/*

 * Licensed to the Apache Software Foundation (ASF) under one or more

 * contributor license agreements.  See the NOTICE file distributed with

 * this work for additional information regarding copyright ownership.

 * The ASF licenses this file to You under the Apache License, Version 2.0

 * (the "License"); you may not use this file except in compliance with

 * the License.  You may obtain a copy of the License at

 * 

 *      http://www.apache.org/licenses/LICENSE-2.0

 * 

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

/*

 * $Id: XPathMatcherStack.hpp 568078 2007-08-21 11:43:25Z amassari $

 */

#if !defined(XPATHMATCHERSTACK_HPP)

#define XPATHMATCHERSTACK_HPP

// ---------------------------------------------------------------------------

//  Includes

// ---------------------------------------------------------------------------

#include <xercesc/validators/schema/identity/XPathMatcher.hpp>

XERCES_CPP_NAMESPACE_BEGIN

class VALIDATORS_EXPORT XPathMatcherStack : public XMemory

{

public:

    // -----------------------------------------------------------------------

    //  Constructors/Destructor

    // -----------------------------------------------------------------------

    XPathMatcherStack(MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);

	~XPathMatcherStack();

	// -----------------------------------------------------------------------

    //  Getter methods

    // -----------------------------------------------------------------------

    XPathMatcher* getMatcherAt(const unsigned int index) const;

    unsigned int  getMatcherCount() const;

    unsigned int  size() const;

	// -----------------------------------------------------------------------

    //  Access methods

    // -----------------------------------------------------------------------

    void addMatcher(XPathMatcher* const matcher);

	// -----------------------------------------------------------------------

    //  Stack methods

    // -----------------------------------------------------------------------

    void pushContext();

    void popContext();

	// -----------------------------------------------------------------------

    //  Reset methods

    // -----------------------------------------------------------------------

    void clear();

private:

    // -----------------------------------------------------------------------

    //  Private helper methods

    // -----------------------------------------------------------------------

    void cleanUp();

    // -----------------------------------------------------------------------

    //  Unimplemented contstructors and operators

    // -----------------------------------------------------------------------

    XPathMatcherStack(const XPathMatcherStack& other);

    XPathMatcherStack& operator= (const XPathMatcherStack& other);

    // -----------------------------------------------------------------------

    //  Data members

    // -----------------------------------------------------------------------

    unsigned int                fMatchersCount;

    ValueStackOf<int>*          fContextStack;

    RefVectorOf<XPathMatcher>*  fMatchers;

};

// ---------------------------------------------------------------------------

//  XPathMatcherStack: Getter methods

// ---------------------------------------------------------------------------

inline unsigned int XPathMatcherStack::size() const {

    return fContextStack->size();

}

inline unsigned int XPathMatcherStack::getMatcherCount() const {

    return fMatchersCount;

}

inline XPathMatcher*

XPathMatcherStack::getMatcherAt(const unsigned int index) const {

    return fMatchers->elementAt(index);

}

// ---------------------------------------------------------------------------

//  XPathMatcherStack: Stack methods

// ---------------------------------------------------------------------------

inline void XPathMatcherStack::pushContext() {

    fContextStack->push(fMatchersCount);

}

inline void XPathMatcherStack::popContext() {

    fMatchersCount = fContextStack->pop();

}

// ---------------------------------------------------------------------------

//  XPathMatcherStack: Access methods

// ---------------------------------------------------------------------------

inline void XPathMatcherStack::addMatcher(XPathMatcher* const matcher) {

    if (fMatchersCount == fMatchers->size()) {

        fMatchers->addElement(matcher);

        fMatchersCount++;

    }

    else {

        fMatchers->setElementAt(matcher, fMatchersCount++);

    }

}

XERCES_CPP_NAMESPACE_END

#endif

/**

  * End of file XPathMatcherStack.hpp

  */