mcs/tests/test-pattern-06.cs

   1 // Compiler options: -langversion:experimental
   2
   3 using System;
   4
   5 class RecursiveNamedPattern
   6 {
   7         public static int Main ()
   8         {
   9                 if (Switch_1 (null) != 4)
  10                         return 1;
  11
  12                 if (Switch_1 ("x") != 5)
  13                         return 2;
  14
  15                 if (Switch_1 (1) != 1)
  16                         return 3;
  17
  18 //              if (Switch_1 (new C1 ()) != 3)
  19 //                      return 4;
  20
  21                 if (Switch_1 ((byte?) 1) != 1)
  22                         return 5;
  23
  24                 if (Switch_2 (new C1 ()) != 3)
  25                         return 10;
  26
  27                 if (Switch_2 (null) != 2)
  28                         return 11;
  29
  30                 Console.WriteLine ("ok");
  31                 return 0;
  32         }
  33
  34         static int Switch_1 (object o)
  35         {
  36                 switch (o) {
  37                         case 1:
  38                                 return 1;
  39 //                      case C1 (3):
  40 //                              return 2;
  41 //                      case C1 (2):
  42 //                              return 3;
  43                         case null:
  44                                 return 4;
  45                         default:
  46                                 return 5;
  47                 }
  48         }
  49
  50         static int Switch_2 (C1 o)
  51         {
  52                 switch (o) {
  53                         case null:
  54                                 return 2;
  55                 }
  56
  57                 return 3;
  58         }
  59 }
  60
  61 public class C1
  62 {
  63         public static bool operator is (C1 c1, out int i)
  64         {
  65                 i = 2;
  66                 return true;
  67         }
  68 }