nacl/test/hw.cs

   1 using System;
   2 using System.Runtime.CompilerServices;
   3 using System.Runtime.InteropServices;
   4 using System.Collections;
   5 using System.Text;
   6 using System.Threading;
   7
   8 namespace Test {
   9
  10         public class c_code {
  11
  12                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
  13                 public extern static void my_c_func(int x, string s, double d);
  14                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
  15                 public extern static void my_c_pass(int x);
  16         }
  17
  18         public class HelloWorld
  19         {
  20                 static public void Main ()
  21                 {
  22                 }
  23
  24                 static public void Foobar (int x, string s)
  25                 {
  26                         // first line is a simple test
  27                         // 1. call back into c code 2. use mscorlib Math.Sqrt()
  28                         c_code.my_c_func(x, s, Math.Sqrt(3.1415 * 3.1415));
  29
  30                         // second part of this test:
  31                         // attempt a try/catch, generate exception w/ throw
  32                         try {
  33                                 c_code.my_c_pass(0);
  34                                 // attempt an invalid cast
  35                                 throw new InvalidCastException();
  36                                 c_code.my_c_pass(1);
  37                         }
  38                         catch (InvalidCastException e) {
  39                                 c_code.my_c_pass(2);
  40                         }
  41                         c_code.my_c_pass(3);
  42
  43                         // third part of this test:
  44                         // attempt an invalid cast again, this time generating
  45                         // exception instead of using explicit throw.
  46                         try {
  47                                 c_code.my_c_pass(0);
  48                                 StringBuilder reference1 = new StringBuilder();
  49                                 object reference2 = reference1;
  50                                 // attempt invalid cast
  51                                 int reference3 = (int)reference2;
  52                                 c_code.my_c_pass(4);
  53                         }
  54                         catch (InvalidCastException e) {
  55                                 c_code.my_c_pass(5);
  56                         }
  57                         c_code.my_c_pass(3);
  58                 }
  59         }
  60 }