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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QMLVME_P_H
#define QMLVME_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "qmlerror.h"
#include "qbitfield_p.h"
#include <QtCore/QString>
#include <QtCore/QStack>
QT_BEGIN_NAMESPACE
class QObject;
class QmlInstruction;
class QmlCompiledData;
class QmlCompiledData;
class QmlContext;
template<typename T, int N = 128>
class QmlVMEStack {
public:
QmlVMEStack() : index(-1), maxSize(N), data(fixedData) {}
~QmlVMEStack() { if (data != fixedData) qFree(fixedData); }
bool isEmpty() const { return index == -1; }
const T &top() const { return data[index]; }
void push(const T &i) { ++index; if (index == maxSize) realloc(); data[index] = i; }
const T &pop() { --index; return data[index + 1]; }
int count() const { return index + 1; }
const T &at(int idx) { return data[idx]; }
private:
void realloc() {
maxSize += N;
if (data != fixedData) {
data = (T*)qRealloc(data, maxSize * sizeof(T));
} else {
data = (T*)qMalloc(maxSize * sizeof(T));
}
}
int index;
int maxSize;
T *data;
T fixedData[N];
};
class QmlVME
{
public:
QmlVME();
QObject *run(QmlContext *, QmlCompiledData *,
int start = -1, int count = -1,
const QBitField & = QBitField());
void runDeferred(QObject *);
bool isError() const;
QList<QmlError> errors() const;
private:
QObject *run(QmlVMEStack<QObject *> &, QmlContext *, QmlCompiledData *,
int start, int count, const QBitField &);
QList<QmlError> vmeErrors;
};
QT_END_NAMESPACE
#endif // QMLVME_P_H
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