1/*
2** String handling.
3** Copyright (C) 2005-2014 Mike Pall. See Copyright Notice in luajit.h
4*/
5
6#ifndef _LJ_STR_H
7#define _LJ_STR_H
8
9#include <stdarg.h>
10
11#include "lj_obj.h"
12
13/* String interning. */
14LJ_FUNC int32_t LJ_FASTCALL lj_str_cmp(GCstr *a, GCstr *b);
15LJ_FUNC void lj_str_resize(lua_State *L, MSize newmask);
16LJ_FUNCA GCstr *lj_str_new(lua_State *L, const char *str, size_t len);
17LJ_FUNC void LJ_FASTCALL lj_str_free(global_State *g, GCstr *s);
18
19#define lj_str_newz(L, s) (lj_str_new(L, s, strlen(s)))
20#define lj_str_newlit(L, s) (lj_str_new(L, "" s, sizeof(s)-1))
21
22/* Type conversions. */
23LJ_FUNC size_t LJ_FASTCALL lj_str_bufnum(char *s, cTValue *o);
24LJ_FUNC char * LJ_FASTCALL lj_str_bufint(char *p, int32_t k);
25LJ_FUNCA GCstr * LJ_FASTCALL lj_str_fromnum(lua_State *L, const lua_Number *np);
26LJ_FUNC GCstr * LJ_FASTCALL lj_str_fromint(lua_State *L, int32_t k);
27LJ_FUNCA GCstr * LJ_FASTCALL lj_str_fromnumber(lua_State *L, cTValue *o);
28
29#define LJ_STR_INTBUF (1+10)
30#define LJ_STR_NUMBUF LUAI_MAXNUMBER2STR
31
32/* String formatting. */
33LJ_FUNC const char *lj_str_pushvf(lua_State *L, const char *fmt, va_list argp);
34LJ_FUNC const char *lj_str_pushf(lua_State *L, const char *fmt, ...)
35#if defined(__GNUC__)
36 __attribute__ ((format (printf, 2, 3)))
37#endif
38 ;
39
40/* Resizable string buffers. Struct definition in lj_obj.h. */
41LJ_FUNC char *lj_str_needbuf(lua_State *L, SBuf *sb, MSize sz);
42
43#define lj_str_initbuf(sb) ((sb)->buf = NULL, (sb)->sz = 0)
44#define lj_str_resetbuf(sb) ((sb)->n = 0)
45#define lj_str_resizebuf(L, sb, size) \
46 ((sb)->buf = (char *)lj_mem_realloc(L, (sb)->buf, (sb)->sz, (size)), \
47 (sb)->sz = (size))
48#define lj_str_freebuf(g, sb) lj_mem_free(g, (void *)(sb)->buf, (sb)->sz)
49
50#endif
51