Dom: Re-implement `ReadableStream` Part 1 : Default `Reader` and `Controller` (#34064)

* Re-implement readablestream: basics and default reader and controller

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Co-authored-by: Jason Tsai <jason@pews.dev>
Signed-off-by: Wu Wayne <yuweiwu@pm.me>

Add remaining WebIDLs of ReadableStream (#32605)

* Add Reader's WebIDL files

* Add necessary methods in ReadableStream.webidl

Signed-off-by: Wu Wayne <yuweiwu@pm.me>

Create safe wrapper for JSFunctions (#32620)

* Create safe wrapper for JSFunctions

Signed-off-by: Bentaimia Haddadi <haddadi.taym@gmail.com>

* Add assert to check if the  name ends in a null character

Signed-off-by: Bentaimia Haddadi <haddadi.taym@gmail.com>

* Create macro to wrap unsafe extern "C" function calls

Signed-off-by: Bentaimia Haddadi <haddadi.taym@gmail.com>

* Remove WRAPPER_FN

Signed-off-by: Bentaimia Haddadi <haddadi.taym@gmail.com>

* Add macro example documentation

Signed-off-by: Bentaimia Haddadi <haddadi.taym@gmail.com>

* Use  C-string literals

Signed-off-by: Bentaimia Haddadi <haddadi.taym@gmail.com>

* Ensure name is Cstr type

Signed-off-by: Bentaimia Haddadi <haddadi.taym@gmail.com>

* Scope #[allow(unsafe_code)]

Signed-off-by: Bentaimia Haddadi <haddadi.taym@gmail.com>

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Signed-off-by: Bentaimia Haddadi <haddadi.taym@gmail.com>
Signed-off-by: Wu Wayne <yuweiwu@pm.me>

Start implementation of default controller and reader

Start implementation of default controller and reader

* implement basic internal slots, with todos

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* enum for controller

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* re-implement native controller methods

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* add calling into pull algo

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* more details on chunk enqueuing

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* add fulfill read request, clean-up warnings

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* read request and reader typing

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* allow for more than one non-native underlying source type

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* add todo for should pull

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* add underlying source dom struct container

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* remove rc around source type

* add default controller init in stream constructor

* setup source container with prototype of source dict

* clean-up docs, dispatch of controller in pull algo call

* turn off SM streams

* remove prototype setting on underlying source container

* fix read request promise resolving

* tidy

* clean-up js conversions in read req handlers

* add queue with sizes concept

* use dom in pull promise handlers

* Demonstrate using dictionary as callback this object.

* move value with size to a struct

* fmt

* put readable stream state in a cell

* nits in expectations

* remove allow unroot by passing read result directly to promise resolving

* tidy

* root default controller inside call_pull_if_needed

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Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Co-authored-by: Josh Matthews <josh@joshmatthews.net>
Signed-off-by: Wu Wayne <yuweiwu@pm.me>

ReadableStream: implement Cancel and Locked (#33136)

* implement Locked

* implement Cancel and close

Signed-off-by: Wu Wayne <yuweiwu@pm.me>

Add GetPromiseIsHandled and SetAnyPromiseIsHandled to Promise

Signed-off-by: Taym <haddadi.taym@gmail.com>

mach fmt

Signed-off-by: Taym <haddadi.taym@gmail.com>

Readablestream default controller: get desired size (#33497)

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

stream: implement controller close (#33498)

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

implement stream default controller error (#33503)

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

Readablestream default controller: enqueue (#33528)

* Implement ReadableStreamDefaultControllerMethods::Enqueue

Signed-off-by: Wu Wayne <yuweiwu@pm.me>

* Add spec comments

Signed-off-by: Wu Wayne <yuweiwu@pm.me>

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Signed-off-by: Wu Wayne <yuweiwu@pm.me>

readablestream default controller: fulfill read requests (#33542)

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

Fix extract_size_algorithm (#33561)

Signed-off-by: Wu Wayne <yuweiwu@pm.me>

Readablestream default controller: use strategy size (#33551)

* readablestream default controller: use strategy size, fallible enqueue

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

docs

* readablestream default controller: clear strategy size

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* prevent potential re-borrow panics when calling into the strategy size

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* document readablestream constructor

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

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Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

Readablestream: impl default controller should pull, start algo (#33586)

* implement should-pull algo for default controller

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* add start algorithm setup for default controller

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

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Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

implement promise native handling for start and pull algorithms (#33603)

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

Implement ReadableStreamDefaultReader (#33160)

* Implement ReadableStreamDefaultReader

 Make the stream mutable
 readable-stream-reader-generic-release
 Proper error types when releasing
 Closed
 Cancel

Signed-off-by: Taym <haddadi.taym@gmail.com>

* follow the spec more closely

Signed-off-by: Taym <haddadi.taym@gmail.com>

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Signed-off-by: Taym <haddadi.taym@gmail.com>

Implement ReadableStreamDefaultReader read (#34007)

* Implement ReadableStreamDefaultReader read

Signed-off-by: Taym <haddadi.taym@gmail.com>

* Perform readRequest’s error steps with stream.stored_error

Signed-off-by: Taym <haddadi.taym@gmail.com>

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Signed-off-by: Taym <haddadi.taym@gmail.com>

Improve ReadableStreamDefaultReader close (#34014)

* improve ReadableStreamDefaultReader close

Signed-off-by: Taym <haddadi.taym@gmail.com>

* remove resolve_closed_promise

Signed-off-by: Taym <haddadi.taym@gmail.com>

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Signed-off-by: Taym <haddadi.taym@gmail.com>

Use Rc<Box<[u8]>> for queue to optimize get_in_memory_bytes

Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>

* Improve read_a_chunk and stop_reading implemntation (#34077)

Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Implement ReadableStreamDefaultReader::Constructor  (#34056)

* Implement ReadableStreamDefaultReader::Constructor

Signed-off-by: Taym <haddadi.taym@gmail.com>

* make start_reading returns ReadableStreamDefaultReader

Signed-off-by: Taym <haddadi.taym@gmail.com>

* Fix can_gc
Signed-off-by: Taym <haddadi.taym@gmail.com>

* Add canGc to ReadableStream::GetReader

Signed-off-by: Taym <haddadi.taym@gmail.com>

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Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Readablestream fix CanGc (#34080)

Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* correct ReadableStream::error_native implementation and fix clippy warnings (#34088)

Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* turn assertion of stream present on controller on a early return with false (#34097)

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Fix already mutably borrowed crash (#34105)

Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Refactor `get_in_memory_bytes` to return `Option<Vec<u8>> and avoid `unreachable!` panic (#34123)

Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Set ReadableStream ReadableStreamDefaultReader in start_reading (#34125)

Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Fix  Unhandled rejection with value: object `TypeError: stream is not locked` (#34204)

Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Fix  assert!(self.is_readable()) crash in ReadableStream::close (#34207)

Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* fix call to to_js_object in underlying source algos (#34098)

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* do not assume presence of a stream when performing pull steps (#34244)

* do not assume presence of a stream when performing pull steps

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* add doc comments

Co-authored-by: Taym Haddadi <haddadi.taym@gmail.com>
Signed-off-by: Gregory Terzian <2792687+gterzian@users.noreply.github.com>

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Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Gregory Terzian <2792687+gterzian@users.noreply.github.com>
Co-authored-by: Taym Haddadi <haddadi.taym@gmail.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* gracefully handle failure of underlying source algorithms (#34243)

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* ensure result of calling start algo is an object (#34245)

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* return js failed error if underlying source constructor threw (#34246)

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Use JSVal for ValueWithSize::value (#34259)

Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* fix release reader lock, (#34255)

fix setting stream on controller in new,
fix matching fallthrough,
reduce visibility of controller error method

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* in stream cancel, reject promist if locked (#34271)

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Fix UnderlyingSourceContainer::call_start_algorithm (#34277)

Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* implement controller cancel steps, fix stream cancel method (#34301)

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* fix conditional in perform pull steps (#34324)

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* set reader closed promise to one resolved with undefined if stream closed on init (#34321)

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* fix init of stream and controller (#34323)

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Stream: Fix reborrow in controller enqueue, and fix error and exception handling. (#34338)

* fix re-borrow in controller enqueue

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* do not call to_jsval on JSFailed error in enqueue

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* fix error and exception handling in controller enqueue

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* remove TODO about correctness of stored error, since this was done as part of the switch to a js val.

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

---------

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Stream: Fix incorrect "this" object in underlying source callbacks (#34368)

* in controller close, throw type error if stream cannot be closed

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* store original js object for underlying source, for use as this object in callbacks

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

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Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* fix conditional logic in enqueue to ensure pull is called into (#34375)

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Stream: Fix bytelength queueing strategy (#34376)

* fix handling of value that is not an object in bytelength queuing strategy

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* return type error if strategy size call fails, to prevent panic because no exception is pending

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

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Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* set correct  default count queuing size strategy (#34389)

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* use proto in stream constructor (#34441)

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* fix edge cases in get_desired_size (#34440)

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Stream: fix algo and strategy calls error handling. (#34424)

* fix error handling in cancel steps

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* in pull steps, reject promise if pull algo throws

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* if start algorithm fails, rethrow the error

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* when the strategy size fails, directly get the pending exception and use it to error the stream

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* add error handling to enqueue value with size

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* when enqueueing a value errors, ensure we error and stream with the same error used to throw an exception

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

---------

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* fix native use of streams (#34468)

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Implement readablestreamdefaulttee (#34405)

* Implement readablestreamdefaulttee

Signed-off-by: Taym <haddadi.taym@gmail.com>

* Create UnderlyingSourceType::Tee each stream

Signed-off-by: Taym <haddadi.taym@gmail.com>

* Use Dom instead of DomRoot

Signed-off-by: Taym <haddadi.taym@gmail.com>

* Queue a microtask for readRequest chunk steps

Signed-off-by: Taym <haddadi.taym@gmail.com>

* fix create_readable_stream

Signed-off-by: Taym <haddadi.taym@gmail.com>

* Remove unnecessary Rc

Signed-off-by: Taym <haddadi.taym@gmail.com>

* Use correct doc link

Signed-off-by: Taym <haddadi.taym@gmail.com>

* Add #[allow(crown::unrooted_must_root)]

Signed-off-by: Taym <haddadi.taym@gmail.com>

* Fix crash in ClosedPromiseRejectionHandler

Signed-off-by: Taym <haddadi.taym@gmail.com>

* reflect TeeReadRequest and TeeUnderlyingSource
Signed-off-by: Taym <haddadi.taym@gmail.com>

* fix can_gc

Signed-off-by: Taym <haddadi.taym@gmail.com>

* reflect tee source, and fix use of mutable dom for tee source and request

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* Fix typo that resolves multiple test failures in 'Tee' tests

Signed-off-by: Taym <haddadi.taym@gmail.com>

* Fix readable-streams/tee.any.js test

Signed-off-by: Taym <haddadi.taym@gmail.com>

---------

Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Co-authored-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Align ReadableStreamDefaultReader with spec and fix additional tests in default-reader.any.js (#34531)

And fix crate::DomTypeHolder usage

* Align ReadableStreamDefaultReader with spec and fix additional tests in default-reader.any.js

Signed-off-by: Taym <haddadi.taym@gmail.com>

* make reader rooted in Constructor and acquire_default_reader

Signed-off-by: Taym <haddadi.taym@gmail.com>

* Remove spaces

Signed-off-by: Taym <haddadi.taym@gmail.com>

---------

Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Streams: fetch stream chunks should be uint8 arrays (#34553)

* fetch stream chunks should be uint8 arrays

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

* fix clippy

Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

---------

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>
Co-authored-by: Taym Haddadi <haddadi.taym@gmail.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Update wpt test for ReadableStream reimplementation (#34579)

Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Fix ignore_malloc_size_of in readablestream tee (#34578)

Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Remove incorrect use of handle array, fail test safely by giving only one reason (#34560)

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Update more wpt test for ReadableStream reimplementation (#34598)

Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Fix doc and rename Tee to DefaultTee (#34612)

Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* fix: Address review comments

Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Update response-stream-with-broken-then.any.js.ini test expectation

Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* fix reflect_dom_object can_gc

Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Fix compositeReason for DefaultTeeUnderlyingSource (#34627)

* Fix compositeReason for DefaultTeeUnderlyingSource

Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Update test

Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

---------

Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>

* Last fixes stream (#34636)

* remove now unsused from_js method of readable stream

* fix documenation of error steps

* return type error instread of panicking on a todo, when trying to construct a stream of type bytes

Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>

---------

Signed-off-by: Gregory Terzian <2792687+gterzian@users.noreply.github.com>

* fix crown rooting related errors (#34662)

Signed-off-by: Gregory Terzian <2792687+gterzian@users.noreply.github.com>

---------

Signed-off-by: Taym <haddadi.taym@gmail.com>
Signed-off-by: gterzian <2792687+gterzian@users.noreply.github.com>
Signed-off-by: Taym Haddadi <haddadi.taym@gmail.com>
Signed-off-by: Gregory Terzian <2792687+gterzian@users.noreply.github.com>
Co-authored-by: Wu Wayne <yuweiwu@pm.me>
Co-authored-by: Taym Haddadi <haddadi.taym@gmail.com>

1 files changed, 238 insertions, 0 deletions

diff --git a/components/script/dom/defaultteereadrequest.rs b/components/script/dom/defaultteereadrequest.rs
new file mode 100644
index 00000000000..dfe5b22d045
--- /dev/null
+++ b/components/script/dom/defaultteereadrequest.rs
@@ -0,0 +1,238 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use std::cell::Cell;
+use std::rc::Rc;
+
+use dom_struct::dom_struct;
+use js::jsapi::Heap;
+use js::jsval::{JSVal, UndefinedValue};
+use js::rust::HandleValue as SafeHandleValue;
+
+use super::bindings::reflector::reflect_dom_object;
+use super::bindings::root::DomRoot;
+use super::bindings::structuredclone;
+use crate::dom::bindings::reflector::{DomObject, Reflector};
+use crate::dom::bindings::root::Dom;
+use crate::dom::bindings::trace::RootedTraceableBox;
+use crate::dom::defaultteeunderlyingsource::DefaultTeeUnderlyingSource;
+use crate::dom::globalscope::GlobalScope;
+use crate::dom::promise::Promise;
+use crate::dom::readablestream::ReadableStream;
+use crate::microtask::Microtask;
+use crate::script_runtime::CanGc;
+
+#[derive(JSTraceable, MallocSizeOf)]
+#[allow(crown::unrooted_must_root)]
+pub struct DefaultTeeReadRequestMicrotask {
+    #[ignore_malloc_size_of = "mozjs"]
+    chunk: Box<Heap<JSVal>>,
+    tee_read_request: Dom<DefaultTeeReadRequest>,
+}
+
+impl DefaultTeeReadRequestMicrotask {
+    pub fn microtask_chunk_steps(&self, can_gc: CanGc) {
+        self.tee_read_request.chunk_steps(&self.chunk, can_gc)
+    }
+}
+
+#[dom_struct]
+/// <https://streams.spec.whatwg.org/#ref-for-read-request%E2%91%A2>
+pub struct DefaultTeeReadRequest {
+    reflector_: Reflector,
+    stream: Dom<ReadableStream>,
+    branch_1: Dom<ReadableStream>,
+    branch_2: Dom<ReadableStream>,
+    #[ignore_malloc_size_of = "Rc"]
+    reading: Rc<Cell<bool>>,
+    #[ignore_malloc_size_of = "Rc"]
+    read_again: Rc<Cell<bool>>,
+    #[ignore_malloc_size_of = "Rc"]
+    canceled_1: Rc<Cell<bool>>,
+    #[ignore_malloc_size_of = "Rc"]
+    canceled_2: Rc<Cell<bool>>,
+    #[ignore_malloc_size_of = "Rc"]
+    clone_for_branch_2: Rc<Cell<bool>>,
+    #[ignore_malloc_size_of = "Rc"]
+    cancel_promise: Rc<Promise>,
+    tee_underlying_source: Dom<DefaultTeeUnderlyingSource>,
+}
+impl DefaultTeeReadRequest {
+    #[allow(clippy::too_many_arguments)]
+    #[allow(crown::unrooted_must_root)]
+    pub fn new(
+        stream: &ReadableStream,
+        branch_1: &ReadableStream,
+        branch_2: &ReadableStream,
+        reading: Rc<Cell<bool>>,
+        read_again: Rc<Cell<bool>>,
+        canceled_1: Rc<Cell<bool>>,
+        canceled_2: Rc<Cell<bool>>,
+        clone_for_branch_2: Rc<Cell<bool>>,
+        cancel_promise: Rc<Promise>,
+        tee_underlying_source: &DefaultTeeUnderlyingSource,
+        can_gc: CanGc,
+    ) -> DomRoot<Self> {
+        reflect_dom_object(
+            Box::new(DefaultTeeReadRequest {
+                reflector_: Reflector::new(),
+                stream: Dom::from_ref(stream),
+                branch_1: Dom::from_ref(branch_1),
+                branch_2: Dom::from_ref(branch_2),
+                reading,
+                read_again,
+                canceled_1,
+                canceled_2,
+                clone_for_branch_2,
+                cancel_promise,
+                tee_underlying_source: Dom::from_ref(tee_underlying_source),
+            }),
+            &*stream.global(),
+            can_gc,
+        )
+    }
+    /// Call into cancel of the stream,
+    /// <https://streams.spec.whatwg.org/#readable-stream-cancel>
+    pub fn stream_cancel(&self, reason: SafeHandleValue, can_gc: CanGc) {
+        self.stream.cancel(reason, can_gc);
+    }
+    /// Enqueue a microtask to perform the chunk steps
+    /// <https://streams.spec.whatwg.org/#ref-for-read-request-chunk-steps%E2%91%A2>
+    pub fn enqueue_chunk_steps(&self, chunk: RootedTraceableBox<Heap<JSVal>>) {
+        // Queue a microtask to perform the following steps:
+        let tee_read_request_chunk = DefaultTeeReadRequestMicrotask {
+            chunk: Heap::boxed(*chunk.handle()),
+            tee_read_request: Dom::from_ref(self),
+        };
+        let global = self.stream.global();
+        let microtask_queue = global.microtask_queue();
+        let cx = GlobalScope::get_cx();
+        microtask_queue.enqueue(
+            Microtask::ReadableStreamTeeReadRequest(tee_read_request_chunk),
+            cx,
+        );
+    }
+    /// <https://streams.spec.whatwg.org/#ref-for-read-request-chunk-steps%E2%91%A2>
+    #[allow(unsafe_code)]
+    #[allow(clippy::borrowed_box)]
+    pub fn chunk_steps(&self, chunk: &Box<Heap<JSVal>>, can_gc: CanGc) {
+        // Set readAgain to false.
+        self.read_again.set(false);
+        // Let chunk1 and chunk2 be chunk.
+        let chunk1 = chunk;
+        let chunk2 = chunk;
+        // If canceled_2 is false and cloneForBranch2 is true,
+        if !self.canceled_2.get() && self.clone_for_branch_2.get() {
+            let cx = GlobalScope::get_cx();
+            // Let cloneResult be StructuredClone(chunk2).
+            rooted!(in(*cx) let mut clone_result = UndefinedValue());
+            let data = structuredclone::write(
+                cx,
+                unsafe { SafeHandleValue::from_raw(chunk2.handle()) },
+                None,
+            )
+            .unwrap();
+            // If cloneResult is an abrupt completion,
+            if structuredclone::read(&self.stream.global(), data, clone_result.handle_mut())
+                .is_err()
+            {
+                // Perform ! ReadableStreamDefaultControllerError(branch_1.[[controller]], cloneResult.[[Value]]).
+                self.readable_stream_default_controller_error(
+                    &self.branch_1,
+                    clone_result.handle(),
+                );
+
+                // Perform ! ReadableStreamDefaultControllerError(branch_2.[[controller]], cloneResult.[[Value]]).
+                self.readable_stream_default_controller_error(
+                    &self.branch_2,
+                    clone_result.handle(),
+                );
+                // Resolve cancelPromise with ! ReadableStreamCancel(stream, cloneResult.[[Value]]).
+                self.stream_cancel(clone_result.handle(), can_gc);
+                // Return.
+                return;
+            } else {
+                // Otherwise, set chunk2 to cloneResult.[[Value]].
+                chunk2.set(*clone_result);
+            }
+        }
+        // If canceled_1 is false, perform ! ReadableStreamDefaultControllerEnqueue(branch_1.[[controller]], chunk1).
+        if !self.canceled_1.get() {
+            self.readable_stream_default_controller_enqueue(
+                &self.branch_1,
+                unsafe { SafeHandleValue::from_raw(chunk1.handle()) },
+                can_gc,
+            );
+        }
+        // If canceled_2 is false, perform ! ReadableStreamDefaultControllerEnqueue(branch_2.[[controller]], chunk2).
+        if !self.canceled_2.get() {
+            self.readable_stream_default_controller_enqueue(
+                &self.branch_2,
+                unsafe { SafeHandleValue::from_raw(chunk2.handle()) },
+                can_gc,
+            );
+        }
+        // Set reading to false.
+        self.reading.set(false);
+        // If readAgain is true, perform pullAlgorithm.
+        if self.read_again.get() {
+            self.pull_algorithm(can_gc);
+        }
+    }
+    /// <https://streams.spec.whatwg.org/#read-request-close-steps>
+    pub fn close_steps(&self) {
+        // Set reading to false.
+        self.reading.set(false);
+        // If canceled_1 is false, perform ! ReadableStreamDefaultControllerClose(branch_1.[[controller]]).
+        if !self.canceled_1.get() {
+            self.readable_stream_default_controller_close(&self.branch_1);
+        }
+        // If canceled_2 is false, perform ! ReadableStreamDefaultControllerClose(branch_2.[[controller]]).
+        if !self.canceled_2.get() {
+            self.readable_stream_default_controller_close(&self.branch_2);
+        }
+        // If canceled_1 is false or canceled_2 is false, resolve cancelPromise with undefined.
+        if !self.canceled_1.get() || !self.canceled_2.get() {
+            self.cancel_promise.resolve_native(&());
+        }
+    }
+    /// <https://streams.spec.whatwg.org/#read-request-error-steps>
+    pub fn error_steps(&self) {
+        // Set reading to false.
+        self.reading.set(false);
+    }
+    /// Call into enqueue of the default controller of a stream,
+    /// <https://streams.spec.whatwg.org/#readable-stream-default-controller-enqueue>
+    fn readable_stream_default_controller_enqueue(
+        &self,
+        stream: &ReadableStream,
+        chunk: SafeHandleValue,
+        can_gc: CanGc,
+    ) {
+        stream
+            .get_default_controller()
+            .enqueue(GlobalScope::get_cx(), chunk, can_gc)
+            .expect("enqueue failed for stream controller in DefaultTeeReadRequest");
+    }
+
+    /// Call into close of the default controller of a stream,
+    /// <https://streams.spec.whatwg.org/#readable-stream-default-controller-close>
+    fn readable_stream_default_controller_close(&self, stream: &ReadableStream) {
+        stream.get_default_controller().close();
+    }
+
+    /// Call into error of the default controller of stream,
+    /// <https://streams.spec.whatwg.org/#readable-stream-default-controller-error>
+    fn readable_stream_default_controller_error(
+        &self,
+        stream: &ReadableStream,
+        error: SafeHandleValue,
+    ) {
+        stream.get_default_controller().error(error);
+    }
+
+    pub fn pull_algorithm(&self, can_gc: CanGc) {
+        self.tee_underlying_source.pull_algorithm(can_gc);
+    }
+}