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Diffstat (limited to 'src/qml/jsruntime/qv4executablecompilationunit_p.h')
| -rw-r--r-- | src/qml/jsruntime/qv4executablecompilationunit_p.h | 283 |
1 files changed, 283 insertions, 0 deletions
diff --git a/src/qml/jsruntime/qv4executablecompilationunit_p.h b/src/qml/jsruntime/qv4executablecompilationunit_p.h new file mode 100644 index 0000000000..930e138732 --- /dev/null +++ b/src/qml/jsruntime/qv4executablecompilationunit_p.h @@ -0,0 +1,283 @@ +// Copyright (C) 2019 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 QV4EXECUTABLECOMPILATIONUNIT_P_H +#define QV4EXECUTABLECOMPILATIONUNIT_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/qintrusivelist_p.h> +#include <private/qqmlmetatype_p.h> +#include <private/qqmlnullablevalue_p.h> +#include <private/qqmlpropertycachevector_p.h> +#include <private/qqmlrefcount_p.h> +#include <private/qqmltype_p.h> +#include <private/qqmltypenamecache_p.h> +#include <private/qv4compileddata_p.h> +#include <private/qv4identifierhash_p.h> + +#include <memory> + +QT_BEGIN_NAMESPACE + +class QQmlScriptData; +class QQmlEnginePrivate; + +namespace QV4 { + +class CompilationUnitMapper; + +struct CompilationUnitRuntimeData +{ + Heap::String **runtimeStrings = nullptr; // Array + + // pointers either to data->constants() or little-endian memory copy. + // We keep this member twice so that the JIT can access it via standard layout. + const StaticValue *constants = nullptr; + + QV4::StaticValue *runtimeRegularExpressions = nullptr; + Heap::InternalClass **runtimeClasses = nullptr; + const StaticValue **imports = nullptr; + + QV4::Lookup *runtimeLookups = nullptr; + QVector<QV4::Function *> runtimeFunctions; + QVector<QV4::Heap::InternalClass *> runtimeBlocks; + mutable QVector<QV4::Heap::Object *> templateObjects; +}; + +static_assert(std::is_standard_layout_v<CompilationUnitRuntimeData>); +static_assert(offsetof(CompilationUnitRuntimeData, runtimeStrings) == 0); +static_assert(offsetof(CompilationUnitRuntimeData, constants) == sizeof(QV4::Heap::String **)); +static_assert(offsetof(CompilationUnitRuntimeData, runtimeRegularExpressions) == offsetof(CompilationUnitRuntimeData, constants) + sizeof(const StaticValue *)); +static_assert(offsetof(CompilationUnitRuntimeData, runtimeClasses) == offsetof(CompilationUnitRuntimeData, runtimeRegularExpressions) + sizeof(const StaticValue *)); +static_assert(offsetof(CompilationUnitRuntimeData, imports) == offsetof(CompilationUnitRuntimeData, runtimeClasses) + sizeof(const StaticValue *)); + +class Q_QML_EXPORT ExecutableCompilationUnit final + : public CompilationUnitRuntimeData, + public QQmlRefCounted<ExecutableCompilationUnit> +{ + Q_DISABLE_COPY_MOVE(ExecutableCompilationUnit) +public: + friend class QQmlRefCounted<ExecutableCompilationUnit>; + friend class QQmlRefPointer<ExecutableCompilationUnit>; + friend struct ExecutionEngine; + + ExecutionEngine *engine = nullptr; + + QString finalUrlString() const { return m_compilationUnit->finalUrlString(); } + QString fileName() const { return m_compilationUnit->fileName(); } + + QUrl url() const { return m_compilationUnit->url(); } + QUrl finalUrl() const { return m_compilationUnit->finalUrl(); } + + QQmlRefPointer<QQmlTypeNameCache> typeNameCache() const + { + return m_compilationUnit->typeNameCache; + } + + QQmlPropertyCacheVector *propertyCachesPtr() + { + return &m_compilationUnit->propertyCaches; + } + + QQmlPropertyCache::ConstPtr rootPropertyCache() const + { + return m_compilationUnit->rootPropertyCache(); + } + + // mapping from component object index (CompiledData::Unit object index that points to component) to identifier hash of named objects + // this is initialized on-demand by QQmlContextData + QHash<int, IdentifierHash> namedObjectsPerComponentCache; + inline IdentifierHash namedObjectsPerComponent(int componentObjectIndex); + + int totalBindingsCount() const { return m_compilationUnit->totalBindingsCount(); } + int totalParserStatusCount() const { return m_compilationUnit->totalParserStatusCount(); } + int totalObjectCount() const { return m_compilationUnit->totalObjectCount(); } + + ResolvedTypeReference *resolvedType(int id) const + { + return m_compilationUnit->resolvedType(id); + } + + QQmlType qmlTypeForComponent(const QString &inlineComponentName = QString()) const + { + return m_compilationUnit->qmlTypeForComponent(inlineComponentName); + } + + QMetaType metaType() const { return m_compilationUnit->qmlType.typeId(); } + + int inlineComponentId(const QString &inlineComponentName) const + { + return m_compilationUnit->inlineComponentId(inlineComponentName); + } + + // --- interface for QQmlPropertyCacheCreator + using CompiledObject = CompiledData::CompilationUnit::CompiledObject; + using CompiledFunction = CompiledData::CompilationUnit::CompiledFunction; + using CompiledBinding = CompiledData::CompilationUnit::CompiledBinding; + using IdToObjectMap = CompiledData::CompilationUnit::IdToObjectMap; + + bool nativeMethodsAcceptThisObjects() const + { + return m_compilationUnit->nativeMethodsAcceptThisObjects(); + } + + bool ignoresFunctionSignature() const { return m_compilationUnit->ignoresFunctionSignature(); } + bool valueTypesAreCopied() const { return m_compilationUnit->valueTypesAreCopied(); } + bool valueTypesAreAddressable() const { return m_compilationUnit->valueTypesAreAddressable(); } + bool valueTypesAreAssertable() const { return m_compilationUnit->valueTypesAreAssertable(); } + bool componentsAreBound() const { return m_compilationUnit->componentsAreBound(); } + bool isESModule() const { return m_compilationUnit->isESModule(); } + + int objectCount() const { return m_compilationUnit->objectCount(); } + const CompiledObject *objectAt(int index) const + { + return m_compilationUnit->objectAt(index); + } + + Heap::Object *templateObjectAt(int index) const; + + Heap::Module *instantiate(); + const Value *resolveExport(QV4::String *exportName) + { + QVector<ResolveSetEntry> resolveSet; + return resolveExportRecursively(exportName, &resolveSet); + } + + QStringList exportedNames() const + { + QStringList names; + QVector<const ExecutableCompilationUnit*> exportNameSet; + getExportedNamesRecursively(&names, &exportNameSet); + names.sort(); + auto last = std::unique(names.begin(), names.end()); + names.erase(last, names.end()); + return names; + } + + void evaluate(); + void evaluateModuleRequests(); + + void mark(MarkStack *markStack) const { markObjects(markStack); } + void markObjects(MarkStack *markStack) const; + + QString bindingValueAsString(const CompiledData::Binding *binding) const; + double bindingValueAsNumber(const CompiledData::Binding *binding) const + { + return m_compilationUnit->bindingValueAsNumber(binding); + } + QString bindingValueAsScriptString(const CompiledData::Binding *binding) const + { + return m_compilationUnit->bindingValueAsScriptString(binding); + } + + struct TranslationDataIndex + { + uint index; + bool byId; + }; + + QString translateFrom(TranslationDataIndex index) const; + + Heap::Module *module() const { return m_module; } + void setModule(Heap::Module *module) { m_module = module; } + + const CompiledData::Unit *unitData() const { return m_compilationUnit->data; } + + QString stringAt(uint index) const { return m_compilationUnit->stringAt(index); } + + const QVector<QQmlRefPointer<QQmlScriptData>> *dependentScriptsPtr() const + { + return &m_compilationUnit->dependentScripts; + } + + const CompiledData::BindingPropertyData *bindingPropertyDataPerObjectAt( + qsizetype objectIndex) const + { + return &m_compilationUnit->bindingPropertyDataPerObject.at(objectIndex); + } + + const QQmlRefPointer<QV4::CompiledData::CompilationUnit> &baseCompilationUnit() const + { + return m_compilationUnit; + } + + QV4::Function *rootFunction() + { + if (!runtimeStrings) + populate(); + + const auto *data = unitData(); + return data->indexOfRootFunction != -1 + ? runtimeFunctions[data->indexOfRootFunction] + : nullptr; + } + + void populate(); + void clear(); + +protected: + quint32 totalStringCount() const + { return unitData()->stringTableSize; } + +private: + friend struct ExecutionEngine; + + QQmlRefPointer<CompiledData::CompilationUnit> m_compilationUnit; + Heap::Module *m_module = nullptr; + + struct ResolveSetEntry + { + ResolveSetEntry() {} + ResolveSetEntry(ExecutableCompilationUnit *module, QV4::String *exportName) + : module(module), exportName(exportName) {} + ExecutableCompilationUnit *module = nullptr; + QV4::String *exportName = nullptr; + }; + + ExecutableCompilationUnit(); + ExecutableCompilationUnit(QQmlRefPointer<CompiledData::CompilationUnit> &&compilationUnit); + ~ExecutableCompilationUnit(); + + static QQmlRefPointer<ExecutableCompilationUnit> create( + QQmlRefPointer<CompiledData::CompilationUnit> &&compilationUnit, + ExecutionEngine *engine); + + const Value *resolveExportRecursively(QV4::String *exportName, + QVector<ResolveSetEntry> *resolveSet); + + QUrl urlAt(int index) const { return QUrl(stringAt(index)); } + + Q_NEVER_INLINE IdentifierHash createNamedObjectsPerComponent(int componentObjectIndex); + const CompiledData::ExportEntry *lookupNameInExportTable( + const CompiledData::ExportEntry *firstExportEntry, int tableSize, + QV4::String *name) const; + + void getExportedNamesRecursively( + QStringList *names, QVector<const ExecutableCompilationUnit *> *exportNameSet, + bool includeDefaultExport = true) const; +}; + +IdentifierHash ExecutableCompilationUnit::namedObjectsPerComponent(int componentObjectIndex) +{ + auto it = namedObjectsPerComponentCache.constFind(componentObjectIndex); + if (Q_UNLIKELY(it == namedObjectsPerComponentCache.cend())) + return createNamedObjectsPerComponent(componentObjectIndex); + Q_ASSERT(!it->isEmpty()); + return *it; +} + +} // namespace QV4 + +QT_END_NAMESPACE + +#endif // QV4EXECUTABLECOMPILATIONUNIT_P_H |