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diff --git a/src/vhdlscanner.h b/src/vhdlscanner.h
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+/******************************************************************************
+ *
+ * $Id: vhdlscanner.h,v 1.9 2001/03/19 19:27:39 root Exp $
+ *
+ * Copyright (C) 1997-2011 by Dimitri van Heesch.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation under the terms of the GNU General Public License is hereby 
+ * granted. No representations are made about the suitability of this software 
+ * for any purpose. It is provided "as is" without express or implied warranty.
+ * See the GNU General Public License for more details.
+ *
+ * Documents produced by Doxygen are derivative works derived from the
+ * input used in their production; they are not affected by this license.
+ *
+ */
+
+#ifndef VHDLSCANNER_H
+#define VHDLSCANNER_H
+
+#include "parserintf.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <ctype.h>
+
+#include <qarray.h>
+#include <unistd.h>
+#include <qfile.h>
+#include <qdict.h>
+
+#include "entry.h"
+#include "memberlist.h"
+
+class Entry;
+class ClassSDict;
+class FileStorage;
+class ClassDef;
+class MemberDef;
+class QStringList;
+
+
+/** \brief VHDL parser using state-based lexical scanning.
+ *
+ * This is the VHDL language parser for doxygen.
+ */
+class VHDLLanguageScanner : public ParserInterface
+{
+  public:
+    virtual ~VHDLLanguageScanner() {}
+    void parseInput(const char * fileName, 
+                    const char *fileBuf, 
+                    Entry *root);
+    bool needsPreprocessing(const QCString &extension);
+    void parseCode(CodeOutputInterface &codeOutIntf,
+                   const char *scopeName,
+                   const QCString &input,
+                   bool isExampleBlock,
+                   const char *exampleName=0,
+                   FileDef *fileDef=0,
+                   int startLine=-1,
+                   int endLine=-1,
+                   bool inlineFragment=FALSE,
+                   MemberDef *memberDef=0,
+                   bool showLineNumbers=TRUE
+                  );
+    void resetCodeParserState();
+    void parsePrototype(const char *text);
+};
+
+void vhdlscanFreeScanner();
+
+//---------------------------------------------------------------------------------
+
+#endif