WriteStream.cc

Go to the documentation of this file.

/*
 * WriteStream.cc
 *
 * Smalltalk like class library for C++
 * Internal write stream.
 *
 * Copyright (c) 2003 Milan Cermak
 */
/*
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#include <stlib/WriteStream.h>
#include <stlib/SequenceableCollection.h>
#include <stlib/String.h>

WriteStream::WriteStream(SequenceableCollection *collection)
  : InternalStream(collection)
{
    /* Does nothing */
}

/* Class-accessing protocol */
String *WriteStream::className(void) const
{
    return new String("WriteStream");
}

/* Accessing protocol */
SequenceableCollection *WriteStream::contents(void)
{
    read_limit = (read_limit < _position) ? _position : read_limit;
    return dynamic_cast<SequenceableCollection *>(collection->copy(0, _position));
}

void WriteStream::flush(void)
{
    /* Does nothing */
}

Object *WriteStream::next(void)
{
    shouldNotImplement(new String(__PRETTY_FUNCTION__));
    return nil;
}

void WriteStream::nextPut(Object *object)
{
    if (_position == write_limit)
        pastEndPut(object);
    else
        collection->put(_position++, object);
}

/* Testing protocol */
bool WriteStream::isReadable(void)
{
    return false;
}

bool WriteStream::isWritable(void)
{
    return true;
}

---