Auto merge of #27296 - jroesch:type-macros, r=huonw

This pull request implements the functionality for [RFC 873](https://github.com/rust-lang/rfcs/blob/master/text/0873-type-macros.md). This is currently just an update of @freebroccolo's branch from January, the corresponding commits are linked in each commit message.

@nikomatsakis and I had talked about updating the macro language to support a lifetime fragment specifier, and it is possible to do that work on this branch as well. If so we can (collectively) talk about it next week during the pre-RustCamp work week.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/libsyntax/print/pprust.rs b/src/libsyntax/print/pprust.rs
index f0973e0ba6e..3b8ee91374c 100644
--- a/src/libsyntax/print/pprust.rs
+++ b/src/libsyntax/print/pprust.rs
@@ -734,6 +734,9 @@ impl<'a> State<'a> {
             ast::TyInfer => {
                 try!(word(&mut self.s, "_"));
             }
+            ast::TyMac(ref m) => {
+                try!(self.print_mac(m, token::Paren));
+            }
         }
         self.end()
     }