1 /* 2 ** $Id: ltable.h $ 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 gval(n) (&(n)->i_val) 15 #define gnext(n) ((n)->u.next) 16 17 18 /* 19 ** Clear all bits of fast-access metamethods, which means that the table 20 ** may have any of these metamethods. (First access that fails after the 21 ** clearing will set the bit again.) 22 */ 23 #define invalidateTMcache(t) ((t)->flags &= ~maskflags) 24 25 26 /* true when 't' is using 'dummynode' as its hash part */ 27 #define isdummy(t) ((t)->lastfree == NULL) 28 29 30 /* allocated size for hash nodes */ 31 #define allocsizenode(t) (isdummy(t) ? 0 : sizenode(t)) 32 33 34 /* returns the Node, given the value of a table entry */ 35 #define nodefromval(v) cast(Node *, (v)) 36 37 38 LUAI_FUNC const TValue *luaH_getint (Table *t, lua_Integer key); 39 LUAI_FUNC void luaH_setint (lua_State *L, Table *t, lua_Integer key, 40 TValue *value); 41 LUAI_FUNC const TValue *luaH_getshortstr (Table *t, TString *key); 42 LUAI_FUNC const TValue *luaH_getstr (Table *t, TString *key); 43 LUAI_FUNC const TValue *luaH_get (Table *t, const TValue *key); 44 LUAI_FUNC TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key); 45 LUAI_FUNC TValue *luaH_set (lua_State *L, Table *t, const TValue *key); 46 LUAI_FUNC Table *luaH_new (lua_State *L); 47 LUAI_FUNC void luaH_resize (lua_State *L, Table *t, unsigned int nasize, 48 unsigned int nhsize); 49 LUAI_FUNC void luaH_resizearray (lua_State *L, Table *t, unsigned int nasize); 50 LUAI_FUNC void luaH_free (lua_State *L, Table *t); 51 LUAI_FUNC int luaH_next (lua_State *L, Table *t, StkId key); 52 LUAI_FUNC lua_Unsigned luaH_getn (Table *t); 53 LUAI_FUNC unsigned int luaH_realasize (const Table *t); 54 55 56 #if defined(LUA_DEBUG) 57 LUAI_FUNC Node *luaH_mainposition (const Table *t, const TValue *key); 58 LUAI_FUNC int luaH_isdummy (const Table *t); 59 #endif 60 61 62 #endif 63