src/lj_str.h

   1 /*
   2 ** String handling.
   3 ** Copyright (C) 2005-2012 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. */
  14 LJ_FUNC int32_t LJ_FASTCALL lj_str_cmp(GCstr *a, GCstr *b);
  15 LJ_FUNC void lj_str_resize(lua_State *L, MSize newmask);
  16 LJ_FUNCA GCstr *lj_str_new(lua_State *L, const char *str, size_t len);
  17 LJ_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. */
  23 LJ_FUNC size_t LJ_FASTCALL lj_str_bufnum(char *s, cTValue *o);
  24 LJ_FUNC char * LJ_FASTCALL lj_str_bufint(char *p, int32_t k);
  25 LJ_FUNCA GCstr * LJ_FASTCALL lj_str_fromnum(lua_State *L, const lua_Number *np);
  26 LJ_FUNC GCstr * LJ_FASTCALL lj_str_fromint(lua_State *L, int32_t k);
  27 LJ_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. */
  33 LJ_FUNC const char *lj_str_pushvf(lua_State *L, const char *fmt, va_list argp);
  34 LJ_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. */
  41 LJ_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