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953fe75271
The entire purpose of this AO is to avoid handling exceptions, which we can do now that the underlying AOs do not throw exceptions on OOM.
81 lines
3.4 KiB
C++
81 lines
3.4 KiB
C++
/*
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* Copyright (c) 2022-2023, Linus Groh <linusg@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/ByteBuffer.h>
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#include <AK/Forward.h>
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#include <AK/NonnullRefPtr.h>
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#include <AK/Optional.h>
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#include <AK/Variant.h>
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#include <LibGC/Ptr.h>
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#include <LibGC/Root.h>
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#include <LibWeb/Fetch/Infrastructure/Task.h>
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#include <LibWeb/FileAPI/Blob.h>
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#include <LibWeb/Streams/ReadableStream.h>
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#include <LibWeb/WebIDL/Promise.h>
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namespace Web::Fetch::Infrastructure {
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// https://fetch.spec.whatwg.org/#concept-body
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class Body final : public JS::Cell {
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GC_CELL(Body, JS::Cell);
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GC_DECLARE_ALLOCATOR(Body);
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public:
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using SourceType = Variant<Empty, ByteBuffer, GC::Root<FileAPI::Blob>>;
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// processBody must be an algorithm accepting a byte sequence.
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using ProcessBodyCallback = GC::Ref<GC::Function<void(ByteBuffer)>>;
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// processBodyError must be an algorithm optionally accepting an exception.
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using ProcessBodyErrorCallback = GC::Ref<GC::Function<void(JS::Value)>>;
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// processBodyChunk must be an algorithm accepting a byte sequence.
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using ProcessBodyChunkCallback = GC::Ref<GC::Function<void(ByteBuffer)>>;
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// processEndOfBody must be an algorithm accepting no arguments
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using ProcessEndOfBodyCallback = GC::Ref<GC::Function<void()>>;
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[[nodiscard]] static GC::Ref<Body> create(JS::VM&, GC::Ref<Streams::ReadableStream>);
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[[nodiscard]] static GC::Ref<Body> create(JS::VM&, GC::Ref<Streams::ReadableStream>, SourceType, Optional<u64>);
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[[nodiscard]] GC::Ref<Streams::ReadableStream> stream() const { return *m_stream; }
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void set_stream(GC::Ref<Streams::ReadableStream> value) { m_stream = value; }
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[[nodiscard]] SourceType const& source() const { return m_source; }
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[[nodiscard]] Optional<u64> const& length() const { return m_length; }
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[[nodiscard]] GC::Ref<Body> clone(JS::Realm&);
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void fully_read(JS::Realm&, ProcessBodyCallback process_body, ProcessBodyErrorCallback process_body_error, TaskDestination task_destination) const;
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void incrementally_read(ProcessBodyChunkCallback process_body_chunk, ProcessEndOfBodyCallback process_end_of_body, ProcessBodyErrorCallback process_body_error, TaskDestination task_destination);
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void incrementally_read_loop(Streams::ReadableStreamDefaultReader& reader, GC::Ref<JS::Object> task_destination, ProcessBodyChunkCallback process_body_chunk, ProcessEndOfBodyCallback process_end_of_body, ProcessBodyErrorCallback process_body_error);
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virtual void visit_edges(JS::Cell::Visitor&) override;
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private:
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explicit Body(GC::Ref<Streams::ReadableStream>);
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Body(GC::Ref<Streams::ReadableStream>, SourceType, Optional<u64>);
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// https://fetch.spec.whatwg.org/#concept-body-stream
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// A stream (a ReadableStream object).
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GC::Ref<Streams::ReadableStream> m_stream;
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// https://fetch.spec.whatwg.org/#concept-body-source
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// A source (null, a byte sequence, a Blob object, or a FormData object), initially null.
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SourceType m_source;
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// https://fetch.spec.whatwg.org/#concept-body-total-bytes
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// A length (null or an integer), initially null.
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Optional<u64> m_length;
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};
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// https://fetch.spec.whatwg.org/#body-with-type
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// A body with type is a tuple that consists of a body (a body) and a type (a header value or null).
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struct BodyWithType {
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GC::Ref<Body> body;
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Optional<ByteBuffer> type;
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};
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GC::Ref<Body> byte_sequence_as_body(JS::Realm&, ReadonlyBytes);
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}
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