tests/base_attr_lazy.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 Foo
  18         var a1: Object = fa1 is lazy
  19         var a2: Object = fa2 is lazy
  20         fun fa1: Object do
  21                 1.output
  22                 return 10
  23         end
  24         fun fa2: Object do
  25                 2.output
  26                 return 20
  27         end
  28         #alt1#var a3: Object is lazy
  29         #alt2#fun a4: Object is lazy
  30 end
  31
  32 var f = new Foo
  33 f.a1.output
  34 f.a1.output
  35 f.a2.output
  36 f.a2.output
  37 '\n'.output
  38
  39 var g = new Foo
  40 g.a2.output
  41 g.a1.output
  42 g.a2.output
  43 g.a1.output
  44 '\n'.output
  45
  46 var h = new Foo
  47 h.a1 = 100
  48 h.a1.output
  49 h.a1.output