/* Theoretic - Graph Theoretic Byte Code Engineering
 * Copyright (C) 2001-2002  Jay Freeman (saurik)
*/

/*
 *        Redistribution and use in source and binary
 * forms, with or without modification, are permitted
 * provided that the following conditions are met:
 * 
 * 1. Redistributions of source code must retain the
 *    above copyright notice, this list of conditions
 *    and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the
 *    above copyright notice, this list of conditions
 *    and the following disclaimer in the documentation
 *    and/or other materials provided with the
 *    distribution.
 * 3. The name of the author may not be used to endorse
 *    or promote products derived from this software
 *    without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#ifndef THEORETIC_VPROCESSOR_H
#define THEORETIC_VPROCESSOR_H

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include "theoretic/VContext.h"
#include "theoretic/VObject.h"

namespace Theoretic {

    class THEORETIC_API VPathNotImplementedException {};

    class NullResolver : public PrefixResolver {
        XalanDOMString uri;

        virtual const XalanDOMString *getNamespaceForPrefix(const XalanDOMString &prefix) const {
            return NULL;
        }

        virtual const XalanDOMString &getURI() const {
            return uri;
        }
    };

    class OpTester {
    };

    class THEORETIC_API VProcessor {
      protected:
        XPath xpath;
	    XPathProcessorImpl process;
        NullResolver resolver;

        XPathExpression *expr;

      public:
        VProcessor(const std::wstring &path);
        virtual ~VProcessor();

        VObjectPtr Step(VContext &context, int pos);
        VObjectPtr Execute(VContext &context, int pos = 0);

      private:
        int GetArgLen(int pos);
    };

}

#endif//THEORETIC_VPROCESSOR_H