Before this commit, class super-type could be sealed only in the case
it's the class we are inside or in the same file with.
However, it's quite possible for the expect sealed class
to be implemented by typealias.
So in this commit we allow class super-type to be sealed
if it's typealias expansion we are inside.
Before this commit, expect super-class without constructors did not
provoke SUPERTYPE_NOT_INITIALIZED. However, it should, but only
if sub-type is normal class (not an expect one).
So #KT-24597 Fixed
In an open expected class inheriting an expected interface, abstract
members are now inherited as _open_ fake overrides, not final. Final was
technically safer but also stricter and thus could be unexpected by the
user. In a final class, abstract members are still inherited as _final_
fake overrides. So, the general rule is now the following: the modality
of an expected fake override, which overrides only abstract members, in
a non-abstract class is equal to the modality of that class
#KT-22031 Fixed
Fake overrides for abstract members from expected classes should become
non-abstract (final, in fact) in non-abstract expected subclasses
#KT-22031 Fixed
When a parameter has a default argument value both in the expected
annotation and in the actual annotation, they must be equal. This check
has been only implemented for the case when actual annotation is Kotlin
source code, and NOT a Java class coming from an actual typealias. The
latter case would require a bit more work in passing a platform-specific
annotation-value-reading component to ExpectedActualDeclarationChecker,
and is therefore postponed.
For now, Java annotations that are visible through actual type aliases
cannot have default argument values for parameters which already have
default values in the expected annotation declaration
#KT-22703 Fixed
#KT-22704 Open
Also make TypeParameterUpperBounds a "strong" incompatibility, meaning
that non-actual members from platform module are _not_ going to be
matched to the expected members if this incompatibility exists between
them, and therefore NO_ACTUAL_FOR_EXPECT will be reported on the
expected declaration, instead of ACTUAL_MISSING on the platform member.
This is needed because the difference in type parameter upper bounds can
have effect on the function signature on the platform (e.g. on JVM,
Array<T> -> T[], but Array<T> -> Comparable[] if T : Comparable<T>), and
it would be incorrect to report ACTUAL_MISSING on the member that has
nothing to do with the expected declaration that happens to coincide
with it in everything except type parameter bounds
#KT-21864 Fixed
Expect members should always lose in resolution to non-expect members,
be it simple calls or callable references. Note that there should be
exactly one actual member for each expect member in correct code, so
both ways to check for expect vs non-expect are correct: either before
signature comparison, or after.
#KT-20903 Fixed
Divide incompatibility on two groups: strong and weak. Strong incompatibility means that if declaration with such incompatibility has no `actual` modifier then it's considered as usual overload and we'll not report any error on it.
#KT-20540 Fixed
#KT-20680 Fixed
Header/impl declarations are now considered fully compatible even in the
case when the impl declaration has no "impl" modifier. The error about
no "impl" is now reported separately and only on the impl declaration,
never on the header declaration
#KT-20087 Fixed
Note that the quick fix to implement header class works incorrectly when
that class has nested classes at the moment; this should be fixed
separately
#KT-15494 Fixed
#KT-18573 Fixed
Also support a quick fix to add 'impl' modifier (KT-18454), although it
doesn't work yet on classes because there's no error on them in the IDE
#KT-18087 Fixed
#KT-18452 Fixed
#KT-18454
Try to report most of the errors on the actual members of the impl
class. In many cases, there's a 1:1 mapping of header to impl class
members, so the error "some members are not implemented" on the class
declaration itself is redundant. Exceptions include functions/properties
from supertypes (there may be no other place to report a signature
mismatch error in this case), functions/properties not marked with
'impl' (the checker is only run for declarations explicitly marked with
'impl') and default constructors (the checker is not run for them)
#KT-18447 Fixed
Mikhail Glukhikh