Use a nicer Show impl for Name

src/libsyntax/ast.rs

@@ -58,7 +58,14 @@ impl Ident {
 
 impl Show for Ident {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "\"{}\"#{}", token::get_ident(*self).get(), self.ctxt)
+        write!(f, "{}#{}", self.name, self.ctxt)
+    }
+}
+
+impl Show for Name {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        let Name(nm) = *self;
+        write!(f, "\"{}\"({})", token::get_name(*self).get(), nm)
     }
 }
 
@@ -106,7 +113,7 @@ pub static ILLEGAL_CTXT : SyntaxContext = 1;
 
 /// A name is a part of an identifier, representing a string or gensym. It's
 /// the result of interning.
-#[deriving(Eq, Ord, PartialEq, PartialOrd, Hash, Encodable, Decodable, Clone, Show)]
+#[deriving(Eq, Ord, PartialEq, PartialOrd, Hash, Encodable, Decodable, Clone)]
 pub struct Name(pub u32);
 
 impl Name {

src/libsyntax/print/pprust.rs

@@ -864,6 +864,11 @@ impl<'a> State<'a> {
             self.end() // close the outer-box
         } else {
             try!(self.nbsp());
+            if struct_def.fields.len() == 0 {
+                try!(self.s.print_str(";"));
+                return Ok(());
+            }
+
             try!(self.bopen());
             try!(self.hardbreak_if_not_bol());