auto merge of #13184 : alexcrichton/rust/priv-fields, r=brson

This is an implementation of a portion of [RFC #4](https://github.com/rust-lang/rfcs/blob/master/active/0004-private-fields.md). This PR makes named struct fields private by default (as opposed to inherited by default).

The only real meaty change is the first commit to `rustc`, all other commits are just fallout of that change.

Summary of changes made:

* Named fields are private by default *everywhere*
* The `priv` keyword is now default-deny on named fields (done in a "lint" pass in privacy)

Changes yet to be done (before the RFC is closed)

* Change tuple structs to have private fields by default
* Remove `priv` enum variants
* Make `priv` a reserved keyword

1 files changed, 5 insertions, 5 deletions

diff --git a/src/libsyntax/util/interner.rs b/src/libsyntax/util/interner.rs
index 969b9f81785..b7932da8738 100644
--- a/src/libsyntax/util/interner.rs
+++ b/src/libsyntax/util/interner.rs
@@ -23,8 +23,8 @@ use std::hash::Hash;
 use std::rc::Rc;
 
 pub struct Interner<T> {
-    priv map: RefCell<HashMap<T, Name>>,
-    priv vect: RefCell<Vec<T> >,
+    map: RefCell<HashMap<T, Name>>,
+    vect: RefCell<Vec<T> >,
 }
 
 // when traits can extend traits, we should extend index<Name,T> to get []
@@ -92,7 +92,7 @@ impl<T: TotalEq + Hash + Clone + 'static> Interner<T> {
 
 #[deriving(Clone, Eq, Hash, Ord)]
 pub struct RcStr {
-    priv string: Rc<~str>,
+    string: Rc<~str>,
 }
 
 impl TotalEq for RcStr {}
@@ -134,8 +134,8 @@ impl RcStr {
 // A StrInterner differs from Interner<String> in that it accepts
 // &str rather than RcStr, resulting in less allocation.
 pub struct StrInterner {
-    priv map: RefCell<HashMap<RcStr, Name>>,
-    priv vect: RefCell<Vec<RcStr> >,
+    map: RefCell<HashMap<RcStr, Name>>,
+    vect: RefCell<Vec<RcStr> >,
 }
 
 // when traits can extend traits, we should extend index<Name,T> to get []