bugprone-macro-parentheses)
#define MAIN_EXCEPTION_SUBCLASS(NAME)   class NAME : public Exception { \
                                        public: \
                                            explicit NAME( \
                                                    const std::string& description \
                                            ) : Exception(description) {} \
                                        }

namespace crawlservpp::Main {

    /*
     * DECLARATION
     */


    class Exception : public std::runtime_error {
    public:

        explicit Exception(const std::string& description);

        ~Exception() override = default;


        [[nodiscard]] std::string_view view() const noexcept;



        Exception(const Exception& other) = default;

        Exception& operator=(const Exception& other) = default;

        Exception(Exception&& other) = default;

        Exception& operator=(Exception&& other) = default;


    private:
        std::string_view stringView;
    };

    /*
     * IMPLEMENTATION
     */


    inline Exception::Exception(const std::string& description)
            : std::runtime_error(description), stringView(std::runtime_error::what()) {}


    inline std::string_view Exception::view() const noexcept {
        return this->stringView;
    }

} /* namespace crawlservpp::Main */

#endif /* MAIN_EXCEPTION_HPP_ */