tests/error_virtual_type2.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]
  18 end
  19
  20 class A
  21         fun foo(t: T): Comparable do return t
  22         #fun foog: nullable G[T] do return barg
  23         type T: Comparable #alt1-5#
  24         type GT: G[T]
  25         #alt1#type T: T
  26         #alt2#type T: nullable T
  27         #alt3#type T: G[T]
  28         #alt4#type T: U
  29         #alt4#type U: FAIL
  30         #alt5#type T: U
  31         #alt5#type U: T
  32         fun bar(t: T): Comparable do return t
  33         #fun barg: nullable G[T] do return foog
  34 end
  35
  36 class B
  37         super A
  38         redef fun foo(t: T): T do return t
  39         #redef fun foog: GT do return barg
  40         redef type GT: G[Discrete]
  41         #alt6#redef type GT: G[Bool]
  42         redef fun bar(t: T): T do return t
  43         #redef fun barg: GT do return foog
  44 end
  45
  46 var a = new A
  47 a.foo(1)
  48 a.bar('1')
  49
  50 var b = new B
  51 b.foo(2)
  52 b.bar('3')