mono/tests/generic-valuetype-interface.2.cs

   1 using System;
   2 using System.Collections.Generic;
   3
   4 public struct GenStruct<T> {
   5     public int inc (int i) {
   6         return i + 1;
   7     }
   8
   9     public T[] newArr () {
  10         return new T [3];
  11     }
  12 }
  13
  14 public class Bla {
  15     public bool work (IList<string> l) {
  16         foreach (string s in l) {
  17             if (s.Length != 1)
  18                 return false;
  19         }
  20         return true;
  21     }
  22 }
  23
  24 public interface GenInterface<T> {
  25     T[] newArr ();
  26 }
  27
  28 public struct GenIntStruct<T> : GenInterface<T> {
  29     public T[] newArr () {
  30         return new T [3];
  31     }
  32 }
  33
  34 public interface GenFactory<T> {
  35     GenInterface<T> makeInterface ();
  36 }
  37
  38 public class Gen<T> : GenFactory<T> {
  39     public GenInterface<T> makeInterface () {
  40         return new GenIntStruct<T> ();
  41     }
  42 }
  43
  44 public class NonGen : GenFactory<string> {
  45     public GenInterface<string> makeInterface () {
  46         return new GenIntStruct<string> ();
  47     }
  48 }
  49
  50 public class main {
  51     public static bool testInterface (GenFactory<string> gf) {
  52         GenInterface<string> gi = gf.makeInterface ();
  53         if (gi.newArr ().GetType () != typeof (string []))
  54             return false;
  55         return true;
  56     }
  57
  58     public static int Main () {
  59         GenStruct<object> gso = new GenStruct<object> ();
  60         GenStruct<string> gss = new GenStruct<string> ();
  61
  62         if (gso.inc (1) != 2)
  63             return 1;
  64         if (gss.inc (2) != 3)
  65             return 1;
  66
  67         if (gso.newArr ().GetType () != typeof (object []))
  68             return 1;
  69         if (gss.newArr ().GetType () != typeof (string []))
  70             return 1;
  71
  72         Gen<string> g = new Gen<string> ();
  73         testInterface (g);
  74
  75         NonGen ng = new NonGen ();
  76         testInterface (ng);
  77
  78         Bla bla = new Bla ();
  79         string [] arr = { "a", "b", "c" };
  80
  81         if (!bla.work (arr))
  82             return 1;
  83
  84         return 0;
  85     }
  86 }