/*
 * Copyright 1999-2000,2004 The Apache Software Foundation.
 * 
 * Licensed 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.
 */

/**
 * $Log: RefStackOf.c,v $
 * Revision 1.5  2004/09/08 13:56:23  peiyongz
 * Apache License Version 2.0
 *
 * Revision 1.4  2003/12/17 00:18:35  cargilld
 * Update to memory management so that the static memory manager (one used to call Initialize) is only for static data.
 *
 * Revision 1.3  2003/05/16 06:01:52  knoaman
 * Partial implementation of the configurable memory manager.
 *
 * Revision 1.2  2002/11/04 15:22:04  tng
 * C++ Namespace Support.
 *
 * Revision 1.1.1.1  2002/02/01 22:22:12  peiyongz
 * sane_include
 *
 * Revision 1.3  2000/03/02 19:54:44  roddey
 * This checkin includes many changes done while waiting for the
 * 1.1.0 code to be finished. I can't list them all here, but a list is
 * available elsewhere.
 *
 * Revision 1.2  2000/02/06 07:48:03  rahulj
 * Year 2K copyright swat.
 *
 * Revision 1.1.1.1  1999/11/09 01:05:02  twl
 * Initial checkin
 *
 * Revision 1.2  1999/11/08 20:45:13  rahul
 * Swat for adding in Product name and CVS comment log variable.
 *
 */


// ---------------------------------------------------------------------------
//  Includes
// ---------------------------------------------------------------------------
#if defined(XERCES_TMPLSINC)
#include <xercesc/util/RefStackOf.hpp>
#endif

XERCES_CPP_NAMESPACE_BEGIN

// ---------------------------------------------------------------------------
//  RefStackOf: Constructors and Destructor
// ---------------------------------------------------------------------------
template <class TElem>
RefStackOf<TElem>::RefStackOf(const unsigned int initElems,
                              const bool adoptElems,
                              MemoryManager* const manager) :

    fVector(initElems, adoptElems, manager)
{
}

template <class TElem> RefStackOf<TElem>::~RefStackOf()
{
}


// ---------------------------------------------------------------------------
//  RefStackOf: Element management methods
// ---------------------------------------------------------------------------
template <class TElem> const TElem* RefStackOf<TElem>::
elementAt(const unsigned int index) const
{
    if (index > fVector.size())
        ThrowXMLwithMemMgr(ArrayIndexOutOfBoundsException, XMLExcepts::Stack_BadIndex, fVector.getMemoryManager());
    return fVector.elementAt(index);
}

template <class TElem> void RefStackOf<TElem>::push(TElem* const toPush)
{
    fVector.addElement(toPush);
}

template <class TElem> const TElem* RefStackOf<TElem>::peek() const
{
    const int curSize = fVector.size();
    if (curSize == 0)
        ThrowXMLwithMemMgr(EmptyStackException, XMLExcepts::Stack_EmptyStack, fVector.getMemoryManager());

    return fVector.elementAt(curSize-1);
}

template <class TElem> TElem* RefStackOf<TElem>::pop()
{
    const int curSize = fVector.size();
    if (curSize == 0)
        ThrowXMLwithMemMgr(EmptyStackException, XMLExcepts::Stack_EmptyStack, fVector.getMemoryManager());

    // Orphan off the element from the last slot in the vector
    return fVector.orphanElementAt(curSize-1);
}

template <class TElem> void RefStackOf<TElem>::removeAllElements()
{
    fVector.removeAllElements();
}


// ---------------------------------------------------------------------------
//  RefStackOf: Getter methods
// ---------------------------------------------------------------------------
template <class TElem> bool RefStackOf<TElem>::empty()
{
    return (fVector.size() == 0);
}

template <class TElem> unsigned int RefStackOf<TElem>::curCapacity()
{
    return fVector.curCapacity();
}

template <class TElem> unsigned int RefStackOf<TElem>::size()
{
    return fVector.size();
}




// ---------------------------------------------------------------------------
//  RefStackEnumerator: Constructors and Destructor
// ---------------------------------------------------------------------------
template <class TElem> RefStackEnumerator<TElem>::
RefStackEnumerator(         RefStackOf<TElem>* const    toEnum
                    , const bool                        adopt) :
    fAdopted(adopt)
    , fCurIndex(0)
    , fToEnum(toEnum)
    , fVector(&toEnum->fVector)
{
}

template <class TElem> RefStackEnumerator<TElem>::~RefStackEnumerator()
{
    if (fAdopted)
        delete fToEnum;
}


// ---------------------------------------------------------------------------
//  RefStackEnumerator: Enum interface
// ---------------------------------------------------------------------------
template <class TElem> bool RefStackEnumerator<TElem>::hasMoreElements() const
{
    if (fCurIndex >= fVector->size())
        return false;
    return true;
}

template <class TElem> TElem& RefStackEnumerator<TElem>::nextElement()
{
    return *fVector->elementAt(fCurIndex++);
}

template <class TElem> void RefStackEnumerator<TElem>::Reset()
{
    fCurIndex = 0;
}

XERCES_CPP_NAMESPACE_END