From 9bf05e7364295cc6322f2ebb413994a2f42c4a80 Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Fri, 27 Feb 2009 15:17:13 -0300
Subject: [PATCH] code section 'Traceback' moved to the beginning of the file

---
 lauxlib.c | 113 +++++++++++++++++++++++++++++-------------------------
 1 file changed, 61 insertions(+), 52 deletions(-)

diff --git a/lauxlib.c b/lauxlib.c
index 469553ae..532ce052 100644
--- a/lauxlib.c
+++ b/lauxlib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lauxlib.c,v 1.181 2009/02/17 14:31:16 roberto Exp roberto $
+** $Id: lauxlib.c,v 1.182 2009/02/18 17:20:56 roberto Exp roberto $
 ** Auxiliary functions for building Lua libraries
 ** See Copyright Notice in lua.h
 */
@@ -29,6 +29,66 @@
 					lua_gettop(L) + (i) + 1)
 
 
+/*
+** {======================================================
+** Traceback
+** =======================================================
+*/
+
+
+#define LEVELS1	12	/* size of the first part of the stack */
+#define LEVELS2	10	/* size of the second part of the stack */
+
+
+static void pushfuncname (lua_State *L, lua_Debug *ar) {
+  if (*ar->namewhat != '\0')  /* is there a name? */
+    lua_pushfstring(L, "function " LUA_QS, ar->name);
+  else if (*ar->what == 'm')  /* main? */
+      lua_pushfstring(L, "main chunk");
+  else if (*ar->what == 'C' || *ar->what == 't')
+    lua_pushliteral(L, "?");  /* C function or tail call */
+  else
+    lua_pushfstring(L, "function <%s:%d>", ar->short_src, ar->linedefined);
+}
+
+
+static int countlevels (lua_State *L) {
+  lua_Debug ar;
+  int level = 1;
+  while (lua_getstack(L, level, &ar)) level++;
+  return level;
+}
+
+
+LUALIB_API void luaL_traceback (lua_State *L, lua_State *L1,
+                                const char *msg, int level) {
+  lua_Debug ar;
+  int top = lua_gettop(L);
+  int numlevels = countlevels(L1);
+  int mark = (numlevels > LEVELS1 + LEVELS2) ? LEVELS1 : 0;
+  if (msg) lua_pushfstring(L, "%s\n", msg);
+  lua_pushliteral(L, "stack traceback:");
+  while (lua_getstack(L1, level++, &ar)) {
+    if (level == mark) {  /* too many levels? */
+      lua_pushliteral(L, "\n\t...");  /* add a '...' */
+      level = numlevels - LEVELS2;  /* and skip to last ones */
+    }
+    else {
+      lua_getinfo(L1, "Sln", &ar);
+      lua_pushfstring(L, "\n\t%s:", ar.short_src);
+      if (ar.currentline > 0)
+        lua_pushfstring(L, "%d:", ar.currentline);
+      lua_pushliteral(L, " in ");
+      pushfuncname(L, &ar);
+      lua_concat(L, lua_gettop(L) - top);
+    }
+  }
+  lua_concat(L, lua_gettop(L) - top);
+}
+
+/* }====================================================== */
+
+
 /*
 ** {======================================================
 ** Error-report functions
@@ -87,57 +147,6 @@ LUALIB_API int luaL_error (lua_State *L, const char *fmt, ...) {
   return lua_error(L);
 }
 
-
-#define LEVELS1	12	/* size of the first part of the stack */
-#define LEVELS2	10	/* size of the second part of the stack */
-
-
-static void pushfuncname (lua_State *L, lua_Debug *ar) {
-  if (*ar->namewhat != '\0')  /* is there a name? */
-    lua_pushfstring(L, "function " LUA_QS, ar->name);
-  else if (*ar->what == 'm')  /* main? */
-      lua_pushfstring(L, "main chunk");
-  else if (*ar->what == 'C' || *ar->what == 't')
-    lua_pushliteral(L, "?");  /* C function or tail call */
-  else
-    lua_pushfstring(L, "function <%s:%d>", ar->short_src, ar->linedefined);
-}
-
-
-static int countlevels (lua_State *L) {
-  lua_Debug ar;
-  int level = 1;
-  while (lua_getstack(L, level, &ar)) level++;
-  return level;
-}
-
-
-LUALIB_API void luaL_traceback (lua_State *L, lua_State *L1,
-                                const char *msg, int level) {
-  lua_Debug ar;
-  int top = lua_gettop(L);
-  int numlevels = countlevels(L1);
-  int mark = (numlevels > LEVELS1 + LEVELS2) ? LEVELS1 : 0;
-  if (msg) lua_pushfstring(L, "%s\n", msg);
-  lua_pushliteral(L, "stack traceback:");
-  while (lua_getstack(L1, level++, &ar)) {
-    if (level == mark) {  /* too many levels? */
-      lua_pushliteral(L, "\n\t...");  /* add a '...' */
-      level = numlevels - LEVELS2;  /* and skip to last ones */
-    }
-    else {
-      lua_getinfo(L1, "Sln", &ar);
-      lua_pushfstring(L, "\n\t%s:", ar.short_src);
-      if (ar.currentline > 0)
-        lua_pushfstring(L, "%d:", ar.currentline);
-      lua_pushliteral(L, " in ");
-      pushfuncname(L, &ar);
-      lua_concat(L, lua_gettop(L) - top);
-    }
-  }
-  lua_concat(L, lua_gettop(L) - top);
-}
-
 /* }====================================================== */