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abstract class A0 {
def print(): String
}
class A extends A0 {
def print(): String = "A"
}
abstract class B extends A {
def print() : String
}
class C extends B {
override def print(): String = super.print() // should be an error
}
trait T extends B {
override def print(): String = super.print() // should be an error
}
class D extends A {
override def print(): String = super.print() // okay
}
// it's okay do this when trait are in the mix, as the
// suitable super accessor methods are used.
object ConcreteMethodAndIntermediaryAreTraits {
trait T1 {
def print(): String = ""
}
trait T2 extends T1 {
def print(): String
}
class C3 extends T2 {
def print(): String = super.print() // okay
}
}
object IntermediaryIsTrait {
class T1 {
def print(): String = ""
}
trait T2 extends T1 {
def print(): String
}
class C3 extends T2 {
override def print(): String = super.print() // okay
}
}
object ConcreteMethodIsTrait {
trait T1 {
def print(): String = ""
}
abstract class T2 extends T1 {
def print(): String
}
class C3 extends T2 {
override def print(): String = super.print() // okay
}
}
|
