PostScriptFunction::transform optimization

Do not create and destroy a PSStack each time
PostScriptFunction::transform is called gives a 7% speedup on heavy
PostScriptFunction::transform pdf like nytimes firefox ad

1 files changed, 15 insertions, 0 deletions

diff --git a/poppler/Function.h b/poppler/Function.h
index d16873d7..4cf6fd0e 100644
--- a/poppler/Function.h
+++ b/poppler/Function.h
@@ -6,6 +6,20 @@
 //
 //========================================================================
 
+//========================================================================
+//
+// Modified under the Poppler project - http://poppler.freedesktop.org
+//
+// All changes made under the Poppler project to this file are licensed
+// under GPL version 2 or later
+//
+// Copyright (C) 2009 Albert Astals Cid <aacid@kde.org>
+//
+// To see a description of the changes please see the Changelog file that
+// came with your tarball or type make ChangeLog if you are building from git
+//
+//========================================================================
+
 #ifndef FUNCTION_H
 #define FUNCTION_H
 
@@ -220,6 +234,7 @@ private:
 
   GooString *codeString;
   PSObject *code;
+  PSStack *stack;
   int codeSize;
   GBool ok;
 };