Make parcelize work consistently with
`FirOverrideChecker`.
Actually, there is a philosophical question about
what to do when a plugin generates a class
in a new package, and this class is red code
(for instance, doesn't implement an abstract
member from a supertype). There's no source
to report such an error, but we probably do
want to run checkers to avoid trying to
compile red code to binaries (because it may
crash in backend, or it may silently work).
K2 checks that the entire Parceler of the WriteWith annotation is a
subtype of the expected Parceler for the property, while K1 only checks
that the type argument of the WriteWith Parceler is a subtype of the
property type. This mismatch leads to inconsistencies between K1 and K2
diagnostic reporting. Switch K2 to K1 behavior so diagnostics are
consistent.
^KT-60019 Fixed
Class properties are being expanded before checking for custom
parcelers, which makes custom parcelers of type alias unable to be
found. To maintain K1 behavior, the custom parceler type must also be
expanded, so even the aliased type is supported when used in its raw
form as a class property.
^KT-64707 Fixed
A previous fix to the generator made the generator and checker
validation of classes which could be parcelized different. The checker
would report error in cases where the generator would not generate
anything. Align these checks, with improved code sharing, so errors are
not reported on classes which will not have parcelize components
generated.
^KT-63086 Fixed
There is one of checks left unimplemented (FirParcelizePropertyChecker.checkParcelableClassProperty)
because it requires huge commonization of detecting which type can be
serialized and which not, which is not prioritized job for now
Nikolay Lunyak