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trait A extends DelayedInit {
print("-A ")
def delayedInit(body: => Unit) = {
body
postConstructionCode
}
protected def postConstructionCode: Unit = {
print("\nA+ ")
}
}
trait B extends A {
print("-B ")
override protected def postConstructionCode: Unit = {
super.postConstructionCode
print("B+ ")
}
}
trait C extends B {
print("-C ")
override protected def postConstructionCode: Unit = {
super.postConstructionCode
print("C+ ")
}
}
class D() extends C {
print("-D ")
override protected def postConstructionCode: Unit = {
super.postConstructionCode
print("D+ ")
}
}
class E() extends D() {
println("-E")
override protected def postConstructionCode: Unit = {
super.postConstructionCode
println("E+")
}
}
object Test {
def p(msg: String) = println("\n\n// " + msg)
def main(args: Array[String]): Unit = {
p("new C { }")
new C { }
p("new C { 5 }")
new C { 5 }
p("new D()")
new D()
p("new D() { }")
new D() { }
p("new D() { val x = 5 }")
new D() { val x = 5 }
p("new { val x = 5 } with D()")
new D() {
// TODO NEEDS MANUAL CHANGE (early initializers)
// BEGIN copied early initializers
val x = 5
// END copied early initializers
}
p("new E() { val x = 5 }")
new E() { val x = 5 }
p("new { val x = 5 } with E()")
new E() {
// TODO NEEDS MANUAL CHANGE (early initializers)
// BEGIN copied early initializers
val x = 5
// END copied early initializers
}
p("new { val x = 5 } with E() { }")
new E() {
// TODO NEEDS MANUAL CHANGE (early initializers)
// BEGIN copied early initializers
val x = 5
// END copied early initializers
}
p("new { val x = 5 } with E() { 5 }")
new E() {
// TODO NEEDS MANUAL CHANGE (early initializers)
// BEGIN copied early initializers
val x = 5
// END copied early initializers
5 }
}
}
|
