/*
File:   string.h
Author: Taylor Robbins
Date:   08\28\2025
*/

#ifndef _STRING_H
#define _STRING_H

#include <stdint.h>

#define WASM_STD_USE_BUILTIN_MEMSET  1
#define WASM_STD_USE_BUILTIN_MEMCPY  1
#define WASM_STD_USE_BUILTIN_MEMMOVE 1

MAYBE_START_EXTERN_C

#if WASM_STD_USE_BUILTIN_MEMSET
// Basically converts to memory.fill instruction
#define memset(pntr, value, numBytes) __builtin_memset((pntr), (value), (numBytes));
#else
void* _memset(void* pntr, int value, size_t numBytes);
#define memset(pntr, value, numBytes) _memset((pntr), (value), (numBytes))
#endif

#if WASM_STD_USE_BUILTIN_MEMCPY
// Basically converts to memory.copy instruction
#define memcpy(dest, source, numBytes) __builtin_memcpy((dest), (source), (numBytes));
#else
void* _memcpy(void* dest, const void* source, size_t numBytes);
#define memcpy(dest, source, numBytes) _memcpy((dest), (source), (numBytes))
#endif

#if WASM_STD_USE_BUILTIN_MEMMOVE
// Basically converts to memory.copy instruction
#define memmove(dest, source, numBytes) __builtin_memmove((dest), (source), (numBytes));
#else
void* _memmove(void* dest, const void* source, size_t numBytes);
#define memmove(dest, source, numBytes) _memmove((dest), (source), (numBytes))
#endif

int memcmp(const void* left, const void* right, size_t numBytes);
char* strcpy(char* dest, const char* source);
// TODO: char* strstr(const char* haystack, const char* needle);

int strcmp(const char* left, const char* right);
int strncmp(const char* left, const char* right, size_t numBytes);
size_t strlen(const char* str);
// TODO: size_t wcslen(const wchar_t* str);

//TODO: char *strchr (const char *, int); //NEEDED for slre.c
//TODO: char *strrchr (const char *, int); //NEEDED for slre.c

MAYBE_END_EXTERN_C

#endif //  _STRING_H