mcs/tests/test-16.cs

   1 using System;
   2
   3 namespace Mine {
   4
   5         public class Blah {
   6
   7                 public static int operator + (Blah i, Blah j)
   8                 {
   9                         Console.WriteLine ("Base class binary + operator");
  10                         return 2;
  11                 }
  12
  13                 public static implicit operator int (Blah i)
  14                 {
  15                         Console.WriteLine ("Blah->int");
  16                         return 3;
  17                 }
  18
  19                 public static implicit operator byte (Blah i)
  20                 {
  21                         Console.WriteLine ("Blah->byte");
  22                         return 0;
  23                 }
  24
  25                 public static implicit operator short (Blah i)
  26                 {
  27                         Console.WriteLine ("Blah->short");
  28                         return 1;
  29                 }
  30
  31         }
  32
  33         public class Foo : Blah {
  34
  35                 public static int Main ()
  36                 {
  37                         int number = new Foo () + new Foo () ;
  38                         Console.WriteLine (number);
  39
  40                         Foo tmp = new Foo ();
  41
  42                         int k = tmp;
  43
  44                         Console.WriteLine ("Convert from Foo to float");
  45                         float f = tmp;
  46                         Console.WriteLine ("Converted");
  47
  48                         // The following will not work till we fix our UserCast::Emit
  49                         // to convert the return value on the stack.
  50                         if (f == 3)
  51                                 Console.WriteLine ("Best implicit conversion selected correctly.");
  52
  53                         Console.WriteLine ("F is {0}", f);
  54
  55                         if (number == 2 && k == 3)
  56                                 return 0;
  57                         else
  58                                 return 1;
  59                 }
  60         }
  61 }