fab6cec93a
This makes it more consistent and fixes some overlooked corner cases. Also it was decided on the last equality applicability DM (KT-62646) that we'd like `is`/`!is`/`as`/`as?` to work similarly to `===`/`!==`. Also note that it now gives a clearer explaination of why some corner cases work the way they do. For example, `FirPsiDiagnosticTestGenerated.testLambdaInLhsOfTypeOperatorCall` yields `UNCHECKED_CAST` instead of `CAST_NEVER_SUCCEEDS`, because `toTypeInfo()` replaces all type arguments with star projections, even when the argument is not a type parameter. This is because it has been desided to work this way in KT-57779. In `FirPsiOldFrontendDiagnosticsTestGenerated..NeverSucceeds#testNoGenericsRelated` the diagnostic is introduced, because `t2 as FC1` and `FC1` is a final class with no `T5` supertype. `UNCHECKED_CAST` in `FirPsiOldFrontendDiagnosticsTestGenerated.testSmartCast` disappeared, because previously we didn't take smartcasts into account. Note that `FirPsiOldFrontendDiagnosticsTestGenerated.testMappedSubtypes` is a false positive. It appears because `isSubtypeOf()` doesn't take into account platform types in supertypes of the given types (doesn't map them).
54 lines
970 B
Kotlin
Vendored
54 lines
970 B
Kotlin
Vendored
fun <E> foo(x: Any, y: Any) : Any {
|
|
class C
|
|
// without E?
|
|
if (x is <!CANNOT_CHECK_FOR_ERASED!>C<!>) {
|
|
return x
|
|
}
|
|
|
|
if (1 == 2) {
|
|
x <!UNCHECKED_CAST!>as C<!>
|
|
}
|
|
|
|
if (2 == 3) {
|
|
x <!UNCHECKED_CAST!>as? C<!>
|
|
}
|
|
|
|
class Outer<F> {
|
|
inner class Inner
|
|
}
|
|
|
|
// bare type
|
|
if (y is <!NO_TYPE_ARGUMENTS_ON_RHS!>Outer<!>) {
|
|
return y
|
|
}
|
|
|
|
if (y is <!CANNOT_CHECK_FOR_ERASED!>Outer<*><!>) {
|
|
return y
|
|
}
|
|
|
|
if (y is <!NO_TYPE_ARGUMENTS_ON_RHS!>Outer.Inner<!>) {
|
|
return y
|
|
}
|
|
|
|
if (y is <!CANNOT_CHECK_FOR_ERASED!>Outer<*>.Inner<!>) {
|
|
return y
|
|
}
|
|
|
|
y <!UNCHECKED_CAST!>as Outer<*><!>
|
|
y as <!NO_TYPE_ARGUMENTS_ON_RHS!>Outer<!>
|
|
|
|
y <!CAST_NEVER_SUCCEEDS!>as<!> Outer<*>.Inner
|
|
y as <!NO_TYPE_ARGUMENTS_ON_RHS!>Outer.Inner<!>
|
|
|
|
return C()
|
|
}
|
|
|
|
fun noTypeParameters(x: Any) : Any {
|
|
class C
|
|
if(x is C) {
|
|
return x
|
|
}
|
|
|
|
return C()
|
|
}
|