Nikolay Lunyak
c9d7b47900
Since we forbid overriding `equals` for value classes, and value classes may only implement interfaces, we know everything about their `equals`, hence we can guarantee if it always returns `false` for different value classes.
99 lines
2.3 KiB
Kotlin
Vendored
99 lines
2.3 KiB
Kotlin
Vendored
interface B
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fun equalityNotApplicable(a: Int, b: B) {
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<!EQUALITY_NOT_APPLICABLE!>a == b<!>
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}
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fun equalityNotApplicableSmartCast(a: Any?, b: Any?) {
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if (a is Int && b is B) {
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<!EQUALITY_NOT_APPLICABLE_WARNING!>a == b<!>
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}
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}
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@JvmInline
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value class C(val int: Int)
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@JvmInline
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value class D(val bool: Boolean)
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fun forbiddenIdentityEquals(c: C, d: D) {
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<!FORBIDDEN_IDENTITY_EQUALS!>c === d<!>
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}
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fun forbiddenIdentityEqualsSmartCast(c: Any?, d: Any?) {
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if (c is C && d is D) {
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<!FORBIDDEN_IDENTITY_EQUALS_WARNING!>c === d<!>
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}
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}
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fun implicitBoxingInIdentityEquals(i: Int, a: Any?) {
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<!IMPLICIT_BOXING_IN_IDENTITY_EQUALS!>i === a<!>
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}
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fun implicitBoxingInIdentityEqualsSmartCast(i: Any?, a: Any?) {
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if (i is Int) {
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<!IMPLICIT_BOXING_IN_IDENTITY_EQUALS!>i === a<!>
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}
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}
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fun deprecatedIdentityEquals(a: Int, b: Int) {
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<!DEPRECATED_IDENTITY_EQUALS!>a === b<!>
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}
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fun deprecatedIdentityEqualsSmartCast(a: Any?, b: Any?) {
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if (a is Int && b is Int) {
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<!DEPRECATED_IDENTITY_EQUALS!>a === b<!>
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}
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}
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fun incompatibleTypes(a: Int) = when(a) {
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<!INCOMPATIBLE_TYPES!>C(10)<!> -> 1
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else -> 2
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}
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fun incompatibleTypesSmartCast(a: Any?) {
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if (a is Int) {
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when(a) {
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<!INCOMPATIBLE_TYPES!>C(10)<!> -> 1
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else -> 2
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}
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}
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}
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enum class E {
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A, B
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}
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fun incompatibleEnumComparison(c: B, e: E) {
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<!INCOMPATIBLE_ENUM_COMPARISON_ERROR!>c == e<!>
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}
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fun incompatibleEnumComparisonSmartCast(c: Any?, e: Any?) {
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if (c is B && e is E) {
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<!INCOMPATIBLE_ENUM_COMPARISON!>c == e<!>
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}
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}
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fun incompatibleIdentityRegardlessNullability(a: Int?, b: String?) {
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<!EQUALITY_NOT_APPLICABLE!>a == b<!>
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<!FORBIDDEN_IDENTITY_EQUALS!>a === b<!>
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}
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fun incompatibleIdentityRegardlessNullabilitySmartCast(a: Any?, b: Any?) {
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if (a is Int? && b is String?) {
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<!EQUALITY_NOT_APPLICABLE_WARNING!>a == b<!>
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<!FORBIDDEN_IDENTITY_EQUALS_WARNING!>a === b<!>
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}
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}
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fun incompatibleIdentityRegardlessNullabilityWithValueClasses(c: C?, d: D?) {
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<!EQUALITY_NOT_APPLICABLE!>c == d<!>
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<!FORBIDDEN_IDENTITY_EQUALS!>c === d<!>
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}
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fun incompatibleIdentityRegardlessNullabilityWithValueClassesSmartCast(c: Any?, d: Any?) {
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if (c is C? && d is D?) {
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<!EQUALITY_NOT_APPLICABLE_WARNING!>c == d<!>
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<!FORBIDDEN_IDENTITY_EQUALS_WARNING!>c === d<!>
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}
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}
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