back to the basics (well-behaved variant record...)

lgc.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lgc.c,v 1.85 2001/02/02 15:13:05 roberto Exp roberto $
+** $Id: lgc.c,v 1.86 2001/02/02 16:23:20 roberto Exp roberto $
 ** Garbage Collector
 ** See Copyright Notice in lua.h
 */
@@ -147,7 +147,7 @@ static void traversetable (GCState *st, Hash *h) {
     Node *n = node(h, i);
     if (ttype(val(n)) == LUA_TNIL) {
       if (ttype_key(n) != LUA_TNIL)
-        n->key_value.v = NULL;  /* dead key; remove it */
+        n->key_value.ts = NULL;  /* dead key; remove it */
     }
     else {
       lua_assert(ttype_key(n) != LUA_TNIL);

lobject.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lobject.h,v 1.92 2001/02/01 17:40:48 roberto Exp roberto $
+** $Id: lobject.h,v 1.93 2001/02/02 15:13:05 roberto Exp roberto $
 ** Type definitions for Lua objects
 ** See Copyright Notice in lua.h
 */
@@ -36,7 +36,10 @@
 
 
 typedef union {
-  void *v;
+  struct TString *ts;
+  struct Closure *cl;
+  struct Hash *h;
+  struct CallInfo *info;
   lua_Number n;		/* LUA_TNUMBER */
 } Value;
 
@@ -50,10 +53,10 @@ typedef struct lua_TObject {
 /* Macros to access values */
 #define ttype(o)        ((o)->tt)
 #define nvalue(o)       ((o)->value.n)
-#define tsvalue(o)      ((struct TString *)(o)->value.v)
-#define clvalue(o)      ((struct Closure *)(o)->value.v)
-#define hvalue(o)       ((struct Hash *)(o)->value.v)
-#define infovalue(o)	((struct CallInfo *)(o)->value.v)
+#define tsvalue(o)      ((o)->value.ts)
+#define clvalue(o)      ((o)->value.cl)
+#define hvalue(o)       ((o)->value.h)
+#define infovalue(o)	((o)->value.info)
 #define svalue(o)       (tsvalue(o)->str)
 
 
@@ -62,24 +65,19 @@ typedef struct lua_TObject {
   { TObject *_o=(obj); _o->tt=LUA_TNUMBER; _o->value.n=(x); }
 
 #define setsvalue(obj,x) \
-  { TObject *_o=(obj); struct TString *_v=(x); \
-    _o->tt=LUA_TSTRING; _o->value.v=_v; }
+  { TObject *_o=(obj); _o->tt=LUA_TSTRING; _o->value.ts=(x); }
 
 #define setuvalue(obj,x) \
-  { TObject *_o=(obj); struct TString *_v=(x); \
-    _o->tt=LUA_TUSERDATA; _o->value.v=_v; }
+  { TObject *_o=(obj); _o->tt=LUA_TUSERDATA; _o->value.ts=(x); }
 
 #define setclvalue(obj,x) \
-  { TObject *_o=(obj); struct Closure *_v=(x); \
-    _o->tt=LUA_TFUNCTION; _o->value.v=_v; }
+  { TObject *_o=(obj); _o->tt=LUA_TFUNCTION; _o->value.cl=(x); }
 
 #define sethvalue(obj,x) \
-  { TObject *_o=(obj); struct Hash *_v=(x); \
-    _o->tt=LUA_TTABLE; _o->value.v=_v; }
+  { TObject *_o=(obj); _o->tt=LUA_TTABLE; _o->value.h=(x); }
 
 #define setivalue(obj,x) \
-  { TObject *_o=(obj); struct CallInfo *_v=(x); \
-    _o->tt=LUA_TMARK; _o->value.v=_v; }
+  { TObject *_o=(obj); _o->tt=LUA_TMARK; _o->value.info=(x); }
 
 #define setnilvalue(obj) ((obj)->tt=LUA_TNIL)
 

ltable.h

@@ -1,5 +1,5 @@
 /*
-** $Id: ltable.h,v 1.30 2001/01/29 13:02:20 roberto Exp roberto $
+** $Id: ltable.h,v 1.31 2001/01/29 17:17:26 roberto Exp roberto $
 ** Lua tables (hash)
 ** See Copyright Notice in lua.h
 */
@@ -15,7 +15,7 @@
 
 #define ttype_key(_n)		((_n)->key_tt)
 #define nvalue_key(_n)		((_n)->key_value.n)
-#define tsvalue_key(_n)		((TString *)(_n)->key_value.v)
+#define tsvalue_key(_n)		((_n)->key_value.ts)
 #define setkey2obj(_o,_k) \
   ((_o)->tt = ttype_key(_k), (_o)->value = (_k)->key_value)
 #define setobj2key(_k,_o) \