1 /*
2 ** $Id: lstring.h,v 1.49.1.1 2013/04/12 18:48:47 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
47