external/mit/lua/dist/src/ltable.h

   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