1 /*
2 ** $Id: lstring.h $
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 /*
16 ** Memory-allocation error message must be preallocated (it cannot
17 ** be created after memory is exhausted)
18 */
19 #define MEMERRMSG       "not enough memory"
20 
21 
22 /*
23 ** Size of a TString: Size of the header plus space for the string
24 ** itself (including final '\0').
25 */
26 #define sizelstring(l)  (offsetof(TString, contents) + ((l) + 1) * sizeof(char))
27 
28 #define luaS_newliteral(L, s)	(luaS_newlstr(L, "" s, \
29                                  (sizeof(s)/sizeof(char))-1))
30 
31 
32 /*
33 ** test whether a string is a reserved word
34 */
35 #define isreserved(s)	((s)->tt == LUA_VSHRSTR && (s)->extra > 0)
36 
37 
38 /*
39 ** equality for short strings, which are always internalized
40 */
41 #define eqshrstr(a,b)	check_exp((a)->tt == LUA_VSHRSTR, (a) == (b))
42 
43 
44 LUAI_FUNC unsigned int luaS_hash (const char *str, size_t l, unsigned int seed);
45 LUAI_FUNC unsigned int luaS_hashlongstr (TString *ts);
46 LUAI_FUNC int luaS_eqlngstr (TString *a, TString *b);
47 LUAI_FUNC void luaS_resize (lua_State *L, int newsize);
48 LUAI_FUNC void luaS_clearcache (global_State *g);
49 LUAI_FUNC void luaS_init (lua_State *L);
50 LUAI_FUNC void luaS_remove (lua_State *L, TString *ts);
51 LUAI_FUNC Udata *luaS_newudata (lua_State *L, size_t s, int nuvalue);
52 LUAI_FUNC TString *luaS_newlstr (lua_State *L, const char *str, size_t l);
53 LUAI_FUNC TString *luaS_new (lua_State *L, const char *str);
54 LUAI_FUNC TString *luaS_createlngstrobj (lua_State *L, size_t l);
55 
56 
57 #endif
58