[Vala] modify simpletype with methods in vapi

[pancake <pancake youterm com>]

I've tried to do this without success:

  31 [SimpleType]
  32 [CCode (cname = "gboolean", cheader_filename = "glib.h", type_id = "G_TYPE_BOOLEAN", 
marshaller_type_name = "BOOLEAN", get     _value_function = "g_value_get_boolean", set_value_function = 
"g_value_set_boolean", default_value = "FALSE", type_signatu     re = "b")]
  33 [BooleanType]
  34 public struct bool {
  35         public string to_string () {
  36                 if (this) {
  37                         return "true";
  38                 } else {
  39                         return "false";
  40                 }
  41         }
  42         public bool toggle() {
  43                 this = !this;
  44                 return this;
  45         }
  46 }

This is part of glib-2.0.vapi, with my 'toggle' method.

I thought this should be a valid expression, but it results into:

 581 static gboolean bool_toggle (gboolean self) {
 583         gboolean result = FALSE;
 585         self = !self;
 587         result = self;
 589         return result;
 591 }

Which is obviously not modifying the value, unless I do an assignment like:

   bool foo = false;

   foo.toggle (); // does nothing
   foo = foo.toogle () //works

I was expecting both ways to work. what's the way to add this method to bool?

should this change be added in main glib.vapi ?

--pancake