# 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 Animal end class Canard super Animal end class A end class B[T] super A end var b1 = new B[Canard] var b2 = new B[B[Canard]] assert b1 isa A # true assert b1 isa B[Canard] # true assert b1 isa B[Animal] # true assert not b1 isa B[Bool] # false assert not b2 isa B[Bool] # false assert b2 isa B[B[Canard]] # true assert not b2 isa B[B[Bool]] # false assert b2 isa B[B[Animal]] # true true.output