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Streams: add an underlying sink type (#36385)

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Introduces the concept of different types of underlying sinks for the
writable controller, and a minor fix to the abort algorithm.

The dead code is already used in the wip at
https://github.com/servo/servo/pull/36181/, and will also be used in a
another wip in parallel to implement transform stream, so the concept is
introduced here with dead code to facilitate the work in parallel and
prevent too much merge conflicts down the road.

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
This commit is contained in:
Gregory Terzian 2025-04-08 00:48:42 +08:00 • committed by GitHub
parent 777b74252a
commit a5c547259f
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2 changed files with 105 additions and 50 deletions
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7
components/script/dom/writablestream.rs
View file

@ -28,7 +28,9 @@ use crate::dom::countqueuingstrategy::{extract_high_water_mark, extract_size_alg
use crate::dom::globalscope::GlobalScope;
use crate::dom::promise::Promise;
use crate::dom::promisenativehandler::{Callback, PromiseNativeHandler};
use crate::dom::writablestreamdefaultcontroller::WritableStreamDefaultController;
use crate::dom::writablestreamdefaultcontroller::{
UnderlyingSinkType, WritableStreamDefaultController,
};
use crate::dom::writablestreamdefaultwriter::WritableStreamDefaultWriter;
use crate::realms::{InRealm, enter_realm};
use crate::script_runtime::{CanGc, JSContext as SafeJSContext};
@ -155,7 +157,7 @@ pub struct WritableStream {
impl WritableStream {
#[cfg_attr(crown, allow(crown::unrooted_must_root))]
/// <https://streams.spec.whatwg.org/#initialize-readable-stream>
/// <https://streams.spec.whatwg.org/#initialize-writable-stream>
fn new_inherited() -> WritableStream {
WritableStream {
reflector_: Reflector::new(),
@ -879,6 +881,7 @@ impl WritableStreamMethods<crate::DomTypeHolder> for WritableStream {
// Perform ? SetUpWritableStreamDefaultControllerFromUnderlyingSink
let controller = WritableStreamDefaultController::new(
global,
UnderlyingSinkType::Js,
&underlying_sink_dict,
high_water_mark,
size_algorithm,