1 /* $NetBSD: ltable.h,v 1.4 2016/01/28 14:41:39 lneto Exp $ */ 2 3 /* 4 ** Id: ltable.h,v 2.21 2015/11/03 15:47:30 roberto Exp 5 ** Lua tables (hash) 6 ** See Copyright Notice in lua.h 7 */ 8 9 #ifndef ltable_h 10 #define ltable_h 11 12 #include "lobject.h" 13 14 15 #define gnode(t,i) (&(t)->node[i]) 16 #define gval(n) (&(n)->i_val) 17 #define gnext(n) ((n)->i_key.nk.next) 18 19 20 /* 'const' to avoid wrong writings that can mess up field 'next' */ 21 #define gkey(n) cast(const TValue*, (&(n)->i_key.tvk)) 22 23 /* 24 ** writable version of 'gkey'; allows updates to individual fields, 25 ** but not to the whole (which has incompatible type) 26 */ 27 #define wgkey(n) (&(n)->i_key.nk) 28 29 #define invalidateTMcache(t) ((t)->flags = 0) 30 31 32 /* returns the key, given the value of a table entry */ 33 #define keyfromval(v) \ 34 (gkey(cast(Node *, cast(char *, (v)) - offsetof(Node, i_val)))) 35 36 37 LUAI_FUNC const TValue *luaH_getint (Table *t, lua_Integer key); 38 LUAI_FUNC void luaH_setint (lua_State *L, Table *t, lua_Integer key, 39 TValue *value); 40 LUAI_FUNC const TValue *luaH_getshortstr (Table *t, TString *key); 41 LUAI_FUNC const TValue *luaH_getstr (Table *t, TString *key); 42 LUAI_FUNC const TValue *luaH_get (Table *t, const TValue *key); 43 LUAI_FUNC TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key); 44 LUAI_FUNC TValue *luaH_set (lua_State *L, Table *t, const TValue *key); 45 LUAI_FUNC Table *luaH_new (lua_State *L); 46 LUAI_FUNC void luaH_resize (lua_State *L, Table *t, unsigned int nasize, 47 unsigned int nhsize); 48 LUAI_FUNC void luaH_resizearray (lua_State *L, Table *t, unsigned int nasize); 49 LUAI_FUNC void luaH_free (lua_State *L, Table *t); 50 LUAI_FUNC int luaH_next (lua_State *L, Table *t, StkId key); 51 LUAI_FUNC int luaH_getn (Table *t); 52 53 54 #if defined(LUA_DEBUG) 55 LUAI_FUNC Node *luaH_mainposition (const Table *t, const TValue *key); 56 LUAI_FUNC int luaH_isdummy (Node *n); 57 #endif 58 59 60 #endif 61