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Diffstat (limited to 'src/declarative/qml/qdeclarativeexpression_p.h')
| -rw-r--r-- | src/declarative/qml/qdeclarativeexpression_p.h | 406 |
1 files changed, 0 insertions, 406 deletions
diff --git a/src/declarative/qml/qdeclarativeexpression_p.h b/src/declarative/qml/qdeclarativeexpression_p.h deleted file mode 100644 index 541a06dba5..0000000000 --- a/src/declarative/qml/qdeclarativeexpression_p.h +++ /dev/null @@ -1,406 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** This file is part of the QtDeclarative module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** 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. -** -** 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. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#ifndef QDECLARATIVEEXPRESSION_P_H -#define QDECLARATIVEEXPRESSION_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 "qdeclarativeexpression.h" - -#include <private/qv8engine_p.h> -#include <private/qfieldlist_p.h> -#include <private/qflagpointer_p.h> -#include <private/qdeletewatcher_p.h> -#include <private/qdeclarativeguard_p.h> -#include <private/qpointervaluepair_p.h> -#include <private/qdeclarativeengine_p.h> - -QT_BEGIN_NAMESPACE - -class QDeclarativeAbstractExpression -{ -public: - QDeclarativeAbstractExpression(); - virtual ~QDeclarativeAbstractExpression(); - - bool isValid() const; - - QDeclarativeContextData *context() const; - void setContext(QDeclarativeContextData *); - - virtual void refresh(); - - class DeleteWatcher { - public: - inline DeleteWatcher(QDeclarativeAbstractExpression *); - inline ~DeleteWatcher(); - inline bool wasDeleted() const; - private: - friend class QDeclarativeAbstractExpression; - QDeclarativeContextData *_c; - QDeclarativeAbstractExpression **_w; - QDeclarativeAbstractExpression *_s; - }; - -private: - friend class QDeclarativeContext; - friend class QDeclarativeContextData; - friend class QDeclarativeContextPrivate; - - QBiPointer<QDeclarativeContextData, DeleteWatcher> m_context; - QDeclarativeAbstractExpression **m_prevExpression; - QDeclarativeAbstractExpression *m_nextExpression; -}; - -class QDeclarativeDelayedError -{ -public: - inline QDeclarativeDelayedError() : nextError(0), prevError(0) {} - inline ~QDeclarativeDelayedError() { removeError(); } - - QDeclarativeError error; - - bool addError(QDeclarativeEnginePrivate *); - - inline void removeError() { - if (!prevError) return; - if (nextError) nextError->prevError = prevError; - *prevError = nextError; - nextError = 0; - prevError = 0; - } - -private: - QDeclarativeDelayedError *nextError; - QDeclarativeDelayedError **prevError; -}; - -class QDeclarativeJavaScriptExpression -{ -public: - // Although this looks crazy, we implement our own "vtable" here, rather than relying on - // C++ virtuals, to save memory. By doing it ourselves, we can overload the storage - // location that is use for the vtable to also store the rarely used delayed error. - // If we use C++ virtuals, we can't do this and it consts us an extra sizeof(void *) in - // memory for every expression. - struct VTable { - QString (*expressionIdentifier)(QDeclarativeJavaScriptExpression *); - void (*expressionChanged)(QDeclarativeJavaScriptExpression *); - }; - - QDeclarativeJavaScriptExpression(VTable *vtable); - - v8::Local<v8::Value> evaluate(QDeclarativeContextData *, v8::Handle<v8::Function>, - bool *isUndefined); - - inline bool requiresThisObject() const; - inline void setRequiresThisObject(bool v); - inline bool useSharedContext() const; - inline void setUseSharedContext(bool v); - inline bool notifyOnValueChanged() const; - - void setNotifyOnValueChanged(bool v); - void resetNotifyOnValueChanged(); - - inline QObject *scopeObject() const; - inline void setScopeObject(QObject *v); - - class DeleteWatcher { - public: - inline DeleteWatcher(QDeclarativeJavaScriptExpression *); - inline ~DeleteWatcher(); - inline bool wasDeleted() const; - private: - friend class QDeclarativeJavaScriptExpression; - QObject *_c; - QDeclarativeJavaScriptExpression **_w; - QDeclarativeJavaScriptExpression *_s; - }; - - inline bool hasError() const; - inline bool hasDelayedError() const; - QDeclarativeError error() const; - void clearError(); - QDeclarativeDelayedError *delayedError(); - -protected: - ~QDeclarativeJavaScriptExpression(); - -private: - typedef QDeclarativeJavaScriptExpressionGuard Guard; - friend class QDeclarativeJavaScriptExpressionGuard; - - struct GuardCapture : public QDeclarativeEnginePrivate::PropertyCapture { - GuardCapture(QDeclarativeEngine *engine, QDeclarativeJavaScriptExpression *e) - : engine(engine), expression(e), errorString(0) { } - - ~GuardCapture() { - Q_ASSERT(guards.isEmpty()); - Q_ASSERT(errorString == 0); - } - - virtual void captureProperty(QDeclarativeNotifier *); - virtual void captureProperty(QObject *, int, int); - - QDeclarativeEngine *engine; - QDeclarativeJavaScriptExpression *expression; - QFieldList<Guard, &Guard::next> guards; - QStringList *errorString; - }; - - QPointerValuePair<VTable, QDeclarativeDelayedError> m_vtable; - - // We store some flag bits in the following flag pointers. - // m_scopeObject:flag1 - requiresThisObject - // activeGuards:flag1 - notifyOnValueChanged - // activeGuards:flag2 - useSharedContext - QBiPointer<QObject, DeleteWatcher> m_scopeObject; - QForwardFieldList<Guard, &Guard::next> activeGuards; - - void clearGuards(); -}; - -class QDeclarativeExpression; -class QString; -class Q_DECLARATIVE_PRIVATE_EXPORT QDeclarativeExpressionPrivate : public QObjectPrivate, public QDeclarativeJavaScriptExpression, public QDeclarativeAbstractExpression -{ - Q_DECLARE_PUBLIC(QDeclarativeExpression) -public: - QDeclarativeExpressionPrivate(); - ~QDeclarativeExpressionPrivate(); - - void init(QDeclarativeContextData *, const QString &, QObject *); - void init(QDeclarativeContextData *, v8::Handle<v8::Function>, QObject *); - void init(QDeclarativeContextData *, const QString &, bool, QObject *, const QString &, int, int); - void init(QDeclarativeContextData *, const QByteArray &, bool, QObject *, const QString &, int, int); - - QVariant value(QObject *secondaryScope = 0, bool *isUndefined = 0); - - v8::Local<v8::Value> v8value(QObject *secondaryScope = 0, bool *isUndefined = 0); - - static inline QDeclarativeExpressionPrivate *get(QDeclarativeExpression *expr); - static inline QDeclarativeExpression *get(QDeclarativeExpressionPrivate *expr); - - void _q_notify(); - - static void exceptionToError(v8::Handle<v8::Message>, QDeclarativeError &); - static v8::Persistent<v8::Function> evalFunction(QDeclarativeContextData *ctxt, QObject *scope, - const QString &code, const QString &filename, - int line, - v8::Persistent<v8::Object> *qmlscope = 0); - static v8::Persistent<v8::Function> evalFunction(QDeclarativeContextData *ctxt, QObject *scope, - const char *code, int codeLength, - const QString &filename, int line, - v8::Persistent<v8::Object> *qmlscope = 0); - - static QDeclarativeExpression *create(QDeclarativeContextData *, QObject *, const QString &, bool, - const QString &, int, int); - - bool expressionFunctionValid:1; - bool expressionFunctionRewritten:1; - bool extractExpressionFromFunction:1; - - // "Inherited" from QDeclarativeJavaScriptExpression - static QString expressionIdentifier(QDeclarativeJavaScriptExpression *); - static void expressionChanged(QDeclarativeJavaScriptExpression *); - virtual void expressionChanged(); - - QString expression; - QByteArray expressionUtf8; - - v8::Persistent<v8::Object> v8qmlscope; - v8::Persistent<v8::Function> v8function; - - QString url; // This is a QString for a reason. QUrls are slooooooow... - int line; - int column; - QString name; //function name, hint for the debugger - - QDeclarativeRefCount *dataRef; -}; - -QDeclarativeAbstractExpression::DeleteWatcher::DeleteWatcher(QDeclarativeAbstractExpression *e) -: _c(0), _w(0), _s(e) -{ - if (e->m_context.isT1()) { - _w = &_s; - _c = e->m_context.asT1(); - e->m_context = this; - } else { - // Another watcher is already registered - _w = &e->m_context.asT2()->_s; - } -} - -QDeclarativeAbstractExpression::DeleteWatcher::~DeleteWatcher() -{ - Q_ASSERT(*_w == 0 || (*_w == _s && _s->m_context.isT2())); - if (*_w && _s->m_context.asT2() == this) - _s->m_context = _c; -} - -bool QDeclarativeAbstractExpression::DeleteWatcher::wasDeleted() const -{ - return *_w == 0; -} - -QDeclarativeJavaScriptExpression::DeleteWatcher::DeleteWatcher(QDeclarativeJavaScriptExpression *e) -: _c(0), _w(0), _s(e) -{ - if (e->m_scopeObject.isT1()) { - _w = &_s; - _c = e->m_scopeObject.asT1(); - e->m_scopeObject = this; - } else { - // Another watcher is already registered - _w = &e->m_scopeObject.asT2()->_s; - } -} - -QDeclarativeJavaScriptExpression::DeleteWatcher::~DeleteWatcher() -{ - Q_ASSERT(*_w == 0 || (*_w == _s && _s->m_scopeObject.isT2())); - if (*_w && _s->m_scopeObject.asT2() == this) - _s->m_scopeObject = _c; -} - -bool QDeclarativeJavaScriptExpression::DeleteWatcher::wasDeleted() const -{ - return *_w == 0; -} - -bool QDeclarativeJavaScriptExpression::requiresThisObject() const -{ - return m_scopeObject.flag(); -} - -void QDeclarativeJavaScriptExpression::setRequiresThisObject(bool v) -{ - m_scopeObject.setFlagValue(v); -} - -bool QDeclarativeJavaScriptExpression::useSharedContext() const -{ - return activeGuards.flag2(); -} - -void QDeclarativeJavaScriptExpression::setUseSharedContext(bool v) -{ - activeGuards.setFlag2Value(v); -} - -bool QDeclarativeJavaScriptExpression::notifyOnValueChanged() const -{ - return activeGuards.flag(); -} - -QObject *QDeclarativeJavaScriptExpression::scopeObject() const -{ - if (m_scopeObject.isT1()) return m_scopeObject.asT1(); - else return m_scopeObject.asT2()->_c; -} - -void QDeclarativeJavaScriptExpression::setScopeObject(QObject *v) -{ - if (m_scopeObject.isT1()) m_scopeObject = v; - else m_scopeObject.asT2()->_c = v; -} - -bool QDeclarativeJavaScriptExpression::hasError() const -{ - return m_vtable.hasValue() && m_vtable.constValue()->error.isValid(); -} - -bool QDeclarativeJavaScriptExpression::hasDelayedError() const -{ - return m_vtable.hasValue(); -} - -QDeclarativeExpressionPrivate *QDeclarativeExpressionPrivate::get(QDeclarativeExpression *expr) -{ - return static_cast<QDeclarativeExpressionPrivate *>(QObjectPrivate::get(expr)); -} - -QDeclarativeExpression *QDeclarativeExpressionPrivate::get(QDeclarativeExpressionPrivate *expr) -{ - return expr->q_func(); -} - -QDeclarativeJavaScriptExpressionGuard::QDeclarativeJavaScriptExpressionGuard(QDeclarativeJavaScriptExpression *e) -: expression(e), next(0) -{ - callback = &endpointCallback; -} - -void QDeclarativeJavaScriptExpressionGuard::endpointCallback(QDeclarativeNotifierEndpoint *e) -{ - QDeclarativeJavaScriptExpression *expression = - static_cast<QDeclarativeJavaScriptExpressionGuard *>(e)->expression; - - expression->m_vtable->expressionChanged(expression); -} - -QDeclarativeJavaScriptExpressionGuard * -QDeclarativeJavaScriptExpressionGuard::New(QDeclarativeJavaScriptExpression *e, - QDeclarativeEngine *engine) -{ - Q_ASSERT(e); - return QDeclarativeEnginePrivate::get(engine)->jsExpressionGuardPool.New(e); -} - -void QDeclarativeJavaScriptExpressionGuard::Delete() -{ - QRecyclePool<QDeclarativeJavaScriptExpressionGuard>::Delete(this); -} - -QT_END_NAMESPACE - -#endif // QDECLARATIVEEXPRESSION_P_H |