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class A {
override def equals(x: Any) = {
x.isInstanceOf[A] && !x.isInstanceOf[B]
}
}
class B extends A {
override def equals(x: Any) = {
x.isInstanceOf[B]
}
}
class C {
def a(x: String) = 1
def a(x: Array[_]) = "a"
def b(x: String) = new A
def b(x: Array[_]) = new B
def c(x: String) = new B
def c(x: Array[_]) = "a"
}
object Test extends App {
val cm = reflect.runtime.currentMirror
val u = cm.universe
val c = new C
val im = cm.reflect(c)
def invoke(s: String, expectedType: u.Type, expectedResult: Any) {
val ol = (u.typeOf[C] member u.newTermName(s)).asTermSymbol
val methodSym = ol.resolveOverloaded(posVargs = List(u.typeOf[Null]), expected = expectedType).asMethodSymbol
val sig = methodSym.typeSignature.asInstanceOf[u.MethodType]
val method = im.reflectMethod(methodSym)
assert(method(null) == expectedResult)
}
invoke("a", u.typeOf[Int], c.a(null): Int)
invoke("a", u.typeOf[String], c.a(null): String)
invoke("b", u.typeOf[B], c.b(null): B)
invoke("c", u.typeOf[A], c.c(null): A)
invoke("c", u.typeOf[A], c.c(null): A)
invoke("c", u.typeOf[B], c.c(null): B)
invoke("c", u.typeOf[String], c.c(null): String)
}
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