source: vscpl/src/hu/varadiistvan/scpl/io/_posix/StreamBuffer.h@ 21:22a8774452ac

// Copyright (c) 2013 by István Váradi

// This file is part of VSCPL, a simple cross-platform utility library

// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:

// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
// ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// The views and conclusions contained in the software and documentation are those
// of the authors and should not be interpreted as representing official policies,
// either expressed or implied, of the FreeBSD Project.

#ifndef HU_VARADIISTVAN_SCPL_IO_POSIX_STREAMBUFFER_H
#define HU_VARADIISTVAN_SCPL_IO_POSIX_STREAMBUFFER_H
//------------------------------------------------------------------------------

#include "../Buffer.h"
#include "../Failable.h"

#include "BufferedStream.h"

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

namespace hu { namespace varadiistvan { namespace scpl { namespace io {

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

/**
 * Base class for buffers used by a BufferedStream.
 */
class StreamBuffer : public Buffer, public FailableReference<StreamBuffer>
{
protected:
    /**
     * Our buffered stream.
     */
    BufferedStream& stream;

protected:
    /**
     * Construct the buffer with the given waitable.
     */
    StreamBuffer(size_t capacity, BufferedStream* stream);

private:
    /**
     * Get the failable object.
     */
    const Failable& getFailable() const;

    /**
     * Get the failable object.
     */
    Failable& getFailable();

    friend class FailableReference<StreamBuffer>;
};

//------------------------------------------------------------------------------
// Inline definitions
//------------------------------------------------------------------------------

inline StreamBuffer::StreamBuffer(size_t capacity, BufferedStream* stream) :
    Buffer(capacity),
    stream(*stream)
{
}

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

inline const Failable& StreamBuffer::getFailable() const
{
    return stream;
}

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

inline Failable& StreamBuffer::getFailable()
{
    return stream;
}

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

} /* namespace hu::varadiistvan::scpl::io */ } /* namespace hu::varadiistvan::scpl */ } /* namespace hu::varadiistvan */ } /* namespace hu */

//------------------------------------------------------------------------------
#endif // HU_VARADIISTVAN_SCPL_IO_POSIX_STREAMBUFFER_H

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