/
t9102.scala
43 lines (37 loc) · 1.49 KB
/
t9102.scala
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object Test extends App {
import reflect.runtime._, universe._
class C { def f(i: Int, j: => Int) = i + j }
class V(val v: Int) extends AnyVal { def doubled = 2 * v }
class D { def f(i: Int, j: V) = i + j.doubled }
class E(i: Int, j: V)
locally {
val ms = typeOf[C].member(TermName("f")).asMethod
val im = currentMirror reflect (new C)
val mm = im reflectMethod ms
assert(mm(2,3) == 5)
}
locally {
val ms = typeOf[D].member(TermName("f")).asMethod
val im = currentMirror reflect (new D)
val mm = im reflectMethod ms
assert(mm(2, new V(3)) == 8)
}
locally {
val ms = typeOf[E].typeSymbol.asClass.primaryConstructor
val cm = currentMirror reflectClass typeOf[E].typeSymbol.asClass
val mm = cm reflectConstructor ms.asMethod
assert(mm(42, new V(7)).isInstanceOf[E])
}
}
/* was:
scala> res3(2,3)
java.lang.IllegalArgumentException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at scala.reflect.runtime.JavaMirrors$JavaMirror$JavaMethodMirror.jinvokeraw(JavaMirrors.scala:335)
at scala.reflect.runtime.JavaMirrors$JavaMirror$JavaMethodMirror.jinvoke(JavaMirrors.scala:339)
at scala.reflect.runtime.JavaMirrors$JavaMirror$JavaTransformingMethodMirror.apply(JavaMirrors.scala:436)
... 33 elided
*/