tests/base_attr4.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 A
  18         fun foo: Int do return 1
  19         fun bar=(i: Int) do i.output
  20         fun baz: Int do return 4
  21         fun baz=(i: Int) do i.output
  22 end
  23
  24 class B
  25         super A
  26         redef var foo: Int = 20
  27         var bar: Int = 30 is redef writable
  28         redef var baz: Int = 40 is redef writable
  29 end
  30
  31 class C
  32         super B
  33         redef fun foo: Int do return 100
  34         redef fun bar=(i: Int) do
  35                 super
  36                 i.output
  37         end
  38         redef fun baz: Int do return 400
  39         redef fun baz=(i: Int) do
  40                 super
  41                 i.output
  42         end
  43 end
  44
  45 var a = new A
  46 #alt1#a.foo = 1
  47 a.foo.output
  48 a.bar = 2
  49 #alt2#a.bar.output
  50 a.baz = 3
  51 a.baz.output
  52
  53 '\n'.output
  54
  55 var b = new B
  56 b.foo = 10
  57 b.foo.output
  58 b.bar = 20
  59 b.bar.output
  60 b.baz = 30
  61 b.baz.output
  62
  63 '\n'.output
  64
  65 var c = new C
  66 c.foo = 100
  67 c.foo.output
  68 c.bar = 200
  69 c.bar.output
  70 c.baz = 300
  71 c.baz.output