tests/base_var_type_evolution.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Copyright 2010 Jean Privat <jean@pryen.org>
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at
   8 #
   9 #     http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 # See the License for the specific language governing permissions and
  15 # limitations under the License.
  16
  17 import kernel
  18
  19 class A
  20         fun a do 'A'.output
  21 end
  22
  23 class B
  24         super A
  25         fun b do 'B'.output
  26 end
  27
  28 class C
  29         super A
  30         fun c do 'C'.output
  31 end
  32
  33 fun rand: Bool do return true
  34
  35 var a = new A
  36 if rand then
  37         a = new B
  38 end
  39 a.a
  40 #alt1#a.b
  41 '\n'.output
  42
  43 a = new B
  44 if rand then
  45         a = new B
  46         #alt2#a = new C
  47         #alt3#a = new A
  48 end
  49 a.a
  50 a.b
  51 '\n'.output
  52
  53 a = new A
  54 if rand then
  55         a = new B
  56         #alt4#a = new C
  57 else
  58         a = new B
  59         #alt5#a = new C
  60 end
  61 a.a
  62 a.b
  63 '\n'.output
  64
  65 a = new A
  66 if rand then
  67         a = new B
  68 else
  69         a = new C
  70         abort#!alt6#
  71 end
  72 a.a
  73 a.b
  74 #alt7#a.c
  75 '\n'.output
  76