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LibWeb: Add and use a helper to reject a promise with an exception

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Sam Atkins 2024-03-08 15:37:28 +00:00 • committed by Tim Flynn
parent 24951a039e
commit 4bdb7dba8c
10 changed files with 42 additions and 52 deletions
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20
Userland/Libraries/LibWeb/Streams/ReadableStreamBYOBReader.cpp
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@ -110,30 +110,26 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<JS::Promise>> ReadableStreamBYOBReader::rea
// 1. If view.[[ByteLength]] is 0, return a promise rejected with a TypeError exception.
if (view->byte_length() == 0) {
auto exception = JS::TypeError::create(realm, "Cannot read in an empty buffer"sv);
auto promise_capability = WebIDL::create_rejected_promise(realm, exception);
return JS::NonnullGCPtr { verify_cast<JS::Promise>(*promise_capability->promise()) };
WebIDL::SimpleException exception { WebIDL::SimpleExceptionType::TypeError, "Cannot read in an empty buffer"sv };
return WebIDL::create_rejected_promise_from_exception(realm, move(exception));
}
// 2. If view.[[ViewedArrayBuffer]].[[ArrayBufferByteLength]] is 0, return a promise rejected with a TypeError exception.
if (view->viewed_array_buffer()->byte_length() == 0) {
auto exception = JS::TypeError::create(realm, "Cannot read in an empty buffer"sv);
auto promise_capability = WebIDL::create_rejected_promise(realm, exception);
return JS::NonnullGCPtr { verify_cast<JS::Promise>(*promise_capability->promise()) };
WebIDL::SimpleException exception { WebIDL::SimpleExceptionType::TypeError, "Cannot read in an empty buffer"sv };
return WebIDL::create_rejected_promise_from_exception(realm, move(exception));
}
// 3. If ! IsDetachedBuffer(view.[[ViewedArrayBuffer]]) is true, return a promise rejected with a TypeError exception.
if (view->viewed_array_buffer()->is_detached()) {
auto exception = JS::TypeError::create(realm, "Cannot read in a detached buffer"sv);
auto promise_capability = WebIDL::create_rejected_promise(realm, exception);
return JS::NonnullGCPtr { verify_cast<JS::Promise>(*promise_capability->promise()) };
WebIDL::SimpleException exception { WebIDL::SimpleExceptionType::TypeError, "Cannot read in a detached buffer"sv };
return WebIDL::create_rejected_promise_from_exception(realm, move(exception));
}
// 4. If this.[[stream]] is undefined, return a promise rejected with a TypeError exception.
if (!m_stream) {
auto exception = JS::TypeError::create(realm, "Cannot read from an empty stream"sv);
auto promise_capability = WebIDL::create_rejected_promise(realm, exception);
return JS::NonnullGCPtr { verify_cast<JS::Promise>(*promise_capability->promise()) };
WebIDL::SimpleException exception { WebIDL::SimpleExceptionType::TypeError, "Cannot read from an empty stream"sv };
return WebIDL::create_rejected_promise_from_exception(realm, move(exception));
}
// 5. Let promise be a new promise.