qv4sparsearray.cpp

/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qv4sparsearray_p.h"
#include "qv4runtime_p.h"
#include "qv4object_p.h"
#include "qv4functionobject_p.h"
#include "qv4scopedvalue_p.h"
#include <stdlib.h>

#ifdef QT_QMAP_DEBUG
# include <qstring.h>
# include <qvector.h>
#endif

using namespace QV4;

const SparseArrayNode *SparseArrayNode::nextNode() const
{
    const SparseArrayNode *n = this;
    if (n->right) {
        n = n->right;
        while (n->left)
            n = n->left;
    } else {
        const SparseArrayNode *y = n->parent();
        while (y && n == y->right) {
            n = y;
            y = n->parent();
        }
        n = y;
    }
    return n;
}

const SparseArrayNode *SparseArrayNode::previousNode() const
{
    const SparseArrayNode *n = this;
    if (n->left) {
        n = n->left;