mcs/tests/test-async-70.cs

   1 using System;
   2 using System.Threading.Tasks;
   3
   4 class Test
   5 {
   6         static async Task<int> YieldValue (int a)
   7         {
   8                 await Task.Yield ();
   9                 return a;
  10         }
  11
  12         static async Task<int> TestNestedReturn (int v)
  13         {
  14                 int x = 0;
  15
  16                 try {
  17                         try {
  18                                 x = await YieldValue (1);
  19                                 Console.WriteLine ("T1");
  20                                 if (x == v)
  21                                         return 6;
  22                         } finally {
  23                                 Console.WriteLine ("F1");
  24
  25                                 x += await YieldValue (2);
  26                         }
  27
  28                         Console.WriteLine ("AF1");
  29                 } finally {
  30                         Console.WriteLine ("F2");
  31                         try {
  32                                 x += await YieldValue (4);
  33                                 Console.WriteLine ("T3");
  34                         } finally {
  35                                 Console.WriteLine ("F3");
  36                                 x += await YieldValue (8);
  37                         }
  38                 }
  39
  40                 Console.WriteLine ("END");
  41
  42                 return x;
  43         }
  44
  45         static async Task<int> TestNestedGoto (int v)
  46         {
  47                 int x = 0;
  48
  49                 try {
  50                         try {
  51                                 Console.WriteLine ("T1");
  52                                 if (x == v)
  53                                         goto L;
  54
  55                                 x = await YieldValue (1);
  56                         } finally {
  57                                 Console.WriteLine ("F1");
  58
  59                                 x += await YieldValue (2);
  60                         }
  61
  62                         Console.WriteLine ("AF1");
  63                 } finally {
  64                         Console.WriteLine ("F2");
  65                         try {
  66                                 x += await YieldValue (4);
  67                                 Console.WriteLine ("T3");
  68                         } finally {
  69                                 Console.WriteLine ("F3");
  70                                 x += await YieldValue (8);
  71                         }
  72                 }
  73
  74                 Console.WriteLine ("END");
  75 L:
  76                 Console.WriteLine ("END L");
  77
  78                 return x;
  79         }
  80
  81         public static int Main ()
  82         {
  83                 if (TestNestedReturn (1).Result != 6)
  84                         return 1;
  85
  86                 if (TestNestedReturn (0).Result != 15)
  87                         return 2;
  88
  89                 if (TestNestedGoto (1).Result != 15)
  90                         return 3;
  91
  92                 if (TestNestedGoto (0).Result != 14)
  93                         return 4;
  94
  95                 return 0;
  96         }
  97 }