Implement dyn Trait syntax

2017-10-10 17:33:19 +03:00
parent 3037965b5b
commit e6115af4bd
17 changed files with 149 additions and 41 deletions
--- a/src/libsyntax/print/pprust.rs
+++ b/src/libsyntax/print/pprust.rs
@@ -1049,8 +1049,9 @@ impl<'a> State<'a> {
            ast::TyKind::Path(Some(ref qself), ref path) => {
                self.print_qpath(path, qself, false)?
            }
-            ast::TyKind::TraitObject(ref bounds) => {
-                self.print_bounds("", &bounds[..])?;
+            ast::TyKind::TraitObject(ref bounds, syntax) => {
+                let prefix = if syntax == ast::TraitObjectSyntax::Dyn { "dyn " } else { "" };
+                self.print_bounds(prefix, &bounds[..])?;
            }
            ast::TyKind::ImplTrait(ref bounds) => {
                self.print_bounds("impl ", &bounds[..])?;