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#ifndef QPODVECTOR_P_H
#define QPODVECTOR_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include <QtCore/qglobal.h>

QT_BEGIN_NAMESPACE

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

    const T &at(int idx) const {
        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;
    }

    void copyAndClear(QPODVector<T> &other) {
        if (other.m_data) ::free(other.m_data);
        other.m_count = m_count;
        other.m_capacity = m_capacity;
        other.m_data = m_data;
        m_count = 0;
        m_capacity = 0;
        m_data = 0;
    }

    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