[vala] Support [CCode (scope = "async")] attribute for delegates

[JÃrg Billeter <juergbi src gnome org>]

commit d755870599b4f99a810bfbdbc27e708eb8b553ee
Author: JÃrg Billeter <j bitron ch>
Date:   Thu Aug 2 14:32:47 2012 +0200

    Support [CCode (scope = "async")] attribute for delegates

 vala/valadelegatetype.vala |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/vala/valadelegatetype.vala b/vala/valadelegatetype.vala
index 2cc6cf0..91029d3 100644
--- a/vala/valadelegatetype.vala
+++ b/vala/valadelegatetype.vala
@@ -1,6 +1,6 @@
 /* valadelegatetype.vala
  *
- * Copyright (C) 2007-2010  JÃrg Billeter
+ * Copyright (C) 2007-2012  JÃrg Billeter
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -32,6 +32,7 @@ public class Vala.DelegateType : DataType {
 
 	public DelegateType (Delegate delegate_symbol) {
 		this.delegate_symbol = delegate_symbol;
+		this.is_called_once = (delegate_symbol.get_attribute_string ("CCode", "scope") == "async");
 	}
 
 	public override bool is_invokable () {