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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the $MODULE$ of the Qt Toolkit.
**
** $TROLLTECH_DUAL_LICENSE$
**
****************************************************************************/
#ifndef QMLBASICSCRIPT_H
#define QMLBASICSCRIPT_H
#include "instructions.h"
#include <QtCore/QList>
#include <QtCore/QByteArray>
#include "lexer.h"
#include <QtCore/QVariant>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Declarative)
class QmlRefCount;
class QmlContext;
class QmlBasicScriptPrivate;
class QmlBasicScriptNodeCache;
class QmlBasicScript
{
public:
QmlBasicScript();
QmlBasicScript(const char *, QmlRefCount * = 0);
~QmlBasicScript();
// Always 4-byte aligned
const char *compileData() const;
unsigned int compileDataSize() const;
QByteArray expression() const;
bool compile(const QByteArray &);
bool compile(const char *);
bool isValid() const;
void clear();
void dump();
void *newScriptState();
void deleteScriptState(void *);
enum CacheState { NoChange, Incremental, Reset };
QVariant run(QmlContext *, void *, CacheState *);
// Optimization opportunities
bool isSingleLoad() const;
QByteArray singleLoadTarget() const;
private:
int flags;
QmlBasicScriptPrivate *d;
QmlRefCount *rc;
void clearCache(void *);
void guard(QmlBasicScriptNodeCache &);
bool valid(QmlBasicScriptNodeCache &, QObject *);
};
#endif // QMLBASICSCRIPT_H
QT_END_NAMESPACE
QT_END_HEADER
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