os-k/kaleid/include/common/kalassrt.h

//----------------------------------------------------------------------------//
//                           GNU GPL OS/K                                     //
//                                                                            //
//  Authors:    spectral`                                                     //
//              NeoX                                                          //
//                                                                            //
//  Desc:       Kaleid assert() support                                       //
//----------------------------------------------------------------------------//

#ifndef _KALASSRT_H
#define _KALASSRT_H

//------------------------------------------//
//                 Macros                   //
//------------------------------------------//

#ifndef noreturn
#define noreturn __attribute__((__noreturn__))
#endif

#ifndef unlikely
#define unlikely(x) (__builtin_expect((x), 0))
#endif

#ifndef static_assert
#define static_assert _Static_assert
#endif

//------------------------------------------//
//          API compatibility checks        //
//------------------------------------------//

#define _SA_MSG "Incompatible type sizes"
static_assert(sizeof(char)   == 1, _SA_MSG);
static_assert(sizeof(short)  == 2, _SA_MSG);
static_assert(sizeof(int)    == 4, _SA_MSG);
static_assert(sizeof(long)   == 8, _SA_MSG);
static_assert(sizeof(void *) == 8, _SA_MSG);
#undef _SA_MSG

//------------------------------------------//
//              When debugging              //
//------------------------------------------//

#if !defined(_NO_DEBUG) && !defined(NDEBUG) && !defined(assert)

#ifdef _OSK_SOURCE

//
// Failed assert handler
//
noreturn void _assert_handler(const char *, const char *, int, const char *);

//
// Checks whether (x) holds, if not call _assert_handler
//
#define assert(x)               \
    do {                        \
        if unlikely (!(x))      \
            _assert_handler(#x, __FILE__, __LINE__, __func__);    \
    } while (0);

#else

//
// When not building for OS/K, use the system's assert
//
#include <assert.h>

#endif

//------------------------------------------//
//           When not debugging             //
//------------------------------------------//

#else

#ifndef NDEBUG
#define NDEBUG 1
#endif

#ifndef _NO_DEBUG
#define _NO_DEBUG 1
#endif

#ifndef assert
#define assert(x) ((void)0)
#endif

#endif

//------------------------------------------//
//           Aliases for assert()           //
//------------------------------------------//

#ifndef Assert
#define Assert assert
#endif

#ifndef KalAssert
#define KalAssert assert
#endif

//------------------------------------------//
//              End of header               //
//------------------------------------------//

#endif