/****************************************************************************

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the QtXmlPatterns module of the Qt Toolkit.

**

** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

** Alternatively, this file may be used under the terms of the GNU Lesser

** General Public License version 2.1 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL included in the

** packaging of this file.  Please review the following information to

** ensure the GNU Lesser General Public License version 2.1 requirements

** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

****************************************************************************/

/**

 * @file

 * @short This file is included by qstackcontextbase_p.h.

 * If you need includes in this file, put them in qstackcontextbase_p.h, outside of the namespace.

 */

template<typename TSuperClass>

StackContextBase<TSuperClass>::StackContextBase() : m_rangeVariables(10),

                                                    m_expressionVariables(10),

                                                    m_positionIterators(5),

                                                    m_itemCacheCells(5),

                                                    m_itemSequenceCacheCells(5)

{

    /* The m_* containers are initialized with default sizes. Estimated guesses on usage patterns. */

}

template<typename TSuperClass>

StackContextBase<TSuperClass>::StackContextBase(const DynamicContext::Ptr &prevContext)

                                                : TSuperClass(prevContext),

                                                  m_rangeVariables(10),

                                                  m_expressionVariables(10),

                                                  m_positionIterators(5),

                                                  m_itemCacheCells(5),

                                                  m_itemSequenceCacheCells(5)

{

    Q_ASSERT(prevContext);

}

template<typename TSuperClass>

ItemCacheCell &StackContextBase<TSuperClass>::itemCacheCell(const VariableSlotID slot)

{

    if(slot >= m_itemCacheCells.size())

        m_itemCacheCells.resize(qMax(slot + 1, m_itemCacheCells.size()));

    return m_itemCacheCells[slot];

}

template<typename TSuperClass>

ItemSequenceCacheCell::Vector &StackContextBase<TSuperClass>::itemSequenceCacheCells(const VariableSlotID slot)

{

    if(slot >= m_itemSequenceCacheCells.size())

        m_itemSequenceCacheCells.resize(qMax(slot + 1, m_itemSequenceCacheCells.size()));

    return m_itemSequenceCacheCells;

}

template<typename TSuperClass>

Item StackContextBase<TSuperClass>::rangeVariable(const VariableSlotID slot) const

{

    Q_ASSERT(slot < m_rangeVariables.size());

    Q_ASSERT(m_rangeVariables.at(slot));

    return m_rangeVariables.at(slot);

}

template<typename TSuperClass>

Expression::Ptr StackContextBase<TSuperClass>::expressionVariable(const VariableSlotID slot) const

{

    Q_ASSERT(slot < m_expressionVariables.size());

    Q_ASSERT(m_expressionVariables.at(slot));

    return m_expressionVariables.at(slot);

}

template<typename TSuperClass>

Item::Iterator::Ptr StackContextBase<TSuperClass>::positionIterator(const VariableSlotID slot) const

{

    Q_ASSERT(slot < m_positionIterators.size());

    return m_positionIterators.at(slot);

}

template<typename TSuperClass>

template<typename VectorType, typename UnitType>

inline

void StackContextBase<TSuperClass>::setSlotVariable(const VariableSlotID slot,

                                                    const UnitType &newValue,

                                                    VectorType &container) const

{

    if(slot < container.size())

        container.replace(slot, newValue);

    else

    {

        container.resize(slot + 1);

        container.replace(slot, newValue);

    }

}

template<typename TSuperClass>

void StackContextBase<TSuperClass>::setRangeVariable(const VariableSlotID slot,

                                                     const Item &newValue)

{

    setSlotVariable(slot, newValue, m_rangeVariables);

}

template<typename TSuperClass>

void StackContextBase<TSuperClass>::setExpressionVariable(const VariableSlotID slot,

                                                          const Expression::Ptr &newValue)

{

    setSlotVariable(slot, newValue, m_expressionVariables);

}

template<typename TSuperClass>

void StackContextBase<TSuperClass>::setPositionIterator(const VariableSlotID slot,

                                                        const Item::Iterator::Ptr &newValue)

{

    setSlotVariable(slot, newValue, m_positionIterators);

}

template<typename TSuperClass>

DynamicContext::TemplateParameterHash &StackContextBase<TSuperClass>::templateParameterStore()

{

    return m_templateParameterStore;

}