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serenity/Userland/Libraries/LibJS/Runtime/StringObject.h
Andreas Kling 7df1692580 LibJS: Add Object::may_interfere_with_indexed_property_access() virtual
This function must return true if the object may intercept and customize
access to indexed properties (properties where the property name is a
non-negative integer.)

This will be used to implement fast path optimizations for array-like
accesses in subsequent commits.
2023-10-05 16:57:45 +02:00

44 lines
1.3 KiB
C++

/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibJS/Runtime/Object.h>
namespace JS {
class StringObject : public Object {
JS_OBJECT(StringObject, Object);
public:
[[nodiscard]] static NonnullGCPtr<StringObject> create(Realm&, PrimitiveString&, Object& prototype);
virtual void initialize(Realm&) override;
virtual ~StringObject() override = default;
PrimitiveString const& primitive_string() const { return m_string; }
PrimitiveString& primitive_string() { return m_string; }
protected:
StringObject(PrimitiveString&, Object& prototype);
private:
virtual ThrowCompletionOr<Optional<PropertyDescriptor>> internal_get_own_property(PropertyKey const&) const override;
virtual ThrowCompletionOr<bool> internal_define_own_property(PropertyKey const&, PropertyDescriptor const&) override;
virtual ThrowCompletionOr<MarkedVector<Value>> internal_own_property_keys() const override;
virtual bool may_interfere_with_indexed_property_access() const final { return true; }
virtual bool is_string_object() const final { return true; }
virtual void visit_edges(Visitor&) override;
NonnullGCPtr<PrimitiveString> m_string;
};
template<>
inline bool Object::fast_is<StringObject>() const { return is_string_object(); }
}