/lua/lstring.h

 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
37LUAI_FUNC unsigned int luaS_hash (const char *str, size_t l, unsigned int seed);
38LUAI_FUNC int luaS_eqlngstr (TString *a, TString *b);
39LUAI_FUNC int luaS_eqstr (TString *a, TString *b);
40LUAI_FUNC void luaS_resize (lua_State *L, int newsize);
41LUAI_FUNC Udata *luaS_newudata (lua_State *L, size_t s, Table *e);
42LUAI_FUNC TString *luaS_newlstr (lua_State *L, const char *str, size_t l);
43LUAI_FUNC TString *luaS_new (lua_State *L, const char *str);
44
45
46#endif