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LibWeb: Align some BYOB stream AOs with spec text/reality

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A couple of minor things I came across while debugging BYOB streams.
Adjust some spec text to match the latest spec, and use GC::Ref instead
of a raw pointer where applicable.
This commit is contained in:
Timothy Flynn 2025-04-14 18:23:18 -04:00 • committed by Tim Flynn
parent 9d33b3632f
commit f22fa827ec
Notes: github-actions[bot] 2025-04-14 23:58:01 +00:00
1 changed files with 26 additions and 10 deletions
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36
Libraries/LibWeb/Streams/AbstractOperations.cpp
View file

@ -2310,17 +2310,15 @@ void readable_byte_stream_controller_pull_into(ReadableByteStreamController& con
size_t element_size = 1;
// 3. Let ctor be %DataView%.
JS::NativeFunction* ctor = realm.intrinsics().data_view_constructor();
GC::Ref<JS::NativeFunction> ctor = realm.intrinsics().data_view_constructor();
// 4. If view has a [[TypedArrayName]] internal slot (i.e., it is not a DataView),
if (view.bufferable_object().has<GC::Ref<JS::TypedArrayBase>>()) {
auto const& typed_array = *view.bufferable_object().get<GC::Ref<JS::TypedArrayBase>>();
if (auto const* typed_array = view.bufferable_object().get_pointer<GC::Ref<JS::TypedArrayBase>>()) {
// 1. Set elementSize to the element size specified in the typed array constructors table for view.[[TypedArrayName]].
element_size = typed_array.element_size();
element_size = (*typed_array)->element_size();
// 2. Set ctor to the constructor specified in the typed array constructors table for view.[[TypedArrayName]].
switch (typed_array.kind()) {
switch ((*typed_array)->kind()) {
#define __JS_ENUMERATE(ClassName, snake_name, PrototypeName, ConstructorName, Type) \
case JS::TypedArrayBase::Kind::ClassName: \
ctor = realm.intrinsics().snake_name##_constructor(); \
@ -2361,8 +2359,26 @@ void readable_byte_stream_controller_pull_into(ReadableByteStreamController& con
// 9. Let buffer be bufferResult.[[Value]].
auto buffer = buffer_result.value();
// 10. Let pullIntoDescriptor be a new pull-into descriptor with buffer buffer, buffer byte length buffer.[[ArrayBufferByteLength]],
// byte offset byteOffset, byte length byteLength, bytes filled 0, element size elementSize, view constructor ctor, and reader type "byob".
// 10. Let pullIntoDescriptor be a new pull-into descriptor with
//
// buffer
// buffer
// buffer byte length
// buffer.[[ArrayBufferByteLength]]
// byte offset
// byteOffset
// byte length
// byteLength
// bytes filled
// 0
// minimum fill
// minimumFill
// element size
// elementSize
// view constructor
// ctor
// reader type
// "byob"
auto pull_into_descriptor = vm.heap().allocate<PullIntoDescriptor>(
buffer,
buffer->byte_length(),
@ -2457,9 +2473,9 @@ void readable_stream_byob_reader_read(ReadableStreamBYOBReader& reader, WebIDL::
if (stream->is_errored()) {
read_into_request.on_error(stream->stored_error());
}
// 5. Otherwise, perform ! ReadableByteStreamControllerPullInto(stream.[[controller]], view, readIntoRequest).
// 5. Otherwise, perform ! ReadableByteStreamControllerPullInto(stream.[[controller]], view, min, readIntoRequest).
else {
readable_byte_stream_controller_pull_into(*stream->controller()->get<GC::Ref<ReadableByteStreamController>>(), view, min, read_into_request);
readable_byte_stream_controller_pull_into(stream->controller()->get<GC::Ref<ReadableByteStreamController>>(), view, min, read_into_request);
}
}