Check all members for `Visibility.Unknown`,
otherwise we miss them when they come
from supertypes. This is the reason why
the FP intellij build failed with a
cryptic stacktrace instead of a
human-readable diagnostic.
Also, do report the diagnostic at all
cases of `Visibilities.Unknown`. Turns
out, there are no "simple to reason
about" situations here :(
Also, an interesting detail:
`retrieveDirectOverriddenOf` returns an
empty list for intersection overrides.
But this doesn't seem to break anything...
Replacing `CANNOT_INFER_VISIBILITY`'s
type `KtDeclaration` with
`PsiNameIdentifierOwner` and the related
changes in `PositioningStrategies`
were needed to prevent an exception saying that
`PsiClassImpl` is not a subtype of
`KtDeclaration`.
This code does lead to inferring
`Visibilities.Unknown`, but it's not
reported anywhere. This is because it
happens inside `AbstractIntSet` which
comes to us "pre-compiled" by javac,
whereas `FirOverrideChecker` only checks
members within `KotlinClass`.
^KT-65972
The rule of thumb is the following:
If the `if` and `when` can be successfully replaced with `while`,
then it is used as a statement, otherwise, it is used as an expression.
#KT-59883
In some cases we transform flexible type into non-flexible during
enhancement, but don't add `@EnhancedNullability` attribute to them,
which breaks consistency with K1 on IR level
This commit fixes it
^KT-65302
A class can inherit two declarations that are compatible from the
overridability standpoint and are therefore combined to a non-trivial
intersection.
At the same time, the class can declare a member declaration that
only overrides one of the intersection's members.
In this case, we break up the intersection and only add the overridden
parts to the declared member's direct overridden list.
If the class doesn't override the intersection, it exists as
intersection override, like before.
#KT-65487 Fixed
When a declaration with an ObjC annotation is stored in a different
module, the annotation arguments are not resolved by default. This leads
to a bug in the checker. Before attempting to find the objCName, it is
necessary to resolve the annotation first.
#KT-64276
`testIntersectionOfPrimitiveBasedFunctions`
is fine, because we deprecate this
already in ^KT-63243.
`CANNOT_INFER_VISIBILITY` is
positioned as `DECLARATION_NAME`,
just in case we decide for
some reason that we do want to
report it along with
`MANY_*_NOT_IMPLEMENTED`. In that
case, we'd get a problem that
their bounds overlap, but not
completely contain one another.
^KT-63741 Fixed
^KT-59400 Fixed
Even though SO may not be correct
overrides sometimes, it feels more
natural to treat fake overrides as...
well, "overrides". And without it
we'd need to make the code in
`FirOverrideChecker` less intuitive.
The change in
`FirOptInUsageBaseChecker` is needed
to prevent `OPT_IN_OVERRIDE` on
intersection overrides where one
of the base functions requires opt-in.
We never designed this in such
a way that it's an error.
See:
`FirPsiOldFrontendDiagnosticsTestGenerated.testIncorrectTargetsForExperimentalAnnotation`.
According to KT-63741, the case like
`kt40510.fir.kt` should, in fact,
be an error. It will be addressed
separately.
In general, overrides should not
contain default values, and it's
better to make fake overrides be close
to proper overrides as much as
possible. It will be important when
we begin running `FirOverrideChecker`
for fake overrides.
^KT-63879 Fixed
^KT-65534
Partially reverts 24367e0ad8
Constructors have their own list of hidden/visible.
We now require the constructor to be in VISIBLE_CONSTRUCTOR_SIGNATURES,
everything else is hidden.
This makes it unnecessary to check HIDDEN_CONSTRUCTOR_SIGNATURES
#KT-65821 Fixed
... w.r.t the variance of their type arguments.
Because `Object[]` is represented as `Array<Any>..Array<out Any>?`,
when we substitute, we can't just take the upper bound because it
changes the variance of the type agument.
Instead, we construct a flexible type and use both bounds, like with
collections with flexible mutability.
#KT-65246 Fixed
When a lambda captures a local variable without a contract, future
assignments can impact the smartcast stability for that variable within
the lambda. Because future assignments can appear in both resolved and
unresolved code, track each assignment as encountered. To determine if
a smartcast can be considered stable, check that all future assignments
are resolved and do not revert variable to a super type.
^KT-58191 Fixed
This affects methods like List.getFirst/getLast where it was decided
to keep them hidden but to make them visible on overrides like
ArrayList or LinkedList.
The goal is to prevent a breaking change since some implementations
like LinkedList had this method before JDK 21.
#KT-65438
This annotation leads to conflicting overloads error supression,
in case where several function with the same argument types,
but different argument names are inherited from ObjC class.
We need to implement it in both K1 and K2 to make the IDE experience
better.
But the annotation itself wouldn't be available in K1.
^KT-61323
Currently, REDECLARATION is not reported if two conflicting declarations
are in different source sets (KT-59898). However, when it's fixed,
we want this test to keep testing the signature clash diagnostic,
and not fail because of unexpected REDECLARATION error.
For some reason type parameters end up in
`GlobdalDeclarationTable`, and thus we tracked them in
`IdSignatureClashDetector`, which wasn't right and confused the
diagnostic renderer that uses
`org.jetbrains.kotlin.resolve.MemberComparator` for sorting the
declarations to display in diagnostics. That comparator doesn't know
jow to work with type parameters.
Besides, type parameters, like many other types of declarations, are not
considered public wrt KLIB ABI, so there's no need to show
CONFLICTING_KLIB_SIGNATURES_ERROR for them.
^KT-65723 Fixed
Nikolay Lunyak