Report a warning when comparing incompatible enums
I've put `isIncompatibleEnums` to TypeIntersector because I placed all of its usages after all of the TypeIntersector::isIntersectionEmpty ones ^KT-28225 Fixed
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enum class E1 {
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A, B
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}
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enum class E2 {
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A, B
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}
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fun foo1(e1: E1, e2: E2) {
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<!INCOMPATIBLE_ENUM_COMPARISON!>e1 == e2<!>
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<!INCOMPATIBLE_ENUM_COMPARISON!>e1 != e2<!>
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<!INCOMPATIBLE_ENUM_COMPARISON!>e1 == E2.A<!>
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<!INCOMPATIBLE_ENUM_COMPARISON!>E1.B == e2<!>
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<!INCOMPATIBLE_ENUM_COMPARISON!>E1.A == E2.B<!>
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e1 == E1.A
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E1.A == e1
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e2 == E2.B
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E2.B == e2
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}
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fun foo2(e1: E1, e2: E2) {
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when (e1) {
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E1.A -> {}
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<!INCOMPATIBLE_ENUM_COMPARISON!>E2.A<!> -> {}
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<!INCOMPATIBLE_ENUM_COMPARISON!>E2.B<!> -> {}
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e1 -> {}
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<!INCOMPATIBLE_ENUM_COMPARISON!>e2<!> -> {}
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else -> {}
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}
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}
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fun foo3(e1: Enum<E1>, e2: Enum<E2>, e: Enum<*>) {
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e1 == e
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e1 == e2
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e1 == E1.A
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e1 == E2.A
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when (e1) {
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e1 -> {}
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e2 -> {}
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e -> {}
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E1.A -> {}
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E2.A -> {}
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else -> {}
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}
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when (e) {
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e -> {}
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e2 -> {}
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E1.A -> {}
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E2.A -> {}
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else -> {}
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}
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}
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