/home/brandes/workspace/LAMA/src/lama/LAMAArrayView.hpp

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#ifndef LAMA_LAMAARRAYVIEW_HPP_
#define LAMA_LAMAARRAYVIEW_HPP_

// for dll_import
#include <lama/config.hpp>

// base classes
#include <lama/Printable.hpp>

// others
#include <lama/LAMAArray.hpp>

namespace lama
{

template<typename T>
class ReadAccess;

template<typename T>
class WriteAccess;

template<typename T>
class LAMAArrayConstView;

template<typename T>
class LAMA_DLL_IMPORTEXPORT LAMAArrayView : public Printable
{
    friend class ReadAccess<T>;
    friend class WriteAccess<T>;
    friend class LAMAArrayConstView<T>;

public:
    typedef T ValueType;

    LAMAArrayView( LAMAArray<T>& array );

    LAMAArrayView( LAMAArray<T>& array, const IndexType offset, const IndexType size );

    LAMAArrayView( const LAMAArrayView<T>& other );

    virtual ~LAMAArrayView();

    inline IndexType size() const;

    virtual void writeAt(std::ostream& stream) const;

    bool operator==( const LAMAArrayConstView<T>& other ) const;

    bool operator!=( const LAMAArrayConstView<T>& other ) const;

    bool operator==( const LAMAArrayView<T>& other ) const;

    bool operator!=( const LAMAArrayView<T>& other ) const;

private:
    LAMAArrayView();
    LAMAArrayView& operator=( const LAMAArrayView<T>& other );

    const ValueType* get(const size_t index) const;

    ValueType* get(const size_t index);

    int acquireReadAccess( ContextPtr context ) const;

    void releaseReadAccess( const size_t index ) const;

    int acquireWriteAccess( ContextPtr context, bool keepFlag );

    int acquireWriteAccess();

    void releaseWriteAccess( const size_t index );

    void clear( const size_t index );

    void resize( const size_t index, const IndexType newSize );

    void reserve( const size_t index, const IndexType capacity, bool copyFlag );

    IndexType capacity( const size_t index ) const;

    LAMAArray<T>&   mArray;
    const IndexType mOffset;
    IndexType mSize;
};

template<typename T>
class LAMAArrayConstView : public Printable
{
    friend class ReadAccess<T>;

public:
    typedef T ValueType;

    LAMAArrayConstView( const LAMAArrayConstView<T>& other );

    LAMAArrayConstView( const LAMAArrayView<T>& view );

    LAMAArrayConstView( const LAMAArray<T>& array );

    LAMAArrayConstView( const LAMAArray<T>& array, const IndexType offset, const IndexType size );

    virtual ~LAMAArrayConstView();

    inline IndexType size() const;

    virtual void writeAt(std::ostream& stream) const;

    bool operator==( const LAMAArrayConstView<T>& other ) const;

    bool operator!=( const LAMAArrayConstView<T>& other ) const;

    bool operator==( const LAMAArrayView<T>& other ) const;

    bool operator!=( const LAMAArrayView<T>& other ) const;

private:
    LAMAArrayConstView();
    LAMAArrayConstView& operator=( const LAMAArrayConstView<T>& other );

    const ValueType* get(const size_t index) const;

    int acquireReadAccess( ContextPtr context ) const;

    void releaseReadAccess( const size_t index ) const;

    const LAMAArray<T>& mArray;
    const IndexType     mOffset;
    const IndexType     mSize;
};

template<typename T>
inline IndexType LAMAArrayView<T>::size() const
{
    return mSize;
}

template<typename T>
inline IndexType LAMAArrayConstView<T>::size() const
{
    return mSize;
}

} /* namespace lama */

#endif // LAMA_LAMAARRAYVIEW_HPP_