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LibWeb: Expose the ReadableStream tee IDL interface

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This just sets up the plumbing to the underlying ReadableStreamTee AO,
which as of this commit, will just throw a NotImplemented exception.
This commit is contained in:
Timothy Flynn 2024-01-28 10:28:59 -05:00 • committed by Andreas Kling
parent 5ccd1ff1bf
commit d8413774df
5 changed files with 43 additions and 1 deletions
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18
Userland/Libraries/LibWeb/Streams/ReadableStream.h
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@ -26,6 +26,23 @@ struct ReadableStreamGetReaderOptions {
Optional<Bindings::ReadableStreamReaderMode> mode;
};
struct ReadableStreamPair {
// Define a couple container-like methods so this type may be used as the return type of the IDL `tee` implementation.
size_t size() const { return 2; }
JS::NonnullGCPtr<ReadableStream>& at(size_t index)
{
if (index == 0)
return first;
if (index == 1)
return second;
VERIFY_NOT_REACHED();
}
JS::NonnullGCPtr<ReadableStream> first;
JS::NonnullGCPtr<ReadableStream> second;
};
// https://streams.spec.whatwg.org/#readablestream
class ReadableStream final : public Bindings::PlatformObject {
WEB_PLATFORM_OBJECT(ReadableStream, Bindings::PlatformObject);
@ -45,6 +62,7 @@ public:
bool locked() const;
WebIDL::ExceptionOr<JS::GCPtr<JS::Object>> cancel(JS::Value reason);
WebIDL::ExceptionOr<ReadableStreamReader> get_reader(ReadableStreamGetReaderOptions const& = {});
WebIDL::ExceptionOr<ReadableStreamPair> tee();
Optional<ReadableStreamController>& controller() { return m_controller; }
void set_controller(Optional<ReadableStreamController> value) { m_controller = move(value); }