JSModuleNamespaceObject.h [plain text]
#pragma once
#include "AbstractModuleRecord.h"
#include "JSDestructibleObject.h"
namespace JSC {
class JSModuleNamespaceObject final : public JSDestructibleObject {
public:
typedef JSDestructibleObject Base;
static const unsigned StructureFlags = Base::StructureFlags | OverridesGetOwnPropertySlot | InterceptsGetOwnPropertySlotByIndexEvenWhenLengthIsNotZero | OverridesGetPropertyNames | GetOwnPropertySlotIsImpureForPropertyAbsence | IsImmutablePrototypeExoticObject;
static JSModuleNamespaceObject* create(ExecState* exec, JSGlobalObject* globalObject, Structure* structure, AbstractModuleRecord* moduleRecord, Vector<std::pair<Identifier, AbstractModuleRecord::Resolution>>&& resolutions)
{
VM& vm = exec->vm();
JSModuleNamespaceObject* object =
new (
NotNull,
allocateCell<JSModuleNamespaceObject>(vm.heap, JSModuleNamespaceObject::allocationSize(resolutions.size())))
JSModuleNamespaceObject(vm, structure);
object->finishCreation(exec, globalObject, moduleRecord, WTFMove(resolutions));
return object;
}
JS_EXPORT_PRIVATE static bool getOwnPropertySlot(JSObject*, ExecState*, PropertyName, PropertySlot&);
JS_EXPORT_PRIVATE static bool getOwnPropertySlotByIndex(JSObject*, ExecState*, unsigned propertyName, PropertySlot&);
JS_EXPORT_PRIVATE static bool put(JSCell*, ExecState*, PropertyName, JSValue, PutPropertySlot&);
JS_EXPORT_PRIVATE static bool putByIndex(JSCell*, ExecState*, unsigned propertyName, JSValue, bool shouldThrow);
JS_EXPORT_PRIVATE static bool deleteProperty(JSCell*, ExecState*, PropertyName);
JS_EXPORT_PRIVATE static void getOwnPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode);
JS_EXPORT_PRIVATE static bool defineOwnProperty(JSObject*, ExecState*, PropertyName, const PropertyDescriptor&, bool shouldThrow);
DECLARE_EXPORT_INFO;
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
AbstractModuleRecord* moduleRecord() { return m_moduleRecord.get(); }
protected:
JS_EXPORT_PRIVATE void finishCreation(ExecState*, JSGlobalObject*, AbstractModuleRecord*, Vector<std::pair<Identifier, AbstractModuleRecord::Resolution>>&&);
JS_EXPORT_PRIVATE JSModuleNamespaceObject(VM&, Structure*);
private:
static void destroy(JSCell*);
static void visitChildren(JSCell*, SlotVisitor&);
bool getOwnPropertySlotCommon(ExecState*, PropertyName, PropertySlot&);
WriteBarrierBase<AbstractModuleRecord>& moduleRecordAt(unsigned offset)
{
return moduleRecords()[offset];
}
WriteBarrierBase<AbstractModuleRecord>* moduleRecords()
{
return bitwise_cast<WriteBarrierBase<AbstractModuleRecord>*>(bitwise_cast<char*>(this) + offsetOfModuleRecords());
}
static size_t offsetOfModuleRecords()
{
return WTF::roundUpToMultipleOf<sizeof(WriteBarrier<AbstractModuleRecord>)>(sizeof(JSModuleNamespaceObject));
}
static size_t allocationSize(Checked<size_t> moduleRecords)
{
return (offsetOfModuleRecords() + moduleRecords * sizeof(WriteBarrier<AbstractModuleRecord>)).unsafeGet();
}
struct ExportEntry {
Identifier localName;
unsigned moduleRecordOffset;
};
typedef HashMap<RefPtr<UniquedStringImpl>, ExportEntry, IdentifierRepHash, HashTraits<RefPtr<UniquedStringImpl>>> ExportMap;
ExportMap m_exports;
Vector<Identifier> m_names;
WriteBarrier<AbstractModuleRecord> m_moduleRecord;
};
inline bool isJSModuleNamespaceObject(JSCell* cell)
{
return cell->classInfo(*cell->vm()) == JSModuleNamespaceObject::info();
}
inline bool isJSModuleNamespaceObject(JSValue v) { return v.isCell() && isJSModuleNamespaceObject(v.asCell()); }
}