tests/base_adaptive_loop3.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 redef class Int
  18         fun next: nullable Int do if self < 20 then return self + 1 else return null
  19 end
  20
  21 var t2: nullable Int = 10
  22 t2.output
  23 while t2 != null do
  24         t2 = t2.next #alt1# t2 = null
  25         while t2 != null do
  26                 t2.output
  27                 t2 = t2.next #alt2# t2 = null
  28         end
  29         #alt3#t2 = t2.next
  30         #alt3#exit(0)
  31 end