#ifndef __SMCC_RT_API_DEF_H__
#define __SMCC_RT_API_DEF_H__

#include "rt_type.h"

#ifndef __RT_SIZE_TYPE__
#define __RT_SIZE_TYPE__
typedef usz_t rt_size_t;
#endif
typedef void*   (*rt_malloc)(rt_size_t size);
typedef void    (*rt_free)(void* ptr);
typedef void    (*rt_exit)(int code);

#ifndef __RT_FILE_TYPE__
#define __RT_FILE_TYPE__
typedef void* rt_file_t;
#endif
extern rt_file_t rt_stdin;
extern rt_file_t rt_stdout;
extern rt_file_t rt_stderr;
typedef rt_file_t   (*rt_fopen_t)(const char* file_name, const char* mode);
typedef int     (*rt_fflush_t)(rt_file_t*file);
typedef int     (*rt_fclose_t)(rt_file_t file);
typedef int     (*rt_freads_t)(void * dst_buf, rt_size_t dst_size, rt_size_t elem_size, rt_size_t count, rt_file_t file);
typedef int     (*rt_fwrite_t)(const void * buf, rt_size_t size, rt_size_t count, rt_file_t file);

typedef int     (*rt_fprintf_t)(void * file, const char *format, ...);
typedef int     (*rt_snprintf_t)(char * stream, rt_size_t n, const char * format, ...);
typedef void*   (*rt_realloc_t)(void *memory, rt_size_t new_size);

typedef struct smcc_rt {
    rt_malloc   _malloc;
    rt_free     _free;
    rt_exit     exit;
    
    rt_fopen_t    fopen;
    rt_fflush_t   fflush;
    rt_fclose_t   fclose;
    rt_freads_t   freads;
    rt_fwrite_t   fwrite;
    
    // Optional useful runtime
    rt_fprintf_t  fprintf;
    rt_snprintf_t snprintf;
    rt_realloc_t  _realloc;
} smcc_rt_t;

extern const smcc_rt_t rt;

// #ifndef NULL
// #ifdef __cplusplus
// #ifndef _WIN64
// #define NULL 0
// #else
// #define NULL 0LL
// #endif  /* W64 */
// #else
// #define NULL ((void *)0)
// #endif
// #endif

#define NULL ((void *)0)

#endif