/* SPDX-License-Identifier: BSL-1.0 OR BSD-3-Clause */

#ifndef MPT_BASE_DETECT_COMPILER_HPP
#define MPT_BASE_DETECT_COMPILER_HPP



#define MPT_COMPILER_MAKE_VERSION2(version, sp)         ((version)*100 + (sp))
#define MPT_COMPILER_MAKE_VERSION3(major, minor, patch) ((major)*10000 + (minor)*100 + (patch))



#if defined(MPT_COMPILER_GENERIC)

#undef MPT_COMPILER_GENERIC
#define MPT_COMPILER_GENERIC 1

#elif defined(__clang__) && defined(_MSC_VER) && defined(__c2__)

#error "Clang/C2 is not supported. Please use Clang/LLVM for Windows instead."

#elif defined(__clang__)

#define MPT_COMPILER_CLANG                      1
#define MPT_COMPILER_CLANG_VERSION              MPT_COMPILER_MAKE_VERSION3(__clang_major__, __clang_minor__, __clang_patchlevel__)
#define MPT_CLANG_AT_LEAST(major, minor, patch) (MPT_COMPILER_CLANG_VERSION >= MPT_COMPILER_MAKE_VERSION3((major), (minor), (patch)))
#define MPT_CLANG_BEFORE(major, minor, patch)   (MPT_COMPILER_CLANG_VERSION < MPT_COMPILER_MAKE_VERSION3((major), (minor), (patch)))

#if MPT_CLANG_BEFORE(7, 0, 0)
#error "clang version 7 required"
#endif

#if defined(__clang_analyzer__)
#ifndef MPT_BUILD_ANALYZED
#define MPT_BUILD_ANALYZED
#endif
#endif

#elif defined(__GNUC__)

#define MPT_COMPILER_GCC                      1
#define MPT_COMPILER_GCC_VERSION              MPT_COMPILER_MAKE_VERSION3(__GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__)
#define MPT_GCC_AT_LEAST(major, minor, patch) (MPT_COMPILER_GCC_VERSION >= MPT_COMPILER_MAKE_VERSION3((major), (minor), (patch)))
#define MPT_GCC_BEFORE(major, minor, patch)   (MPT_COMPILER_GCC_VERSION < MPT_COMPILER_MAKE_VERSION3((major), (minor), (patch)))

#if MPT_GCC_BEFORE(8, 1, 0)
#error "GCC version 8.1 required"
#endif

#elif defined(_MSC_VER)

#define MPT_COMPILER_MSVC 1
#if (_MSC_VER >= 1942)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2022, 12)
#elif (_MSC_VER >= 1941)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2022, 11)
#elif (_MSC_VER >= 1940)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2022, 10)
#elif (_MSC_VER >= 1939)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2022, 9)
#elif (_MSC_VER >= 1938)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2022, 8)
#elif (_MSC_VER >= 1937)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2022, 7)
#elif (_MSC_VER >= 1936)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2022, 6)
#elif (_MSC_VER >= 1935)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2022, 5)
#elif (_MSC_VER >= 1934)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2022, 4)
#elif (_MSC_VER >= 1933)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2022, 3)
#elif (_MSC_VER >= 1932)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2022, 2)
#elif (_MSC_VER >= 1931)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2022, 1)
#elif (_MSC_VER >= 1930)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2022, 0)
#elif (_MSC_VER >= 1929)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2019, 10)
#elif (_MSC_VER >= 1928)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2019, 8)
#elif (_MSC_VER >= 1927)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2019, 7)
#elif (_MSC_VER >= 1926)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2019, 6)
#elif (_MSC_VER >= 1925)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2019, 5)
#elif (_MSC_VER >= 1924)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2019, 4)
#elif (_MSC_VER >= 1923)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2019, 3)
#elif (_MSC_VER >= 1922)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2019, 2)
#elif (_MSC_VER >= 1921)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2019, 1)
#elif (_MSC_VER >= 1920)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2019, 0)
#elif (_MSC_VER >= 1916)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2017, 9)
#elif (_MSC_VER >= 1915)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2017, 8)
#elif (_MSC_VER >= 1914)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2017, 7)
#elif (_MSC_VER >= 1913)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2017, 6)
#elif (_MSC_VER >= 1912)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2017, 5)
#elif (_MSC_VER >= 1911)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2017, 3)
#elif (_MSC_VER >= 1910)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2017, 0)
#elif (_MSC_VER >= 1900) && defined(_MSVC_LANG)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2015, 3)
#elif (_MSC_VER >= 1900)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2015, 0)
#elif (_MSC_VER >= 1800)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2013, 0)
#elif (_MSC_VER >= 1700)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2012, 0)
#elif (_MSC_VER >= 1600)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2010, 0)
#elif (_MSC_VER >= 1500)
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2008, 0)
#else
#define MPT_COMPILER_MSVC_VERSION MPT_COMPILER_MAKE_VERSION2(2005, 0)
#endif
#define MPT_MSVC_AT_LEAST(version, sp) (MPT_COMPILER_MSVC_VERSION >= MPT_COMPILER_MAKE_VERSION2((version), (sp)))
#define MPT_MSVC_BEFORE(version, sp)   (MPT_COMPILER_MSVC_VERSION < MPT_COMPILER_MAKE_VERSION2((version), (sp)))

#if MPT_MSVC_BEFORE(2017, 9)
#error "MSVC version 2017 15.9 required"
#endif

#if defined(_PREFAST_)
#ifndef MPT_BUILD_ANALYZED
#define MPT_BUILD_ANALYZED
#endif
#endif

#else

#define MPT_COMPILER_GENERIC 1

#endif



#ifndef MPT_COMPILER_GENERIC
#define MPT_COMPILER_GENERIC 0
#endif
#ifndef MPT_COMPILER_CLANG
#define MPT_COMPILER_CLANG                      0
#define MPT_CLANG_AT_LEAST(major, minor, patch) 0
#define MPT_CLANG_BEFORE(major, minor, patch)   0
#endif
#ifndef MPT_COMPILER_GCC
#define MPT_COMPILER_GCC                      0
#define MPT_GCC_AT_LEAST(major, minor, patch) 0
#define MPT_GCC_BEFORE(major, minor, patch)   0
#endif
#ifndef MPT_COMPILER_MSVC
#define MPT_COMPILER_MSVC              0
#define MPT_MSVC_AT_LEAST(version, sp) 0
#define MPT_MSVC_BEFORE(version, sp)   0
#endif



#if MPT_COMPILER_GENERIC || MPT_COMPILER_GCC || MPT_COMPILER_CLANG

#if (__cplusplus >= 202002)
// Support for C++20 is lacking across all compilers.
// Only assume C++17 for non-MSVC, even when in C++20 mode.
#define MPT_CXX 17
#elif (__cplusplus >= 201703)
#define MPT_CXX 17
#else
#define MPT_CXX 17
#endif

#elif MPT_COMPILER_MSVC

#if MPT_MSVC_AT_LEAST(2019, 10) && (_MSVC_LANG >= 201705)
#define MPT_CXX 20
#elif (_MSVC_LANG >= 201703)
#define MPT_CXX 17
#else
#define MPT_CXX 17
#endif

#else

#define MPT_CXX 17

#endif

// MPT_CXX is stricter than just using __cplusplus directly.
// We will only claim a language version as supported IFF all core language and
// library fatures that we need are actually supported AND working correctly
// (to our needs).

#define MPT_CXX_AT_LEAST(version) (MPT_CXX >= (version))
#define MPT_CXX_BEFORE(version)   (MPT_CXX < (version))



#endif // MPT_BASE_DETECT_COMPILER_HPP
