liblua/lstring.h

   1 /*
   2 ** $Id: lstring.h,v 1.49 2012/02/01 21:57:15 roberto Exp $
   3 ** String table (keep all strings handled by Lua)
   4 ** See Copyright Notice in lua.h
   5 */
   6
   7 #ifndef lstring_h
   8 #define lstring_h
   9
  10 #include "lgc.h"
  11 #include "lobject.h"
  12 #include "lstate.h"
  13
  14
  15 #define sizestring(s)   (sizeof(union TString)+((s)->len+1)*sizeof(char))
  16
  17 #define sizeudata(u)    (sizeof(union Udata)+(u)->len)
  18
  19 #define luaS_newliteral(L, s)   (luaS_newlstr(L, "" s, \
  20                                  (sizeof(s)/sizeof(char))-1))
  21
  22 #define luaS_fix(s)     l_setbit((s)->tsv.marked, FIXEDBIT)
  23
  24
  25 /*
  26 ** test whether a string is a reserved word
  27 */
  28 #define isreserved(s)   ((s)->tsv.tt == LUA_TSHRSTR && (s)->tsv.extra > 0)
  29
  30
  31 /*
  32 ** equality for short strings, which are always internalized
  33 */
  34 #define eqshrstr(a,b)   check_exp((a)->tsv.tt == LUA_TSHRSTR, (a) == (b))
  35
  36
  37 LUAI_FUNC unsigned int luaS_hash (const char *str, size_t l, unsigned int seed);
  38 LUAI_FUNC int luaS_eqlngstr (TString *a, TString *b);
  39 LUAI_FUNC int luaS_eqstr (TString *a, TString *b);
  40 LUAI_FUNC void luaS_resize (lua_State *L, int newsize);
  41 LUAI_FUNC Udata *luaS_newudata (lua_State *L, size_t s, Table *e);
  42 LUAI_FUNC TString *luaS_newlstr (lua_State *L, const char *str, size_t l);
  43 LUAI_FUNC TString *luaS_new (lua_State *L, const char *str);
  44
  45
  46 #endif