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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QQMLTYPELOADER_P_H
#define QQMLTYPELOADER_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <private/qqmldatablob_p.h>
#include <private/qqmlimport_p.h>
#include <private/qqmlmetatype_p.h>
#include <private/qv4compileddata_p.h>
#include <QtQml/qtqmlglobal.h>
#include <QtQml/qqmlerror.h>
#include <QtCore/qcache.h>
#include <QtCore/qmutex.h>
#include <memory>
QT_BEGIN_NAMESPACE
class QQmlScriptBlob;
class QQmlQmldirData;
class QQmlTypeData;
class QQmlEngineExtensionInterface;
class QQmlExtensionInterface;
class QQmlProfiler;
class QQmlTypeLoaderThread;
class QQmlEngine;
class Q_QML_EXPORT QQmlTypeLoader
{
Q_DECLARE_TR_FUNCTIONS(QQmlTypeLoader)
public:
using ChecksumCache = QHash<quintptr, QByteArray>;
enum Mode { PreferSynchronous, Asynchronous, Synchronous };
class Q_QML_EXPORT Blob : public QQmlDataBlob
{
public:
Blob(const QUrl &url, QQmlDataBlob::Type type, QQmlTypeLoader *loader);
~Blob() override;
const QQmlImports *imports() const { return m_importCache.data(); }
void setCachedUnitStatus(QQmlMetaType::CachedUnitLookupError status) { m_cachedUnitStatus = status; }
struct PendingImport
{
QString uri;
QString qualifier;
QV4::CompiledData::Import::ImportType type
= QV4::CompiledData::Import::ImportType::ImportLibrary;
QV4::CompiledData::Location location;
QQmlImports::ImportFlags flags;
quint8 precedence = 0;
int priority = 0;
QTypeRevision version;
PendingImport() = default;
PendingImport(Blob *blob, const QV4::CompiledData::Import *import,
QQmlImports::ImportFlags flags);
};
using PendingImportPtr = std::shared_ptr<PendingImport>;
void importQmldirScripts(const PendingImportPtr &import, const QQmlTypeLoaderQmldirContent &qmldir, const QUrl &qmldirUrl);
protected:
bool addImport(const QV4::CompiledData::Import *import, QQmlImports::ImportFlags,
QList<QQmlError> *errors);
bool addImport(PendingImportPtr import, QList<QQmlError> *errors);
bool fetchQmldir(const QUrl &url, PendingImportPtr import, int priority, QList<QQmlError> *errors);
bool updateQmldir(const QQmlRefPointer<QQmlQmldirData> &data, const PendingImportPtr &import, QList<QQmlError> *errors);
private:
bool addScriptImport(const PendingImportPtr &import);
bool addFileImport(const PendingImportPtr &import, QList<QQmlError> *errors);
bool addLibraryImport(const PendingImportPtr &import, QList<QQmlError> *errors);
virtual bool qmldirDataAvailable(const QQmlRefPointer<QQmlQmldirData> &, QList<QQmlError> *);
virtual void scriptImported(const QQmlRefPointer<QQmlScriptBlob> &, const QV4::CompiledData::Location &, const QString &, const QString &) {}
void dependencyComplete(QQmlDataBlob *) override;
bool loadImportDependencies(
const PendingImportPtr ¤tImport, const QString &qmldirUri,
QQmlImports::ImportFlags flags, QList<QQmlError> *errors);
protected:
bool loadDependentImports(
const QList<QQmlDirParser::Import> &imports, const QString &qualifier,
QTypeRevision version, quint16 precedence, QQmlImports::ImportFlags flags,
QList<QQmlError> *errors);
virtual QString stringAt(int) const { return QString(); }
bool isDebugging() const;
bool readCacheFile() const;
bool writeCacheFile() const;
QQmlMetaType::CacheMode aotCacheMode() const;
QQmlRefPointer<QQmlImports> m_importCache;
QVector<PendingImportPtr> m_unresolvedImports;
QVector<QQmlRefPointer<QQmlQmldirData>> m_qmldirs;
QQmlMetaType::CachedUnitLookupError m_cachedUnitStatus = QQmlMetaType::CachedUnitLookupError::NoError;
};
QQmlTypeLoader(QQmlEngine *);
~QQmlTypeLoader();
template<
typename Engine,
typename EnginePrivate = QQmlEnginePrivate,
typename = std::enable_if_t<std::is_same_v<Engine, QQmlEngine>>>
static QQmlTypeLoader *get(Engine *engine)
{
return get(EnginePrivate::get(engine));
}
template<
typename Engine,
typename = std::enable_if_t<std::is_same_v<Engine, QQmlEnginePrivate>>>
static QQmlTypeLoader *get(Engine *engine)
{
return &engine->typeLoader;
}
QQmlImportDatabase *importDatabase() const;
ChecksumCache *checksumCache() { return &m_checksumCache; }
const ChecksumCache *checksumCache() const { return &m_checksumCache; }
static QUrl normalize(const QUrl &unNormalizedUrl);
QQmlRefPointer<QQmlTypeData> getType(const QUrl &unNormalizedUrl, Mode mode = PreferSynchronous);
QQmlRefPointer<QQmlTypeData> getType(const QByteArray &, const QUrl &url, Mode mode = PreferSynchronous);
void injectScript(const QUrl &relativeUrl, const QV4::Value &value);
QQmlRefPointer<QQmlScriptBlob> injectedScript(const QUrl &relativeUrl);
QQmlRefPointer<QQmlScriptBlob> getScript(const QUrl &unNormalizedUrl);
QQmlRefPointer<QQmlQmldirData> getQmldir(const QUrl &);
QString absoluteFilePath(const QString &path);
bool fileExists(const QString &path, const QString &file);
bool directoryExists(const QString &path);
const QQmlTypeLoaderQmldirContent qmldirContent(const QString &filePath);
void setQmldirContent(const QString &filePath, const QString &content);
void clearCache();
void trimCache();
bool isTypeLoaded(const QUrl &url) const;
bool isScriptLoaded(const QUrl &url) const;
void lock() { m_mutex.lock(); }
void unlock() { m_mutex.unlock(); }
void load(QQmlDataBlob *, Mode = PreferSynchronous);
void loadWithStaticData(QQmlDataBlob *, const QByteArray &, Mode = PreferSynchronous);
void loadWithCachedUnit(QQmlDataBlob *blob, const QQmlPrivate::CachedQmlUnit *unit, Mode mode = PreferSynchronous);
QQmlEngine *engine() const;
void initializeEngine(QQmlEngineExtensionInterface *, const char *);
void initializeEngine(QQmlExtensionInterface *, const char *);
void invalidate();
#if !QT_CONFIG(qml_debug)
quintptr profiler() const { return 0; }
void setProfiler(quintptr) {}
#else
QQmlProfiler *profiler() const { return m_profiler.data(); }
void setProfiler(QQmlProfiler *profiler);
#endif // QT_CONFIG(qml_debug)
private:
friend class QQmlDataBlob;
friend class QQmlTypeLoaderThread;
#if QT_CONFIG(qml_network)
friend class QQmlTypeLoaderNetworkReplyProxy;
#endif // qml_network
void shutdownThread();
void loadThread(const QQmlDataBlob::Ptr &);
void loadWithStaticDataThread(const QQmlDataBlob::Ptr &, const QByteArray &);
void loadWithCachedUnitThread(const QQmlDataBlob::Ptr &blob, const QQmlPrivate::CachedQmlUnit *unit);
#if QT_CONFIG(qml_network)
void networkReplyFinished(QNetworkReply *);
void networkReplyProgress(QNetworkReply *, qint64, qint64);
typedef QHash<QNetworkReply *, QQmlDataBlob::Ptr> NetworkReplies;
#endif
void setData(const QQmlDataBlob::Ptr &, const QByteArray &);
void setData(const QQmlDataBlob::Ptr &, const QString &fileName);
void setData(const QQmlDataBlob::Ptr &, const QQmlDataBlob::SourceCodeData &);
void setCachedUnit(const QQmlDataBlob::Ptr &blob, const QQmlPrivate::CachedQmlUnit *unit);
typedef QHash<QUrl, QQmlTypeData *> TypeCache;
typedef QHash<QUrl, QQmlScriptBlob *> ScriptCache;
typedef QHash<QUrl, QQmlQmldirData *> QmldirCache;
typedef QCache<QString, QCache<QString, bool> > ImportDirCache;
typedef QStringHash<QQmlTypeLoaderQmldirContent *> ImportQmlDirCache;
QQmlEngine *m_engine;
QQmlTypeLoaderThread *m_thread;
QMutex &m_mutex;
#if QT_CONFIG(qml_debug)
QScopedPointer<QQmlProfiler> m_profiler;
#endif
#if QT_CONFIG(qml_network)
NetworkReplies m_networkReplies;
#endif
TypeCache m_typeCache;
int m_typeCacheTrimThreshold;
ScriptCache m_scriptCache;
QmldirCache m_qmldirCache;
ImportDirCache m_importDirCache;
ImportQmlDirCache m_importQmlDirCache;
ChecksumCache m_checksumCache;
template<typename Loader>
void doLoad(const Loader &loader, QQmlDataBlob *blob, Mode mode);
void updateTypeCacheTrimThreshold();
friend struct PlainLoader;
friend struct CachedLoader;
friend struct StaticLoader;
};
QT_END_NAMESPACE
#endif // QQMLTYPELOADER_P_H
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