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Start adding support for transforms in readable and writable streams (#36470)

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Start adding support for transforms in readable and writable streams.
Part of https://github.com/servo/servo/issues/34676
This commit is contained in:
Taym Haddadi 2025-04-28 13:02:55 +02:00 • committed by GitHub
parent 02b38adf43
commit 4d975e947b
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GPG key ID: B5690EEEBB952194
13 changed files with 394 additions and 161 deletions
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15
components/script/dom/defaultteeunderlyingsource.rs
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@ -19,7 +19,7 @@ use crate::dom::defaultteereadrequest::DefaultTeeReadRequest;
use crate::dom::globalscope::GlobalScope;
use crate::dom::promise::Promise;
use crate::dom::readablestreamdefaultreader::ReadRequest;
use crate::script_runtime::CanGc;
use crate::script_runtime::{CanGc, JSContext as SafeJSContext};
#[derive(JSTraceable, MallocSizeOf)]
pub(crate) enum TeeCancelAlgorithm {
@ -156,6 +156,8 @@ impl DefaultTeeUnderlyingSource {
#[allow(unsafe_code)]
pub(crate) fn cancel_algorithm(
&self,
cx: SafeJSContext,
global: &GlobalScope,
reason: SafeHandleValue,
can_gc: CanGc,
) -> Option<Result<Rc<Promise>, Error>> {
@ -169,7 +171,7 @@ impl DefaultTeeUnderlyingSource {
// If canceled_2 is true,
if self.canceled_2.get() {
self.resolve_cancel_promise(can_gc);
self.resolve_cancel_promise(cx, global, can_gc);
}
// Return cancelPromise.
Some(Ok(self.cancel_promise.clone()))
@ -183,7 +185,7 @@ impl DefaultTeeUnderlyingSource {
// If canceled_1 is true,
if self.canceled_1.get() {
self.resolve_cancel_promise(can_gc);
self.resolve_cancel_promise(cx, global, can_gc);
}
// Return cancelPromise.
Some(Ok(self.cancel_promise.clone()))
@ -192,9 +194,8 @@ impl DefaultTeeUnderlyingSource {
}
#[allow(unsafe_code)]
fn resolve_cancel_promise(&self, can_gc: CanGc) {
fn resolve_cancel_promise(&self, cx: SafeJSContext, global: &GlobalScope, can_gc: CanGc) {
// Let compositeReason be ! CreateArrayFromList(« reason_1, reason_2 »).
let cx = GlobalScope::get_cx();
rooted_vec!(let mut reasons_values);
reasons_values.push(self.reason_1.get());
reasons_values.push(self.reason_2.get());
@ -204,7 +205,9 @@ impl DefaultTeeUnderlyingSource {
rooted!(in(*cx) let reasons_value = ObjectValue(reasons.get()));
// Let cancelResult be ! ReadableStreamCancel(stream, compositeReason).
let cancel_result = self.stream.cancel(reasons_value.handle(), can_gc);
let cancel_result = self
.stream
.cancel(cx, global, reasons_value.handle(), can_gc);
// Resolve cancelPromise with cancelResult.
self.cancel_promise.resolve_native(&cancel_result, can_gc);