include/exceptionbase.hpp - main - Ant010ff/ffpp

include/exceptionbase.hpp
91 строка2 KB
Ant010ff
Version 2.11.3.
08 авг 2026, 16:44
08 авг 2026, 16:44fd187d3
/*
This header is part of a Functional Flow Processing Primitives (FFPP) library, version 2.11.3.

Official repository: https://gitlab.com/ant010ff/ffpp

Licensed under the MIT License <http://opensource.org/licenses/MIT>.
SPDX-License-Identifier: MIT
Copyright (c) 2021 - 2026 Anton Nasonov <ant010fff @ gmail . com>.
*/

#ifndef FFPP_EXCEPTION_BASE_HPP
#define FFPP_EXCEPTION_BASE_HPP

namespace FFPP {

    //Required for exception message formatting and debugging support.
	using StringT = std::string;
	using StringViewT = std::string_view;
	using CharT = StringT::value_type;

}//FFPP

namespace FFPP::Base {

    struct Exception {
        Exception() noexcept { }
        Exception(StringViewT) noexcept { }
        
        virtual ~Exception() = default;
        
        virtual StringViewT View() const noexcept = 0;
    };

}//FFPP::Base

namespace FFPP::Concepts {

    template<typename TException>
    concept Exception = std::derived_from<TException, std::exception> || std::derived_from<TException, FFPP::Base::Exception>;

}//FFPP

namespace FFPP::Base {

    template<Concepts::Exception TBase = std::exception>
    struct ExceptionAdaptor 
    : public Exception
    , public TBase 
    { 
        virtual ~ExceptionAdaptor() = default;

        ExceptionAdaptor() noexcept 
        : TBase("") //assumed that there will be no internal memory allocation
        { }
        
        ExceptionAdaptor(StringViewT) noexcept
        : TBase("")
        { }

        virtual StringViewT View() const noexcept override { return { }; }
    };

    template<>
    struct ExceptionAdaptor<std::exception> 
    : public Exception
    , public std::exception 
    { 
        virtual ~ExceptionAdaptor() = default;

        ExceptionAdaptor() noexcept { }        
        ExceptionAdaptor(StringViewT) noexcept { }

        virtual StringViewT View() const noexcept override { return { }; }
    };

    template<>
    struct ExceptionAdaptor<Exception> 
    : public Exception
    , public std::exception 
    { 
        virtual ~ExceptionAdaptor() = default;

        ExceptionAdaptor() noexcept { }        
        ExceptionAdaptor(StringViewT) noexcept { }

        virtual StringViewT View() const noexcept override { return { }; }
    };

}//FFPP::Base

#endif//FFPP_EXCEPTION_BASE_HPP