From 5dfd17dd769d159a3b0722ddf82b385ff7271d53 Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Tue, 13 Dec 1994 13:54:21 -0200
Subject: new API function 'lua_pushliteral'

---
 inout.c  | 16 ++++++++--------
 lua.h    | 14 +++++++++-----
 opcode.c | 15 ++++++++++++++-
 strlib.c |  4 ++--
 4 files changed, 33 insertions(+), 16 deletions(-)

diff --git a/inout.c b/inout.c
index 31859a82..0f879d60 100644
--- a/inout.c
+++ b/inout.c
@@ -5,7 +5,7 @@
 ** Also provides some predefined lua functions.
 */
 
-char *rcs_inout="$Id: inout.c,v 2.12 1994/11/21 21:41:09 roberto Exp $";
+char *rcs_inout="$Id: inout.c,v 2.13 1994/11/23 14:32:00 roberto Stab $";
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -240,25 +240,25 @@ void luaI_type (void)
   switch (lua_type(o))
   {
     case LUA_T_NIL :
-      lua_pushstring("nil");
+      lua_pushliteral("nil");
       break;
     case LUA_T_NUMBER :
-      lua_pushstring("number");
+      lua_pushliteral("number");
       break;
     case LUA_T_STRING :
-      lua_pushstring("string");
+      lua_pushliteral("string");
       break;
     case LUA_T_ARRAY :
-      lua_pushstring("table");
+      lua_pushliteral("table");
       break;
     case LUA_T_FUNCTION :
-      lua_pushstring("function");
+      lua_pushliteral("function");
       break;
     case LUA_T_CFUNCTION :
-      lua_pushstring("cfunction");
+      lua_pushliteral("cfunction");
       break;
     default :
-      lua_pushstring("userdata");
+      lua_pushliteral("userdata");
       break;
   }
 }
diff --git a/lua.h b/lua.h
index 221060eb..6fe7aca0 100644
--- a/lua.h
+++ b/lua.h
@@ -2,7 +2,7 @@
 ** LUA - Linguagem para Usuarios de Aplicacao
 ** Grupo de Tecnologia em Computacao Grafica
 ** TeCGraf - PUC-Rio
-** $Id: lua.h,v 3.10 1994/11/17 21:27:30 roberto Exp roberto $
+** $Id: lua.h,v 3.11 1994/11/18 19:46:21 roberto Stab roberto $
 */
 
 
@@ -51,6 +51,7 @@ void          *lua_getuserdata  	(lua_Object object);
 int 	       lua_pushnil 		(void);
 int            lua_pushnumber 		(float n);
 int            lua_pushstring 		(char *s);
+int            lua_pushliteral 		(char *s);
 int            lua_pushcfunction	(lua_CFunction fn);
 int            lua_pushusertag     	(void *u, int tag);
 int            lua_pushobject       	(lua_Object object);
@@ -70,15 +71,12 @@ void	       lua_unlock		(int ref);
 lua_Object     lua_createtable		(int initSize);
 
 
-/* for lua 1.1 */
+/* some useful macros */
 
 #define lua_lockobject(o)  (lua_pushobject(o), lua_lock())
 
 #define lua_register(n,f)	(lua_pushcfunction(f), lua_storeglobal(n))
 
-#define lua_getindexed(o,n) (lua_pushobject(o), lua_pushnumber(n), lua_getsubscript())
-#define lua_getfield(o,f)   (lua_pushobject(o), lua_pushstring(f), lua_getsubscript())
-
 #define lua_pushuserdata(u)     lua_pushusertag(u, LUA_T_USERDATA)
 
 #define lua_isnil(_)            (lua_type(_)==LUA_T_NIL)
@@ -89,4 +87,10 @@ lua_Object     lua_createtable		(int initSize);
 #define lua_iscfunction(_)      (lua_type(_)==LUA_T_CFUNCTION)
 #define lua_isuserdata(_)       (lua_type(_)>=LUA_T_USERDATA)
 
+
+/* for lua 1.1 compatibility. Avoid using these macros */
+
+#define lua_getindexed(o,n) (lua_pushobject(o), lua_pushnumber(n), lua_getsubscript())
+#define lua_getfield(o,f)   (lua_pushobject(o), lua_pushstring(f), lua_getsubscript())
+
 #endif
diff --git a/opcode.c b/opcode.c
index 64dcca68..437a1da5 100644
--- a/opcode.c
+++ b/opcode.c
@@ -3,7 +3,7 @@
 ** TecCGraf - PUC-Rio
 */
 
-char *rcs_opcode="$Id: opcode.c,v 3.23 1994/11/30 21:20:37 roberto Exp roberto $";
+char *rcs_opcode="$Id: opcode.c,v 3.24 1994/12/06 14:27:18 roberto Exp roberto $";
 
 #include <setjmp.h>
 #include <stdio.h>
@@ -643,6 +643,19 @@ int lua_pushstring (char *s)
  return 0;
 }
 
+/*
+** Push an object (tag=string) on stack and register it on the constant table.
+   Return 0 on success or 1 on error.
+*/
+int lua_pushliteral (char *s)
+{
+ lua_checkstack(top-stack+1);
+ tsvalue(top) = lua_constant[luaI_findconstant(lua_constcreate(s))];
+ tag(top) = LUA_T_STRING;
+ top++;
+ return 0;
+}
+
 /*
 ** Push an object (tag=cfunction) to stack. Return 0 on success or 1 on error.
 */
diff --git a/strlib.c b/strlib.c
index a5d44da9..ef79ac82 100644
--- a/strlib.c
+++ b/strlib.c
@@ -3,7 +3,7 @@
 ** String library to LUA
 */
 
-char *rcs_strlib="$Id: strlib.c,v 1.4 1994/10/18 18:34:47 roberto Exp roberto $";
+char *rcs_strlib="$Id: strlib.c,v 1.5 1994/11/16 17:38:08 roberto Stab $";
 
 #include <string.h>
 #include <ctype.h>
@@ -67,7 +67,7 @@ static void str_sub (void)
  start = lua_getnumber (o2);
  end = o3 == NULL ? strlen(s) : lua_getnumber (o3);
  if (end < start || start < 1 || end > strlen(s))
-  lua_pushstring("");
+  lua_pushliteral("");
  else
  {
   s[end] = 0;
-- 
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