tests/test_ni_virtypes.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Copyright 2011 Alexis Laferrière <alexis.laf@xymus.net>
   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 class A
  18         type E : Object
  19 end
  20
  21 class B
  22         super A
  23         redef type E : Int
  24         fun f : E is extern
  25 end
  26
  27 class C
  28         super A
  29         redef type E : String
  30         fun f( v : E ) is extern
  31 end
  32
  33 class D
  34         super B
  35         redef fun f is extern
  36 end
  37
  38 var b = new B
  39 print b.f
  40
  41 var d = new D
  42 print d.f