Imported Upstream version 5.3.4

[platform/upstream/lua.git] / src / ltable.h

diff --git a/src/ltable.h b/src/ltable.h
index 213cc13..6da9024 100644 (file)
--- a/src/ltable.h
+++ b/src/ltable.h
@@ -1,5 +1,5 @@
 /*
-** $Id: ltable.h,v 2.21 2015/11/03 15:47:30 roberto Exp $
+** $Id: ltable.h,v 2.23 2016/12/22 13:08:50 roberto Exp $
 ** Lua tables (hash)
 ** See Copyright Notice in lua.h
 */
@@ -15,7 +15,7 @@
 #define gnext(n)       ((n)->i_key.nk.next)
 
 
-/* 'const' to avoid wrong writings that can mess up field 'next' */ 
+/* 'const' to avoid wrong writings that can mess up field 'next' */
 #define gkey(n)                cast(const TValue*, (&(n)->i_key.tvk))
 
 /*
@@ -27,6 +27,14 @@
 #define invalidateTMcache(t)   ((t)->flags = 0)
 
 
+/* true when 't' is using 'dummynode' as its hash part */
+#define isdummy(t)             ((t)->lastfree == NULL)
+
+
+/* allocated size for hash nodes */
+#define allocsizenode(t)       (isdummy(t) ? 0 : sizenode(t))
+
+
 /* returns the key, given the value of a table entry */
 #define keyfromval(v) \
   (gkey(cast(Node *, cast(char *, (v)) - offsetof(Node, i_val))))
@@ -51,7 +59,7 @@ LUAI_FUNC int luaH_getn (Table *t);
 
 #if defined(LUA_DEBUG)
 LUAI_FUNC Node *luaH_mainposition (const Table *t, const TValue *key);
-LUAI_FUNC int luaH_isdummy (Node *n);
+LUAI_FUNC int luaH_isdummy (const Table *t);
 #endif