1 /****************************************************************************
3 ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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5 ** Contact: Nokia Corporation (qt-info@nokia.com)
7 ** This file is part of the QtDeclarative module of the Qt Toolkit.
9 ** $QT_BEGIN_LICENSE:LGPL$
10 ** GNU Lesser General Public License Usage
11 ** This file may be used under the terms of the GNU Lesser General Public
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13 ** appearing in the file LICENSE.LGPL included in the packaging of this
14 ** file. Please review the following information to ensure the GNU Lesser
15 ** General Public License version 2.1 requirements will be met:
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18 ** In addition, as a special exception, Nokia gives you certain additional
19 ** rights. These rights are described in the Nokia Qt LGPL Exception
20 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
22 ** GNU General Public License Usage
23 ** Alternatively, this file may be used under the terms of the GNU General
24 ** Public License version 3.0 as published by the Free Software Foundation
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26 ** file. Please review the following information to ensure the GNU General
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40 ****************************************************************************/
42 #ifndef QDECLARATIVEVME_P_H
43 #define QDECLARATIVEVME_P_H
49 // This file is not part of the Qt API. It exists purely as an
50 // implementation detail. This header file may change from version to
51 // version without notice, or even be removed.
56 #include "qdeclarativeerror.h"
57 #include <private/qbitfield_p.h>
58 #include "qdeclarativeinstruction_p.h"
59 #include <private/qrecursionwatcher_p.h>
61 #include <QtCore/QStack>
62 #include <QtCore/QString>
63 #include <QtCore/qelapsedtimer.h>
64 #include <QtCore/qcoreapplication.h>
66 #include <private/qv8_p.h>
67 #include <private/qdeclarativeengine_p.h>
68 #include <private/qfinitestack_p.h>
74 class QDeclarativeScriptData;
75 class QDeclarativeCompiledData;
76 class QDeclarativeCompiledData;
77 class QDeclarativeContextData;
79 namespace QDeclarativeVMETypes {
83 List(int t) : type(t) {}
86 QDeclarativeListProperty<void> qListProperty;
89 Q_DECLARE_TYPEINFO(QDeclarativeVMETypes::List, Q_PRIMITIVE_TYPE | Q_MOVABLE_TYPE);
93 Q_DECLARE_TR_FUNCTIONS(QDeclarativeVME)
98 inline Interrupt(bool *runWhile);
99 inline Interrupt(int nsecs);
102 inline bool shouldInterrupt() const;
104 enum Mode { None, Time, Flag };
115 QDeclarativeVME() : data(0), componentAttached(0) {}
116 QDeclarativeVME(void *data) : data(data), componentAttached(0) {}
119 QDeclarativeComponentAttached *componentAttached;
120 QList<QDeclarativeEnginePrivate::FinalizeCallback> finalizeCallbacks;
122 void init(QDeclarativeContextData *, QDeclarativeCompiledData *, int start,
123 QDeclarativeContextData * = 0);
124 bool initDeferred(QObject *);
127 QObject *execute(QList<QDeclarativeError> *errors, const Interrupt & = Interrupt());
128 bool complete(const Interrupt & = Interrupt());
131 friend class QDeclarativeVMEGuard;
133 QObject *run(QList<QDeclarativeError> *errors, const Interrupt &
134 #ifdef QML_THREADED_VME_INTERPRETER
135 , void ***storeJumpTable = 0
138 v8::Persistent<v8::Object> run(QDeclarativeContextData *, QDeclarativeScriptData *);
140 #ifdef QML_THREADED_VME_INTERPRETER
141 static void **instructionJumpTable();
142 friend class QDeclarativeCompiledData;
145 QDeclarativeEngine *engine;
146 QRecursionNode recursion;
148 QFiniteStack<QObject *> objects;
149 QFiniteStack<QDeclarativeVMETypes::List> lists;
151 QFiniteStack<QDeclarativeAbstractBinding *> bindValues;
152 QFiniteStack<QDeclarativeParserStatus *> parserStatus;
153 QDeclarativeGuardedContextData rootContext;
154 QDeclarativeGuardedContextData creationContext;
157 enum Flag { Deferred = 0x00000001 };
159 State() : flags(0), context(0), compiledData(0), instructionStream(0) {}
161 QDeclarativeContextData *context;
162 QDeclarativeCompiledData *compiledData;
163 const char *instructionStream;
164 QBitField bindingSkipList;
167 QStack<State> states;
169 static void blank(QFiniteStack<QDeclarativeParserStatus *> &);
170 static void blank(QFiniteStack<QDeclarativeAbstractBinding *> &);
173 // Used to check that a QDeclarativeVME that is interrupted mid-execution
174 // is still valid. Checks all the objects and contexts have not been
176 class QDeclarativeVMEGuard
179 QDeclarativeVMEGuard();
180 ~QDeclarativeVMEGuard();
182 void guard(QDeclarativeVME *);
189 QDeclarativeGuard<QObject> *m_objects;
191 QDeclarativeGuardedContextData *m_contexts;
194 QDeclarativeVME::Interrupt::Interrupt()
199 QDeclarativeVME::Interrupt::Interrupt(bool *runWhile)
200 : mode(Flag), runWhile(runWhile)
204 QDeclarativeVME::Interrupt::Interrupt(int nsecs)
205 : mode(Time), nsecs(nsecs)
209 void QDeclarativeVME::Interrupt::reset()
215 bool QDeclarativeVME::Interrupt::shouldInterrupt() const
219 } else if (mode == Time) {
220 return timer.nsecsElapsed() > nsecs;
221 } else if (mode == Flag) {
230 #endif // QDECLARATIVEVME_P_H