66 lines
2 KiB
C
66 lines
2 KiB
C
/*
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** $Id: ltable.h,v 2.23 2016/12/22 13:08:50 roberto Exp $
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** Lua tables (hash)
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** See Copyright Notice in lua.h
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*/
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#ifndef ltable_h
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#define ltable_h
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#include "lobject.h"
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#define gnode(t,i) (&(t)->node[i])
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#define gval(n) (&(n)->i_val)
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#define gnext(n) ((n)->i_key.nk.next)
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/* 'const' to avoid wrong writings that can mess up field 'next' */
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#define gkey(n) cast(const TValue*, (&(n)->i_key.tvk))
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/*
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** writable version of 'gkey'; allows updates to individual fields,
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** but not to the whole (which has incompatible type)
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*/
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#define wgkey(n) (&(n)->i_key.nk)
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#define invalidateTMcache(t) ((t)->flags = 0)
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/* true when 't' is using 'dummynode' as its hash part */
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#define isdummy(t) ((t)->lastfree == NULL)
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/* allocated size for hash nodes */
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#define allocsizenode(t) (isdummy(t) ? 0 : sizenode(t))
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/* returns the key, given the value of a table entry */
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#define keyfromval(v) \
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(gkey(cast(Node *, cast(char *, (v)) - offsetof(Node, i_val))))
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LUAI_FUNC const TValue* luaH_getint(Table* t, lua_Integer key);
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LUAI_FUNC void luaH_setint(lua_State* L, Table* t, lua_Integer key,
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TValue* value);
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LUAI_FUNC const TValue* luaH_getshortstr(Table* t, TString* key);
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LUAI_FUNC const TValue* luaH_getstr(Table* t, TString* key);
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LUAI_FUNC const TValue* luaH_get(Table* t, const TValue* key);
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LUAI_FUNC TValue* luaH_newkey(lua_State* L, Table* t, const TValue* key);
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LUAI_FUNC TValue* luaH_set(lua_State* L, Table* t, const TValue* key);
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LUAI_FUNC Table* luaH_new(lua_State* L);
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LUAI_FUNC void luaH_resize(lua_State* L, Table* t, unsigned int nasize,
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unsigned int nhsize);
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LUAI_FUNC void luaH_resizearray(lua_State* L, Table* t, unsigned int nasize);
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LUAI_FUNC void luaH_free(lua_State* L, Table* t);
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LUAI_FUNC int luaH_next(lua_State* L, Table* t, StkId key);
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LUAI_FUNC int luaH_getn(Table* t);
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#if defined(LUA_DEBUG)
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LUAI_FUNC Node *luaH_mainposition (const Table *t, const TValue *key);
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LUAI_FUNC int luaH_isdummy (const Table *t);
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#endif
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#endif
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