tests/base_gen_nest.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at
   6 #
   7 #     http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14
  15 import core::kernel
  16
  17 class G[E: Object]
  18         var e: E
  19         fun foo: Object
  20         do
  21                 var e = self.e
  22                 if e isa G[Object] then
  23                         return e.foo
  24                 end
  25                 return e
  26         end
  27 end
  28
  29 var g1 = new G[Float](1.0)
  30 var g2 = new G[G[Float]](g1)
  31 g2.foo.output