Dmitry Petrov
5d9ee7efee
- base class method wins against a (default) interface method, so an abstract base class method should always be implemented in a derived class; - interface methods clash regardless of abstract/default with possibly undefined behavior at run-time, so a class or interface should always define its own method for methods inherited from multiple interfaces and not from base class; - meaningful diagnostics for class inheriting conflicting JVM signatures. Since no override will happen under Java 8 rules, ACCIDENTAL_OVERRIDE is misleading for this case; - update testData.
38 lines
495 B
Kotlin
Vendored
38 lines
495 B
Kotlin
Vendored
package override
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interface T {
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fun foo()
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val v : Int
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}
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open <!ABSTRACT_MEMBER_NOT_IMPLEMENTED!>class Br<!>(<!UNUSED_PARAMETER!>t<!> : T) : T {
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}
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<!ABSTRACT_CLASS_MEMBER_NOT_IMPLEMENTED!>class Br3<!>(t : T) : Br(t) {
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}
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open class Br1(t : T) : T by t {
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}
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class Br2(t : T) : Br1(t) {
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}
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interface G<T> {
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fun foo(t : T) : T
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}
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<!ABSTRACT_MEMBER_NOT_IMPLEMENTED!>class GC<!>() : G<Int> {
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}
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open class GC1(g : G<Int>) : G<Int> by g {
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}
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open class GC2(g : G<Int>) : GC1(g) {
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} |