summaryrefslogtreecommitdiff
path: root/src/libs/qmljs/qmljslink.cpp
blob: b5e4da86f3e296c40c7e3fe5e1d882c90d5ca215 (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
/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company.  For licensing terms and
** conditions see http://www.qt.io/terms-conditions.  For further information
** use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file.  Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, The Qt Company gives you certain additional
** rights.  These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/

#include "qmljslink.h"

#include "parser/qmljsast_p.h"
#include "qmljsdocument.h"
#include "qmljsbind.h"
#include "qmljsutils.h"
#include "qmljsmodelmanagerinterface.h"
#include "qmljsqrcparser.h"
#include "qmljsconstants.h"

#include <QDir>

using namespace LanguageUtils;
using namespace QmlJS;
using namespace QmlJS::AST;

namespace {
class ImportCacheKey
{
public:
    explicit ImportCacheKey(const ImportInfo &info)
        : type(info.type())
        , path(info.path())
        , majorVersion(info.version().majorVersion())
        , minorVersion(info.version().minorVersion())
    {}

    int type;
    QString path;
    int majorVersion;
    int minorVersion;
};

uint qHash(const ImportCacheKey &info)
{
    return ::qHash(info.type) ^ ::qHash(info.path) ^
            ::qHash(info.majorVersion) ^ ::qHash(info.minorVersion);
}

bool operator==(const ImportCacheKey &i1, const ImportCacheKey &i2)
{
    return i1.type == i2.type
            && i1.path == i2.path
            && i1.majorVersion == i2.majorVersion
            && i1.minorVersion == i2.minorVersion;
}
}


class QmlJS::LinkPrivate
{
public:
    Snapshot snapshot;
    ValueOwner *valueOwner;
    QStringList importPaths;
    LibraryInfo builtins;
    ViewerContext vContext;

    QHash<ImportCacheKey, Import> importCache;

    QHash<QString, QList<ModuleApiInfo> > importableModuleApis;

    Document::Ptr document;
    QList<DiagnosticMessage> *diagnosticMessages;

    QHash<QString, QList<DiagnosticMessage> > *allDiagnosticMessages;

    Context::ImportsPerDocument linkImports();

    void populateImportedTypes(Imports *imports, Document::Ptr doc);
    Import importFileOrDirectory(
        Document::Ptr doc,
        const ImportInfo &importInfo);
    Import importNonFile(
        Document::Ptr doc,
        const ImportInfo &importInfo);
    void importObject(Bind *bind, const QString &name, ObjectValue *object, NameId *targetNamespace);

    bool importLibrary(Document::Ptr doc,
                       const QString &libraryPath,
                       Import *import,
                       const QString &importPath = QString());
    void loadQmldirComponents(ObjectValue *import,
                              LanguageUtils::ComponentVersion version,
                              const LibraryInfo &libraryInfo,
                              const QString &libraryPath);
    void loadImplicitDirectoryImports(Imports *imports, Document::Ptr doc);
    void loadImplicitDefaultImports(Imports *imports);

    void error(const Document::Ptr &doc, const AST::SourceLocation &loc, const QString &message);
    void warning(const Document::Ptr &doc, const AST::SourceLocation &loc, const QString &message);
    void appendDiagnostic(const Document::Ptr &doc, const DiagnosticMessage &message);
};

/*!
    \class QmlJS::Link
    \brief The Link class creates a Context for a Snapshot.
    \sa Context Snapshot

    Initializes a context by resolving imports. This is an expensive operation.

    Instead of making a fresh context, consider reusing the one maintained in the
    \l{QmlJSEditor::SemanticInfo} of a \l{QmlJSEditor::QmlJSEditorDocument}.
*/

Link::Link(const Snapshot &snapshot, const ViewerContext &vContext, const LibraryInfo &builtins)
    : d(new LinkPrivate)
{
    d->valueOwner = new ValueOwner;
    d->snapshot = snapshot;
    d->importPaths = vContext.paths;
    d->builtins = builtins;
    d->vContext = vContext;

    d->diagnosticMessages = 0;
    d->allDiagnosticMessages = 0;

    ModelManagerInterface *modelManager = ModelManagerInterface::instance();
    if (modelManager) {
        ModelManagerInterface::CppDataHash cppDataHash = modelManager->cppData();
        {
            // populate engine with types from C++
            ModelManagerInterface::CppDataHashIterator cppDataHashIterator(cppDataHash);
            while (cppDataHashIterator.hasNext()) {
                cppDataHashIterator.next();
                d->valueOwner->cppQmlTypes().load(cppDataHashIterator.key(),
                                                  cppDataHashIterator.value().exportedTypes);
            }
        }

        // build an object with the context properties from C++
        ObjectValue *cppContextProperties = d->valueOwner->newObject(/* prototype = */ 0);
        foreach (const ModelManagerInterface::CppData &cppData, cppDataHash) {
            QHashIterator<QString, QString> it(cppData.contextProperties);
            while (it.hasNext()) {
                it.next();
                const Value *value = 0;
                const QString cppTypeName = it.value();
                if (!cppTypeName.isEmpty())
                    value = d->valueOwner->cppQmlTypes().objectByCppName(cppTypeName);
                if (!value)
                    value = d->valueOwner->unknownValue();
                cppContextProperties->setMember(it.key(), value);
            }
        }
        d->valueOwner->cppQmlTypes().setCppContextProperties(cppContextProperties);
    }
}

ContextPtr Link::operator()(QHash<QString, QList<DiagnosticMessage> > *messages)
{
    d->allDiagnosticMessages = messages;
    return Context::create(d->snapshot, d->valueOwner, d->linkImports(), d->vContext);
}

ContextPtr Link::operator()(const Document::Ptr &doc, QList<DiagnosticMessage> *messages)
{
    d->document = doc;
    d->diagnosticMessages = messages;
    return Context::create(d->snapshot, d->valueOwner, d->linkImports(), d->vContext);
}

Link::~Link()
{
    delete d;
}

Context::ImportsPerDocument LinkPrivate::linkImports()
{
    Context::ImportsPerDocument importsPerDocument;

    // load builtin objects
    if (builtins.pluginTypeInfoStatus() == LibraryInfo::DumpDone
            || builtins.pluginTypeInfoStatus() == LibraryInfo::TypeInfoFileDone) {
        valueOwner->cppQmlTypes().load(QLatin1String("<builtins>"), builtins.metaObjects());
    } else {
        valueOwner->cppQmlTypes().load(QLatin1String("<defaults>"), CppQmlTypesLoader::defaultQtObjects);
    }

    // load library objects shipped with Creator
    valueOwner->cppQmlTypes().load(QLatin1String("<defaultQt4>"), CppQmlTypesLoader::defaultLibraryObjects);

    if (document) {
        // do it on document first, to make sure import errors are shown
        Imports *imports = new Imports(valueOwner);
        populateImportedTypes(imports, document);
        importsPerDocument.insert(document.data(), QSharedPointer<Imports>(imports));
    }

    foreach (Document::Ptr doc, snapshot) {
        if (doc == document)
            continue;

        Imports *imports = new Imports(valueOwner);
        populateImportedTypes(imports, doc);
        importsPerDocument.insert(doc.data(), QSharedPointer<Imports>(imports));
    }

    return importsPerDocument;
}

void LinkPrivate::populateImportedTypes(Imports *imports, Document::Ptr doc)
{
    importableModuleApis.clear();

    // implicit imports: the <default> package is always available
    loadImplicitDefaultImports(imports);

    // implicit imports:
    // qml files in the same directory are available without explicit imports
    if (doc->isQmlDocument())
        loadImplicitDirectoryImports(imports, doc);

    // explicit imports, whether directories, files or libraries
    foreach (const ImportInfo &info, doc->bind()->imports()) {
        Import import = importCache.value(ImportCacheKey(info));

        // ensure usage of the right ImportInfo, the cached import
        // can have a different 'as' clause...
        import.info = info;

        if (!import.object) {
            switch (info.type()) {
            case ImportType::File:
            case ImportType::Directory:
            case ImportType::QrcFile:
            case ImportType::QrcDirectory:
                import = importFileOrDirectory(doc, info);
                break;
            case ImportType::Library:
                import = importNonFile(doc, info);
                break;
            case ImportType::UnknownFile:
                imports->setImportFailed();
                if (info.ast()) {
                    error(doc, info.ast()->fileNameToken,
                          Link::tr("file or directory not found"));
                }
                break;
            default:
                break;
            }
            if (import.object)
                importCache.insert(ImportCacheKey(info), import);
        }
        if (import.object)
            imports->append(import);
    }
}

/*
    import "content"
    import "content" as Xxx
    import "content" 4.6
    import "content" 4.6 as Xxx

    import "http://www.ovi.com/" as Ovi

    import "file.js" as Foo
*/
Import LinkPrivate::importFileOrDirectory(Document::Ptr doc, const ImportInfo &importInfo)
{
    Import import;
    import.info = importInfo;
    import.object = 0;
    import.valid = true;

    QString path = importInfo.path();

    if (importInfo.type() == ImportType::Directory
            || importInfo.type() == ImportType::ImplicitDirectory) {
        import.object = new ObjectValue(valueOwner);

        importLibrary(doc, path, &import);

        const QList<Document::Ptr> &documentsInDirectory = snapshot.documentsInDirectory(path);
        foreach (Document::Ptr importedDoc, documentsInDirectory) {
            if (importedDoc->bind()->rootObjectValue()) {
                const QString targetName = importedDoc->componentName();
                import.object->setMember(targetName, importedDoc->bind()->rootObjectValue());
            }
        }
    } else if (importInfo.type() == ImportType::File) {
        Document::Ptr importedDoc = snapshot.document(path);
        if (importedDoc)
            import.object = importedDoc->bind()->rootObjectValue();
    } else if (importInfo.type() == ImportType::QrcFile) {
        QLocale locale;
        QStringList filePaths = ModelManagerInterface::instance()
                ->filesAtQrcPath(path, &locale, 0, ModelManagerInterface::ActiveQrcResources);
        if (filePaths.isEmpty())
            filePaths = ModelManagerInterface::instance()->filesAtQrcPath(path);
        if (!filePaths.isEmpty()) {
            Document::Ptr importedDoc = snapshot.document(filePaths.at(0));
            if (importedDoc)
                import.object = importedDoc->bind()->rootObjectValue();
        }
    } else if (importInfo.type() == ImportType::QrcDirectory){
        import.object = new ObjectValue(valueOwner);

        importLibrary(doc, path, &import);

        QMapIterator<QString,QStringList> iter(ModelManagerInterface::instance()
                                               ->filesInQrcPath(path));
        while (iter.hasNext()) {
            iter.next();
            if (ModelManagerInterface::guessLanguageOfFile(iter.key()).isQmlLikeLanguage()) {
                Document::Ptr importedDoc = snapshot.document(iter.value().at(0));
                if (importedDoc && importedDoc->bind()->rootObjectValue()) {
                    const QString targetName = QFileInfo(iter.key()).baseName();
                    import.object->setMember(targetName, importedDoc->bind()->rootObjectValue());
                }
            }
        }
    }
    return import;
}

static ModuleApiInfo findBestModuleApi(const QList<ModuleApiInfo> &apis, const ComponentVersion &version)
{
    ModuleApiInfo best;
    foreach (const ModuleApiInfo &moduleApi, apis) {
        if (moduleApi.version <= version
                && (!best.version.isValid() || best.version < moduleApi.version)) {
            best = moduleApi;
        }
    }
    return best;
}

/*
  import Qt 4.6
  import Qt 4.6 as Xxx
  (import com.nokia.qt is the same as the ones above)
*/
Import LinkPrivate::importNonFile(Document::Ptr doc, const ImportInfo &importInfo)
{
    Import import;
    import.info = importInfo;
    import.object = new ObjectValue(valueOwner);
    import.valid = true;

    const QString packageName = importInfo.name();
    const ComponentVersion version = importInfo.version();

    bool importFound = false;

    const QString &packagePath = importInfo.path();
    // check the filesystem with full version
    foreach (const QString &importPath, importPaths) {
        QString libraryPath = QString::fromLatin1("%1/%2.%3").arg(importPath, packagePath, version.toString());
        if (importLibrary(doc, libraryPath, &import, importPath)) {
            importFound = true;
            break;
        }
    }
    if (!importFound) {
        // check the filesystem with major version
        foreach (const QString &importPath, importPaths) {
            QString libraryPath = QString::fromLatin1("%1/%2.%3").arg(importPath, packagePath,
                                                          QString::number(version.majorVersion()));
            if (importLibrary(doc, libraryPath, &import, importPath)) {
                importFound = true;
                break;
            }
        }
    }
    if (!importFound) {
        // check the filesystem with no version
        foreach (const QString &importPath, importPaths) {
            QString libraryPath = QString::fromLatin1("%1/%2").arg(importPath, packagePath);
            if (importLibrary(doc, libraryPath, &import, importPath)) {
                importFound = true;
                break;
            }
        }
    }

    // if there are cpp-based types for this package, use them too
    if (valueOwner->cppQmlTypes().hasModule(packageName)) {
        importFound = true;
        foreach (const CppComponentValue *object,
                 valueOwner->cppQmlTypes().createObjectsForImport(packageName, version)) {
            import.object->setMember(object->className(), object);
        }
    }

    // check module apis that previous imports may have enabled
    ModuleApiInfo moduleApi = findBestModuleApi(importableModuleApis.value(packageName), version);
    if (moduleApi.version.isValid()) {
        importFound = true;
        import.object->setPrototype(valueOwner->cppQmlTypes().objectByCppName(moduleApi.cppName));
    }

    if (!importFound && importInfo.ast()) {
        import.valid = false;
        error(doc, locationFromRange(importInfo.ast()->firstSourceLocation(),
                                     importInfo.ast()->lastSourceLocation()),
              Link::tr(
                  "QML module not found\n\n"
                  "Import paths:\n"
                  "%1\n\n"
                  "For qmake projects, use the QML_IMPORT_PATH variable to add import paths.\n"
                  "For qmlproject projects, use the importPaths property to add import paths.").arg(
                  importPaths.join(QLatin1Char('\n'))));
    }

    return import;
}

bool LinkPrivate::importLibrary(Document::Ptr doc,
                         const QString &libraryPath_,
                         Import *import,
                         const QString &importPath)
{
    const ImportInfo &importInfo = import->info;
    QString libraryPath = libraryPath_;

    LibraryInfo libraryInfo = snapshot.libraryInfo(libraryPath);
    if (!libraryInfo.isValid()) {
        // try canonical path
        libraryPath = QFileInfo(libraryPath).canonicalFilePath();
        libraryInfo = snapshot.libraryInfo(libraryPath);
        if (!libraryInfo.isValid())
            return false;
    }

    import->libraryPath = libraryPath;

    const ComponentVersion version = importInfo.version();
    SourceLocation errorLoc;
    if (const UiImport *ast = importInfo.ast())
        errorLoc = locationFromRange(ast->firstSourceLocation(), ast->lastSourceLocation());

    if (!libraryInfo.plugins().isEmpty()) {
        if (libraryInfo.pluginTypeInfoStatus() == LibraryInfo::NoTypeInfo) {
            ModelManagerInterface *modelManager = ModelManagerInterface::instance();
            if (modelManager) {
                if (importInfo.type() == ImportType::Library) {
                    if (version.isValid()) {
                        const QString uri = importInfo.name();
                        modelManager->loadPluginTypes(
                                    libraryPath, importPath,
                                    uri, version.toString());
                    }
                } else {
                    modelManager->loadPluginTypes(
                                libraryPath, libraryPath,
                                QString(), version.toString());
                }
            }
            if (errorLoc.isValid()) {
                warning(doc, errorLoc,
                        Link::tr("QML module contains C++ plugins, currently reading type information..."));
                import->valid = false;
            }
        } else if (libraryInfo.pluginTypeInfoStatus() == LibraryInfo::DumpError
                   || libraryInfo.pluginTypeInfoStatus() == LibraryInfo::TypeInfoFileError) {
            // Only underline import if package isn't described in .qmltypes anyway
            // and is not a private package
            QString packageName = importInfo.name();
            if (errorLoc.isValid() && (packageName.isEmpty() || !valueOwner->cppQmlTypes().hasModule(packageName))
                    && !packageName.endsWith(QLatin1String("private"), Qt::CaseInsensitive)) {
                error(doc, errorLoc, libraryInfo.pluginTypeInfoError());
                import->valid = false;
            }
        } else {
            const QString packageName = importInfo.name();
            valueOwner->cppQmlTypes().load(libraryPath, libraryInfo.metaObjects(), packageName);
            foreach (const CppComponentValue *object, valueOwner->cppQmlTypes().createObjectsForImport(packageName, version)) {
                import->object->setMember(object->className(), object);
            }

            // all but no-uri module apis become available for import
            QList<ModuleApiInfo> noUriModuleApis;
            foreach (const ModuleApiInfo &moduleApi, libraryInfo.moduleApis()) {
                if (moduleApi.uri.isEmpty())
                    noUriModuleApis += moduleApi;
                else
                    importableModuleApis[moduleApi.uri] += moduleApi;
            }

            // if a module api has no uri, it shares the same name
            ModuleApiInfo sameUriModuleApi = findBestModuleApi(noUriModuleApis, version);
            if (sameUriModuleApi.version.isValid())
                import->object->setPrototype(valueOwner->cppQmlTypes().objectByCppName(sameUriModuleApi.cppName));
        }
    }

    loadQmldirComponents(import->object, version, libraryInfo, libraryPath);

    return true;
}

void LinkPrivate::error(const Document::Ptr &doc, const AST::SourceLocation &loc, const QString &message)
{
    appendDiagnostic(doc, DiagnosticMessage(Severity::Error, loc, message));
}

void LinkPrivate::warning(const Document::Ptr &doc, const AST::SourceLocation &loc, const QString &message)
{
    appendDiagnostic(doc, DiagnosticMessage(Severity::Warning, loc, message));
}

void LinkPrivate::appendDiagnostic(const Document::Ptr &doc, const DiagnosticMessage &message)
{
    if (diagnosticMessages && doc->fileName() == document->fileName())
        diagnosticMessages->append(message);
    if (allDiagnosticMessages)
        (*allDiagnosticMessages)[doc->fileName()].append(message);
}

void LinkPrivate::loadQmldirComponents(ObjectValue *import, ComponentVersion version,
                                const LibraryInfo &libraryInfo, const QString &libraryPath)
{
    // if the version isn't valid, import the latest
    if (!version.isValid())
        version = ComponentVersion(ComponentVersion::MaxVersion, ComponentVersion::MaxVersion);


    QSet<QString> importedTypes;
    foreach (const QmlDirParser::Component &component, libraryInfo.components()) {
        if (importedTypes.contains(component.typeName))
            continue;

        ComponentVersion componentVersion(component.majorVersion,
                                          component.minorVersion);
        if (version < componentVersion)
            continue;

        importedTypes.insert(component.typeName);
        if (Document::Ptr importedDoc = snapshot.document(
                    libraryPath + QLatin1Char('/') + component.fileName)) {
            if (ObjectValue *v = importedDoc->bind()->rootObjectValue())
                import->setMember(component.typeName, v);
        }
    }
}

void LinkPrivate::loadImplicitDirectoryImports(Imports *imports, Document::Ptr doc)
{
    ImportInfo implcitDirectoryImportInfo = ImportInfo::implicitDirectoryImport(doc->path());

    Import directoryImport = importCache.value(ImportCacheKey(implcitDirectoryImportInfo));
    if (!directoryImport.object) {
        directoryImport = importFileOrDirectory(doc, implcitDirectoryImportInfo);
        if (directoryImport.object)
            importCache.insert(ImportCacheKey(implcitDirectoryImportInfo), directoryImport);
    }
    if (directoryImport.object)
        imports->append(directoryImport);
}

void LinkPrivate::loadImplicitDefaultImports(Imports *imports)
{
    const QString defaultPackage = CppQmlTypes::defaultPackage;
    if (valueOwner->cppQmlTypes().hasModule(defaultPackage)) {
        const ComponentVersion maxVersion(ComponentVersion::MaxVersion, ComponentVersion::MaxVersion);
        const ImportInfo info = ImportInfo::moduleImport(defaultPackage, maxVersion, QString());
        Import import = importCache.value(ImportCacheKey(info));
        if (!import.object) {
            import.valid = true;
            import.info = info;
            import.object = new ObjectValue(valueOwner, QLatin1String("<defaults>"));
            foreach (const CppComponentValue *object,
                     valueOwner->cppQmlTypes().createObjectsForImport(
                         defaultPackage, maxVersion)) {
                import.object->setMember(object->className(), object);
            }
            importCache.insert(ImportCacheKey(info), import);
        }
        imports->append(import);
    }
}