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/**
* Tries to load a symbol for the `Foo$class` using Scala reflection.
* Since trait implementation classes do not get pickling information
* symbol for them should be created using fallback mechanism
* that exposes Java reflection information dressed up in
* a Scala symbol.
*/
object Test extends App with Outer {
import scala.reflect.mirror
assert(mirror.classToSymbol(manifest[Foo].erasure).typeSignature.declaration(mirror.newTermName("bar")).typeSignature ==
mirror.classToSymbol(manifest[Bar].erasure).typeSignature.declaration(mirror.newTermName("foo")).typeSignature)
val s1 = implClass(manifest[Foo].erasure)
assert(s1 != mirror.NoSymbol)
assert(s1.typeSignature != mirror.NoType)
assert(s1.companionSymbol.typeSignature != mirror.NoType)
assert(s1.companionSymbol.typeSignature.declaration(mirror.newTermName("bar")) != mirror.NoSymbol)
val s2 = implClass(manifest[Bar].erasure)
assert(s2 != mirror.NoSymbol)
assert(s2.typeSignature != mirror.NoType)
assert(s2.companionSymbol.typeSignature != mirror.NoType)
assert(s2.companionSymbol.typeSignature.declaration(mirror.newTermName("foo")) != mirror.NoSymbol)
def implClass(clazz: Class[_]) = {
val implClass = Class.forName(clazz.getName + "$class")
mirror.classToSymbol(implClass)
}
}
trait Foo {
def bar = 1
}
trait Outer {
trait Bar {
def foo = 1
}
}
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