mcs/tests/test-iter-07.cs

   1 // Compiler options: -langversion:default
   2
   3 using System;
   4 using System.Collections;
   5
   6 public class Test
   7 {
   8         public IEnumerable Foo (int a)
   9         {
  10                 try {
  11                         try {
  12                                 yield return a;
  13                         } finally {
  14                                 Console.WriteLine ("Hello World");
  15                         }
  16
  17                         Console.WriteLine ("Next block");
  18
  19                         try {
  20                                 yield return a * a;
  21                         } finally {
  22                                 Console.WriteLine ("Boston");
  23                         }
  24                 } finally {
  25                         Console.WriteLine ("Outer finally");
  26                 }
  27
  28                 Console.WriteLine ("Outer block");
  29                 yield break;
  30         }
  31 }
  32
  33 class X
  34 {
  35         public static int Main ()
  36         {
  37                 Test test = new Test ();
  38
  39                 ArrayList list = new ArrayList ();
  40                 foreach (object o in test.Foo (5))
  41                         list.Add (o);
  42
  43                 if (list.Count != 2)
  44                         return 1;
  45                 if ((int) list [0] != 5)
  46                         return 2;
  47                 if ((int) list [1] != 25)
  48                         return 3;
  49
  50                 IEnumerable a = test.Foo (5);
  51
  52                 IEnumerator b = a as IEnumerator;
  53                 if (b != null) {
  54                         if (b.MoveNext ())
  55                                 return 4;
  56                 }
  57
  58                 IEnumerator c = a.GetEnumerator ();
  59                 if (!c.MoveNext ())
  60                         return 5;
  61                 if ((int) c.Current != 5)
  62                         return 6;
  63                 if (!c.MoveNext ())
  64                         return 7;
  65                 if ((int) c.Current != 25)
  66                         return 8;
  67
  68                 IEnumerator d = a.GetEnumerator ();
  69
  70                 if ((int) c.Current != 25)
  71                         return 9;
  72                 if (!d.MoveNext ())
  73                         return 10;
  74                 if ((int) c.Current != 25)
  75                         return 11;
  76                 if ((int) d.Current != 5)
  77                         return 12;
  78
  79                 if (c.MoveNext ())
  80                         return 13;
  81
  82                 ((IDisposable) a).Dispose ();
  83                 return 0;
  84         }
  85 }