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#ifndef QDATABUFFER_P_H

#define QDATABUFFER_P_H

//

//  W A R N I N G

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

//

// This file is not part of the Qt API.  It exists for the convenience

// of other Qt classes.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include "QtCore/qbytearray.h"

QT_BEGIN_NAMESPACE

template <typename Type> class QDataBuffer

{

public:

    QDataBuffer(int res = 64)

    {

        capacity = res;

        buffer = (Type*) qMalloc(capacity * sizeof(Type));

        siz = 0;

    }

    ~QDataBuffer()

    {

        qFree(buffer);

    }

    inline void reset() { siz = 0; }

    inline bool isEmpty() const { return siz==0; }

    inline int size() const { return siz; }

    inline Type *data() const { return buffer; }

    inline Type &at(int i) { Q_ASSERT(i >= 0 && i < siz); return buffer[i]; }

    inline const Type &at(int i) const { Q_ASSERT(i >= 0 && i < siz); return buffer[i]; }

    inline const Type &last() const { Q_ASSERT(!isEmpty()); return buffer[siz-1]; }

    inline const Type &first() const { Q_ASSERT(!isEmpty()); return buffer[0]; }

    inline void add(const Type &t) {

        reserve(siz + 1);

        buffer[siz] = t;

        ++siz;

    }

    inline void resize(int size) {

        reserve(size);

        siz = size;

    }

    inline void reserve(int size) {

        if (size > capacity) {

            while (capacity < size)

                capacity *= 2;

            buffer = (Type*) qRealloc(buffer, capacity * sizeof(Type));

        }

    }

    inline void shrink(int size) {

        capacity = size;

        buffer = (Type*) qRealloc(buffer, capacity * sizeof(Type));

    }

    inline void swap(QDataBuffer<Type> &other) {

        qSwap(capacity, other.capacity);

        qSwap(siz, other.siz);

        qSwap(buffer, other.buffer);

    }

    inline QDataBuffer &operator<<(const Type &t) { add(t); return *this; }

private:

    int capacity;

    int siz;

    Type *buffer;

};

QT_END_NAMESPACE

#endif // QDATABUFFER_P_H