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/*
* Copyright (C) 2015 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "AbstractModuleRecord.h"
#include "JSDestructibleObject.h"
#include "ScopeOffset.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)
{
JSModuleNamespaceObject* object =
new (
NotNull,
allocateCell<JSModuleNamespaceObject>(exec->vm().heap, JSModuleNamespaceObject::allocationSize(resolutions.size())))
JSModuleNamespaceObject(exec->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 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&);
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(unsigned moduleRecords)
{
return offsetOfModuleRecords() + moduleRecords * sizeof(WriteBarrier<AbstractModuleRecord>);
}
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()); }
} // namespace JSC
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