`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
If an unused setter parameter was replaced with an underscore ('_'),
it had a special name in the stub ('<anonymous parameter 0>'). The text
version of the stub inserted it as is, leading to an extra
'PsiErrorElement'.
^KTIJ-28194 Fixed
There are two ways of test service registration:
- manual call to `useAdditionalServices` in abstract test runner
- using of `additionalServices` property in one of test entity (e.g. in handler)
Services are registered in the same order (manual first, automatic second)
This led to the situation that if there was registered more specific
implementation of the service in the test configuration, it will be
overridden with regular implementation from handler, which is fixed
by this commit
This fixes some type argument mismatch errors caused by a captured type
being approximated and then captured again.
Some places need to be adapted to work with captured types that
previously only worked with approximated types.
#KT-62959 Fixed
It's expected to partially mimic the behavior of what
previously was called builder inference, but with more clear contracts
(documentation is in progress, though)
See a lot of fixed issues in the later commits with test data,
especially [red-to-green]
^KT-59791 In Progress
StandardClassIds was using Annotations subclass in its initialization.
At the same time, Annotations subclass was using StandardClassIds in its
initialization implicitly through baseId() method.
This leads to a rare deadlock on CI in case where two different threads
tried to initialize both classes at the same time.
It can't be reproduced robustly, as a single thread was able to
successfully initialize both, and will do it on an attempt to
initialize any of them.
^KT-64720 Fixed
We don't have true flexible types in the IR, but we approximate it with
internal type annotations, such as FlexibleNullability,
FlexibleMutability, RawType. These annotations are then handled
specially in JvmIrTypeSystemContext, which can construct a fake flexible
type so that type checker on IR types would behave exactly as on
frontend types.
As shown in KT-63441, one instance of flexible types where flexibility
was lost during conversion to IR is Java array/vararg types. It's
necessary to support it so that IR fake overrides could be constructed
correctly, because IR fake override checker requires parameter types to
be equal. So this change introduces another internal type annotation,
FlexibleArrayElementVariance, which is only applicable to types with
classifier kotlin/Array, and which signifies that the annotated type
`Array<X>` should rather be seen as `Array<X>..Array<out X>`.
#KT-63441 Fixed
#KT-63446 Fixed
The problem from KT-63624 was that during matching phase we must choose
only one candidate, but in Java we can have two successfully matched
properties: 1) from field and 2) from method, which overrides Kotlin
property.
See test `propertyAgainstJavaPrivateFieldAndPublicMethod.kt`.
As a result, we choose field candidate, throw away method candidate, and
then fail during visibility check.
Instead of inventing special rule of prioritizing field over method
it was decided to prohibit actualization to Java field at all because:
1. It doesn't seem that Java fields actualization was implemented in K1
on purpose
2. People usually don't use public Java fields, and use instead
private field + getter, especially when compatibility is important, so
it shouldn't be a breaking change
Besides that, such solution simplifies code and is consistent with
the current logic of matcher, which doesn't expect that two members
can be matched successfully. Also, it fixes KT-63624 and KT-63667.
^KT-63624 Fixed
^KT-63667 Fixed
Previously, because we didn't handle flexible types properly in
prepareCapturedType, projections inside flexible types would only be
captured during subtyping with captureStatus=FOR_SUBTYPING
which would lead to the constraint type being wrongly approximated
(see ConstraintInjector.TypeCheckerStateForConstraintInjector
.addNewIncorporatedConstraint).
Fixing the capturing produced two kinds of false positive diagnostics:
1. In ConstraintInjector.TypeCheckerStateForConstraintInjector
.addNewIncorporatedConstraint we would get two instances of cone types
that are structurally equal and containing the same captured type.
However, because we only skipped subtyping if the types were
referentially equal, we would get a contradiction here.
The fix was to use structural equality instead, which should be okay
as the captured type instances are the same.
2. Reified type variables were inferred to captured types because
flexible arrays with captured upper bounds
(Array<Foo>..Array<Captured(out Foo)>?) were not properly approximated.
#KT-62609 Fixed
FirDefaultArgumentsInExpectActualizedByFakeOverrideChecker is an adhoc
checker which can be converted to ExpectActualCheckingCompatibility to
reuse common expect-actual checking infrastructure.
^KT-62913 Fixed
Review: https://jetbrains.team/p/kt/reviews/13094/timeline
Tests that were broken by one of my previous commits are now fixed:
- actualFakeOverride_paramsAreCompatibleViaSharedMethodWithDefaultParams.kt
- inheritedJavaMembers.kt
DEFAULT_ARGUMENTS_IN_EXPECT_ACTUALIZED_BY_FAKE_OVERRIDE diagnostic
disappeared in delegation.fir.kt because only one
AbstractExpectActualChecker incompatibility can be reported at a time
(DEFAULT_ARGUMENTS_IN_EXPECT_ACTUALIZED_BY_FAKE_OVERRIDE is now reported
not by adhoc checker but by common AbstractExpectActualChecker). It
would be nice to report both of them, but it's a separate issue KT-62631
delegation2 test makes sure that
DEFAULT_ARGUMENTS_IN_EXPECT_ACTUALIZED_BY_FAKE_OVERRIDE is reported when
NO_ACTUAL_CLASS_MEMBER_FOR_EXPECTED_CLASS is fixed
- It became unused after cc70f78027
- And it's not going to become used in the nearest future, since in K2,
we won't have "member scopes" check on frontend (for now)
- Migrate ExpectActualCompatibility -> ExpectActualCheckingCompatibility
where the "checker" is expect
- Migrate ExpectActualCompatibility -> ExpectActualMatchingCompatibility
where the "matching" is expect
KT-62590 in progress. A lot of tests start to fail now. I will fix them
in next commits
Review: https://jetbrains.team/p/kt/reviews/12750/timeline
1. Support variance in ErrorListDiagnosticListRenderer.
I will make some diagnostics to have covariant type arguments in the
next commits
2. Drop unused code
Review: https://jetbrains.team/p/kt/reviews/12750/timeline
It should have been WeakIncompatible from the beginning because it's not
possible to overload by return type in Kotlin
This commit is a step forward to fix KT-62591
Unfortunately, the test cannot demonstrate the problem because of
another bug in K2 KT-59887
^KT-62752 Fixed
Review: https://jetbrains.team/p/kt/reviews/12750/timeline
Motivation:
It makes expect-actual matching-checking model more consistent.
expect-actual "matching" is run before FirResolvePhase.BODY_RESOLVE. You
can't know return types, until you run BODY_RESOLVE. That's why the
return type can't be checked during expect-actual matching. But it's
cursed: you have something that have to match by, but, at the same time,
you can't do it.
expect-actual "checking" is run after FirResolvePhase.BODY_RESOLVE.
That's why if we convert ReturnType incompatibility to WeakIncompatible
(which should have been called CheckingIncompatible), then expect-actual
matching model becomes consistent.
We will also be able to get rid of unnecessary
FirActualCallableDeclarationChecker. Because it won't be necessary.
Return types will be checked by common logic of expect-actual "checker"
Motivation: I'm going to drop NonPrivateCallableAdded (KT-62655) in the
next commits. But I don't want to change the existing logic when I drop
it. That's why I have to introduce the "Unknown" case
This includes checking of annotatins set on:
- value parameter types
- type parameter bound types
- extension functions receiver types
- function return types
- class super types
Fix in `defaultParams_inheritanceByDelegation_positive.kt`
is needed because of problem in resolution of implicit return types
(KT-62064), which leads to crash in annotation checker, because it
expects resolved return type.
MR: KT-MR-12245
^KT-60671 Fixed
The main reason of this commit is the fact that it makes no sense
to create type checker forks in case of two or more types which equal
each other.
Also, this commit fixes the test taken from KT-59514
(see interconnectedGenerics.kt test changed in this commit).
In this particular case we have a subType of C.WithL<Pr!, En<Pr>!>,
and a superType of R<T> with a superType constructor R.
In findCorrespondingSupertypes we get *two* similar supertypes here,
both have a string representation of:
R<Il<@EnhancedNullability En<Pr>!>!>.
If we create two forks because of it, we get NEW_INFERENCE_ERROR
with the following subtyping violation:
Il<@EnhancedNullability En<Pr>!>! <: En<Pr>!.
NEW_INFERENCE_ERROR happens because we make a redundant fork in that case,
but the forks should still work despite it (see KT-62333).
These two types appear due to the content of FirCorrespondingSupertypeCache.
For a key C.WithL and a superType R it stores the following pair of supertypes:
- R<Il<@EnhancedNullability S>!>
- R<Il<(@EnhancedNullability S & Any, @EnhancedNullability S?)>!>
After substitution of S to En<Pr>! they become similar.
NB: if we change jspecify severity level from strict to warn,
then 'R<Il<(S & Any, S?)>!>' is the only remaining supertype,
and @EnhancedNullability annotation is no more in use.
The type hierarchy in this example looks like:
WithL<T, S> <: CanWithB<T, S>, R.F<S, Il<S>>
CanWithB<T, S> <: R.F<S, Il<S>>
R.F<S, Il<S>> <: R<Il<S>>
So R is reachable by two different ways, via CanWithB and directly via R.F.
#KT-59514 Fixed
This is needed because in order to figure out which declarations are
visible from anonymous objects in terms of overridability (see
`FirVisibilityChecker.isVisibleForOverriding`), we need to get the
package name of that anonymous object, because there's package-private
visibility on JVM.
#KT-62017 Fixed
There is IDE quick fix which suggests to copy mismatched annotation
from `expect` to `actual` (see KTIJ-26633). It needs to find
`actual` PsiElement where to add annotation. Before previous commit, it
was easy - just get source of `Incompatibility.actualSymbol`.
After previous commit, the problem might be in value parameter, while
`actualSymbol` would contain function symbol. This is solved by adding
new field `Incompatibility.actualAnnotationTargetElement`.
`SourceElementMarker` introduced, because it's needed to be used in
abstract checker. Existing `DeclarationSymbolMarker` doesn't fit
because in next PR for this issue annotations set on types will be reported,
and types are not declarations.
^KT-60671
In this commit we begin counting a catch parameter as
both a local variable and a value parameter for the purpose
of annotation targeting.
#KT-61691 Fixed
There is a corresponding example inside the stdlib,
see `kotlin.text.startsWith`.
JVM and common counterpart are weakly-compatible
as the actual declaration has default arguments,
which results in `ExpectActualCompatibility.Incompatible.ActualFunctionWithDefaultParameters`
This commit allows such cases.
^KT-61732 fixed
@ImplicitlyActualizedByJvmDeclaration is the only one
OptionalExpectation annotation which works correctly when set only on
`expect`. All other (like @JvmName, @JsName) - not, so warning for them
must be reported.
^KT-61725 Fixed
Nikolay Lunyak