summaryrefslogtreecommitdiffstats
path: root/tools/qmlplugindump/main.cpp
blob: b4cf2da3ff8e2a427fa1b3886ad0abcde23ad4a8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the tools applications 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.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include <QtDeclarative/QtDeclarative>
#include <QtDeclarative/private/qdeclarativemetatype_p.h>
#include <QtDeclarative/private/qdeclarativeopenmetaobject_p.h>
#include <QtDeclarative/private/qquickevents_p_p.h>
#include <QtDeclarative/private/qquickpincharea_p.h>

#include <QtWidgets/QApplication>

#include <QtCore/QSet>
#include <QtCore/QMetaObject>
#include <QtCore/QMetaProperty>
#include <QtCore/QDebug>
#include <QtCore/private/qobject_p.h>
#include <QtCore/private/qmetaobject_p.h>

#include <iostream>

#include "qmlstreamwriter.h"

#ifdef QT_SIMULATOR
#include <QtGui/private/qsimulatorconnection_p.h>
#endif

#ifdef Q_OS_UNIX
#include <signal.h>
#endif

QString pluginImportPath;
bool verbose = false;

QString currentProperty;
QString inObjectInstantiation;

void collectReachableMetaObjects(const QMetaObject *meta, QSet<const QMetaObject *> *metas)
{
    if (! meta || metas->contains(meta))
        return;

    // dynamic meta objects break things badly, so just ignore them
    const QMetaObjectPrivate *mop = reinterpret_cast<const QMetaObjectPrivate *>(meta->d.data);
    if (!(mop->flags & DynamicMetaObject))
        metas->insert(meta);

    collectReachableMetaObjects(meta->superClass(), metas);
}

void collectReachableMetaObjects(QObject *object, QSet<const QMetaObject *> *metas)
{
    if (! object)
        return;

    const QMetaObject *meta = object->metaObject();
    if (verbose)
        qDebug() << "Processing object" << meta->className();
    collectReachableMetaObjects(meta, metas);

    for (int index = 0; index < meta->propertyCount(); ++index) {
        QMetaProperty prop = meta->property(index);
        if (QDeclarativeMetaType::isQObject(prop.userType())) {
            if (verbose)
                qDebug() << "  Processing property" << prop.name();
            currentProperty = QString("%1::%2").arg(meta->className(), prop.name());

            // if the property was not initialized during construction,
            // accessing a member of oo is going to cause a segmentation fault
            QObject *oo = QDeclarativeMetaType::toQObject(prop.read(object));
            if (oo && !metas->contains(oo->metaObject()))
                collectReachableMetaObjects(oo, metas);
            currentProperty.clear();
        }
    }
}

void collectReachableMetaObjects(const QDeclarativeType *ty, QSet<const QMetaObject *> *metas)
{
    collectReachableMetaObjects(ty->metaObject(), metas);
    if (ty->attachedPropertiesType())
        collectReachableMetaObjects(ty->attachedPropertiesType(), metas);
}

/* We want to add the MetaObject for 'Qt' to the list, this is a
   simple way to access it.
*/
class FriendlyQObject: public QObject
{
public:
    static const QMetaObject *qtMeta() { return &staticQtMetaObject; }
};

/* When we dump a QMetaObject, we want to list all the types it is exported as.
   To do this, we need to find the QDeclarativeTypes associated with this
   QMetaObject.
*/
static QHash<QByteArray, QSet<const QDeclarativeType *> > qmlTypesByCppName;

static QHash<QByteArray, QByteArray> cppToId;

/* Takes a C++ type name, such as Qt::LayoutDirection or QString and
   maps it to how it should appear in the description file.

   These names need to be unique globally, so we don't change the C++ symbol's
   name much. It is mostly used to for explicit translations such as
   QString->string and translations for extended QML objects.
*/
QByteArray convertToId(const QByteArray &cppName)
{
    return cppToId.value(cppName, cppName);
}

QSet<const QMetaObject *> collectReachableMetaObjects(const QList<QDeclarativeType *> &skip = QList<QDeclarativeType *>())
{
    QSet<const QMetaObject *> metas;
    metas.insert(FriendlyQObject::qtMeta());

    QHash<QByteArray, QSet<QByteArray> > extensions;
    foreach (const QDeclarativeType *ty, QDeclarativeMetaType::qmlTypes()) {
        qmlTypesByCppName[ty->metaObject()->className()].insert(ty);
        if (ty->isExtendedType()) {
            extensions[ty->typeName()].insert(ty->metaObject()->className());
        }
        collectReachableMetaObjects(ty, &metas);
    }

    // Adjust exports of the base object if there are extensions.
    // For each export of a base object there can be a single extension object overriding it.
    // Example: QDeclarativeGraphicsWidget overrides the QtQuick/QGraphicsWidget export
    //          of QGraphicsWidget.
    foreach (const QByteArray &baseCpp, extensions.keys()) {
        QSet<const QDeclarativeType *> baseExports = qmlTypesByCppName.value(baseCpp);

        const QSet<QByteArray> extensionCppNames = extensions.value(baseCpp);
        foreach (const QByteArray &extensionCppName, extensionCppNames) {
            const QSet<const QDeclarativeType *> extensionExports = qmlTypesByCppName.value(extensionCppName);

            // remove extension exports from base imports
            // unfortunately the QDeclarativeType pointers don't match, so can't use QSet::substract
            QSet<const QDeclarativeType *> newBaseExports;
            foreach (const QDeclarativeType *baseExport, baseExports) {
                bool match = false;
                foreach (const QDeclarativeType *extensionExport, extensionExports) {
                    if (baseExport->qmlTypeName() == extensionExport->qmlTypeName()
                            && baseExport->majorVersion() == extensionExport->majorVersion()
                            && baseExport->minorVersion() == extensionExport->minorVersion()) {
                        match = true;
                        break;
                    }
                }
                if (!match)
                    newBaseExports.insert(baseExport);
            }
            baseExports = newBaseExports;
        }
        qmlTypesByCppName[baseCpp] = baseExports;
    }

    // find even more QMetaObjects by instantiating QML types and running
    // over the instances
    foreach (QDeclarativeType *ty, QDeclarativeMetaType::qmlTypes()) {
        if (skip.contains(ty))
            continue;
        if (ty->isExtendedType())
            continue;
        if (!ty->isCreatable())
            continue;
        if (ty->typeName() == "QDeclarativeComponent")
            continue;

        QString tyName = ty->qmlTypeName();
        tyName = tyName.mid(tyName.lastIndexOf(QLatin1Char('/')) + 1);
        if (tyName.isEmpty())
            continue;

        inObjectInstantiation = tyName;
        QObject *object = ty->create();
        inObjectInstantiation.clear();

        if (object)
            collectReachableMetaObjects(object, &metas);
        else
            qWarning() << "Could not create" << tyName;
    }

    return metas;
}


class Dumper
{
    QmlStreamWriter *qml;
    QString relocatableModuleUri;

public:
    Dumper(QmlStreamWriter *qml) : qml(qml) {}

    void setRelocatableModuleUri(const QString &uri)
    {
        relocatableModuleUri = uri;
    }

    void dump(const QMetaObject *meta)
    {
        qml->writeStartObject("Component");

        QByteArray id = convertToId(meta->className());
        qml->writeScriptBinding(QLatin1String("name"), enquote(id));

        for (int index = meta->classInfoCount() - 1 ; index >= 0 ; --index) {
            QMetaClassInfo classInfo = meta->classInfo(index);
            if (QLatin1String(classInfo.name()) == QLatin1String("DefaultProperty")) {
                qml->writeScriptBinding(QLatin1String("defaultProperty"), enquote(QLatin1String(classInfo.value())));
                break;
            }
        }

        if (meta->superClass())
            qml->writeScriptBinding(QLatin1String("prototype"), enquote(convertToId(meta->superClass()->className())));

        QSet<const QDeclarativeType *> qmlTypes = qmlTypesByCppName.value(meta->className());
        if (!qmlTypes.isEmpty()) {
            QHash<QString, const QDeclarativeType *> exports;

            foreach (const QDeclarativeType *qmlTy, qmlTypes) {
                QString qmlTyName = qmlTy->qmlTypeName();
                if (qmlTyName.startsWith(relocatableModuleUri + QLatin1Char('/'))) {
                    qmlTyName.remove(0, relocatableModuleUri.size() + 1);
                }
                if (qmlTyName.startsWith("./")) {
                    qmlTyName.remove(0, 2);
                }
                if (qmlTyName.startsWith("/")) {
                    qmlTyName.remove(0, 1);
                }
                const QString exportString = enquote(
                            QString("%1 %2.%3").arg(
                                qmlTyName,
                                QString::number(qmlTy->majorVersion()),
                                QString::number(qmlTy->minorVersion())));
                exports.insert(exportString, qmlTy);
            }

            // ensure exports are sorted and don't change order when the plugin is dumped again
            QStringList exportStrings = exports.keys();
            qSort(exportStrings);
            qml->writeArrayBinding(QLatin1String("exports"), exportStrings);

            // write meta object revisions unless they're all zero
            QStringList metaObjectRevisions;
            bool shouldWriteMetaObjectRevisions = false;
            foreach (const QString &exportString, exportStrings) {
                int metaObjectRevision = exports[exportString]->metaObjectRevision();
                if (metaObjectRevision != 0)
                    shouldWriteMetaObjectRevisions = true;
                metaObjectRevisions += QString::number(metaObjectRevision);
            }
            if (shouldWriteMetaObjectRevisions)
                qml->writeArrayBinding(QLatin1String("exportMetaObjectRevisions"), metaObjectRevisions);

            if (const QMetaObject *attachedType = (*qmlTypes.begin())->attachedPropertiesType()) {
                qml->writeScriptBinding(QLatin1String("attachedType"), enquote(
                                            convertToId(attachedType->className())));
            }
        }

        for (int index = meta->enumeratorOffset(); index < meta->enumeratorCount(); ++index)
            dump(meta->enumerator(index));

        QSet<QString> implicitSignals;
        for (int index = meta->propertyOffset(); index < meta->propertyCount(); ++index) {
            const QMetaProperty &property = meta->property(index);
            dump(property);
            implicitSignals.insert(QString("%1Changed").arg(QString::fromUtf8(property.name())));
        }

        for (int index = meta->methodOffset(); index < meta->methodCount(); ++index)
            dump(meta->method(index), implicitSignals);

        qml->writeEndObject();
    }

    void writeEasingCurve()
    {
        qml->writeStartObject("Component");
        qml->writeScriptBinding(QLatin1String("name"), enquote(QLatin1String("QEasingCurve")));
        qml->writeScriptBinding(QLatin1String("prototype"), enquote(QLatin1String("QDeclarativeEasingValueType")));
        qml->writeEndObject();
    }

private:
    static QString enquote(const QString &string)
    {
        return QString("\"%1\"").arg(string);
    }

    /* Removes pointer and list annotations from a type name, returning
       what was removed in isList and isPointer
    */
    static void removePointerAndList(QByteArray *typeName, bool *isList, bool *isPointer)
    {
        static QByteArray declListPrefix = "QDeclarativeListProperty<";

        if (typeName->endsWith('*')) {
            *isPointer = true;
            typeName->truncate(typeName->length() - 1);
            removePointerAndList(typeName, isList, isPointer);
        } else if (typeName->startsWith(declListPrefix)) {
            *isList = true;
            typeName->truncate(typeName->length() - 1); // get rid of the suffix '>'
            *typeName = typeName->mid(declListPrefix.size());
            removePointerAndList(typeName, isList, isPointer);
        }

        *typeName = convertToId(*typeName);
    }

    void writeTypeProperties(QByteArray typeName, bool isWritable)
    {
        bool isList = false, isPointer = false;
        removePointerAndList(&typeName, &isList, &isPointer);

        qml->writeScriptBinding(QLatin1String("type"), enquote(typeName));
        if (isList)
            qml->writeScriptBinding(QLatin1String("isList"), QLatin1String("true"));
        if (!isWritable)
            qml->writeScriptBinding(QLatin1String("isReadonly"), QLatin1String("true"));
        if (isPointer)
            qml->writeScriptBinding(QLatin1String("isPointer"), QLatin1String("true"));
    }

    void dump(const QMetaProperty &prop)
    {
        qml->writeStartObject("Property");

        qml->writeScriptBinding(QLatin1String("name"), enquote(QString::fromUtf8(prop.name())));
#if (QT_VERSION >= QT_VERSION_CHECK(4, 7, 4))
        if (int revision = prop.revision())
            qml->writeScriptBinding(QLatin1String("revision"), QString::number(revision));
#endif
        writeTypeProperties(prop.typeName(), prop.isWritable());

        qml->writeEndObject();
    }

    void dump(const QMetaMethod &meth, const QSet<QString> &implicitSignals)
    {
        if (meth.methodType() == QMetaMethod::Signal) {
            if (meth.access() != QMetaMethod::Protected)
                return; // nothing to do.
        } else if (meth.access() != QMetaMethod::Public) {
            return; // nothing to do.
        }

        QByteArray name = meth.signature();
        int lparenIndex = name.indexOf('(');
        if (lparenIndex == -1) {
            return; // invalid signature
        }
        name = name.left(lparenIndex);
        const QString typeName = convertToId(meth.typeName());

        if (implicitSignals.contains(name)
                && !meth.revision()
                && meth.methodType() == QMetaMethod::Signal
                && meth.parameterNames().isEmpty()
                && typeName.isEmpty()) {
            // don't mention implicit signals
            return;
        }

        if (meth.methodType() == QMetaMethod::Signal)
            qml->writeStartObject(QLatin1String("Signal"));
        else
            qml->writeStartObject(QLatin1String("Method"));

        qml->writeScriptBinding(QLatin1String("name"), enquote(name));

#if (QT_VERSION >= QT_VERSION_CHECK(4, 7, 4))
        if (int revision = meth.revision())
            qml->writeScriptBinding(QLatin1String("revision"), QString::number(revision));
#endif

        if (! typeName.isEmpty())
            qml->writeScriptBinding(QLatin1String("type"), enquote(typeName));

        for (int i = 0; i < meth.parameterTypes().size(); ++i) {
            QByteArray argName = meth.parameterNames().at(i);

            qml->writeStartObject(QLatin1String("Parameter"));
            if (! argName.isEmpty())
                qml->writeScriptBinding(QLatin1String("name"), enquote(argName));
            writeTypeProperties(meth.parameterTypes().at(i), true);
            qml->writeEndObject();
        }

        qml->writeEndObject();
    }

    void dump(const QMetaEnum &e)
    {
        qml->writeStartObject(QLatin1String("Enum"));
        qml->writeScriptBinding(QLatin1String("name"), enquote(QString::fromUtf8(e.name())));

        QList<QPair<QString, QString> > namesValues;
        for (int index = 0; index < e.keyCount(); ++index) {
            namesValues.append(qMakePair(enquote(QString::fromUtf8(e.key(index))), QString::number(e.value(index))));
        }

        qml->writeScriptObjectLiteralBinding(QLatin1String("values"), namesValues);
        qml->writeEndObject();
    }
};


enum ExitCode {
    EXIT_INVALIDARGUMENTS = 1,
    EXIT_SEGV = 2,
    EXIT_IMPORTERROR = 3
};

#ifdef Q_OS_UNIX
void sigSegvHandler(int) {
    fprintf(stderr, "Error: SEGV\n");
    if (!currentProperty.isEmpty())
        fprintf(stderr, "While processing the property '%s', which probably has uninitialized data.\n", currentProperty.toLatin1().constData());
    if (!inObjectInstantiation.isEmpty())
        fprintf(stderr, "While instantiating the object '%s'.\n", inObjectInstantiation.toLatin1().constData());
    exit(EXIT_SEGV);
}
#endif

void printUsage(const QString &appName)
{
    qWarning() << qPrintable(QString(
                                 "Usage: %1 [-v] [-notrelocatable] module.uri version [module/import/path]\n"
                                 "       %1 [-v] -path path/to/qmldir/directory [version]\n"
                                 "       %1 [-v] -builtins\n"
                                 "Example: %1 Qt.labs.particles 4.7 /home/user/dev/qt-install/imports").arg(
                                 appName));
}

int main(int argc, char *argv[])
{
#ifdef Q_OS_UNIX
    // qmldump may crash, but we don't want any crash handlers to pop up
    // therefore we intercept the segfault and just exit() ourselves
    struct sigaction sigAction;

    sigemptyset(&sigAction.sa_mask);
    sigAction.sa_handler = &sigSegvHandler;
    sigAction.sa_flags   = 0;

    sigaction(SIGSEGV, &sigAction, 0);
#endif

#ifdef QT_SIMULATOR
    // Running this application would bring up the Qt Simulator (since it links QtGui), avoid that!
    QtSimulatorPrivate::SimulatorConnection::createStubInstance();
#endif
    QApplication app(argc, argv);
    const QStringList args = app.arguments();
    const QString appName = QFileInfo(app.applicationFilePath()).baseName();
    if (args.size() < 2) {
        printUsage(appName);
        return EXIT_INVALIDARGUMENTS;
    }

    QString pluginImportUri;
    QString pluginImportVersion;
    bool relocatable = true;
    enum Action { Uri, Path, Builtins };
    Action action = Uri;
    {
        QStringList positionalArgs;
        foreach (const QString &arg, args) {
            if (!arg.startsWith(QLatin1Char('-'))) {
                positionalArgs.append(arg);
                continue;
            }

            if (arg == QLatin1String("--notrelocatable")
                    || arg == QLatin1String("-notrelocatable")) {
                relocatable = false;
            } else if (arg == QLatin1String("--path")
                       || arg == QLatin1String("-path")) {
                action = Path;
            } else if (arg == QLatin1String("--builtins")
                       || arg == QLatin1String("-builtins")) {
                action = Builtins;
            } else if (arg == QLatin1String("-v")) {
                verbose = true;
            } else {
                qWarning() << "Invalid argument: " << arg;
                return EXIT_INVALIDARGUMENTS;
            }
        }

        if (action == Uri) {
            if (positionalArgs.size() != 3 && positionalArgs.size() != 4) {
                qWarning() << "Incorrect number of positional arguments";
                return EXIT_INVALIDARGUMENTS;
            }
            pluginImportUri = positionalArgs[1];
            pluginImportVersion = positionalArgs[2];
            if (positionalArgs.size() >= 4)
                pluginImportPath = positionalArgs[3];
        } else if (action == Path) {
            if (positionalArgs.size() != 2 && positionalArgs.size() != 3) {
                qWarning() << "Incorrect number of positional arguments";
                return EXIT_INVALIDARGUMENTS;
            }
            pluginImportPath = QDir::fromNativeSeparators(positionalArgs[1]);
            if (positionalArgs.size() == 3)
                pluginImportVersion = positionalArgs[2];
        } else if (action == Builtins) {
            if (positionalArgs.size() != 1) {
                qWarning() << "Incorrect number of positional arguments";
                return EXIT_INVALIDARGUMENTS;
            }
        }
    }

    QDeclarativeEngine engine;
    if (!pluginImportPath.isEmpty()) {
        QDir cur = QDir::current();
        cur.cd(pluginImportPath);
        pluginImportPath = cur.absolutePath();
        QDir::setCurrent(pluginImportPath);
        engine.addImportPath(pluginImportPath);
    }

    // load the QtQuick 1 plugin
    {
        QByteArray code("import QtQuick 1.0\nQtObject {}");
        QDeclarativeComponent c(&engine);
        c.setData(code, QUrl::fromLocalFile(pluginImportPath + "/loadqtquick1.qml"));
        c.create();
        if (!c.errors().isEmpty()) {
            foreach (const QDeclarativeError &error, c.errors())
                qWarning() << error.toString();
            return EXIT_IMPORTERROR;
        }
    }

    // find all QMetaObjects reachable from the builtin module
    QSet<const QMetaObject *> defaultReachable = collectReachableMetaObjects();
    QList<QDeclarativeType *> defaultTypes = QDeclarativeMetaType::qmlTypes();

    // add some otherwise unreachable QMetaObjects
    defaultReachable.insert(&QQuickMouseEvent::staticMetaObject);
    // QQuickKeyEvent, QQuickPinchEvent, QQuickDropEvent are not exported

    // this will hold the meta objects we want to dump information of
    QSet<const QMetaObject *> metas;

    if (action == Builtins) {
        metas = defaultReachable;
    } else {
        // find a valid QtQuick import
        QByteArray importCode;
        QDeclarativeType *qtObjectType = QDeclarativeMetaType::qmlType(&QObject::staticMetaObject);
        if (!qtObjectType) {
            qWarning() << "Could not find QtObject type";
            importCode = QByteArray("import QtQuick 2.0\n");
        } else {
            QString module = qtObjectType->qmlTypeName();
            module = module.mid(0, module.lastIndexOf(QLatin1Char('/')));
            importCode = QString("import %1 %2.%3\n").arg(module,
                                                          QString::number(qtObjectType->majorVersion()),
                                                          QString::number(qtObjectType->minorVersion())).toUtf8();
        }

        // find all QMetaObjects reachable when the specified module is imported
        if (action != Path) {
            importCode += QString("import %0 %1\n").arg(pluginImportUri, pluginImportVersion).toAscii();
        } else {
            // pluginImportVersion can be empty
            importCode += QString("import \".\" %2\n").arg(pluginImportVersion).toAscii();
        }

        // create a component with these imports to make sure the imports are valid
        // and to populate the declarative meta type system
        {
            QByteArray code = importCode;
            code += "QtObject {}";
            QDeclarativeComponent c(&engine);

            c.setData(code, QUrl::fromLocalFile(pluginImportPath + "/typelist.qml"));
            c.create();
            if (!c.errors().isEmpty()) {
                foreach (const QDeclarativeError &error, c.errors())
                    qWarning() << error.toString();
                return EXIT_IMPORTERROR;
            }
        }

        QSet<const QMetaObject *> candidates = collectReachableMetaObjects(defaultTypes);
        candidates.subtract(defaultReachable);

        // Also eliminate meta objects with the same classname.
        // This is required because extended objects seem not to share
        // a single meta object instance.
        QSet<QByteArray> defaultReachableNames;
        foreach (const QMetaObject *mo, defaultReachable)
            defaultReachableNames.insert(QByteArray(mo->className()));
        foreach (const QMetaObject *mo, candidates) {
            if (!defaultReachableNames.contains(mo->className()))
                metas.insert(mo);
        }
    }

    // setup static rewrites of type names
    cppToId.insert("QString", "string");
    cppToId.insert("QDeclarativeEasingValueType::Type", "Type");

    // start dumping data
    QByteArray bytes;
    QmlStreamWriter qml(&bytes);

    qml.writeStartDocument();
    qml.writeLibraryImport(QLatin1String("QtQuick.tooling"), 1, 1);
    qml.write("\n"
              "// This file describes the plugin-supplied types contained in the library.\n"
              "// It is used for QML tooling purposes only.\n"
              "\n");
    qml.writeStartObject("Module");

    // put the metaobjects into a map so they are always dumped in the same order
    QMap<QString, const QMetaObject *> nameToMeta;
    foreach (const QMetaObject *meta, metas)
        nameToMeta.insert(convertToId(meta->className()), meta);

    Dumper dumper(&qml);
    if (relocatable)
        dumper.setRelocatableModuleUri(pluginImportUri);
    foreach (const QMetaObject *meta, nameToMeta) {
        dumper.dump(meta);
    }

    // define QEasingCurve as an extension of QDeclarativeEasingValueType, this way
    // properties using the QEasingCurve type get useful type information.
    if (pluginImportUri.isEmpty())
        dumper.writeEasingCurve();

    qml.writeEndObject();
    qml.writeEndDocument();

    std::cout << bytes.constData();

    // workaround to avoid crashes on exit
    QTimer timer;
    timer.setSingleShot(true);
    timer.setInterval(0);
    QObject::connect(&timer, SIGNAL(timeout()), &app, SLOT(quit()));
    timer.start();

    return app.exec();
}