src/declarative/qml/qdeclarativevmemetaobject.cpp

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  24 ** Public License version 3.0 as published by the Free Software Foundation
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  41
  42 #include "private/qdeclarativevmemetaobject_p.h"
  43
  44 #include "qdeclarative.h"
  45 #include "private/qdeclarativerefcount_p.h"
  46 #include "qdeclarativeexpression.h"
  47 #include "private/qdeclarativeexpression_p.h"
  48 #include "private/qdeclarativecontext_p.h"
  49 #include "private/qdeclarativebinding_p.h"
  50
  51 Q_DECLARE_METATYPE(QScriptValue);
  52
  53 QT_BEGIN_NAMESPACE
  54
  55 class QDeclarativeVMEVariant
  56 {
  57 public:
  58     inline QDeclarativeVMEVariant();
  59     inline ~QDeclarativeVMEVariant();
  60
  61     inline const void *dataPtr() const;
  62     inline void *dataPtr();
  63     inline int dataType() const;
  64
  65     inline QObject *asQObject();
  66     inline const QVariant &asQVariant();
  67     inline int asInt();
  68     inline bool asBool();
  69     inline double asDouble();
  70     inline const QString &asQString();
  71     inline const QUrl &asQUrl();
  72     inline const QColor &asQColor();
  73     inline const QTime &asQTime();
  74     inline const QDate &asQDate();
  75     inline const QDateTime &asQDateTime();
  76     inline const QScriptValue &asQScriptValue();
  77
  78     inline void setValue(QObject *);
  79     inline void setValue(const QVariant &);
  80     inline void setValue(int);
  81     inline void setValue(bool);
  82     inline void setValue(double);
  83     inline void setValue(const QString &);
  84     inline void setValue(const QUrl &);
  85     inline void setValue(const QColor &);
  86     inline void setValue(const QTime &);
  87     inline void setValue(const QDate &);
  88     inline void setValue(const QDateTime &);
  89     inline void setValue(const QScriptValue &);
  90 private:
  91     int type;
  92     void *data[4]; // Large enough to hold all types
  93
  94     inline void cleanup();
  95 };
  96
  97 QDeclarativeVMEVariant::QDeclarativeVMEVariant()
  98 : type(QVariant::Invalid)
  99 {
 100 }
 101
 102 QDeclarativeVMEVariant::~QDeclarativeVMEVariant()
 103 {
 104     cleanup();
 105 }
 106
 107 void QDeclarativeVMEVariant::cleanup()
 108 {
 109     if (type == QVariant::Invalid) {
 110     } else if (type == QMetaType::Int ||
 111                type == QMetaType::Bool ||
 112                type == QMetaType::Double) {
 113         type = QVariant::Invalid;
 114     } else if (type == QMetaType::QObjectStar) {
 115         ((QDeclarativeGuard<QObject>*)dataPtr())->~QDeclarativeGuard<QObject>();
 116         type = QVariant::Invalid;
 117     } else if (type == QMetaType::QString) {
 118         ((QString *)dataPtr())->~QString();
 119         type = QVariant::Invalid;
 120     } else if (type == QMetaType::QUrl) {
 121         ((QUrl *)dataPtr())->~QUrl();
 122         type = QVariant::Invalid;
 123     } else if (type == QMetaType::QColor) {
 124         ((QColor *)dataPtr())->~QColor();
 125         type = QVariant::Invalid;
 126     } else if (type == QMetaType::QTime) {
 127         ((QTime *)dataPtr())->~QTime();
 128         type = QVariant::Invalid;
 129     } else if (type == QMetaType::QDate) {
 130         ((QDate *)dataPtr())->~QDate();
 131         type = QVariant::Invalid;
 132     } else if (type == QMetaType::QDateTime) {
 133         ((QDateTime *)dataPtr())->~QDateTime();
 134         type = QVariant::Invalid;
 135     } else if (type == qMetaTypeId<QVariant>()) {
 136         ((QVariant *)dataPtr())->~QVariant();
 137         type = QVariant::Invalid;
 138     } else if (type == qMetaTypeId<QScriptValue>()) {
 139         ((QScriptValue *)dataPtr())->~QScriptValue();
 140         type = QVariant::Invalid;
 141     }
 142
 143 }
 144
 145 int QDeclarativeVMEVariant::dataType() const
 146 {
 147     return type;
 148 }
 149
 150 const void *QDeclarativeVMEVariant::dataPtr() const
 151 {
 152     return &data;
 153 }
 154
 155 void *QDeclarativeVMEVariant::dataPtr()
 156 {
 157     return &data;
 158 }
 159
 160 QObject *QDeclarativeVMEVariant::asQObject()
 161 {
 162     if (type != QMetaType::QObjectStar)
 163         setValue((QObject *)0);
 164
 165     return *(QDeclarativeGuard<QObject> *)(dataPtr());
 166 }
 167
 168 const QVariant &QDeclarativeVMEVariant::asQVariant()
 169 {
 170     if (type != QMetaType::QVariant)
 171         setValue(QVariant());
 172
 173     return *(QVariant *)(dataPtr());
 174 }
 175
 176 int QDeclarativeVMEVariant::asInt()
 177 {
 178     if (type != QMetaType::Int)
 179         setValue(int(0));
 180
 181     return *(int *)(dataPtr());
 182 }
 183
 184 bool QDeclarativeVMEVariant::asBool()
 185 {
 186     if (type != QMetaType::Bool)
 187         setValue(bool(false));
 188
 189     return *(bool *)(dataPtr());
 190 }
 191
 192 double QDeclarativeVMEVariant::asDouble()
 193 {
 194     if (type != QMetaType::Double)
 195         setValue(double(0));
 196
 197     return *(double *)(dataPtr());
 198 }
 199
 200 const QString &QDeclarativeVMEVariant::asQString()
 201 {
 202     if (type != QMetaType::QString)
 203         setValue(QString());
 204
 205     return *(QString *)(dataPtr());
 206 }
 207
 208 const QUrl &QDeclarativeVMEVariant::asQUrl()
 209 {
 210     if (type != QMetaType::QUrl)
 211         setValue(QUrl());
 212
 213     return *(QUrl *)(dataPtr());
 214 }
 215
 216 const QColor &QDeclarativeVMEVariant::asQColor()
 217 {
 218     if (type != QMetaType::QColor)
 219         setValue(QColor());
 220
 221     return *(QColor *)(dataPtr());
 222 }
 223
 224 const QTime &QDeclarativeVMEVariant::asQTime()
 225 {
 226     if (type != QMetaType::QTime)
 227         setValue(QTime());
 228
 229     return *(QTime *)(dataPtr());
 230 }
 231
 232 const QDate &QDeclarativeVMEVariant::asQDate()
 233 {
 234     if (type != QMetaType::QDate)
 235         setValue(QDate());
 236
 237     return *(QDate *)(dataPtr());
 238 }
 239
 240 const QDateTime &QDeclarativeVMEVariant::asQDateTime()
 241 {
 242     if (type != QMetaType::QDateTime)
 243         setValue(QDateTime());
 244
 245     return *(QDateTime *)(dataPtr());
 246 }
 247
 248 const QScriptValue &QDeclarativeVMEVariant::asQScriptValue()
 249 {
 250     if (type != qMetaTypeId<QScriptValue>())
 251         setValue(QScriptValue());
 252
 253     return *(QScriptValue *)(dataPtr());
 254 }
 255
 256 void QDeclarativeVMEVariant::setValue(QObject *v)
 257 {
 258     if (type != QMetaType::QObjectStar) {
 259         cleanup();
 260         type = QMetaType::QObjectStar;
 261         new (dataPtr()) QDeclarativeGuard<QObject>();
 262     }
 263     *(QDeclarativeGuard<QObject>*)(dataPtr()) = v;
 264 }
 265
 266 void QDeclarativeVMEVariant::setValue(const QVariant &v)
 267 {
 268     if (type != qMetaTypeId<QVariant>()) {
 269         cleanup();
 270         type = qMetaTypeId<QVariant>();
 271         new (dataPtr()) QVariant(v);
 272     } else {
 273         *(QVariant *)(dataPtr()) = v;
 274     }
 275 }
 276
 277 void QDeclarativeVMEVariant::setValue(int v)
 278 {
 279     if (type != QMetaType::Int) {
 280         cleanup();
 281         type = QMetaType::Int;
 282     }
 283     *(int *)(dataPtr()) = v;
 284 }
 285
 286 void QDeclarativeVMEVariant::setValue(bool v)
 287 {
 288     if (type != QMetaType::Bool) {
 289         cleanup();
 290         type = QMetaType::Bool;
 291     }
 292     *(bool *)(dataPtr()) = v;
 293 }
 294
 295 void QDeclarativeVMEVariant::setValue(double v)
 296 {
 297     if (type != QMetaType::Double) {
 298         cleanup();
 299         type = QMetaType::Double;
 300     }
 301     *(double *)(dataPtr()) = v;
 302 }
 303
 304 void QDeclarativeVMEVariant::setValue(const QString &v)
 305 {
 306     if (type != QMetaType::QString) {
 307         cleanup();
 308         type = QMetaType::QString;
 309         new (dataPtr()) QString(v);
 310     } else {
 311         *(QString *)(dataPtr()) = v;
 312     }
 313 }
 314
 315 void QDeclarativeVMEVariant::setValue(const QUrl &v)
 316 {
 317     if (type != QMetaType::QUrl) {
 318         cleanup();
 319         type = QMetaType::QUrl;
 320         new (dataPtr()) QUrl(v);
 321     } else {
 322         *(QUrl *)(dataPtr()) = v;
 323     }
 324 }
 325
 326 void QDeclarativeVMEVariant::setValue(const QColor &v)
 327 {
 328     if (type != QMetaType::QColor) {
 329         cleanup();
 330         type = QMetaType::QColor;
 331         new (dataPtr()) QColor(v);
 332     } else {
 333         *(QColor *)(dataPtr()) = v;
 334     }
 335 }
 336
 337 void QDeclarativeVMEVariant::setValue(const QTime &v)
 338 {
 339     if (type != QMetaType::QTime) {
 340         cleanup();
 341         type = QMetaType::QTime;
 342         new (dataPtr()) QTime(v);
 343     } else {
 344         *(QTime *)(dataPtr()) = v;
 345     }
 346 }
 347
 348 void QDeclarativeVMEVariant::setValue(const QDate &v)
 349 {
 350     if (type != QMetaType::QDate) {
 351         cleanup();
 352         type = QMetaType::QDate;
 353         new (dataPtr()) QDate(v);
 354     } else {
 355         *(QDate *)(dataPtr()) = v;
 356     }
 357 }
 358
 359 void QDeclarativeVMEVariant::setValue(const QDateTime &v)
 360 {
 361     if (type != QMetaType::QDateTime) {
 362         cleanup();
 363         type = QMetaType::QDateTime;
 364         new (dataPtr()) QDateTime(v);
 365     } else {
 366         *(QDateTime *)(dataPtr()) = v;
 367     }
 368 }
 369
 370 void QDeclarativeVMEVariant::setValue(const QScriptValue &v)
 371 {
 372     if (type != qMetaTypeId<QScriptValue>()) {
 373         cleanup();
 374         type = qMetaTypeId<QScriptValue>();
 375         new (dataPtr()) QScriptValue(v);
 376     } else {
 377         *(QScriptValue *)(dataPtr()) = v;
 378     }
 379 }
 380
 381 QDeclarativeVMEMetaObject::QDeclarativeVMEMetaObject(QObject *obj,
 382                                                      const QMetaObject *other,
 383                                                      const QDeclarativeVMEMetaData *meta,
 384                                                      QDeclarativeCompiledData *cdata)
 385 : object(obj), compiledData(cdata), ctxt(QDeclarativeData::get(obj, true)->outerContext),
 386   metaData(meta), data(0), methods(0), parent(0)
 387 {
 388     compiledData->addref();
 389
 390     *static_cast<QMetaObject *>(this) = *other;
 391     this->d.superdata = obj->metaObject();
 392
 393     QObjectPrivate *op = QObjectPrivate::get(obj);
 394     if (op->metaObject)
 395         parent = static_cast<QAbstractDynamicMetaObject*>(op->metaObject);
 396     op->metaObject = this;
 397
 398     propOffset = QAbstractDynamicMetaObject::propertyOffset();
 399     methodOffset = QAbstractDynamicMetaObject::methodOffset();
 400
 401     data = new QDeclarativeVMEVariant[metaData->propertyCount];
 402
 403     aConnected.resize(metaData->aliasCount);
 404     int list_type = qMetaTypeId<QDeclarativeListProperty<QObject> >();
 405
 406     // ### Optimize
 407     for (int ii = 0; ii < metaData->propertyCount; ++ii) {
 408         int t = (metaData->propertyData() + ii)->propertyType;
 409         if (t == list_type) {
 410             listProperties.append(List(methodOffset + ii));
 411             data[ii].setValue(listProperties.count() - 1);
 412         }
 413     }
 414 }
 415
 416 QDeclarativeVMEMetaObject::~QDeclarativeVMEMetaObject()
 417 {
 418     compiledData->release();
 419     delete parent;
 420     delete [] data;
 421     delete [] methods;
 422 }
 423
 424 int QDeclarativeVMEMetaObject::metaCall(QMetaObject::Call c, int _id, void **a)
 425 {
 426     int id = _id;
 427     if(c == QMetaObject::WriteProperty) {
 428         int flags = *reinterpret_cast<int*>(a[3]);
 429         if (!(flags & QDeclarativePropertyPrivate::BypassInterceptor)
 430             && !aInterceptors.isEmpty()
 431             && aInterceptors.testBit(id)) {
 432             QPair<int, QDeclarativePropertyValueInterceptor*> pair = interceptors.value(id);
 433             int valueIndex = pair.first;
 434             QDeclarativePropertyValueInterceptor *vi = pair.second;
 435             int type = property(id).userType();
 436
 437             if (type != QVariant::Invalid) {
 438                 if (valueIndex != -1) {
 439                     QDeclarativeEnginePrivate *ep = ctxt?QDeclarativeEnginePrivate::get(ctxt->engine):0;
 440                     QDeclarativeValueType *valueType = 0;
 441                     if (ep) valueType = ep->valueTypes[type];
 442                     else valueType = QDeclarativeValueTypeFactory::valueType(type);
 443                     Q_ASSERT(valueType);
 444
 445                     valueType->setValue(QVariant(type, a[0]));
 446                     QMetaProperty valueProp = valueType->metaObject()->property(valueIndex);
 447                     vi->write(valueProp.read(valueType));
 448
 449                     if (!ep) delete valueType;
 450                     return -1;
 451                 } else {
 452                     vi->write(QVariant(type, a[0]));
 453                     return -1;
 454                 }
 455             }
 456         }
 457     }
 458     if(c == QMetaObject::ReadProperty || c == QMetaObject::WriteProperty) {
 459         if (id >= propOffset) {
 460             id -= propOffset;
 461
 462             if (id < metaData->propertyCount) {
 463                int t = (metaData->propertyData() + id)->propertyType;
 464                 bool needActivate = false;
 465
 466                 if (t == -1) {
 467
 468                     if (c == QMetaObject::ReadProperty) {
 469                         *reinterpret_cast<QVariant *>(a[0]) = readVarPropertyAsVariant(id);
 470                     } else if (c == QMetaObject::WriteProperty) {
 471                         writeVarProperty(id, *reinterpret_cast<QVariant *>(a[0]));
 472                     }
 473
 474                 } else {
 475
 476                     if (c == QMetaObject::ReadProperty) {
 477                         switch(t) {
 478                         case QVariant::Int:
 479                             *reinterpret_cast<int *>(a[0]) = data[id].asInt();
 480                             break;
 481                         case QVariant::Bool:
 482                             *reinterpret_cast<bool *>(a[0]) = data[id].asBool();
 483                             break;
 484                         case QVariant::Double:
 485                             *reinterpret_cast<double *>(a[0]) = data[id].asDouble();
 486                             break;
 487                         case QVariant::String:
 488                             *reinterpret_cast<QString *>(a[0]) = data[id].asQString();
 489                             break;
 490                         case QVariant::Url:
 491                             *reinterpret_cast<QUrl *>(a[0]) = data[id].asQUrl();
 492                             break;
 493                         case QVariant::Color:
 494                             *reinterpret_cast<QColor *>(a[0]) = data[id].asQColor();
 495                             break;
 496                         case QVariant::Date:
 497                             *reinterpret_cast<QDate *>(a[0]) = data[id].asQDate();
 498                             break;
 499                         case QVariant::DateTime:
 500                             *reinterpret_cast<QDateTime *>(a[0]) = data[id].asQDateTime();
 501                             break;
 502                         case QMetaType::QObjectStar:
 503                             *reinterpret_cast<QObject **>(a[0]) = data[id].asQObject();
 504                             break;
 505                         default:
 506                             break;
 507                         }
 508                         if (t == qMetaTypeId<QDeclarativeListProperty<QObject> >()) {
 509                             int listIndex = data[id].asInt();
 510                             const List *list = &listProperties.at(listIndex);
 511                             *reinterpret_cast<QDeclarativeListProperty<QObject> *>(a[0]) =
 512                                 QDeclarativeListProperty<QObject>(object, (void *)list,
 513                                                                   list_append, list_count, list_at,
 514                                                                   list_clear);
 515                         }
 516
 517                     } else if (c == QMetaObject::WriteProperty) {
 518
 519                         switch(t) {
 520                         case QVariant::Int:
 521                             needActivate = *reinterpret_cast<int *>(a[0]) != data[id].asInt();
 522                             data[id].setValue(*reinterpret_cast<int *>(a[0]));
 523                             break;
 524                         case QVariant::Bool:
 525                             needActivate = *reinterpret_cast<bool *>(a[0]) != data[id].asBool();
 526                             data[id].setValue(*reinterpret_cast<bool *>(a[0]));
 527                             break;
 528                         case QVariant::Double:
 529                             needActivate = *reinterpret_cast<double *>(a[0]) != data[id].asDouble();
 530                             data[id].setValue(*reinterpret_cast<double *>(a[0]));
 531                             break;
 532                         case QVariant::String:
 533                             needActivate = *reinterpret_cast<QString *>(a[0]) != data[id].asQString();
 534                             data[id].setValue(*reinterpret_cast<QString *>(a[0]));
 535                             break;
 536                         case QVariant::Url:
 537                             needActivate = *reinterpret_cast<QUrl *>(a[0]) != data[id].asQUrl();
 538                             data[id].setValue(*reinterpret_cast<QUrl *>(a[0]));
 539                             break;
 540                         case QVariant::Color:
 541                             needActivate = *reinterpret_cast<QColor *>(a[0]) != data[id].asQColor();
 542                             data[id].setValue(*reinterpret_cast<QColor *>(a[0]));
 543                             break;
 544                         case QVariant::Date:
 545                             needActivate = *reinterpret_cast<QDate *>(a[0]) != data[id].asQDate();
 546                             data[id].setValue(*reinterpret_cast<QDate *>(a[0]));
 547                             break;
 548                         case QVariant::DateTime:
 549                             needActivate = *reinterpret_cast<QDateTime *>(a[0]) != data[id].asQDateTime();
 550                             data[id].setValue(*reinterpret_cast<QDateTime *>(a[0]));
 551                             break;
 552                         case QMetaType::QObjectStar:
 553                             needActivate = *reinterpret_cast<QObject **>(a[0]) != data[id].asQObject();
 554                             data[id].setValue(*reinterpret_cast<QObject **>(a[0]));
 555                             break;
 556                         default:
 557                             break;
 558                         }
 559                     }
 560
 561                 }
 562
 563                 if (c == QMetaObject::WriteProperty && needActivate) {
 564                     activate(object, methodOffset + id, 0);
 565                 }
 566
 567                 return -1;
 568             }
 569
 570             id -= metaData->propertyCount;
 571
 572             if (id < metaData->aliasCount) {
 573
 574                 QDeclarativeVMEMetaData::AliasData *d = metaData->aliasData() + id;
 575
 576                 if (d->flags & QML_ALIAS_FLAG_PTR && c == QMetaObject::ReadProperty)
 577                         *reinterpret_cast<void **>(a[0]) = 0;
 578
 579                 if (!ctxt) return -1;
 580
 581                 QDeclarativeContext *context = ctxt->asQDeclarativeContext();
 582                 QDeclarativeContextPrivate *ctxtPriv = QDeclarativeContextPrivate::get(context);
 583
 584                 QObject *target = ctxtPriv->data->idValues[d->contextIdx].data();
 585                 if (!target)
 586                     return -1;
 587
 588                 connectAlias(id);
 589
 590                 if (d->isObjectAlias()) {
 591                     *reinterpret_cast<QObject **>(a[0]) = target;
 592                     return -1;
 593                 }
 594
 595                 // Remove binding (if any) on write
 596                 if(c == QMetaObject::WriteProperty) {
 597                     int flags = *reinterpret_cast<int*>(a[3]);
 598                     if (flags & QDeclarativePropertyPrivate::RemoveBindingOnAliasWrite) {
 599                         QDeclarativeData *targetData = QDeclarativeData::get(target);
 600                         if (targetData && targetData->hasBindingBit(d->propertyIndex())) {
 601                             QDeclarativeAbstractBinding *binding = QDeclarativePropertyPrivate::setBinding(target, d->propertyIndex(), d->isValueTypeAlias()?d->valueTypeIndex():-1, 0);
 602                             if (binding) binding->destroy();
 603                         }
 604                     }
 605                 }
 606
 607                 if (d->isValueTypeAlias()) {
 608                     // Value type property
 609                     QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(ctxt->engine);
 610
 611                     QDeclarativeValueType *valueType = ep->valueTypes[d->valueType()];
 612                     Q_ASSERT(valueType);
 613
 614                     valueType->read(target, d->propertyIndex());
 615                     int rv = QMetaObject::metacall(valueType, c, d->valueTypeIndex(), a);
 616
 617                     if (c == QMetaObject::WriteProperty)
 618                         valueType->write(target, d->propertyIndex(), 0x00);
 619
 620                     return rv;
 621
 622                 } else {
 623                     return QMetaObject::metacall(target, c, d->propertyIndex(), a);
 624                 }
 625
 626             }
 627             return -1;
 628
 629         }
 630
 631     } else if(c == QMetaObject::InvokeMetaMethod) {
 632
 633         if (id >= methodOffset) {
 634
 635             id -= methodOffset;
 636             int plainSignals = metaData->signalCount + metaData->propertyCount +
 637                                metaData->aliasCount;
 638             if (id < plainSignals) {
 639                 QMetaObject::activate(object, _id, a);
 640                 return -1;
 641             }
 642
 643             id -= plainSignals;
 644
 645             if (id < metaData->methodCount) {
 646                 if (!ctxt->engine)
 647                     return -1; // We can't run the method
 648
 649                 QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(ctxt->engine);
 650                 ep->referenceScarceResources(); // "hold" scarce resources in memory during evaluation.
 651
 652                 QScriptValue function = method(id);
 653
 654                 QScriptValueList args;
 655                 QDeclarativeVMEMetaData::MethodData *data = metaData->methodData() + id;
 656                 if (data->parameterCount) {
 657                     for (int ii = 0; ii < data->parameterCount; ++ii) {
 658                         args << ep->scriptValueFromVariant(*(QVariant *)a[ii + 1]);
 659                     }
 660                 }
 661
 662                 QScriptValue rv = function.call(ep->objectClass->newQObject(object), args);
 663                 if (ep->scriptEngine.hasUncaughtException()) {
 664                     QDeclarativeError error;
 665                     QDeclarativeExpressionPrivate::exceptionToError(&ep->scriptEngine, error);
 666                     if (error.isValid()) {
 667                         ep->warning(error);
 668                     }
 669                 }
 670
 671                 if (a[0]) *reinterpret_cast<QVariant *>(a[0]) = ep->scriptValueToVariant(rv);
 672
 673                 ep->dereferenceScarceResources(); // "release" scarce resources if top-level expression evaluation is complete.
 674                 return -1;
 675             }
 676             return -1;
 677         }
 678     }
 679
 680     if (parent)
 681         return parent->metaCall(c, _id, a);
 682     else
 683         return object->qt_metacall(c, _id, a);
 684 }
 685
 686 QScriptValue QDeclarativeVMEMetaObject::method(int index)
 687 {
 688     if (!methods)
 689         methods = new QScriptValue[metaData->methodCount];
 690
 691     if (!methods[index].isValid()) {
 692         QDeclarativeVMEMetaData::MethodData *data = metaData->methodData() + index;
 693
 694         const QChar *body =
 695             (const QChar *)(((const char*)metaData) + data->bodyOffset);
 696
 697         QString code = QString::fromRawData(body, data->bodyLength);
 698
 699         // XXX Use QScriptProgram
 700         // XXX We should evaluate all methods in a single big script block to
 701         // improve the call time between dynamic methods defined on the same
 702         // object
 703         methods[index] = QDeclarativeExpressionPrivate::evalInObjectScope(ctxt, object, code, ctxt->url.toString(),
 704                                                                           data->lineNumber, 0);
 705     }
 706
 707     return methods[index];
 708 }
 709
 710 QScriptValue QDeclarativeVMEMetaObject::readVarProperty(int id)
 711 {
 712     if (data[id].dataType() == qMetaTypeId<QScriptValue>())
 713         return data[id].asQScriptValue();
 714     else if (data[id].dataType() == QMetaType::QObjectStar)
 715         return QDeclarativeEnginePrivate::get(ctxt->engine)->objectClass->newQObject(data[id].asQObject());
 716     else
 717         return QDeclarativeEnginePrivate::get(ctxt->engine)->scriptValueFromVariant(data[id].asQVariant());
 718 }
 719
 720 QVariant QDeclarativeVMEMetaObject::readVarPropertyAsVariant(int id)
 721 {
 722     if (data[id].dataType() == qMetaTypeId<QScriptValue>())
 723         return QDeclarativeEnginePrivate::get(ctxt->engine)->scriptValueToVariant(data[id].asQScriptValue());
 724     else if (data[id].dataType() == QMetaType::QObjectStar)
 725         return QVariant::fromValue(data[id].asQObject());
 726     else
 727         return data[id].asQVariant();
 728 }
 729
 730 void QDeclarativeVMEMetaObject::writeVarProperty(int id, const QScriptValue &value)
 731 {
 732     data[id].setValue(value);
 733     activate(object, methodOffset + id, 0);
 734 }
 735
 736 void QDeclarativeVMEMetaObject::writeVarProperty(int id, const QVariant &value)
 737 {
 738     bool needActivate = false;
 739     if (value.userType() == QMetaType::QObjectStar) {
 740         QObject *o = qvariant_cast<QObject *>(value);
 741         needActivate = (data[id].dataType() != QMetaType::QObjectStar || data[id].asQObject() != o);
 742         data[id].setValue(qvariant_cast<QObject *>(value));
 743     } else {
 744         needActivate = (data[id].dataType() != qMetaTypeId<QVariant>() ||
 745                         data[id].asQVariant().userType() != value.userType() ||
 746                         data[id].asQVariant() != value);
 747         data[id].setValue(value);
 748     }
 749     if (needActivate)
 750         activate(object, methodOffset + id, 0);
 751 }
 752
 753 void QDeclarativeVMEMetaObject::listChanged(int id)
 754 {
 755     activate(object, methodOffset + id, 0);
 756 }
 757
 758 void QDeclarativeVMEMetaObject::list_append(QDeclarativeListProperty<QObject> *prop, QObject *o)
 759 {
 760     List *list = static_cast<List *>(prop->data);
 761     list->append(o);
 762     QMetaObject::activate(prop->object, list->notifyIndex, 0);
 763 }
 764
 765 int QDeclarativeVMEMetaObject::list_count(QDeclarativeListProperty<QObject> *prop)
 766 {
 767     return static_cast<List *>(prop->data)->count();
 768 }
 769
 770 QObject *QDeclarativeVMEMetaObject::list_at(QDeclarativeListProperty<QObject> *prop, int index)
 771 {
 772     return static_cast<List *>(prop->data)->at(index);
 773 }
 774
 775 void QDeclarativeVMEMetaObject::list_clear(QDeclarativeListProperty<QObject> *prop)
 776 {
 777     List *list = static_cast<List *>(prop->data);
 778     list->clear();
 779     QMetaObject::activate(prop->object, list->notifyIndex, 0);
 780 }
 781
 782 void QDeclarativeVMEMetaObject::registerInterceptor(int index, int valueIndex, QDeclarativePropertyValueInterceptor *interceptor)
 783 {
 784     if (aInterceptors.isEmpty())
 785         aInterceptors.resize(propertyCount() + metaData->propertyCount);
 786     aInterceptors.setBit(index);
 787     interceptors.insert(index, qMakePair(valueIndex, interceptor));
 788 }
 789
 790 int QDeclarativeVMEMetaObject::vmeMethodLineNumber(int index)
 791 {
 792     if (index < methodOffset) {
 793         Q_ASSERT(parent);
 794         return static_cast<QDeclarativeVMEMetaObject *>(parent)->vmeMethodLineNumber(index);
 795     }
 796
 797     int plainSignals = metaData->signalCount + metaData->propertyCount + metaData->aliasCount;
 798     Q_ASSERT(index >= (methodOffset + plainSignals) && index < (methodOffset + plainSignals + metaData->methodCount));
 799
 800     int rawIndex = index - methodOffset - plainSignals;
 801
 802     QDeclarativeVMEMetaData::MethodData *data = metaData->methodData() + rawIndex;
 803     return data->lineNumber;
 804 }
 805
 806 QScriptValue QDeclarativeVMEMetaObject::vmeMethod(int index)
 807 {
 808     if (index < methodOffset) {
 809         Q_ASSERT(parent);
 810         return static_cast<QDeclarativeVMEMetaObject *>(parent)->vmeMethod(index);
 811     }
 812     int plainSignals = metaData->signalCount + metaData->propertyCount + metaData->aliasCount;
 813     Q_ASSERT(index >= (methodOffset + plainSignals) && index < (methodOffset + plainSignals + metaData->methodCount));
 814     return method(index - methodOffset - plainSignals);
 815 }
 816
 817 void QDeclarativeVMEMetaObject::setVmeMethod(int index, const QScriptValue &value)
 818 {
 819     if (index < methodOffset) {
 820         Q_ASSERT(parent);
 821         return static_cast<QDeclarativeVMEMetaObject *>(parent)->setVmeMethod(index, value);
 822     }
 823     int plainSignals = metaData->signalCount + metaData->propertyCount + metaData->aliasCount;
 824     Q_ASSERT(index >= (methodOffset + plainSignals) && index < (methodOffset + plainSignals + metaData->methodCount));
 825
 826     if (!methods)
 827         methods = new QScriptValue[metaData->methodCount];
 828     methods[index - methodOffset - plainSignals] = value;
 829 }
 830
 831 QScriptValue QDeclarativeVMEMetaObject::vmeProperty(int index)
 832 {
 833     if (index < propOffset) {
 834         Q_ASSERT(parent);
 835         return static_cast<QDeclarativeVMEMetaObject *>(parent)->vmeProperty(index);
 836     }
 837     return readVarProperty(index - propOffset);
 838 }
 839
 840 void QDeclarativeVMEMetaObject::setVMEProperty(int index, const QScriptValue &v)
 841 {
 842     if (index < propOffset) {
 843         Q_ASSERT(parent);
 844         static_cast<QDeclarativeVMEMetaObject *>(parent)->setVMEProperty(index, v);
 845     }
 846     return writeVarProperty(index - propOffset, v);
 847 }
 848
 849 bool QDeclarativeVMEMetaObject::aliasTarget(int index, QObject **target, int *coreIndex, int *valueTypeIndex) const
 850 {
 851     Q_ASSERT(index >= propOffset + metaData->propertyCount);
 852
 853     *target = 0;
 854     *coreIndex = -1;
 855     *valueTypeIndex = -1;
 856
 857     if (!ctxt)
 858         return false;
 859
 860     QDeclarativeVMEMetaData::AliasData *d = metaData->aliasData() + (index - propOffset - metaData->propertyCount);
 861     QDeclarativeContext *context = ctxt->asQDeclarativeContext();
 862     QDeclarativeContextPrivate *ctxtPriv = QDeclarativeContextPrivate::get(context);
 863
 864     *target = ctxtPriv->data->idValues[d->contextIdx].data();
 865     if (!*target)
 866         return false;
 867
 868     if (d->isObjectAlias()) {
 869     } else if (d->isValueTypeAlias()) {
 870         *coreIndex = d->propertyIndex();
 871         *valueTypeIndex = d->valueTypeIndex();
 872     } else {
 873         *coreIndex = d->propertyIndex();
 874     }
 875
 876     return true;
 877 }
 878
 879 void QDeclarativeVMEMetaObject::connectAlias(int aliasId)
 880 {
 881     if (!aConnected.testBit(aliasId)) {
 882         aConnected.setBit(aliasId);
 883
 884         QDeclarativeContext *context = ctxt->asQDeclarativeContext();
 885         QDeclarativeContextPrivate *ctxtPriv = QDeclarativeContextPrivate::get(context);
 886
 887         QDeclarativeVMEMetaData::AliasData *d = metaData->aliasData() + aliasId;
 888
 889         QObject *target = ctxtPriv->data->idValues[d->contextIdx].data();
 890         if (!target)
 891             return;
 892
 893         int sigIdx = methodOffset + aliasId + metaData->propertyCount;
 894         QMetaObject::connect(context, d->contextIdx + ctxtPriv->notifyIndex, object, sigIdx);
 895
 896         if (!d->isObjectAlias()) {
 897             QMetaProperty prop = target->metaObject()->property(d->propertyIndex());
 898             if (prop.hasNotifySignal())
 899                 QDeclarativePropertyPrivate::connect(target, prop.notifySignalIndex(), object, sigIdx);
 900         }
 901     }
 902 }
 903
 904 void QDeclarativeVMEMetaObject::connectAliasSignal(int index)
 905 {
 906     int aliasId = (index - methodOffset) - metaData->propertyCount;
 907     if (aliasId < 0 || aliasId >= metaData->aliasCount)
 908         return;
 909
 910     connectAlias(aliasId);
 911 }
 912
 913 QT_END_NAMESPACE