#pragma once

#if !defined(MIJIN_DETECT_HPP_INCLUDED)
#define MIJIN_DETECT_HPP_INCLUDED 1

namespace mijin
{

//
// public defines
//

#if !defined(__has_include)
    #define __has_include(x) (false)
#endif

#define MIJIN_OS_UNKNOWN 0
#define MIJIN_OS_LINUX   1
#define MIJIN_OS_WINDOWS 2
#define MIJIN_OS_OSX     3

#if !defined(MIJIN_TARGET_OS)
    #if defined(__linux__)
        #define MIJIN_TARGET_OS MIJIN_OS_LINUX
    #elif defined(_WIN32)
        #define MIJIN_TARGET_OS MIJIN_OS_WINDOWS
    #else // TODO: macos
        #define MIJIN_TARGET_OS MIJIN_OS_UNKNOWN
    #endif
#endif

#define MIJIN_COMPILER_UNKNOWN 0
#define MIJIN_COMPILER_GCC     1
#define MIJIN_COMPILER_CLANG   2
#define MIJIN_COMPILER_MSVC    3

#if !defined(MIJIN_COMPILER)
    #if defined(__clang__)
        #define MIJIN_COMPILER MIJIN_COMPILER_CLANG
    #elif defined(__GNUC__)
        #define MIJIN_COMPILER MIJIN_COMPILER_GCC
    #elif defined(_MSC_VER)
        #define MIJIN_COMPILER MIJIN_COMPILER_MSVC
    #else
        #define MIJIN_COMPILER MIJIN_COMPILER_UNKNOWN
    #endif
#endif

#define MIJIN_STDLIB_UNKNOWN 0
#define MIJIN_STDLIB_GLIBC   1

#if !defined(MIJIN_STDLIB)
    #if __has_include(<features.h>)
        #include <features.h>
    #endif
    #if defined(__GLIBC__)
        #define MIJIN_STDLIB MIJIN_STDLIB_GLIBC
    #else
        #define MIJIN_STDLIB MIJIN_STDLIB_UNKNOWN
    #endif
#endif

#if !defined(MIJIN_RTTI)
    #if MIJIN_COMPILER == MIJIN_COMPILER_GCC
        #if defined(__GXX_RTTI)
            #define MIJIN_RTTI 1
        #else
            #define MIJIN_RTTI 0
        #endif
    #elif MIJIN_COMPILER == MIJIN_COMPILER_CLANG
        #define MIJIN_RTTI (__has_feature(cxx_rtti))
    #elif MIJIN_COMPILER == MIJIN_COMPILER_MSVC
        #if defined(_CPPRTTI)
            #define MIJIN_RTTI 1
        #else
            #define MIJIN_RTTI 0
        #endif
    #else
        #define MIJIN_RTTI 0
    #endif
#endif

//
// public constants
//

//
// public types
//

//
// public functions
//

} // namespace mijin

#endif // !defined(MIJIN_DETECT_HPP_INCLUDED)