tests/delegates/casting.vala

   1 delegate void FooFunc ();
   2
   3 [CCode (has_target = false)]
   4 delegate void FooFuncTargetless ();
   5
   6 class Foo : Object {
   7         public Foo () {
   8                 baz (func);
   9                 assert (ref_count == 1);
  10
  11                 bar (func);
  12                 assert (ref_count == 1);
  13
  14                 baz ((FooFunc) func);
  15                 assert (ref_count == 1);
  16
  17                 bar ((FooFunc) func);
  18                 assert (ref_count == 1);
  19
  20                 man ((FooFuncTargetless) func);
  21                 assert (ref_count == 1);
  22
  23                 maz ((FooFuncTargetless) func);
  24                 assert (ref_count == 1);
  25         }
  26
  27         public void func () {
  28         }
  29
  30         void baz (FooFunc f) {
  31                 assert (ref_count == 1);
  32         }
  33
  34         void bar (owned FooFunc f) {
  35                 assert (ref_count == 2);
  36         }
  37
  38         void man (FooFuncTargetless f) {
  39                 assert (ref_count == 1);
  40         }
  41
  42         void maz (owned FooFuncTargetless f) {
  43                 assert (ref_count == 1);
  44         }
  45 }
  46
  47 void func () {
  48 }
  49
  50 void main () {
  51         var foo = new Foo ();
  52         assert (foo.ref_count == 1);
  53
  54         FooFunc f0 = foo.func;
  55         assert (foo.ref_count == 2);
  56         f0 = null;
  57         assert (foo.ref_count == 1);
  58
  59         var f1 = (FooFunc) foo.func;
  60         assert (foo.ref_count == 2);
  61         f1 = null;
  62         assert (foo.ref_count == 1);
  63
  64         unowned FooFunc f2 = foo.func;
  65         assert (foo.ref_count == 1);
  66         f2 = null;
  67         assert (foo.ref_count == 1);
  68
  69         unowned FooFunc f3 = (FooFunc) foo.func;
  70         assert (foo.ref_count == 1);
  71         f3 = null;
  72         assert (foo.ref_count == 1);
  73
  74         var f4 = (FooFuncTargetless) foo.func;
  75         assert (foo.ref_count == 1);
  76         f4 = null;
  77         assert (foo.ref_count == 1);
  78
  79         FooFuncTargetless f5 = func;
  80         f5 = null;
  81
  82         var f6 = (FooFuncTargetless) func;
  83         f6 = null;
  84
  85         unowned FooFuncTargetless f7 = func;
  86         f7 = null;
  87
  88         unowned FooFuncTargetless f8 = (FooFuncTargetless) func;
  89         f8 = null;
  90 }