tests/delegates.vala

   1 using GLib;
   2
   3 public static delegate void Maman.VoidCallback ();
   4
   5 public static delegate int Maman.ActionCallback ();
   6
   7 public delegate void Maman.InstanceCallback (int i);
   8
   9 struct Maman.DelegateStruct {
  10         public VoidCallback callback;
  11 }
  12
  13 interface Maman.Foo : Object {
  14         public abstract void foo_method (int i);
  15 }
  16
  17 class Maman.Bar : Object, Foo {
  18         const DelegateStruct const_delegate_struct = { do_void_action };
  19
  20         public Bar () {
  21         }
  22
  23         static void do_void_action () {
  24                 stdout.printf (" 2");
  25         }
  26
  27         static int do_action () {
  28                 return 4;
  29         }
  30
  31         void do_instance_action (int i) {
  32                 assert (i == 42);
  33
  34                 stdout.printf (" 6");
  35         }
  36
  37         static void call_instance_delegate (InstanceCallback instance_cb) {
  38                 instance_cb (42);
  39         }
  40
  41         static void test_function_pointers () {
  42                 stdout.printf ("testing function pointers:");
  43                 var table = new HashTable<string, Bar>.full (str_hash, str_equal, g_free, Object.unref);
  44                 stdout.printf (" 1");
  45
  46                 table.insert ("foo", new Bar ());
  47                 stdout.printf (" 2");
  48
  49                 var bar = table.lookup ("foo");
  50                 stdout.printf (" 3\n");
  51         }
  52
  53         public void foo_method (int i) {
  54         }
  55
  56         static void test_delegates_interface_method () {
  57                 // http://bugzilla.gnome.org/show_bug.cgi?id=518109
  58                 var bar = new Bar ();
  59                 call_instance_delegate (bar.foo_method);
  60         }
  61
  62         static int main (string[] args) {
  63                 stdout.printf ("Delegate Test: 1");
  64
  65                 VoidCallback void_cb = do_void_action;
  66
  67                 void_cb ();
  68
  69                 stdout.printf (" 3");
  70
  71                 ActionCallback cb = do_action;
  72
  73                 stdout.printf (" %d", cb ());
  74
  75                 stdout.printf (" 5");
  76
  77                 var bar = new Bar ();
  78
  79                 InstanceCallback instance_cb = bar.do_instance_action;
  80                 call_instance_delegate (instance_cb);
  81
  82                 stdout.printf (" 7\n");
  83
  84                 test_function_pointers ();
  85
  86                 test_delegates_interface_method ();
  87
  88                 return 0;
  89         }
  90 }