gcc/testsuite/gdc.test/runnable/testsignals.d

   1 // RUNNABLE_PHOBOS_TEST
   2 import std.stdio;
   3 import std.signals;
   4
   5 class Observer
   6 {   // our slot
   7     void watch(string msg, int i)
   8     {
   9         writefln("Observed msg '%s' and value %s", msg, i);
  10     }
  11
  12     void watch2(int i, int j)
  13     {
  14         writefln("Observed msg %s,%s", i, j);
  15     }
  16 }
  17
  18 class Foo
  19 {
  20     int value() { return _value; }
  21
  22     int value(int v)
  23     {
  24         if (v != _value)
  25         {   _value = v;
  26             // call all the connected slots with the two parameters
  27             emit("setting new value", v);
  28         }
  29         return v;
  30     }
  31
  32     // Mix in all the code we need to make Foo into a signal
  33     mixin Signal!(string, int);
  34
  35   private :
  36     int _value;
  37 }
  38
  39 void test1()
  40 {
  41     Foo a = new Foo;
  42     Observer o = new Observer;
  43
  44     a.value = 3;                // should not call o.watch()
  45     a.connect(&o.watch);        // o.watch is the slot
  46     a.value = 4;                // should call o.watch()
  47     a.disconnect(&o.watch);     // o.watch is no longer a slot
  48     a.value = 5;                // so should not call o.watch()
  49     a.connect(&o.watch);        // connect again
  50     a.value = 6;                // should call o.watch()
  51     delete o;                   // destroying o should automatically disconnect it
  52     a.value = 7;                // should not call o.watch()
  53 }
  54
  55 /******************************************/
  56
  57 class Input
  58 {
  59     mixin Signal!(int, int) click;
  60     mixin Signal!(char) keyDown;
  61 }
  62
  63 void test2()
  64 {
  65     Observer o = new Observer();
  66     Input a = new Input();
  67     a.click.connect(&o.watch2);
  68     a.click.emit(5,6);
  69 }
  70
  71 /******************************************/
  72
  73 class Args3
  74 {
  75         int foo;
  76 }
  77
  78 class Base3
  79 {
  80         ~this()
  81         {
  82                 writefln("Base3 dtor!");
  83         }
  84 }
  85
  86 class Test3 : Base3
  87 {
  88         mixin Signal!(Args3) A;
  89         mixin Signal!(Args3) B;
  90
  91         ~this()
  92         {
  93                 writefln("Test3 dtor");
  94         }
  95 }
  96
  97
  98 void test3()
  99 {
 100         auto test = new Test3;
 101 }
 102
 103
 104 /******************************************/
 105
 106 int main()
 107 {
 108     test1();
 109     test2();
 110     test3();
 111
 112     printf("Success\n");
 113     return 0;
 114 }