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LibWeb: Add initial implementation of structured clone

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This implementation only works for cloning Numbers, and does not try to
do all the spec steps for structured serialize and deserialize.

Co-Authored-By: Andrew Kaster <akaster@serenityos.org>
This commit is contained in:
Daniel Ehrenberg 2022-04-05 02:24:10 +02:00 • committed by Andreas Kling
parent d94d60219c
commit 09841f56ed
5 changed files with 213 additions and 0 deletions
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34
Userland/Libraries/LibWeb/HTML/StructuredSerialize.h Normal file
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/*
* Copyright (c) 2022, Daniel Ehrenberg <dan@littledan.dev>
* Copyright (c) 2022, Andrew Kaster <akaster@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Result.h>
#include <AK/Types.h>
#include <AK/Vector.h>
#include <LibJS/Forward.h>
#include <LibWeb/WebIDL/ExceptionOr.h>
// Structured serialize is an entirely different format from IPC because:
// - It contains representation of type information
// - It may contain circularities
// - It is restricted to JS values
namespace Web::HTML {
using SerializationRecord = Vector<u32>;
using SerializationMemory = HashMap<JS::Handle<JS::Value>, u32>;
WebIDL::ExceptionOr<SerializationRecord> structured_serialize(JS::VM& vm, JS::Value);
WebIDL::ExceptionOr<SerializationRecord> structured_serialize_for_storage(JS::VM& vm, JS::Value);
WebIDL::ExceptionOr<SerializationRecord> structured_serialize_internal(JS::VM& vm, JS::Value, bool for_storage, Optional<SerializationMemory>);
WebIDL::ExceptionOr<JS::Value> structured_deserialize(JS::VM& vm, SerializationRecord const& serialized, JS::Realm& target_realm, Optional<SerializationMemory>);
// TODO: structured_[de]serialize_with_transfer
}