tests/base_isa.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 O
  20 end
  21
  22 class A
  23 special O
  24         init do end
  25 end
  26
  27 class U
  28 end
  29
  30 class B
  31 special A
  32 special U
  33         redef init do end
  34 end
  35
  36 var a: Object = new A
  37 var b: Object = new B
  38
  39 (a isa Object).output
  40 (a isa O).output
  41 (a isa A).output
  42 (not a isa U).output
  43 (not a isa B).output
  44 (not a isa Int).output
  45 (not a isa Comparable).output
  46
  47 '\n'.output
  48
  49 (b isa Object).output
  50 (b isa O).output
  51 (b isa A).output
  52 (b isa U).output
  53 (b isa B).output
  54 (not b isa Int).output
  55 (not b isa Comparable).output