KAVIterator.cc

Go to the documentation of this file.

/*
 * KAVIterator.cc
 *
 * Smalltalk like class library for C++
 * Collection keys and values iterator.
 *
 * 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/KAVIterator.h>
#include <stlib/Association.h>
#include <stlib/Dictionary.h>
#include <stlib/Object.h>
#include <stlib/String.h>

KeysAndValuesIterator::KeysAndValuesIterator(const Dictionary *coll)
  : CollectionIterator(coll)
{
}

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

/* Accessing protocol */
Object *KeysAndValuesIterator::key(void)
{
    if (!item->isAssociation())
        error(new String("Improper object for iteration. Association expected."));
    return ((Association *) item)->key();
}

Object *KeysAndValuesIterator::value(void)
{
    if (!item->isAssociation())
        error(new String("Improper object for iteration. Association expected."));
    return ((Association *) item)->value();
}

---