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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the V4VM module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <qv4internalclass.h>
#include <qv4string.h>
#include <qv4engine.h>
#include <qv4identifier.h>
namespace QQmlJS {
namespace VM {
InternalClass::InternalClass(const QQmlJS::VM::InternalClass &other)
: engine(other.engine)
, propertyTable(other.propertyTable)
, nameMap(other.nameMap)
, propertyData(other.propertyData)
, transitions()
, size(other.size)
{
}
InternalClass *InternalClass::addMember(String *string, PropertyAttributes data, uint *index)
{
engine->identifierCache->toIdentifier(string);
uint id = string->identifier | ((uint)data << 24);
assert(propertyTable.constFind(id) == propertyTable.constEnd());
QHash<int, InternalClass *>::const_iterator tit = transitions.constFind(id);
if (index)
*index = size;
if (tit != transitions.constEnd()) {
return tit.value();
} else {
// create a new class and add it to the tree
InternalClass *newClass = new InternalClass(*this);
newClass->propertyTable.insert(string->identifier, size);
newClass->nameMap.append(string);
newClass->propertyData.append(data);
++newClass->size;
transitions.insert(id, newClass);
return newClass;
}
}
void InternalClass::removeMember(Object *object, uint id)
{
assert (propertyTable.constFind(id) != propertyTable.constEnd());
int propIdx = propertyTable.constFind(id).value();
assert(propIdx < size);
int toRemove = - (int)id;
QHash<int, InternalClass *>::const_iterator tit = transitions.constFind(toRemove);
if (tit != transitions.constEnd()) {
object->internalClass = tit.value();
return;
}
// create a new class and add it to the tree
object->internalClass = engine->emptyClass;
for (int i = 0; i < nameMap.size(); ++i) {
if (i == propIdx)
continue;
object->internalClass = object->internalClass->addMember(nameMap.at(i), propertyData.at(i));
}
transitions.insert(toRemove, object->internalClass);
}
uint InternalClass::find(String *string)
{
engine->identifierCache->toIdentifier(string);
uint id = string->identifier;
QHash<uint, uint>::const_iterator it = propertyTable.constFind(id);
if (it != propertyTable.constEnd())
return it.value();
return UINT_MAX;
}
}
}
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