new structure for collectable objects, sharing a common header

1 files changed, 7 insertions, 1 deletions

diff --git a/lapi.c b/lapi.c
index d87bf134..012db0aa 100644
--- a/lapi.c
+++ b/lapi.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lapi.c,v 1.210 2002/08/07 14:24:24 roberto Exp roberto $
+** $Id: lapi.c,v 1.211 2002/08/08 20:08:41 roberto Exp roberto $
 ** Lua API
 ** See Copyright Notice in lua.h
 */
@@ -211,6 +211,12 @@ LUA_API int lua_isstring (lua_State *L, int index) {
 }
 
 
+LUA_API int lua_isuserdata (lua_State *L, int index) {
+  const TObject *o = luaA_indexAcceptable(L, index);
+  return (o != NULL && (ttisuserdata(o) || ttislightuserdata(o)));
+}
+
+
 LUA_API int lua_rawequal (lua_State *L, int index1, int index2) {
   StkId o1 = luaA_indexAcceptable(L, index1);
   StkId o2 = luaA_indexAcceptable(L, index2);