---

yaml
---
r: 205116
b: refs/heads/tmp
c: 77d5921
h: refs/heads/master
v: v3

Author: aochagavia

[refs]

@@ -32,7 +32,7 @@ refs/heads/building: 126db549b038c84269a1e4fe46f051b2c15d6970
 refs/heads/beta: f0213d8ffb128a16f94af7ee985dc61484596163
 refs/heads/windistfix: 7608dbad651f02e837ed05eef3d74a6662a6e928
 refs/tags/1.0.0-alpha: e42bd6d93a1d3433c486200587f8f9e12590a4d7
-refs/heads/tmp: 57690399a2ab6dd579ea1f97e9866b213f8b14d4
+refs/heads/tmp: 77d59217a38e2982fdcf6bff800f1c9acc0d9aaf
 refs/tags/1.0.0-alpha.2: 4c705f6bc559886632d3871b04f58aab093bfa2f
 refs/tags/homu-tmp: f0ac7e04e647381e2bb87de1f3d0b108acb24d06
 refs/heads/gate: 97c84447b65164731087ea82685580cc81424412

branches/tmp/src/libsyntax/ext/base.rs

@@ -150,6 +150,29 @@ impl Annotatable {
     }
 }
 
+// A more flexible ItemDecorator.
+pub trait MultiItemDecorator {
+    fn expand(&self,
+              ecx: &mut ExtCtxt,
+              sp: Span,
+              meta_item: &ast::MetaItem,
+              item: &Annotatable,
+              push: Box<FnMut(P<Annotatable>)>);
+}
+
+impl<F> MultiItemDecorator for F
+    where F : Fn(&mut ExtCtxt, Span, &ast::MetaItem, &Annotatable, Box<FnMut(P<Annotatable>)>)
+{
+    fn expand(&self,
+              ecx: &mut ExtCtxt,
+              sp: Span,
+              meta_item: &ast::MetaItem,
+              item: &Annotatable,
+              push: Box<FnMut(P<Annotatable>)>) {
+        (*self)(ecx, sp, meta_item, item, push)
+    }
+}
+
 // A more flexible ItemModifier (ItemModifier should go away, eventually, FIXME).
 // meta_item is the annotation, item is the item being modified, parent_item
 // is the impl or trait item is declared in if item is part of such a thing.