chromium/third_party/blink/renderer/platform/bindings/frozen_array_base.h

// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_BINDINGS_FROZEN_ARRAY_BASE_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_BINDINGS_FROZEN_ARRAY_BASE_H_

#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"

namespace blink::bindings {

// FrozenArrayBase is the common base class of all the IDL frozen array classes.
// Most importantly this class provides a way of type dispatching (e.g. overload
// resolutions, SFINAE technique, etc.) so that it's possible to distinguish
// IDL frozen array types from anything else. Also it provides a common
// implementation of IDL frozen array types.
//
// Note that NativeValueTraits<IDLArray<T>> does _not_ return FrozenArray<T>,
// it returns (Heap)Vector<T>, because it's convenient for Blink implementation
// because it's easy (and cheap when the move semantics is used) to convert a
// (Heap)Vector<T> to a FrozenArray<T> while the reverse conversion is not.
// ToV8Traits<IDLArray<T>> takes a FrozenArray<T> as normally.
class PLATFORM_EXPORT FrozenArrayBase : public ScriptWrappable { … };

}  // namespace blink::bindings

#endif  // THIRD_PARTY_BLINK_RENDERER_PLATFORM_BINDINGS_FROZEN_ARRAY_BASE_H_