tests/base_at_cached.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 kernel
  16
  17 class Base
  18         var foo: Int = 10
  19         fun -: Int do return foo + 20
  20         fun bar: Int do return -self + 40
  21 end
  22
  23 class CMinus
  24         super Base
  25
  26         redef fun - is cached do return foo + 1
  27 end
  28
  29 class CBar
  30         super Base
  31
  32         redef fun bar is cached do return -self + 2
  33 end
  34
  35 fun test(b: Base)
  36 do
  37         b.foo.output
  38         (-b).output
  39         b.bar.output
  40         b.foo = 110
  41         b.foo.output
  42         (-b).output
  43         b.bar.output
  44         '\n'.output
  45 end
  46
  47 test(new Base)
  48 test(new CMinus)
  49 test(new CBar)