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https://github.com/LadybirdBrowser/ladybird.git
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ca54691ecf
structured_deserialize_internal() is added to support sub deserialization from serializable interfaces serialization steps which needs the ability to pass onto the current position in the deserialized data.
145 lines
6.9 KiB
C++
145 lines
6.9 KiB
C++
/*
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* Copyright (c) 2022, Daniel Ehrenberg <dan@littledan.dev>
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* Copyright (c) 2022, Andrew Kaster <akaster@serenityos.org>
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* Copyright (c) 2024, Kenneth Myhra <kennethmyhra@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Result.h>
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#include <AK/Types.h>
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#include <AK/Vector.h>
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#include <LibIPC/Forward.h>
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#include <LibJS/Forward.h>
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#include <LibWeb/WebIDL/ExceptionOr.h>
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// Structured serialize is an entirely different format from IPC because:
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// - It contains representation of type information
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// - It may contain circularities
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// - It is restricted to JS values
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namespace Web::HTML {
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using SerializationRecord = Vector<u32>;
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using SerializationMemory = HashMap<JS::Handle<JS::Value>, u32>;
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using DeserializationMemory = JS::MarkedVector<JS::Value>;
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struct TransferDataHolder {
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Vector<u8> data;
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Vector<IPC::File> fds;
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};
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struct SerializedTransferRecord {
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SerializationRecord serialized;
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Vector<TransferDataHolder> transfer_data_holders;
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};
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struct DeserializedTransferRecord {
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JS::Value deserialized;
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Vector<JS::Handle<JS::Object>> transferred_values;
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};
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struct DeserializedRecord {
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Optional<JS::Value> value;
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size_t position;
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};
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enum class TransferType : u8 {
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MessagePort,
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};
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WebIDL::ExceptionOr<SerializationRecord> structured_serialize(JS::VM& vm, JS::Value);
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WebIDL::ExceptionOr<SerializationRecord> structured_serialize_for_storage(JS::VM& vm, JS::Value);
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WebIDL::ExceptionOr<SerializationRecord> structured_serialize_internal(JS::VM& vm, JS::Value, bool for_storage, SerializationMemory&);
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WebIDL::ExceptionOr<JS::Value> structured_deserialize(JS::VM& vm, SerializationRecord const& serialized, JS::Realm& target_realm, Optional<DeserializationMemory>);
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WebIDL::ExceptionOr<DeserializedRecord> structured_deserialize_internal(JS::VM& vm, ReadonlySpan<u32> const& serialized, JS::Realm& target_realm, DeserializationMemory& memory, Optional<size_t> position = {});
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void serialize_boolean_primitive(SerializationRecord& serialized, JS::Value& value);
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void serialize_number_primitive(SerializationRecord& serialized, JS::Value& value);
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WebIDL::ExceptionOr<void> serialize_big_int_primitive(JS::VM& vm, SerializationRecord& serialized, JS::Value& value);
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WebIDL::ExceptionOr<void> serialize_string_primitive(JS::VM& vm, SerializationRecord& serialized, JS::Value& value);
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void serialize_boolean_object(SerializationRecord& serialized, JS::Value& value);
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void serialize_number_object(SerializationRecord& serialized, JS::Value& value);
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WebIDL::ExceptionOr<void> serialize_big_int_object(JS::VM& vm, SerializationRecord& serialized, JS::Value& value);
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WebIDL::ExceptionOr<void> serialize_string_object(JS::VM& vm, SerializationRecord& serialized, JS::Value& value);
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void serialize_date_object(SerializationRecord& serialized, JS::Value& value);
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WebIDL::ExceptionOr<void> serialize_reg_exp_object(JS::VM& vm, SerializationRecord& serialized, JS::Value& value);
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template<typename T>
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requires(IsIntegral<T> || IsFloatingPoint<T>)
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void serialize_primitive_type(SerializationRecord& serialized, T value)
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{
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if constexpr (sizeof(T) < sizeof(u32)) {
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// NOTE: If the value is smaller than a u32, we can just store it directly.
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serialized.append(static_cast<u32>(value));
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return;
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}
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serialized.append(bit_cast<u32*>(&value), sizeof(T) / 4);
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}
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template<typename T>
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requires(IsEnum<T>)
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void serialize_enum(SerializationRecord& serialized, T value)
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{
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serialize_primitive_type<UnderlyingType<T>>(serialized, to_underlying(value));
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}
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WebIDL::ExceptionOr<void> serialize_bytes(JS::VM& vm, Vector<u32>& vector, ReadonlyBytes bytes);
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WebIDL::ExceptionOr<void> serialize_string(JS::VM& vm, Vector<u32>& vector, DeprecatedFlyString const& string);
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WebIDL::ExceptionOr<void> serialize_string(JS::VM& vm, Vector<u32>& vector, String const& string);
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WebIDL::ExceptionOr<void> serialize_string(JS::VM& vm, Vector<u32>& vector, JS::PrimitiveString const& primitive_string);
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WebIDL::ExceptionOr<void> serialize_array_buffer(JS::VM& vm, Vector<u32>& vector, JS::ArrayBuffer const& array_buffer, bool for_storage);
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template<OneOf<JS::TypedArrayBase, JS::DataView> ViewType>
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WebIDL::ExceptionOr<void> serialize_viewed_array_buffer(JS::VM& vm, Vector<u32>& vector, ViewType const& view, bool for_storage, SerializationMemory& memory);
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bool deserialize_boolean_primitive(ReadonlySpan<u32> const& serialized, size_t& position);
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double deserialize_number_primitive(ReadonlySpan<u32> const& serialized, size_t& position);
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JS::NonnullGCPtr<JS::BooleanObject> deserialize_boolean_object(JS::Realm& realm, ReadonlySpan<u32> const& serialized, size_t& position);
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JS::NonnullGCPtr<JS::NumberObject> deserialize_number_object(JS::Realm& realm, ReadonlySpan<u32> const& serialized, size_t& position);
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WebIDL::ExceptionOr<JS::NonnullGCPtr<JS::BigIntObject>> deserialize_big_int_object(JS::Realm& realm, ReadonlySpan<u32> const& serialized, size_t& position);
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WebIDL::ExceptionOr<JS::NonnullGCPtr<JS::StringObject>> deserialize_string_object(JS::Realm& realm, ReadonlySpan<u32> const& serialized, size_t& position);
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JS::NonnullGCPtr<JS::Date> deserialize_date_object(JS::Realm& realm, ReadonlySpan<u32> const& serialized, size_t& position);
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WebIDL::ExceptionOr<JS::NonnullGCPtr<JS::RegExpObject>> deserialize_reg_exp_object(JS::Realm& realm, ReadonlySpan<u32> const& serialized, size_t& position);
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template<typename T>
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requires(IsIntegral<T> || IsFloatingPoint<T> || IsEnum<T>)
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T deserialize_primitive_type(ReadonlySpan<u32> const& serialized, size_t& position)
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{
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T value;
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// NOTE: Make sure we always round up, otherwise Ts that are less than 32 bit will end up with a size of 0.
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auto size = 1 + ((sizeof(value) - 1) / 4);
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VERIFY(position + size <= serialized.size());
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memcpy(&value, serialized.offset_pointer(position), sizeof(value));
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position += size;
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return value;
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}
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WebIDL::ExceptionOr<ByteBuffer> deserialize_bytes(JS::VM& vm, ReadonlySpan<u32> vector, size_t& position);
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WebIDL::ExceptionOr<String> deserialize_string(JS::VM& vm, ReadonlySpan<u32> vector, size_t& position);
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WebIDL::ExceptionOr<JS::NonnullGCPtr<JS::PrimitiveString>> deserialize_string_primitive(JS::VM& vm, ReadonlySpan<u32> vector, size_t& position);
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WebIDL::ExceptionOr<JS::NonnullGCPtr<JS::BigInt>> deserialize_big_int_primitive(JS::VM& vm, ReadonlySpan<u32> vector, size_t& position);
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WebIDL::ExceptionOr<SerializedTransferRecord> structured_serialize_with_transfer(JS::VM& vm, JS::Value value, Vector<JS::Handle<JS::Object>> const& transfer_list);
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WebIDL::ExceptionOr<DeserializedTransferRecord> structured_deserialize_with_transfer(JS::VM& vm, SerializedTransferRecord&);
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}
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namespace IPC {
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template<>
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ErrorOr<void> encode(Encoder&, ::Web::HTML::SerializedTransferRecord const&);
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template<>
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ErrorOr<void> encode(Encoder&, ::Web::HTML::TransferDataHolder const&);
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template<>
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ErrorOr<::Web::HTML::SerializedTransferRecord> decode(Decoder&);
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template<>
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ErrorOr<::Web::HTML::TransferDataHolder> decode(Decoder&);
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}
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