config.hpp

/*
 * pcre2cpp - PCRE2 cpp wrapper
 *
 * Licensed under the BSD 3-Clause License with Attribution Requirement.
 * See the LICENSE file for details: https://github.com/MAIPA01/pcre2cpp/blob/main/LICENSE
 *
 * Copyright (c) 2025, Patryk Antosik (MAIPA01)
 *
 * PCRE2 library included in this project:
 * Copyright (c) 2016-2024, University of Cambridge.
 *
 * See the LICENSE_PCRE2 file for details: https://github.com/MAIPA01/pcre2cpp/blob/main/LICENSE_PCRE2
 */
 
#pragma once
#ifndef _PCRE2CPP_CONFIG_HPP_
    #define _PCRE2CPP_CONFIG_HPP_
 
/**
 *  @defgroup pcre2cpp PCRE2 C++
 *  @brief Main group
 */
 
/**
 * @defgroup utils Utilities
 * @brief group with utilities (not for end user to use)
 * @ingroup pcre2cpp
 */
 
/**
 * @namespace pcre2cpp
 * @brief Main namespace of pcre2cpp library
 */
 
/**
 * @namespace pcre2cpp::uitls
 * @brief Utility namespace of pcre2cpp library
 */
 
    #pragma region VERSION
    /**
     * @brief pcre2cpp version major number
     * @ingroup pcre2cpp
     */
    #define PCRE2CPP_VERSION_MAJOR 1
    /**
     * @brief pcre2cpp version minor number
     * @ingroup pcre2cpp
     */
    #define PCRE2CPP_VERSION_MINOR 3
    /**
     * @brief pcre2cpp version patch number
     * @ingroup pcre2cpp
     */
    #define PCRE2CPP_VERSION_PATCH 0
 
    /**
     * @brief stringify helper
     * @ingroup utils
     */
    #define _PCRE2CPP_STRINGIFY_HELPER(x) #x
 
    /**
     * @brief converts version numbers to string
     * @ingroup utils
     */
    #define _PCRE2CPP_VERSION_TO_STRING(major, minor, patch)
        _PCRE2CPP_STRINGIFY_HELPER(major) "." _PCRE2CPP_STRINGIFY_HELPER(minor) "." _PCRE2CPP_STRINGIFY_HELPER(patch)
    /**
     * @brief converts version number to int
     * @ingroup utils
     */
    #define _PCRE2CPP_VERSION_TO_INT(major, minor, patch) (major * 100 + minor * 10 + patch)
 
    /**
     * @brief pcre2cpp version string
     * @ingroup pcre2cpp
     */
    #define PCRE2CPP_VERSION_STRING
        _PCRE2CPP_VERSION_TO_STRING(PCRE2CPP_VERSION_MAJOR, PCRE2CPP_VERSION_MINOR, PCRE2CPP_VERSION_PATCH)
    /**
     * @brief pcre2cpp version int
     * @ingroup pcre2cpp
     */
    #define PCRE2CPP_VERSION_INT _PCRE2CPP_VERSION_TO_INT(PCRE2CPP_VERSION_MAJOR, PCRE2CPP_VERSION_MINOR, PCRE2CPP_VERSION_PATCH)
    /**
     * @brief pcre2cpp version string
     * @ingroup pcre2cpp
     */
    #define PCRE2CPP_VERSION PCRE2CPP_VERSION_STRING
    #pragma endregion
 
    #pragma region LAST_UPDATE
    /**
     * @brief pcre2cpp last update day
     * @ingroup pcre2cpp
     */
    #define PCRE2CPP_LAST_UPDATE_DAY 19
    /**
     * @brief pcre2cpp last update month
     * @ingroup pcre2cpp
     */
    #define PCRE2CPP_LAST_UPDATE_MONTH 05
    /**
     * @brief pcre2cpp last update year
     * @ingroup pcre2cpp
     */
    #define PCRE2CPP_LAST_UPDATE_YEAR 2026
 
    /**
     * @brief converts last update date to string
     * @ingroup utils
     */
    #define _PCRE2CPP_LAST_UPDATE_DATE_HELPER(day, month, year)
        _PCRE2CPP_STRINGIFY_HELPER(day) "." _PCRE2CPP_STRINGIFY_HELPER(month) "." _PCRE2CPP_STRINGIFY_HELPER(year)
 
    /**
     * @brief pcre2cpp last update date string
     * @ingroup pcre2cpp
     */
    #define PCRE2CPP_LAST_UPDATE_DATE
        _PCRE2CPP_LAST_UPDATE_DATE_HELPER(PCRE2CPP_LAST_UPDATE_DAY, PCRE2CPP_LAST_UPDATE_MONTH, PCRE2CPP_LAST_UPDATE_YEAR)
    #pragma endregion
 
    #pragma region CXX_VERSIONS
/**
 * @def _PCRE2CPP_HAS_CXX17
 * @brief check if compiler has c++ version greater or equal to c++17
 * @ingroup utils
 */
    #ifndef _HAS_CXX17
    // clang-format off
        #define _PCRE2CPP_HAS_CXX17 __cplusplus >= 201703l
    // clang-format on
    #else
        #define _PCRE2CPP_HAS_CXX17 _HAS_CXX17
    #endif
 
    /**
     * @def _PCRE2CPP_HAS_CXX20
     * @brief check if compiler has c++ version greater or equal to c++20 and if user enabled c++20 features using PCRE2CPP_ENABLE_CXX20
     * @ingroup utils
     */
    #ifndef PCRE2CPP_ENABLE_CXX20
        #define _PCRE2CPP_HAS_CXX20 0
    #elif !defined(_HAS_CXX20)
    // clang-format off
        #define _PCRE2CPP_HAS_CXX20 __cplusplus >= 202002l
    // clang-format on
    #else
        #define _PCRE2CPP_HAS_CXX20 _HAS_CXX20
    #endif
    #pragma endregion
 
/**
 * @def _PCRE2CPP_HAS_EXCEPTIONS
 * @brief check if exceptions are enabled
 * @ingroup utils
 */
 
/**
 * @def _PCRE2CPP_HAS_ASSERTS
 * @brief check if asserts are enabled
 * @ingroup utils
 */
 
    #ifdef PCRE2CPP_CHANGE_ASSERTS_TO_EXCEPTIONS
        #define _PCRE2CPP_HAS_EXCEPTIONS _PCRE2CPP_HAS_CXX17
        #define _PCRE2CPP_HAS_ASSERTS    0
    #else
        #define _PCRE2CPP_HAS_EXCEPTIONS 0
        #define _PCRE2CPP_HAS_ASSERTS    _PCRE2CPP_HAS_CXX17
    #endif
 
    #if _PCRE2CPP_HAS_EXCEPTIONS
        #define _PCRE2CPP_NOEXCEPT
    #else
        #define _PCRE2CPP_NOEXCEPT noexcept
    #endif
 
    #pragma region UTFS_ENABLED
/**
 * @def _PCRE2CPP_HAS_UTF8
 * @brief check if support for UTF-8 is enabled
 * @ingroup utils
 */
 
/**
 * @def _PCRE2CPP_HAS_UTF16
 * @brief check if support for UTF-16 is enabled
 * @ingroup utils
 */
 
/**
 * @def _PCRE2CPP_HAS_UTF32
 * @brief check if support for UTF-32 is enabled
 * @ingroup utils
 */
 
    #ifdef PCRE2CPP_DISABLE_UTF8
        #define _PCRE2CPP_HAS_UTF8 0
    #else
        #define _PCRE2CPP_HAS_UTF8 1
    #endif
 
    #ifdef PCRE2CPP_DISABLE_UTF16
        #define _PCRE2CPP_HAS_UTF16 0
    #else
        #define _PCRE2CPP_HAS_UTF16 1
    #endif
 
    #ifdef PCRE2CPP_DISABLE_UTF32
        #define _PCRE2CPP_HAS_UTF32 0
    #else
        #define _PCRE2CPP_HAS_UTF32 1
    #endif
 
    #if _PCRE2CPP_HAS_UTF8 && !_PCRE2CPP_HAS_UTF16 && !_PCRE2CPP_HAS_UTF32
        #define PCRE2_CODE_UNIT_WIDTH 8
    #elif !_PCRE2CPP_HAS_UTF8 && _PCRE2CPP_HAS_UTF16 && !_PCRE2CPP_HAS_UTF32
        #define PCRE2_CODE_UNIT_WIDTH 16
    #elif !_PCRE2CPP_HAS_UTF8 && !_PCRE2CPP_HAS_UTF16 && _PCRE2CPP_HAS_UTF32
        #define PCRE2_CODE_UNIT_WIDTH 32
    #else
        #define PCRE2_CODE_UNIT_WIDTH 0
    #endif
    #pragma endregion
 
    #pragma region VERSION_SPECIFIC_VALUES
/**
 * @def _PCRE2CPP_CONSTEXPR17
 * @brief constexpr for c++17 and higher
 * @ingroup utils
 */
    #if _PCRE2CPP_HAS_CXX17
        #define _PCRE2CPP_CONSTEXPR17 constexpr
    #else
        #define _PCRE2CPP_CONSTEXPR17
    #endif
 
/**
 * @def _PCRE2CPP_CONSTEXPR20
 * @brief constexpr keyword for c++20 and higher
 * @ingroup utils
 */
 
/**
 * @def _PCRE2CPP_REQUIRES(condition)
 * @brief requires keyword for c++20 and higher
 * @ingroup utils
 */
    #if _PCRE2CPP_HAS_CXX20
        #define _PCRE2CPP_CONSTEXPR20         constexpr
        #define _PCRE2CPP_REQUIRES(condition) requires (condition)
    #else
        #define _PCRE2CPP_CONSTEXPR20
        #define _PCRE2CPP_REQUIRES(condition)
    #endif
    #pragma endregion
 
/**
 * @def _PCRE2CPP_PCRE2_FUNC_CONSTEXPR17
 * @brief adds constexpr to pcre2 function pointers only if pcre2 is static library
 * @ingroup utils
 */
 
    #ifdef PCRE2CPP_SHARED_LIBS
        #define _PCRE2CPP_PCRE2_FUNC_CONSTEXPR17 inline const
    #else
        #define _PCRE2CPP_PCRE2_FUNC_CONSTEXPR17 constexpr
    #endif
 
    #include <mstd/mstd.hpp>
 
    /**
     * @brief compiler message
     * @ingroup utils
     */
    #define _PCRE2CPP_MESSAGE(MESSAGE) _MSTD_MESSAGE(MESSAGE)
    /**
     * @brief compiler warning
     * @ingroup utils
     */
    #define _PCRE2CPP_WARNING(MESSAGE) _MSTD_WARNING(MESSAGE)
    /**
     * @brief compiler error
     * @ingroup utils
     */
    #define _PCRE2CPP_ERROR(MESSAGE) _MSTD_ERROR(MESSAGE)
#endif