tests/base_classid.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Copyright 2005-2008 Jean Privat <jean@pryen.org>
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at
   8 #
   9 #     http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 # See the License for the specific language governing permissions and
  15 # limitations under the License.
  16
  17 import kernel
  18
  19 class A
  20         init do end
  21 end
  22
  23 class B
  24 special A
  25         fun unreasheable
  26         do
  27                 var a: A
  28                 a = new B
  29                 (a isa C).output
  30         end
  31         init do end
  32 end
  33
  34 class C
  35 special A
  36         init do end
  37 end
  38
  39 var a: A = new A
  40 var ab: A = new B
  41 var b: B = new B
  42
  43
  44
  45 (not(a == b)).output
  46 (a == a).output
  47 (a isa A).output
  48 (ab isa A).output
  49 (b isa A).output
  50 (not(a isa B)).output
  51 (ab isa B).output
  52 (b isa B).output