Remove seldom-used std::reference functions.

src/libextra/arc.rs

@@ -1,4 +1,4 @@
-// Copyright 2012-2013 The Rust Project Developers. See the COPYRIGHT
+// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
 // file at the top-level directory of this distribution and at
 // http://rust-lang.org/COPYRIGHT.
 //
@@ -47,7 +47,6 @@ use sync::{Mutex, RWLock};
 use std::cast;
 use std::sync::arc::UnsafeArc;
 use std::task;
-use std::reference;
 
 /// As sync::condvar, a mechanism for unlock-and-descheduling and signaling.
 pub struct Condvar<'a> {
@@ -465,7 +464,7 @@ impl<T:Freeze + Send> RWArc<T> {
             // of this cast is removing the mutability.)
             let new_data = data;
             // Downgrade ensured the token belonged to us. Just a sanity check.
-            assert!(reference::ref_eq(&(*state).data, new_data));
+            assert!((&(*state).data as *T as uint) == (new_data as *mut T as uint));
             // Produce new token
             RWReadMode {
                 data: new_data,

src/libextra/sync.rs

@@ -1,4 +1,4 @@
-// Copyright 2012-2013 The Rust Project Developers. See the COPYRIGHT
+// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
 // file at the top-level directory of this distribution and at
 // http://rust-lang.org/COPYRIGHT.
 //
@@ -18,7 +18,6 @@
  */
 
 
-use std::reference;
 use std::comm;
 use std::unstable::sync::Exclusive;
 use std::sync::arc::UnsafeArc;
@@ -634,7 +633,7 @@ impl RWLock {
     /// To be called inside of the write_downgrade block.
     pub fn downgrade<'a>(&self, token: RWLockWriteMode<'a>)
                          -> RWLockReadMode<'a> {
-        if !reference::ref_eq(self, token.lock) {
+        if !((self as *RWLock) == (token.lock as *RWLock)) {
             fail!("Can't downgrade() with a different rwlock's write_mode!");
         }
         unsafe {

src/libstd/lib.rs

@@ -123,7 +123,7 @@ pub mod send_str;
 pub mod ptr;
 pub mod owned;
 pub mod managed;
-pub mod reference;
+mod reference;
 pub mod rc;
 pub mod gc;
 

src/libstd/reference.rs

@@ -13,18 +13,6 @@
 #[cfg(not(test))]
 use prelude::*;
 
-/// Cast a region pointer - &T - to a uint.
-#[inline]
-pub fn to_uint<T>(thing: &T) -> uint {
-    thing as *T as uint
-}
-
-/// Determine if two borrowed pointers point to the same thing.
-#[inline]
-pub fn ref_eq<'a, 'b, T>(thing: &'a T, other: &'b T) -> bool {
-    (thing as *T) == (other as *T)
-}
-
 // Equality for region pointers
 #[cfg(not(test))]
 impl<'a, T: Eq> Eq for &'a T {
@@ -71,16 +59,3 @@ impl<'a, T: TotalEq> TotalEq for &'a T {
     fn equals(&self, other: & &'a T) -> bool { (**self).equals(*other) }
 }
 
-#[cfg(test)]
-mod tests {
-    use super::ref_eq;
-
-    #[test]
-    fn test_ref_eq() {
-        let x = 1;
-        let y = 1;
-
-        assert!(ref_eq(&x, &x));
-        assert!(!ref_eq(&x, &y));
-    }
-}

src/libstd/rt/task.rs

@@ -14,7 +14,6 @@
 //! to implement this.
 
 use any::AnyOwnExt;
-use reference;
 use cast;
 use cleanup;
 use clone::Clone;
@@ -287,7 +286,7 @@ impl Task {
 
 impl Drop for Task {
     fn drop(&mut self) {
-        rtdebug!("called drop for a task: {}", reference::to_uint(self));
+        rtdebug!("called drop for a task: {}", self as *mut Task as uint);
         rtassert!(self.destroyed);
     }
 }

src/test/run-pass/borrowck-borrow-from-expr-block.rs

@@ -10,7 +10,6 @@
 
 #[feature(managed_boxes)];
 
-use std::reference;
 use std::ptr;
 
 fn borrow(x: &int, f: |x: &int|) {
@@ -20,7 +19,7 @@ fn borrow(x: &int, f: |x: &int|) {
 fn test1(x: @~int) {
     borrow(&*(*x).clone(), |p| {
         let x_a = ptr::to_unsafe_ptr(&**x);
-        assert!((x_a as uint) != reference::to_uint(p));
+        assert!((x_a as uint) != (p as *int as uint));
         assert_eq!(unsafe{*x_a}, *p);
     })
 }

src/test/run-pass/cast-region-to-uint.rs

@@ -8,9 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use std::reference;
-
 pub fn main() {
     let x = 3;
-    info!("&x={:x}", reference::to_uint(&x));
+    info!("&x={:x}", (&x as *int as uint));
 }