tests/base_iterator2.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 class ColIterable
  16         fun iterator: MyIterator do return new MyIterator
  17 end
  18
  19 class MyIterator
  20         super Iterator[String]
  21
  22         var count = 0
  23         redef fun is_ok do return count < 3
  24         redef fun next do count += 1
  25         redef fun item do return "Item{count}"
  26 end
  27
  28 class MapIterable
  29         fun iterator: MyMapIterator do return new MyMapIterator
  30 end
  31
  32 class MyMapIterator
  33         super MapIterator[String, String]
  34
  35         var count = 0
  36         redef fun is_ok do return count < 3
  37         redef fun next do count += 1
  38         redef fun item do return "Item{count}"
  39         redef fun key do return "Key{count}"
  40 end
  41
  42 #ok
  43 var col = new ColIterable
  44 for v in col do print v
  45
  46 #ok
  47 var map = new MapIterable
  48 for k, v in map do print "{k}:{v}"
  49