1 /*
2 ** $Id: ltable.h,v 2.16.1.2 2013/08/30 15:49:41 roberto Exp $
3 ** Lua tables (hash)
4 ** See Copyright Notice in lua.h
5 */
6 
7 #ifndef ltable_h
8 #define ltable_h
9 
10 #include "lobject.h"
11 
12 
13 #define gnode(t,i)	(&(t)->node[i])
14 #define gkey(n)		(&(n)->i_key.tvk)
15 #define gval(n)		(&(n)->i_val)
16 #define gnext(n)	((n)->i_key.nk.next)
17 
18 #define invalidateTMcache(t)	((t)->flags = 0)
19 
20 /* returns the key, given the value of a table entry */
21 #define keyfromval(v) \
22   (gkey(cast(Node *, cast(char *, (v)) - offsetof(Node, i_val))))
23 
24 
25 LUAI_FUNC const TValue *luaH_getint (Table *t, int key);
26 LUAI_FUNC void luaH_setint (lua_State *L, Table *t, int key, TValue *value);
27 LUAI_FUNC const TValue *luaH_getstr (Table *t, TString *key);
28 LUAI_FUNC const TValue *luaH_get (Table *t, const TValue *key);
29 LUAI_FUNC TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key);
30 LUAI_FUNC TValue *luaH_set (lua_State *L, Table *t, const TValue *key);
31 LUAI_FUNC Table *luaH_new (lua_State *L);
32 LUAI_FUNC void luaH_resize (lua_State *L, Table *t, int nasize, int nhsize);
33 LUAI_FUNC void luaH_resizearray (lua_State *L, Table *t, int nasize);
34 LUAI_FUNC void luaH_free (lua_State *L, Table *t);
35 LUAI_FUNC int luaH_next (lua_State *L, Table *t, StkId key);
36 LUAI_FUNC int luaH_getn (Table *t);
37 
38 
39 #if defined(LUA_DEBUG)
40 LUAI_FUNC Node *luaH_mainposition (const Table *t, const TValue *key);
41 LUAI_FUNC int luaH_isdummy (Node *n);
42 #endif
43 
44 
45 #endif
46