From 6048c4f74d7d63d6c2f5a53cd8e4ee01f6702be9 Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Wed, 7 Mar 2001 15:09:25 -0300
Subject: better way to link callinfo's and stack

---
 lobject.h | 22 +++++++---------------
 1 file changed, 7 insertions(+), 15 deletions(-)

(limited to 'lobject.h')

diff --git a/lobject.h b/lobject.h
index 16c3f53e..23ca0d03 100644
--- a/lobject.h
+++ b/lobject.h
@@ -1,5 +1,5 @@
 /*
-** $Id: lobject.h,v 1.99 2001/02/23 20:32:32 roberto Exp roberto $
+** $Id: lobject.h,v 1.100 2001/03/02 17:27:50 roberto Exp roberto $
 ** Type definitions for Lua objects
 ** See Copyright Notice in lua.h
 */
@@ -22,24 +22,15 @@
 #endif
 
 
-/* ttype for closures active in the stack */
-#define LUA_TMARK	6
-
 
 /* tags for values visible from Lua == first user-created tag */
 #define NUM_TAGS	6
 
 
-/* check whether `t' is a mark */
-#define is_T_MARK(t)	(ttype(t) == LUA_TMARK)
-
-
-
 typedef union {
   struct TString *ts;
   struct Closure *cl;
   struct Hash *h;
-  struct CallInfo *info;
   lua_Number n;		/* LUA_TNUMBER */
 } Value;
 
@@ -56,7 +47,6 @@ typedef struct lua_TObject {
 #define tsvalue(o)      ((o)->value.ts)
 #define clvalue(o)      ((o)->value.cl)
 #define hvalue(o)       ((o)->value.h)
-#define infovalue(o)	((o)->value.info)
 
 
 /* Macros to set values */
@@ -75,9 +65,6 @@ typedef struct lua_TObject {
 #define sethvalue(obj,x) \
   { TObject *_o=(obj); _o->tt=LUA_TTABLE; _o->value.h=(x); }
 
-#define setivalue(obj,x) \
-  { TObject *_o=(obj); _o->tt=LUA_TMARK; _o->value.info=(x); }
-
 #define setnilvalue(obj) ((obj)->tt=LUA_TNIL)
 
 #define setobj(obj1,obj2) \
@@ -85,6 +72,8 @@ typedef struct lua_TObject {
     o1->tt=o2->tt; o1->value = o2->value; }
 
 
+typedef TObject *StkId;  /* index to stack elements */
+
 
 /*
 ** String headers for string table
@@ -209,13 +198,16 @@ typedef struct Hash {
 ** informations about a call (for debugging)
 */
 typedef struct CallInfo {
-  struct Closure *func;  /* function being called */
+  struct CallInfo *prev;  /* linked list */
+  StkId base;  /* base for called function */
   const Instruction **pc;  /* current pc of called function */
   int lastpc;  /* last pc traced */
   int line;  /* current line */
   int refi;  /* current index in `lineinfo' */
 } CallInfo;
 
+#define ci_func(ci)	(clvalue((ci)->base - 1))
+
 
 extern const TObject luaO_nilobject;
 
-- 
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