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diff --git a/libksieve/impl/parser.h b/libksieve/impl/parser.h
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+/*  -*- c++ -*-
+    impl/parser.h
+
+    Internal header file. Subject to change without notice. DO NOT USE.
+
+    This file is part of KSieve,
+    the KDE internet mail/usenet news message filtering library.
+    Copyright (c) 2003 Marc Mutz <mutz@kde.org>
+
+    KSieve is free software; you can redistribute it and/or modify it
+    under the terms of the GNU General Public License, version 2, as
+    published by the Free Software Foundation.
+
+    KSieve is distributed in the hope that it will be useful, but
+    WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+    In addition, as a special exception, the copyright holders give
+    permission to link the code of this program with any edition of
+    the Qt library by Trolltech AS, Norway (or with modified versions
+    of Qt that use the same license as Qt), and distribute linked
+    combinations including the two.  You must obey the GNU General
+    Public License in all respects for all of the code used other than
+    Qt.  If you modify this file, you may extend this exception to
+    your version of the file, but you are not obligated to do so.  If
+    you do not wish to do so, delete this exception statement from
+    your version.
+*/
+
+#ifndef __KSIEVE_IMPL_PARSER_H__
+#define __KSIEVE_IMPL_PARSER_H__
+
+#include <ksieve/parser.h>
+
+#include <ksieve/error.h>
+#include <ksieve/lexer.h>
+#include <impl/lexer.h>
+
+#include <ksieve/scriptbuilder.h>
+
+
+namespace KSieve {
+
+  class Parser::Impl {
+    friend class Parser;
+  private:
+    Impl( const char * scursor, const char * const send, int options=0 );
+
+    void setScriptBuilder( ScriptBuilder * builder ) {
+      mBuilder = builder;
+    }
+    ScriptBuilder * scriptBuilder() const {
+      return mBuilder;
+    }
+
+    bool parse();
+
+    const Error & error() const { return mError == Error::None ? lexer.error() : mError ; }
+
+    bool parseCommandList();
+
+    bool parseCommand();
+
+    bool parseArgumentList();
+
+    bool parseArgument();
+
+    bool parseTestList();
+
+    bool parseTest();
+
+    bool parseBlock();
+
+    bool parseStringList();
+
+    bool parseNumber();
+
+
+    Lexer::Token token() const { return mToken; }
+    QString tokenValue() const { return mTokenValue; }
+
+    bool atEnd() const {
+      return !mToken && lexer.atEnd() ;
+    }
+    bool obtainToken();
+    void consumeToken() {
+      mToken = Lexer::None;
+      mTokenValue = QString::null;
+    }
+    void makeError( Error::Type e, int line, int col ) {
+      mError = Error( e, line, col );
+      if ( scriptBuilder() )
+	scriptBuilder()->error( mError );
+    }
+    void makeError( Error::Type e ) {
+      makeError( e, lexer.line(), lexer.column() );
+    }
+    void makeUnexpectedTokenError( Error::Type e ) {
+      makeError( e ); // ### save wrong token...
+    }
+    bool isArgumentToken() const;
+    bool isStringToken() const;
+
+    Error mError;
+    Lexer::Token mToken;
+    QString mTokenValue;
+    Lexer::Impl lexer;
+    ScriptBuilder * mBuilder;
+  };
+
+}
+
+#endif // __KSIEVE_IMPL_PARSER_H__