ladybird/Libraries/LibWeb/FileAPI/Blob.h
Shannon Booth 637fd51595 LibWeb: Unify WebIDL C++ type generation
Represent WebIDL C++ types with a single CppType model that tracks
nullability, optional presence, and contained storage.

GC-like values now use GC::Ref/GC::Ptr directly, while containers choose
"plain", "Root", or "Conservative" container types depending on what
they contain. For example, sequence<Element> becomes a RootVector of
GC::Ref values, while sequence<SomeDictionary> becomes a
ConservativeVector only when the dictionary contains GC-like values.
This moves the generated bindings away from wrapping GC values in
GC::Root by default.

This has broad fallout as the types passed to interfaces for GC
objects changes almost fully across the board.
2026-05-23 18:26:12 +02:00

75 lines
2.8 KiB
C++

/*
* Copyright (c) 2022-2024, Kenneth Myhra <kennethmyhra@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/NonnullRefPtr.h>
#include <AK/Vector.h>
#include <LibWeb/Bindings/Blob.h>
#include <LibWeb/Bindings/PlatformObject.h>
#include <LibWeb/Bindings/Serializable.h>
#include <LibWeb/Export.h>
#include <LibWeb/Forward.h>
#include <LibWeb/WebIDL/ExceptionOr.h>
namespace Web::FileAPI {
using BlobPart = Variant<GC::Ref<WebIDL::BufferSource>, GC::Ref<Blob>, String>;
using BlobParts = GC::ConservativeVector<BlobPart>;
using BlobPartsOrByteBuffer = Variant<BlobParts, ByteBuffer>;
[[nodiscard]] ErrorOr<String> convert_line_endings_to_native(StringView string);
[[nodiscard]] ErrorOr<ByteBuffer> process_blob_parts(BlobParts const& blob_parts, Optional<Bindings::BlobPropertyBag> const& options = {});
[[nodiscard]] bool is_basic_latin(StringView view);
class WEB_API Blob
: public Bindings::PlatformObject
, public Bindings::Serializable {
WEB_PLATFORM_OBJECT(Blob, Bindings::PlatformObject);
GC_DECLARE_ALLOCATOR(Blob);
public:
virtual ~Blob() override;
[[nodiscard]] static GC::Ref<Blob> create(JS::Realm&, ByteBuffer, String type);
[[nodiscard]] static GC::Ref<Blob> create(JS::Realm&, Optional<BlobPartsOrByteBuffer> const& blob_parts_or_byte_buffer = {}, Optional<Bindings::BlobPropertyBag> const& options = {});
static WebIDL::ExceptionOr<GC::Ref<Blob>> construct_impl(JS::Realm&, Optional<BlobParts> const& blob_parts = {}, Optional<Bindings::BlobPropertyBag> const& options = {});
// https://w3c.github.io/FileAPI/#dfn-size
u64 size() const { return m_byte_buffer.size(); }
// https://w3c.github.io/FileAPI/#dfn-type
String const& type() const { return m_type; }
WebIDL::ExceptionOr<GC::Ref<Blob>> slice(Optional<i64> start = {}, Optional<i64> end = {}, Optional<String> const& content_type = {});
GC::Ref<Streams::ReadableStream> stream();
GC::Ref<WebIDL::Promise> text();
GC::Ref<WebIDL::Promise> array_buffer();
GC::Ref<WebIDL::Promise> bytes();
ReadonlyBytes raw_bytes() const LIFETIME_BOUND { return m_byte_buffer.bytes(); }
GC::Ref<Streams::ReadableStream> get_stream();
virtual WebIDL::ExceptionOr<void> serialization_steps(HTML::TransferDataEncoder&, bool for_storage, HTML::SerializationMemory&) override;
virtual WebIDL::ExceptionOr<void> deserialization_steps(HTML::TransferDataDecoder&, HTML::DeserializationMemory&) override;
protected:
Blob(JS::Realm&, ByteBuffer, String type);
Blob(JS::Realm&, ByteBuffer);
virtual void initialize(JS::Realm&) override;
WebIDL::ExceptionOr<GC::Ref<Blob>> slice_blob(Optional<i64> start = {}, Optional<i64> end = {}, Optional<String> const& content_type = {});
ByteBuffer m_byte_buffer {};
String m_type {};
private:
explicit Blob(JS::Realm&);
};
}