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LibJS: Make Heap::allocate<T>() infallible

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Stop worrying about tiny OOMs. Work towards #20449.

While going through these, I also changed the function signature in many
places where returning ThrowCompletionOr<T> is no longer necessary.
This commit is contained in:
Andreas Kling 2023-08-13 13:05:26 +02:00
parent 980e7164fe
commit 72c9f56c66
337 changed files with 1229 additions and 1251 deletions
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2
Userland/Libraries/LibWeb/Fetch/Body.cpp
View file

@ -113,7 +113,7 @@ WebIDL::ExceptionOr<JS::Value> package_data(JS::Realm& realm, ByteBuffer bytes,
// Return a Blob whose contents are bytes and type attribute is mimeType.
// NOTE: If extracting the mime type returns failure, other browsers set it to an empty string - not sure if that's spec'd.
auto mime_type_string = mime_type.has_value() ? TRY_OR_THROW_OOM(vm, mime_type->serialized()) : String {};
return TRY(FileAPI::Blob::create(realm, move(bytes), move(mime_type_string)));
return FileAPI::Blob::create(realm, move(bytes), move(mime_type_string));
}
case PackageDataType::FormData:
// If mimeType’s essence is "multipart/form-data", then:

4
Userland/Libraries/LibWeb/Fetch/BodyInit.cpp
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@ -45,12 +45,12 @@ WebIDL::ExceptionOr<Infrastructure::BodyWithType> extract_body(JS::Realm& realm,
else if (auto const* blob_handle = object.get_pointer<JS::Handle<FileAPI::Blob>>()) {
// FIXME: "set stream to the result of running object’s get stream"
(void)blob_handle;
stream = MUST_OR_THROW_OOM(realm.heap().allocate<Streams::ReadableStream>(realm, realm));
stream = realm.heap().allocate<Streams::ReadableStream>(realm, realm);
}
// 4. Otherwise, set stream to a new ReadableStream object, and set up stream.
else {
// FIXME: "set up stream"
stream = MUST_OR_THROW_OOM(realm.heap().allocate<Streams::ReadableStream>(realm, realm));
stream = realm.heap().allocate<Streams::ReadableStream>(realm, realm);
}
// 5. Assert: stream is a ReadableStream object.

2
Userland/Libraries/LibWeb/Fetch/FetchMethod.cpp
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@ -111,7 +111,7 @@ JS::NonnullGCPtr<JS::Promise> fetch(JS::VM& vm, RequestInfo const& input, Reques
// 4. Set responseObject to the result of creating a Response object, given response, "immutable", and
// relevantRealm.
auto response_object = Response::create(relevant_realm, response, Headers::Guard::Immutable).release_value_but_fixme_should_propagate_errors();
auto response_object = Response::create(relevant_realm, response, Headers::Guard::Immutable);
response_object_handle = JS::make_handle(response_object);
// 5. Resolve p with responseObject.

4
Userland/Libraries/LibWeb/Fetch/Fetching/Fetching.cpp
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@ -859,7 +859,7 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<PendingResponse>> http_fetch(JS::Realm& rea
// 4. If request’s service-workers mode is "all", then:
if (request->service_workers_mode() == Infrastructure::Request::ServiceWorkersMode::All) {
// 1. Let requestForServiceWorker be a clone of request.
auto request_for_service_worker = TRY(request->clone(realm));
auto request_for_service_worker = request->clone(realm);
// 2. If requestForServiceWorker’s body is non-null, then:
if (!request_for_service_worker->body().has<Empty>()) {
@ -1262,7 +1262,7 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<PendingResponse>> http_network_or_cache_fet
// NOTE: Implementations are encouraged to avoid teeing request’s body’s stream when request’s body’s
// source is null as only a single body is needed in that case. E.g., when request’s body’s source
// is null, redirects and authentication will end up failing the fetch.
http_request = TRY(request->clone(realm));
http_request = request->clone(realm);
// 2. Set httpFetchParams to a copy of fetchParams.
// 3. Set httpFetchParams’s request to httpRequest.

2
Userland/Libraries/LibWeb/Fetch/Headers.cpp
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@ -17,7 +17,7 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<Headers>> Headers::construct_impl(JS::Realm
auto& vm = realm.vm();
// The new Headers(init) constructor steps are:
auto headers = MUST_OR_THROW_OOM(realm.heap().allocate<Headers>(realm, realm, Infrastructure::HeaderList::create(vm)));
auto headers = realm.heap().allocate<Headers>(realm, realm, Infrastructure::HeaderList::create(vm));
// 1. Set this’s guard to "none".
headers->m_guard = Guard::None;

6
Userland/Libraries/LibWeb/Fetch/HeadersIterator.cpp
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@ -15,7 +15,7 @@ namespace Web::Bindings {
template<>
void Intrinsics::create_web_prototype_and_constructor<HeadersIteratorPrototype>(JS::Realm& realm)
{
auto prototype = heap().allocate<HeadersIteratorPrototype>(realm, realm).release_allocated_value_but_fixme_should_propagate_errors();
auto prototype = heap().allocate<HeadersIteratorPrototype>(realm, realm);
m_prototypes.set("HeadersIterator"sv, prototype);
}
@ -23,9 +23,9 @@ void Intrinsics::create_web_prototype_and_constructor<HeadersIteratorPrototype>(
namespace Web::Fetch {
WebIDL::ExceptionOr<JS::NonnullGCPtr<HeadersIterator>> HeadersIterator::create(Headers const& headers, JS::Object::PropertyKind iteration_kind)
JS::NonnullGCPtr<HeadersIterator> HeadersIterator::create(Headers const& headers, JS::Object::PropertyKind iteration_kind)
{
return MUST_OR_THROW_OOM(headers.heap().allocate<HeadersIterator>(headers.realm(), headers, iteration_kind));
return headers.heap().allocate<HeadersIterator>(headers.realm(), headers, iteration_kind);
}
HeadersIterator::HeadersIterator(Headers const& headers, JS::Object::PropertyKind iteration_kind)

2
Userland/Libraries/LibWeb/Fetch/HeadersIterator.h
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@ -16,7 +16,7 @@ class HeadersIterator final : public Bindings::PlatformObject {
WEB_PLATFORM_OBJECT(HeadersIterator, Bindings::PlatformObject);
public:
static WebIDL::ExceptionOr<JS::NonnullGCPtr<HeadersIterator>> create(Headers const&, JS::Object::PropertyKind iteration_kind);
[[nodiscard]] static JS::NonnullGCPtr<HeadersIterator> create(Headers const&, JS::Object::PropertyKind iteration_kind);
virtual ~HeadersIterator() override;

4
Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Bodies.cpp
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@ -26,12 +26,12 @@ Body::Body(JS::Handle<Streams::ReadableStream> stream, SourceType source, Option
}
// https://fetch.spec.whatwg.org/#concept-body-clone
WebIDL::ExceptionOr<Body> Body::clone(JS::Realm& realm) const
Body Body::clone(JS::Realm& realm) const
{
// To clone a body body, run these steps:
// FIXME: 1. Let « out1, out2 » be the result of teeing body’s stream.
// FIXME: 2. Set body’s stream to out1.
auto out2 = MUST_OR_THROW_OOM(realm.heap().allocate<Streams::ReadableStream>(realm, realm));
auto out2 = realm.heap().allocate<Streams::ReadableStream>(realm, realm);
// 3. Return a body whose stream is out2 and other members are copied from body.
return Body { JS::make_handle(out2), m_source, m_length };

2
Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Bodies.h
View file

@ -36,7 +36,7 @@ public:
[[nodiscard]] SourceType const& source() const { return m_source; }
[[nodiscard]] Optional<u64> const& length() const { return m_length; }
WebIDL::ExceptionOr<Body> clone(JS::Realm&) const;
[[nodiscard]] Body clone(JS::Realm&) const;
WebIDL::ExceptionOr<void> fully_read(JS::Realm&, ProcessBodyCallback process_body, ProcessBodyErrorCallback process_body_error, TaskDestination task_destination) const;

4
Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Requests.cpp
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@ -202,7 +202,7 @@ ErrorOr<ByteBuffer> Request::byte_serialize_origin() const
}
// https://fetch.spec.whatwg.org/#concept-request-clone
WebIDL::ExceptionOr<JS::NonnullGCPtr<Request>> Request::clone(JS::Realm& realm) const
JS::NonnullGCPtr<Request> Request::clone(JS::Realm& realm) const
{
// To clone a request request, run these steps:
auto& vm = realm.vm();
@ -250,7 +250,7 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<Request>> Request::clone(JS::Realm& realm)
// 2. If request’s body is non-null, set newRequest’s body to the result of cloning request’s body.
if (auto const* body = m_body.get_pointer<Body>())
new_request->set_body(TRY(body->clone(realm)));
new_request->set_body(body->clone(realm));
// 3. Return newRequest.
return new_request;

2
Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Requests.h
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@ -297,7 +297,7 @@ public:
[[nodiscard]] ErrorOr<String> serialize_origin() const;
[[nodiscard]] ErrorOr<ByteBuffer> byte_serialize_origin() const;
[[nodiscard]] WebIDL::ExceptionOr<JS::NonnullGCPtr<Request>> clone(JS::Realm&) const;
[[nodiscard]] JS::NonnullGCPtr<Request> clone(JS::Realm&) const;
[[nodiscard]] ErrorOr<void> add_range_header(u64 first, Optional<u64> const& last);
[[nodiscard]] ErrorOr<void> add_origin_header();

2
Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Responses.cpp
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@ -164,7 +164,7 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<Response>> Response::clone(JS::Realm& realm
// 3. If response’s body is non-null, then set newResponse’s body to the result of cloning response’s body.
if (m_body.has_value())
new_response->set_body(TRY(m_body->clone(realm)));
new_response->set_body(m_body->clone(realm));
// 4. Return newResponse.
return new_response;

18
Userland/Libraries/LibWeb/Fetch/Request.cpp
View file

@ -79,18 +79,18 @@ Optional<Infrastructure::Body&> Request::body_impl()
}
// https://fetch.spec.whatwg.org/#request-create
WebIDL::ExceptionOr<JS::NonnullGCPtr<Request>> Request::create(JS::Realm& realm, JS::NonnullGCPtr<Infrastructure::Request> request, Headers::Guard guard)
JS::NonnullGCPtr<Request> Request::create(JS::Realm& realm, JS::NonnullGCPtr<Infrastructure::Request> request, Headers::Guard guard)
{
// 1. Let requestObject be a new Request object with realm.
// 2. Set requestObject’s request to request.
auto request_object = MUST_OR_THROW_OOM(realm.heap().allocate<Request>(realm, realm, request));
auto request_object = realm.heap().allocate<Request>(realm, realm, request);
// 3. Set requestObject’s headers to a new Headers object with realm, whose headers list is request’s headers list and guard is guard.
request_object->m_headers = MUST_OR_THROW_OOM(realm.heap().allocate<Headers>(realm, realm, request->header_list()));
request_object->m_headers = realm.heap().allocate<Headers>(realm, realm, request->header_list());
request_object->m_headers->set_guard(guard);
// 4. Set requestObject’s signal to a new AbortSignal object with realm.
request_object->m_signal = MUST_OR_THROW_OOM(realm.heap().allocate<DOM::AbortSignal>(realm, realm));
request_object->m_signal = realm.heap().allocate<DOM::AbortSignal>(realm, realm);
// 5. Return requestObject.
return request_object;
@ -102,7 +102,7 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<Request>> Request::construct_impl(JS::Realm
auto& vm = realm.vm();
// Referred to as 'this' in the spec.
auto request_object = MUST_OR_THROW_OOM(realm.heap().allocate<Request>(realm, realm, Infrastructure::Request::create(vm)));
auto request_object = realm.heap().allocate<Request>(realm, realm, Infrastructure::Request::create(vm));
// 1. Let request be null.
JS::GCPtr<Infrastructure::Request> input_request;
@ -387,14 +387,14 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<Request>> Request::construct_impl(JS::Realm
// 28. Set this’s signal to a new AbortSignal object with this’s relevant Realm.
auto& this_relevant_realm = HTML::relevant_realm(*request_object);
request_object->m_signal = MUST_OR_THROW_OOM(realm.heap().allocate<DOM::AbortSignal>(this_relevant_realm, this_relevant_realm));
request_object->m_signal = realm.heap().allocate<DOM::AbortSignal>(this_relevant_realm, this_relevant_realm);
// 29. If signal is not null, then make this’s signal follow signal.
if (input_signal != nullptr)
request_object->m_signal->follow(*input_signal);
// 30. Set this’s headers to a new Headers object with this’s relevant Realm, whose header list is request’s header list and guard is "request".
request_object->m_headers = MUST_OR_THROW_OOM(realm.heap().allocate<Headers>(realm, realm, request->header_list()));
request_object->m_headers = realm.heap().allocate<Headers>(realm, realm, request->header_list());
request_object->m_headers->set_guard(Headers::Guard::Request);
// 31. If this’s request’s mode is "no-cors", then:
@ -639,10 +639,10 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<Request>> Request::clone() const
return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, "Request is unusable"sv };
// 2. Let clonedRequest be the result of cloning this’s request.
auto cloned_request = TRY(m_request->clone(realm));
auto cloned_request = m_request->clone(realm);
// 3. Let clonedRequestObject be the result of creating a Request object, given clonedRequest, this’s headers’s guard, and this’s relevant Realm.
auto cloned_request_object = TRY(Request::create(HTML::relevant_realm(*this), cloned_request, m_headers->guard()));
auto cloned_request_object = Request::create(HTML::relevant_realm(*this), cloned_request, m_headers->guard());
// 4. Make clonedRequestObject’s signal follow this’s signal.
cloned_request_object->m_signal->follow(*m_signal);

2
Userland/Libraries/LibWeb/Fetch/Request.h
View file

@ -66,7 +66,7 @@ class Request final
WEB_PLATFORM_OBJECT(Request, Bindings::PlatformObject);
public:
[[nodiscard]] static WebIDL::ExceptionOr<JS::NonnullGCPtr<Request>> create(JS::Realm&, JS::NonnullGCPtr<Infrastructure::Request>, Headers::Guard);
[[nodiscard]] static JS::NonnullGCPtr<Request> create(JS::Realm&, JS::NonnullGCPtr<Infrastructure::Request>, Headers::Guard);
static WebIDL::ExceptionOr<JS::NonnullGCPtr<Request>> construct_impl(JS::Realm&, RequestInfo const& input, RequestInit const& init = {});
virtual ~Request() override;

18
Userland/Libraries/LibWeb/Fetch/Response.cpp
View file

@ -71,14 +71,14 @@ Optional<Infrastructure::Body&> Response::body_impl()
}
// https://fetch.spec.whatwg.org/#response-create
WebIDL::ExceptionOr<JS::NonnullGCPtr<Response>> Response::create(JS::Realm& realm, JS::NonnullGCPtr<Infrastructure::Response> response, Headers::Guard guard)
JS::NonnullGCPtr<Response> Response::create(JS::Realm& realm, JS::NonnullGCPtr<Infrastructure::Response> response, Headers::Guard guard)
{
// 1. Let responseObject be a new Response object with realm.
// 2. Set responseObject’s response to response.
auto response_object = MUST_OR_THROW_OOM(realm.heap().allocate<Response>(realm, realm, response));
auto response_object = realm.heap().allocate<Response>(realm, realm, response);
// 3. Set responseObject’s headers to a new Headers object with realm, whose headers list is response’s headers list and guard is guard.
response_object->m_headers = MUST_OR_THROW_OOM(realm.heap().allocate<Headers>(realm, realm, response->header_list()));
response_object->m_headers = realm.heap().allocate<Headers>(realm, realm, response->header_list());
response_object->m_headers->set_guard(guard);
// 4. Return responseObject.
@ -134,14 +134,14 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<Response>> Response::construct_impl(JS::Rea
auto& vm = realm.vm();
// Referred to as 'this' in the spec.
auto response_object = MUST_OR_THROW_OOM(realm.heap().allocate<Response>(realm, realm, Infrastructure::Response::create(vm)));
auto response_object = realm.heap().allocate<Response>(realm, realm, Infrastructure::Response::create(vm));
// 1. Set this’s response to a new response.
// NOTE: This is done at the beginning as the 'this' value Response object
// cannot exist with a null Infrastructure::Response.
// 2. Set this’s headers to a new Headers object with this’s relevant Realm, whose header list is this’s response’s header list and guard is "response".
response_object->m_headers = MUST_OR_THROW_OOM(realm.heap().allocate<Headers>(realm, realm, response_object->response()->header_list()));
response_object->m_headers = realm.heap().allocate<Headers>(realm, realm, response_object->response()->header_list());
response_object->m_headers->set_guard(Headers::Guard::Response);
// 3. Let bodyWithType be null.
@ -158,7 +158,7 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<Response>> Response::construct_impl(JS::Rea
}
// https://fetch.spec.whatwg.org/#dom-response-error
WebIDL::ExceptionOr<JS::NonnullGCPtr<Response>> Response::error(JS::VM& vm)
JS::NonnullGCPtr<Response> Response::error(JS::VM& vm)
{
// The static error() method steps are to return the result of creating a Response object, given a new network error, "immutable", and this’s relevant Realm.
// FIXME: How can we reliably get 'this', i.e. the object the function was called on, in IDL-defined functions?
@ -184,7 +184,7 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<Response>> Response::redirect(JS::VM& vm, S
// 4. Let responseObject be the result of creating a Response object, given a new response, "immutable", and this’s relevant Realm.
// FIXME: How can we reliably get 'this', i.e. the object the function was called on, in IDL-defined functions?
auto response_object = TRY(Response::create(realm, Infrastructure::Response::create(vm), Headers::Guard::Immutable));
auto response_object = Response::create(realm, Infrastructure::Response::create(vm), Headers::Guard::Immutable);
// 5. Set responseObject’s response’s status to status.
response_object->response()->set_status(status);
@ -213,7 +213,7 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<Response>> Response::json(JS::VM& vm, JS::V
// 3. Let responseObject be the result of creating a Response object, given a new response, "response", and this’s relevant Realm.
// FIXME: How can we reliably get 'this', i.e. the object the function was called on, in IDL-defined functions?
auto response_object = TRY(Response::create(realm, Infrastructure::Response::create(vm), Headers::Guard::Response));
auto response_object = Response::create(realm, Infrastructure::Response::create(vm), Headers::Guard::Response);
// 4. Perform initialize a response given responseObject, init, and (body, "application/json").
auto body_with_type = Infrastructure::BodyWithType {
@ -294,7 +294,7 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<Response>> Response::clone() const
auto cloned_response = TRY(m_response->clone(realm));
// 3. Return the result of creating a Response object, given clonedResponse, this’s headers’s guard, and this’s relevant Realm.
return TRY(Response::create(HTML::relevant_realm(*this), cloned_response, m_headers->guard()));
return Response::create(HTML::relevant_realm(*this), cloned_response, m_headers->guard());
}
}

4
Userland/Libraries/LibWeb/Fetch/Response.h
View file

@ -33,7 +33,7 @@ class Response final
WEB_PLATFORM_OBJECT(Response, Bindings::PlatformObject);
public:
static WebIDL::ExceptionOr<JS::NonnullGCPtr<Response>> create(JS::Realm&, JS::NonnullGCPtr<Infrastructure::Response>, Headers::Guard);
[[nodiscard]] static JS::NonnullGCPtr<Response> create(JS::Realm&, JS::NonnullGCPtr<Infrastructure::Response>, Headers::Guard);
static WebIDL::ExceptionOr<JS::NonnullGCPtr<Response>> construct_impl(JS::Realm&, Optional<BodyInit> const& body = {}, ResponseInit const& init = {});
virtual ~Response() override;
@ -48,7 +48,7 @@ public:
[[nodiscard]] JS::NonnullGCPtr<Infrastructure::Response> response() const { return m_response; }
// JS API functions
static WebIDL::ExceptionOr<JS::NonnullGCPtr<Response>> error(JS::VM&);
[[nodiscard]] static JS::NonnullGCPtr<Response> error(JS::VM&);
static WebIDL::ExceptionOr<JS::NonnullGCPtr<Response>> redirect(JS::VM&, String const& url, u16 status);
static WebIDL::ExceptionOr<JS::NonnullGCPtr<Response>> json(JS::VM&, JS::Value data, ResponseInit const& init = {});
[[nodiscard]] Bindings::ResponseType type() const;