ba8b5c17 |
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 |