# This file is part of NIT ( http://www.nitlanguage.org ). # # Copyright 2012 Alexandre Terrasa # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import base_minimal class A end class B[T] super A end class C super A end class D[T, U] super B[T] super C end class E[T] super D[T, Object] end class F super D[Object, Object] end class G[T: Object] super F end class H end var a = new A var b = new B[Object] var b2 = new B[H] var b3 = new B[F] var c = new C var d = new D[Object, Object] var e = new E[F] var f = new F var g = new G[Object] assert f isa A assert f isa C assert not f isa G[Object] assert g isa D[Object, Object] assert e isa D[Object, Object] assert e isa D[A, Object] assert not e isa D[H, Object] assert e isa D[F, Object] true.output