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LibIMAP: Reject a promise if a response couldn't be parsed

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Promises can take an Error type now for quite some time, so let's use it
instead of returning an empty Optional type in the result field. :^)

Ideally we should give a more detailed info of what failed to parse, but
this will do for now.
This commit is contained in:
Karol Kosek 2023-08-29 16:57:22 +02:00 • committed by Andrew Kaster
parent 55d730bd5c
commit 1f605407bd
1 changed files with 9 additions and 10 deletions
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19
Userland/Libraries/LibIMAP/Client.cpp
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@ -193,7 +193,7 @@ NonnullRefPtr<Promise<Optional<T>>> cast_promise(NonnullRefPtr<Promise<Optional<
{
auto new_promise = promise_variant->map<Optional<T>>(
[](Optional<Response>& variant) {
return variant.has_value() ? move(variant->get<T>()) : Optional<T>();
return move(variant->get<T>());
});
return new_promise;
}
@ -250,8 +250,7 @@ ErrorOr<void> Client::handle_parsed_response(ParseStatus&& parse_status)
bool should_send_next = false;
if (!parse_status.successful) {
m_expecting_response = false;
m_pending_promises.first()->resolve({});
m_pending_promises.remove(0);
m_pending_promises.take_first()->reject(Error::from_string_literal("Failed to parse message"));
}
if (parse_status.response.has_value()) {
m_expecting_response = false;
@ -409,15 +408,15 @@ NonnullRefPtr<Promise<Optional<SolidResponse>>> Client::append(StringView mailbo
auto response_promise = Promise<Optional<Response>>::construct();
m_pending_promises.append(response_promise);
continue_req->on_resolution = [this, message2 { move(message) }](auto& data) -> ErrorOr<void> {
if (!data.has_value()) {
TRY(handle_parsed_response({ .successful = false, .response = {} }));
} else {
TRY(send_raw(message2.data));
m_expecting_response = true;
}
continue_req->on_resolution = [this, message2 { move(message) }](auto&) -> ErrorOr<void> {
TRY(send_raw(message2.data));
m_expecting_response = true;
return {};
};
continue_req->on_rejection = [this](Error&) {
// NOTE: This never fails.
MUST(handle_parsed_response({ .successful = false, .response = {} }));
};
return cast_promise<SolidResponse>(response_promise);
}