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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the QtScript module of the Qt Toolkit.

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     9 ** $QT_BEGIN_LICENSE:LGPL$

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    16 ** GNU Lesser General Public License Usage

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    38 ** $QT_END_LICENSE$

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    40 ****************************************************************************/

    41 

    42 #ifndef QSCRIPTQOBJECT_P_H

    43 #define QSCRIPTQOBJECT_P_H

    44 

    45 //

    46 //  W A R N I N G

    47 //  -------------

    48 //

    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.

    52 //

    53 // We mean it.

    54 //

    55 

    56 #include "qscriptobject_p.h"

    57 

    58 #include "qscriptengine.h"

    59 #include <QtCore/qpointer.h>

    60 

    61 #include "InternalFunction.h"

    62 

    63 QT_BEGIN_NAMESPACE

    64 

    65 namespace QScript

    66 {

    67 

    68 enum AttributeExtension {

    69     // ### Make sure there's no conflict with JSC::Attribute

    70     QObjectMemberAttribute = 1 << 12

    71 };

    72 

    73 class QObjectDelegate : public QScriptObjectDelegate

    74 {

    75 public:

    76     struct Data

    77     {

    78         QPointer<QObject> value;

    79         QScriptEngine::ValueOwnership ownership;

    80         QScriptEngine::QObjectWrapOptions options;

    81 

    82         QHash<QByteArray, JSC::JSValue> cachedMembers;

    83 

    84         Data(QObject *o, QScriptEngine::ValueOwnership own,

    85              QScriptEngine::QObjectWrapOptions opt)

    86             : value(o), ownership(own), options(opt) {}

    87     };

    88 

    89     QObjectDelegate(

    90         QObject *object, QScriptEngine::ValueOwnership ownership,

    91         const QScriptEngine::QObjectWrapOptions &options);

    92     ~QObjectDelegate();

    93 

    94     virtual Type type() const;

    95 

    96     virtual bool getOwnPropertySlot(QScriptObject*, JSC::ExecState*,

    97                                     const JSC::Identifier& propertyName,

    98                                     JSC::PropertySlot&);

    99     virtual void put(QScriptObject*, JSC::ExecState* exec,

   100                      const JSC::Identifier& propertyName,

   101                      JSC::JSValue, JSC::PutPropertySlot&);

   102     virtual bool deleteProperty(QScriptObject*, JSC::ExecState*,

   103                                 const JSC::Identifier& propertyName,

   104                                 bool checkDontDelete = true);

   105     virtual bool getPropertyAttributes(const QScriptObject*, JSC::ExecState*,

   106                                        const JSC::Identifier&,

   107                                        unsigned&) const;

   108     virtual void getOwnPropertyNames(QScriptObject*, JSC::ExecState*,

   109                                      JSC::PropertyNameArray&,

   110                                      bool includeNonEnumerable = false);

   111     virtual void markChildren(QScriptObject*, JSC::MarkStack& markStack);

   112     virtual bool compareToObject(QScriptObject*, JSC::ExecState*, JSC::JSObject*);

   113 

   114     inline QObject *value() const { return data->value; }

   115     inline void setValue(QObject* value) { data->value = value; }

   116 

   117     inline QScriptEngine::ValueOwnership ownership() const

   118         { return data->ownership; }

   119     inline void setOwnership(QScriptEngine::ValueOwnership ownership)

   120         { data->ownership = ownership; }

   121 

   122     inline QScriptEngine::QObjectWrapOptions options() const

   123         { return data->options; }

   124     inline void setOptions(QScriptEngine::QObjectWrapOptions options)

   125         { data->options = options; }

   126 

   127 protected:

   128     Data *data;

   129 };

   130 

   131 class QObjectPrototypeObject : public QObject

   132 {

   133     Q_OBJECT

   134 public:

   135     QObjectPrototypeObject(QObject *parent = 0)

   136         : QObject(parent) { }

   137     ~QObjectPrototypeObject() { }

   138 };

   139 

   140 class QObjectPrototype : public QScriptObject

   141 {

   142 public:

   143     QObjectPrototype(JSC::ExecState*, WTF::PassRefPtr<JSC::Structure>,

   144                      JSC::Structure* prototypeFunctionStructure);

   145 };

   146 

   147 class QObjectConnectionManager;

   148 

   149 struct QObjectWrapperInfo

   150 {

   151     QObjectWrapperInfo(QScriptObject *obj,

   152                        QScriptEngine::ValueOwnership own,

   153                        const QScriptEngine::QObjectWrapOptions &opt)

   154         : object(obj), ownership(own), options(opt) {}

   155 

   156     QScriptObject *object;

   157     QScriptEngine::ValueOwnership ownership;

   158     QScriptEngine::QObjectWrapOptions options;

   159 };

   160 

   161 class QObjectData // : public QObjectUserData

   162 {

   163 public:

   164     QObjectData(QScriptEnginePrivate *engine);

   165     ~QObjectData();

   166 

   167     bool addSignalHandler(QObject *sender,

   168                           int signalIndex,

   169                           JSC::JSValue receiver,

   170                           JSC::JSValue slot,

   171                           JSC::JSValue senderWrapper,

   172                           Qt::ConnectionType type);

   173     bool removeSignalHandler(QObject *sender,

   174                              int signalIndex,

   175                              JSC::JSValue receiver,

   176                              JSC::JSValue slot);

   177 

   178     QScriptObject *findWrapper(QScriptEngine::ValueOwnership ownership,

   179                                const QScriptEngine::QObjectWrapOptions &options) const;

   180     void registerWrapper(QScriptObject *wrapper,

   181                          QScriptEngine::ValueOwnership ownership,

   182                          const QScriptEngine::QObjectWrapOptions &options);

   183 

   184     void mark(JSC::MarkStack&);

   185 

   186 private:

   187     QScriptEnginePrivate *engine;

   188     QScript::QObjectConnectionManager *connectionManager;

   189     QList<QScript::QObjectWrapperInfo> wrappers;

   190 };

   191 

   192 class QtFunction: public JSC::InternalFunction

   193 {

   194 public:

   195     // work around CELL_SIZE limitation

   196     struct Data

   197     {

   198         JSC::JSValue object;

   199         int initialIndex;

   200         bool maybeOverloaded;

   201 

   202         Data(JSC::JSValue o, int ii, bool mo)

   203             : object(o), initialIndex(ii), maybeOverloaded(mo) {}

   204     };

   205 

   206     QtFunction(JSC::JSValue object, int initialIndex, bool maybeOverloaded,

   207                JSC::JSGlobalData*, WTF::PassRefPtr<JSC::Structure>, const JSC::Identifier&);

   208     virtual ~QtFunction();

   209 

   210     virtual JSC::CallType getCallData(JSC::CallData&);

   211     virtual void markChildren(JSC::MarkStack&);

   212 

   213     virtual const JSC::ClassInfo* classInfo() const { return &info; }

   214     static const JSC::ClassInfo info;

   215 

   216     static JSC::JSValue JSC_HOST_CALL call(JSC::ExecState*, JSC::JSObject*,

   217                                            JSC::JSValue, const JSC::ArgList&);

   218 

   219     JSC::JSValue execute(JSC::ExecState *exec, JSC::JSValue thisValue,

   220                          const JSC::ArgList &args);

   221 

   222     QScriptObject *wrapperObject() const;

   223     QObject *qobject() const;

   224     const QMetaObject *metaObject() const;

   225     int initialIndex() const;

   226     bool maybeOverloaded() const;

   227     int mostGeneralMethod(QMetaMethod *out = 0) const;

   228     QList<int> overloadedIndexes() const;

   229     QString functionName() const;

   230 

   231 private:

   232     Data *data;

   233 };

   234 

   235 class QtPropertyFunction: public JSC::InternalFunction

   236 {

   237 public:

   238     // work around CELL_SIZE limitation

   239     struct Data

   240     {

   241         const QMetaObject *meta;

   242         int index;

   243 

   244         Data(const QMetaObject *m, int i)

   245             : meta(m), index(i) {}

   246     };

   247 

   248     QtPropertyFunction(const QMetaObject *meta, int index,

   249                        JSC::JSGlobalData*, WTF::PassRefPtr<JSC::Structure>,

   250                        const JSC::Identifier&);

   251     virtual ~QtPropertyFunction();

   252 

   253     virtual JSC::CallType getCallData(JSC::CallData&);

   254 

   255     virtual const JSC::ClassInfo* classInfo() const { return &info; }

   256     static const JSC::ClassInfo info;

   257 

   258     static JSC::JSValue JSC_HOST_CALL call(JSC::ExecState*, JSC::JSObject*,

   259                                            JSC::JSValue, const JSC::ArgList&);

   260 

   261     JSC::JSValue execute(JSC::ExecState *exec, JSC::JSValue thisValue,

   262                          const JSC::ArgList &args);

   263 

   264     const QMetaObject *metaObject() const;

   265     int propertyIndex() const;

   266 

   267 private:

   268     Data *data;

   269 };

   270 

   271 class QMetaObjectWrapperObject : public JSC::JSObject

   272 {

   273 public:

   274     // work around CELL_SIZE limitation

   275     struct Data

   276     {

   277         const QMetaObject *value;

   278         JSC::JSValue ctor;

   279         JSC::JSValue prototype;

   280 

   281         Data(const QMetaObject *mo, JSC::JSValue c)

   282             : value(mo), ctor(c) {}

   283     };

   284 

   285     explicit QMetaObjectWrapperObject(

   286         JSC::ExecState *, const QMetaObject *metaobject, JSC::JSValue ctor,

   287         WTF::PassRefPtr<JSC::Structure> sid);

   288     ~QMetaObjectWrapperObject();

   289 

   290     virtual bool getOwnPropertySlot(JSC::ExecState*,

   291                                     const JSC::Identifier& propertyName,

   292                                     JSC::PropertySlot&);

   293     virtual void put(JSC::ExecState* exec, const JSC::Identifier& propertyName,

   294                      JSC::JSValue, JSC::PutPropertySlot&);

   295     virtual bool deleteProperty(JSC::ExecState*,

   296                                 const JSC::Identifier& propertyName,

   297                                 bool checkDontDelete = true);

   298     virtual bool getPropertyAttributes(JSC::ExecState*, const JSC::Identifier&,

   299                                        unsigned&) const;

   300     virtual void getOwnPropertyNames(JSC::ExecState*, JSC::PropertyNameArray&,

   301                                      bool includeNonEnumerable = false);

   302     virtual void markChildren(JSC::MarkStack& markStack);

   303 

   304     virtual JSC::CallType getCallData(JSC::CallData&);

   305     virtual JSC::ConstructType getConstructData(JSC::ConstructData&);

   306 

   307     virtual const JSC::ClassInfo* classInfo() const { return &info; }

   308     static const JSC::ClassInfo info;

   309 

   310     static JSC::JSValue JSC_HOST_CALL call(JSC::ExecState*, JSC::JSObject*,

   311                                            JSC::JSValue, const JSC::ArgList&);

   312     static JSC::JSObject* construct(JSC::ExecState *, JSC::JSObject *, const JSC::ArgList &);

   313 

   314     JSC::JSValue execute(JSC::ExecState *exec, const JSC::ArgList &args);

   315 

   316     inline const QMetaObject *value() const { return data->value; }

   317     inline void setValue(const QMetaObject* value) { data->value = value; }

   318 

   319     static WTF::PassRefPtr<JSC::Structure> createStructure(JSC::JSValue prototype)

   320     {

   321         return JSC::Structure::create(prototype, JSC::TypeInfo(JSC::ObjectType));

   322     }

   323 

   324 protected:

   325     Data *data;

   326 };

   327 

   328 class QMetaObjectPrototype : public QMetaObjectWrapperObject

   329 {

   330 public:

   331     QMetaObjectPrototype(JSC::ExecState*, WTF::PassRefPtr<JSC::Structure>,

   332                          JSC::Structure* prototypeFunctionStructure);

   333 };

   334 

   335 } // namespace QScript

   336 

   337 QT_END_NAMESPACE

   338 

   339 #endif