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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
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