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Now that StateEvent name is vacated, the naming for event core classes
can be completely unified: Event, RoomEvent, CallEvent, StateEvent.
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This commit introduces a few things to further reduce the boilerplate
across event type definitions:
- Event type is no more separately stored in Event and therefore no more
passed to base event constructors. Until the previous commit, it was
used by is() to quickly match the event type; with the new event
metatype class, the same is achieved even quicker by comparing
metatype pointers.
- EventTemplate is a generalisation of StateEvent for all event types
providing common constructor signatures and content() for (most) leaf
event types. StateEvent therefore has become a partial specialisation
of EventTemplate for types derived from StateEventBase; as the known
client code base does not use it directly, a compatibility alias is
not provided. Also, DEFINE_SIMPLE_EVENT now expands into a class
deriving from EventTemplate.
- On top of StateEvent->EventTemplate specialisation,
KeyedStateEventBase and KeylessStateEventBase types are introduced
with appropriate constructor signatures (with or without state_key,
respectively) to allow `using` of them from derived event types.
To facilitate writing of constraints, concepts for keyed and keyless
state event types are also introduced; RoomStateView, e.g., makes use
of those to provide appropriate method signatures.
- typeId(), unknownEventTypeId(), UnknownEventTypeId are no more
provided - they weren't used throughout the known code base
(Quaternion, NeoChat), and the concept of "unknown event types" is
hereby eliminated entirely.
- RoomKeyEvent no more accepts senderId as a parameter; it has never
been a good practice as the sender is assigned by Connection anyway.
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The new metatype framework replaces
EventFactory/DEFINE_EVENT_TYPEID/REGISTER_EVENT_TYPE; it is faster,
more functional and extensible. Of note:
- EventMetaType mostly reproduces the logic of EventFactory but supports
custom base event types not just for loading (that part EventFactory
also supported) but also for matching - previously you had to have
Event::is*Event() for base type matching. Now Quotient::is() can
match against both base and leaf types.
- Instead of DEFINE_EVENT_TYPEID and REGISTER_EVENT_TYPE there's now
a single macro, QUO_EVENT, intended for use in the way similar to
Q_OBJECT. Actually, the entire framework borrows heavily from
QMetaObject and Q_OBJECT. Making event types full-fledged QObjects
is still not considered because half of QObject functions would not
be applicable (e.g. signals/slots) while another half (in particular,
using Matrix type ids to select event types) would still have to be
done on top of QObject. And QML can just access events as
const QJsonObjects which is arguably more lightweight as well.
- QUO_BASE_EVENT is a new macro replacing EventFactory object
definitions. This was necessary for the same reason why Q_OBJECT is
a macro: aside from a static object definition, this macro
introduces a virtual function override to resolve the metatype at
runtime. This very mechanism is used to make event type
matching/casting as quick as possible
- QUO_BASE_EVENT and QUO_EVENT use the C++20 __VA_OPT__ feature that
is only available with the new MSVC preprocessor (see
https://docs.microsoft.com/en-us/cpp/preprocessor/preprocessor-experimental-overview);
the respective switch was added to CMakeLists.txt.
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Default construction was only done to support stubbed state in Room
and even that did not really use those, opting to construct an event
from an empty QJsonObject instead. Now that Room doesn't have
stubbed state, default constructors are even less needed.
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This include all (hopefully) classes/structures and functions that have
non-inline definitions, as well as namespaces with Q_NAMESPACE since
those have non-inline (as of Qt 5.15) QMetaObject - for that a new
macro, QUO_NAMESPACE, has been devised to accommodate the lack of
Q_NAMESPACE_EXPORT in Qt before 5.14.
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After going through all the files and the history of commits on them
it was clear that some copyright statements are obsolete (the code has
been overwritten since) and some are missing. This commit tries best to
remedy that, along with adding SPDX tags where they were still not used.
Also, a minimal SPDX convention is documented for further contributions.
Closes #426.
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# Conflicts:
# CMakeLists.txt
# lib/avatar.cpp
# lib/connection.cpp
# lib/connection.h
# lib/connectiondata.cpp
# lib/csapi/account-data.cpp
# lib/csapi/account-data.h
# lib/csapi/capabilities.cpp
# lib/csapi/capabilities.h
# lib/csapi/content-repo.cpp
# lib/csapi/create_room.cpp
# lib/csapi/filter.cpp
# lib/csapi/joining.cpp
# lib/csapi/keys.cpp
# lib/csapi/list_joined_rooms.cpp
# lib/csapi/notifications.cpp
# lib/csapi/openid.cpp
# lib/csapi/presence.cpp
# lib/csapi/pushrules.cpp
# lib/csapi/registration.cpp
# lib/csapi/room_upgrades.cpp
# lib/csapi/room_upgrades.h
# lib/csapi/search.cpp
# lib/csapi/users.cpp
# lib/csapi/versions.cpp
# lib/csapi/whoami.cpp
# lib/csapi/{{base}}.cpp.mustache
# lib/events/accountdataevents.h
# lib/events/eventcontent.h
# lib/events/roommemberevent.cpp
# lib/events/stateevent.cpp
# lib/jobs/basejob.cpp
# lib/jobs/basejob.h
# lib/networkaccessmanager.cpp
# lib/networksettings.cpp
# lib/room.cpp
# lib/room.h
# lib/settings.cpp
# lib/settings.h
# lib/syncdata.cpp
# lib/user.cpp
# lib/user.h
# lib/util.cpp
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Closes #234.
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