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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the QtDeclarative 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 either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QPODVECTOR_P_H
#define QPODVECTOR_P_H

#include <QtCore/qglobal.h>

QT_BEGIN_NAMESPACE

template<class T>
class QPODVector 
{
public:
    QPODVector()
    : m_count(0), m_capacity(0), m_data(0) {}

    const T &at(int idx) {
        return m_data[idx];
    }

    T &operator[](int idx) {
        return m_data[idx];
    }

    void clear() {
        m_count = 0;
    }

    void prepend(const T &v) {
        insert(0, v);
    }

    void append(const T &v) {
        insert(m_count, v);
    }

    void insert(int idx, const T &v) {
        if (m_count == m_capacity) {
            m_capacity += 1024;
            m_data = (T *)realloc(m_data, m_capacity * sizeof(T));
        }
        int moveCount = m_count - idx;
        if (moveCount)
            ::memmove(m_data + idx + 1, m_data + idx, moveCount * sizeof(T));
        m_count++;
        m_data[idx] = v;
    }

    void insertBlank(int idx, int count) {
        int newSize = m_count + count;
        if (newSize >= m_capacity) {
            m_capacity = (newSize + 1023) & 0xFFFFFC00;
            m_data = (T *)realloc(m_data, m_capacity * sizeof(T));
        }

        int moveCount = m_count - idx;
        if (moveCount) 
            ::memmove(m_data + idx + count,  m_data + idx, 
                      moveCount * sizeof(T));
        m_count = newSize;
    }

    void remove(int idx, int count = 1) {
        int moveCount = m_count - (idx + count);
        if (moveCount)
            ::memmove(m_data + idx, m_data + idx + count, 
                      moveCount * sizeof(T));
        m_count -= count;
    }
    
    int count() const {
        return m_count;
    }

    QPODVector<T> &operator<<(const T &v) { append(v); return *this; }
private:
    QPODVector(const QPODVector &);
    QPODVector &operator=(const QPODVector &);
    int m_count;
    int m_capacity;
    T *m_data;
};
QT_END_NAMESPACE

#endif