Add `Crate` and `Restricted` variants to `ast::Visibility`

src/librustc_front/lowering.rs

@@ -1706,10 +1706,11 @@ pub fn lower_capture_clause(_lctx: &LoweringContext, c: CaptureBy) -> hir::Captu
     }
 }
 
-pub fn lower_visibility(_lctx: &LoweringContext, v: &Visibility) -> hir::Visibility {
+pub fn lower_visibility(lctx: &LoweringContext, v: &Visibility) -> hir::Visibility {
     match *v {
         Visibility::Public => hir::Public,
         Visibility::Inherited => hir::Inherited,
+        _ => panic!(lctx.diagnostic().fatal("pub(restricted) is not implemented yet!"))
     }
 }
 

src/libsyntax/ast.rs

@@ -1871,6 +1871,8 @@ pub struct PolyTraitRef {
 #[derive(Clone, PartialEq, Eq, RustcEncodable, RustcDecodable, Hash, Debug)]
 pub enum Visibility {
     Public,
+    Crate,
+    Restricted { path: P<Path>, id: NodeId },
     Inherited,
 }
 

src/libsyntax/fold.rs

@@ -288,6 +288,10 @@ pub trait Folder : Sized {
         noop_fold_where_predicate(where_predicate, self)
     }
 
+    fn fold_vis(&mut self, vis: Visibility) -> Visibility {
+        noop_fold_vis(vis, self)
+    }
+
     fn new_id(&mut self, i: NodeId) -> NodeId {
         i
     }
@@ -992,7 +996,7 @@ pub fn noop_fold_impl_item<T: Folder>(i: ImplItem, folder: &mut T)
         id: folder.new_id(i.id),
         ident: folder.fold_ident(i.ident),
         attrs: fold_attrs(i.attrs, folder),
-        vis: i.vis,
+        vis: folder.fold_vis(i.vis),
         defaultness: i.defaultness,
         node: match i.node  {
             ast::ImplItemKind::Const(ty, expr) => {
@@ -1082,7 +1086,7 @@ pub fn noop_fold_item_simple<T: Folder>(Item {id, ident, attrs, node, vis, span}
         ident: folder.fold_ident(ident),
         attrs: fold_attrs(attrs, folder),
         node: node,
-        vis: vis,
+        vis: folder.fold_vis(vis),
         span: folder.new_span(span)
     }
 }
@@ -1100,7 +1104,7 @@ pub fn noop_fold_foreign_item<T: Folder>(ni: ForeignItem, folder: &mut T) -> For
                 ForeignItemKind::Static(folder.fold_ty(t), m)
             }
         },
-        vis: ni.vis,
+        vis: folder.fold_vis(ni.vis),
         span: folder.new_span(ni.span)
     }
 }
@@ -1391,6 +1395,16 @@ pub fn noop_fold_stmt<T: Folder>(Spanned {node, span}: Stmt, folder: &mut T)
     }
 }
 
+pub fn noop_fold_vis<T: Folder>(vis: Visibility, folder: &mut T) -> Visibility {
+    match vis {
+        Visibility::Restricted { path, id } => Visibility::Restricted {
+            path: path.map(|path| folder.fold_path(path)),
+            id: folder.new_id(id)
+        },
+        _ => vis,
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use std::io;

src/libsyntax/parse/parser.rs

@@ -3842,7 +3842,7 @@ impl<'a> Parser<'a> {
                          attrs: Vec<Attribute> ) -> PResult<'a, StructField> {
         let lo = match pr {
             Visibility::Inherited => self.span.lo,
-            Visibility::Public => self.last_span.lo,
+            _ => self.last_span.lo,
         };
         let name = self.parse_ident()?;
         self.expect(&token::Colon)?;
@@ -4970,7 +4970,8 @@ impl<'a> Parser<'a> {
 
     fn complain_if_pub_macro(&mut self, visa: &Visibility, span: Span) {
         match *visa {
-            Visibility::Public => {
+            Visibility::Inherited => (),
+            _ => {
                 let is_macro_rules: bool = match self.token {
                     token::Ident(sid, _) => sid.name == intern("macro_rules"),
                     _ => false,
@@ -4988,7 +4989,6 @@ impl<'a> Parser<'a> {
                                      .emit();
                 }
             }
-            Visibility::Inherited => (),
         }
     }
 
@@ -6096,7 +6096,7 @@ impl<'a> Parser<'a> {
         // FAILURE TO PARSE ITEM
         match visibility {
             Visibility::Inherited => {}
-            Visibility::Public => {
+            _ => {
                 let last_span = self.last_span;
                 return Err(self.span_fatal(last_span, "unmatched visibility `pub`"));
             }

src/libsyntax/print/pprust.rs

@@ -435,6 +435,8 @@ pub fn mac_to_string(arg: &ast::Mac) -> String {
 pub fn visibility_qualified(vis: &ast::Visibility, s: &str) -> String {
     match *vis {
         ast::Visibility::Public => format!("pub {}", s),
+        ast::Visibility::Crate => format!("pub(crate) {}", s),
+        ast::Visibility::Restricted { ref path, .. } => format!("pub({}) {}", path, s),
         ast::Visibility::Inherited => s.to_string()
     }
 }
@@ -1384,6 +1386,9 @@ impl<'a> State<'a> {
     pub fn print_visibility(&mut self, vis: &ast::Visibility) -> io::Result<()> {
         match *vis {
             ast::Visibility::Public => self.word_nbsp("pub"),
+            ast::Visibility::Crate => self.word_nbsp("pub(crate)"),
+            ast::Visibility::Restricted { ref path, .. } =>
+                self.word_nbsp(&format!("pub({})", path)),
             ast::Visibility::Inherited => Ok(())
         }
     }

src/libsyntax/visit.rs

@@ -129,6 +129,9 @@ pub trait Visitor<'v> : Sized {
     fn visit_macro_def(&mut self, macro_def: &'v MacroDef) {
         walk_macro_def(self, macro_def)
     }
+    fn visit_vis(&mut self, vis: &'v Visibility) {
+        walk_vis(self, vis)
+    }
 }
 
 #[macro_export]
@@ -807,3 +810,10 @@ pub fn walk_arm<'v, V: Visitor<'v>>(visitor: &mut V, arm: &'v Arm) {
     visitor.visit_expr(&arm.body);
     walk_list!(visitor, visit_attribute, &arm.attrs);
 }
+
+pub fn walk_vis<'v, V: Visitor<'v>>(visitor: &mut V, vis: &'v Visibility) {
+    match *vis {
+        Visibility::Restricted { ref path, id } => visitor.visit_path(path, id),
+        _ => {}
+    }
+}