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Diffstat (limited to 'src/declarative/qml/qdeclarativevme_p.h')
-rw-r--r-- | src/declarative/qml/qdeclarativevme_p.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/src/declarative/qml/qdeclarativevme_p.h b/src/declarative/qml/qdeclarativevme_p.h new file mode 100644 index 0000000..951f6a7 --- /dev/null +++ b/src/declarative/qml/qdeclarativevme_p.h @@ -0,0 +1,119 @@ +/**************************************************************************** +** +** Copyright (C) 2010 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 QDECLARATIVEVME_P_H +#define QDECLARATIVEVME_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 "qdeclarativeerror.h" +#include "qbitfield_p.h" + +#include <QtCore/QString> +#include <QtCore/QStack> + +QT_BEGIN_NAMESPACE + +class QObject; +class QDeclarativeInstruction; +class QDeclarativeCompiledData; +class QDeclarativeCompiledData; +class QDeclarativeContext; + +template<typename T, int N = 128> +class QDeclarativeVMEStack { +public: + QDeclarativeVMEStack() : index(-1), maxSize(N), data(fixedData) {} + ~QDeclarativeVMEStack() { 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 QDeclarativeVME +{ +public: + QDeclarativeVME(); + + QObject *run(QDeclarativeContext *, QDeclarativeCompiledData *, + int start = -1, int count = -1, + const QBitField & = QBitField()); + void runDeferred(QObject *); + + bool isError() const; + QList<QDeclarativeError> errors() const; + +private: + QObject *run(QDeclarativeVMEStack<QObject *> &, QDeclarativeContext *, QDeclarativeCompiledData *, + int start, int count, const QBitField &); + QList<QDeclarativeError> vmeErrors; +}; + +QT_END_NAMESPACE + +#endif // QDECLARATIVEVME_P_H |