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LibWeb: Add a 'piped through' helper method on ReadableStream

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This reads a bit nicer, and follows the streams spec pattern on
performing operations on a stream outside of the streams spec.
This commit is contained in:
Shannon Booth 2024-12-24 12:25:01 +13:00 • committed by Andreas Kling
parent 79a2b96d1c
commit da408cb09a
Notes: github-actions[bot] 2024-12-25 11:03:22 +00:00
5 changed files with 22 additions and 6 deletions
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16
Libraries/LibWeb/Streams/ReadableStream.cpp
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@ -383,4 +383,20 @@ void ReadableStream::set_up_with_byte_reading_support(GC::Ptr<PullAlgorithm> pul
MUST(set_up_readable_byte_stream_controller(*this, controller, start_algorithm, pull_algorithm_wrapper, cancel_algorithm_wrapper, high_water_mark, JS::js_undefined()));
}
// https://streams.spec.whatwg.org/#readablestream-pipe-through
GC::Ref<WebIDL::Promise> ReadableStream::piped_through(GC::Ref<WritableStream> writable, bool prevent_close, bool prevent_abort, bool prevent_cancel, JS::Value signal)
{
// 1. Assert: ! IsReadableStreamLocked(readable) is false.
VERIFY(!is_readable_stream_locked(*this));
// 2. Assert: ! IsWritableStreamLocked(writable) is false.
VERIFY(!is_writable_stream_locked(writable));
// 3. Let signalArg be signal if signal was given, or undefined otherwise.
// NOTE: Done by default arguments.
// 4. Return ! ReadableStreamPipeTo(readable, writable, preventClose, preventAbort, preventCancel, signalArg).
return readable_stream_pipe_to(*this, writable, prevent_close, prevent_abort, prevent_cancel, signal);
}
}