1 /*
2 ** $Id: lstring.h,v 1.61.1.1 2017/04/19 17:20:42 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 sizelstring(l)  (sizeof(union UTString) + ((l) + 1) * sizeof(char))
16 
17 #define sizeludata(l)	(sizeof(union UUdata) + (l))
18 #define sizeudata(u)	sizeludata((u)->len)
19 
20 #define luaS_newliteral(L, s)	(luaS_newlstr(L, "" s, \
21                                  (sizeof(s)/sizeof(char))-1))
22 
23 
24 /*
25 ** test whether a string is a reserved word
26 */
27 #define isreserved(s)	((s)->tt == LUA_TSHRSTR && (s)->extra > 0)
28 
29 
30 /*
31 ** equality for short strings, which are always internalized
32 */
33 #define eqshrstr(a,b)	check_exp((a)->tt == LUA_TSHRSTR, (a) == (b))
34 
35 
36 LUAI_FUNC unsigned int luaS_hash (const char *str, size_t l, unsigned int seed);
37 LUAI_FUNC unsigned int luaS_hashlongstr (TString *ts);
38 LUAI_FUNC int luaS_eqlngstr (TString *a, TString *b);
39 LUAI_FUNC void luaS_resize (lua_State *L, int newsize);
40 LUAI_FUNC void luaS_clearcache (global_State *g);
41 LUAI_FUNC void luaS_init (lua_State *L);
42 LUAI_FUNC void luaS_remove (lua_State *L, TString *ts);
43 LUAI_FUNC Udata *luaS_newudata (lua_State *L, size_t s);
44 LUAI_FUNC TString *luaS_newlstr (lua_State *L, const char *str, size_t l);
45 LUAI_FUNC TString *luaS_new (lua_State *L, const char *str);
46 LUAI_FUNC TString *luaS_createlngstrobj (lua_State *L, size_t l);
47 
48 
49 #endif
50