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[FIR] Forbid erroneous ===-checks

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It was decided to forbid such comparisons,
as we know how `===` works. Also, added some more
test cases, just for comparison.

Reusing the proper `canHaveSubtypes()`
from `TypeUtils` prevents a breaking change
in:

- `comparingTripleWithPair.kt`
- `comparisonOfGenericInterfaceWithGenericClass.kt`

But it does lead to warnings
(instead of errors) in
`incompatibleEnumEntryClasses.kt`, which is an
unrelated mistake that will be fixed in the next
commit.

The refactoring in `canHaveSubtypes()` is purely
cosmetic - otherwise reading these conditions is hard
(and they don't fit my screen vertically).

^KT-62646
^KT-65541
^KT-57779
This commit is contained in:
Nikolay Lunyak
2024-02-26 10:46:32 +02:00
committed by Space Team
parent 6bf987e772
commit 226d4df277
23 changed files with 219 additions and 82 deletions
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compiler/testData/diagnostics/tests/enum/equalityOfEnumAndParameter.kt
Vendored
+15
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@@ -26,6 +26,11 @@ fun <P> processInfo1(info: String, printer: P) where P: Buffered, P: AIPowered {
printer == BufferedEnum.A
<!INCOMPATIBLE_ENUM_COMPARISON_ERROR!>printer == UsualEnum.C<!>
printer == CleverEnum.E
<!EQUALITY_NOT_APPLICABLE!>printer === 20<!>
printer === BufferedEnum.A
<!INCOMPATIBLE_ENUM_COMPARISON_ERROR!>printer === UsualEnum.C<!>
printer === CleverEnum.E
}
fun <P> processInfo2(info: String, printer: P) where P: AIPowered, P: Buffered {
@@ -33,6 +38,11 @@ fun <P> processInfo2(info: String, printer: P) where P: AIPowered, P: Buffered {
<!INCOMPATIBLE_ENUM_COMPARISON_ERROR!>printer == BufferedEnum.A<!>
<!INCOMPATIBLE_ENUM_COMPARISON_ERROR!>printer == UsualEnum.C<!>
printer == CleverEnum.E
<!EQUALITY_NOT_APPLICABLE!>printer === 20<!>
<!INCOMPATIBLE_ENUM_COMPARISON_ERROR!>printer === BufferedEnum.A<!>
<!INCOMPATIBLE_ENUM_COMPARISON_ERROR!>printer === UsualEnum.C<!>
printer === CleverEnum.E
}
abstract class Printer {
@@ -44,6 +54,11 @@ fun <P> processInfo3(info: String, printer: P) where P: Buffered, P: Printer {
<!INCOMPATIBLE_ENUM_COMPARISON_ERROR!>printer == BufferedEnum.A<!>
<!INCOMPATIBLE_ENUM_COMPARISON_ERROR!>printer == UsualEnum.C<!>
<!INCOMPATIBLE_ENUM_COMPARISON_ERROR!>printer == CleverEnum.E<!>
<!EQUALITY_NOT_APPLICABLE!>printer === 20<!>
<!INCOMPATIBLE_ENUM_COMPARISON_ERROR!>printer === BufferedEnum.A<!>
<!INCOMPATIBLE_ENUM_COMPARISON_ERROR!>printer === UsualEnum.C<!>
<!INCOMPATIBLE_ENUM_COMPARISON_ERROR!>printer === CleverEnum.E<!>
}
fun test(a: Int, b: Any?) {