1 /* 2 ** $Id: ltable.h,v 1.3 2015/02/02 14:03:05 lneto 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 gval(n) (&(n)->i_val) 15 #define gnext(n) ((n)->i_key.nk.next) 16 17 18 /* 'const' to avoid wrong writings that can mess up field 'next' */ 19 #define gkey(n) cast(const TValue*, (&(n)->i_key.tvk)) 20 21 #define wgkey(n) (&(n)->i_key.nk) 22 23 #define invalidateTMcache(t) ((t)->flags = 0) 24 25 26 /* returns the key, given the value of a table entry */ 27 #define keyfromval(v) \ 28 (gkey(cast(Node *, cast(char *, (v)) - offsetof(Node, i_val)))) 29 30 31 LUAI_FUNC const TValue *luaH_getint (Table *t, lua_Integer key); 32 LUAI_FUNC void luaH_setint (lua_State *L, Table *t, lua_Integer key, 33 TValue *value); 34 LUAI_FUNC const TValue *luaH_getstr (Table *t, TString *key); 35 LUAI_FUNC const TValue *luaH_get (Table *t, const TValue *key); 36 LUAI_FUNC TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key); 37 LUAI_FUNC TValue *luaH_set (lua_State *L, Table *t, const TValue *key); 38 LUAI_FUNC Table *luaH_new (lua_State *L); 39 LUAI_FUNC void luaH_resize (lua_State *L, Table *t, unsigned int nasize, 40 unsigned int nhsize); 41 LUAI_FUNC void luaH_resizearray (lua_State *L, Table *t, unsigned int nasize); 42 LUAI_FUNC void luaH_free (lua_State *L, Table *t); 43 LUAI_FUNC int luaH_next (lua_State *L, Table *t, StkId key); 44 LUAI_FUNC int luaH_getn (Table *t); 45 46 47 #if defined(LUA_DEBUG) 48 LUAI_FUNC Node *luaH_mainposition (const Table *t, const TValue *key); 49 LUAI_FUNC int luaH_isdummy (Node *n); 50 #endif 51 52 53 #endif 54