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LibCore: Slightly rework the Core::Promise API

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The previous iteration of this API was somewhat odd and rough in random
places, which degraded usability and made less than perfect sense.
This commit reworks the API to be a little closer to more
conventional promise APIs (a la javascript promises).

Also adds a test to ensure the class even works.
This commit is contained in:
Ali Mohammad Pur 2023-07-08 01:30:27 +03:30 • committed by Linus Groh
parent 5a0ad6812c
commit 0c5c75e8a4
9 changed files with 150 additions and 38 deletions
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8
Userland/Libraries/LibIMAP/Client.cpp
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@ -64,7 +64,7 @@ ErrorOr<void> Client::on_ready_to_receive()
// Once we get server hello we can start sending.
if (m_connect_pending) {
TRY(m_connect_pending->resolve({}));
m_connect_pending->resolve({});
m_connect_pending.clear();
m_buffer.clear();
return {};
@ -227,13 +227,13 @@ ErrorOr<void> Client::handle_parsed_response(ParseStatus&& parse_status)
bool should_send_next = false;
if (!parse_status.successful) {
m_expecting_response = false;
TRY(m_pending_promises.first()->resolve({}));
m_pending_promises.first()->resolve({});
m_pending_promises.remove(0);
}
if (parse_status.response.has_value()) {
m_expecting_response = false;
should_send_next = parse_status.response->has<SolidResponse>();
TRY(m_pending_promises.first()->resolve(move(parse_status.response)));
m_pending_promises.first()->resolve(move(parse_status.response));
m_pending_promises.remove(0);
}
@ -386,7 +386,7 @@ RefPtr<Promise<Optional<SolidResponse>>> Client::append(StringView mailbox, Mess
auto response_promise = Promise<Optional<Response>>::construct();
m_pending_promises.append(response_promise);
continue_req->on_resolved = [this, message2 { move(message) }](auto& data) -> ErrorOr<void> {
continue_req->on_resolution = [this, message2 { move(message) }](auto& data) -> ErrorOr<void> {
if (!data.has_value()) {
TRY(handle_parsed_response({ .successful = false, .response = {} }));
} else {