auto merge of #10634 : LeoTestard/rust/rc-eq, r=cmr

This commit is contained in:
bors 2013-11-24 08:42:35 -08:00
commit 01b5381703

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@ -22,6 +22,7 @@ use ops::Drop;
use kinds::{Freeze, Send};
use clone::{Clone, DeepClone};
use cell::RefCell;
use cmp::{Eq, TotalEq, Ord, TotalOrd, Ordering};
struct RcBox<T> {
value: T,
@ -80,6 +81,60 @@ impl<T> Rc<T> {
pub fn borrow<'r>(&'r self) -> &'r T {
unsafe { &(*self.ptr).value }
}
/// Determine if two reference-counted pointers point to the same object
#[inline]
pub fn ptr_eq(&self, other: &Rc<T>) -> bool {
self.ptr == other.ptr
}
}
impl<T: Eq> Eq for Rc<T> {
#[inline]
fn eq(&self, other: &Rc<T>) -> bool {
unsafe { (*self.ptr).value == (*other.ptr).value }
}
#[inline]
fn ne(&self, other: &Rc<T>) -> bool {
unsafe { (*self.ptr).value != (*other.ptr).value }
}
}
impl<T: TotalEq> TotalEq for Rc<T> {
#[inline]
fn equals(&self, other: &Rc<T>) -> bool {
unsafe { (*self.ptr).value.equals(&(*other.ptr).value) }
}
}
impl<T: Ord> Ord for Rc<T> {
#[inline]
fn lt(&self, other: &Rc<T>) -> bool {
unsafe { (*self.ptr).value < (*other.ptr).value }
}
#[inline]
fn le(&self, other: &Rc<T>) -> bool {
unsafe { (*self.ptr).value <= (*other.ptr).value }
}
#[inline]
fn ge(&self, other: &Rc<T>) -> bool {
unsafe { (*self.ptr).value >= (*other.ptr).value }
}
#[inline]
fn gt(&self, other: &Rc<T>) -> bool {
unsafe { (*self.ptr).value > (*other.ptr).value }
}
}
impl<T: TotalOrd> TotalOrd for Rc<T> {
#[inline]
fn cmp(&self, other: &Rc<T>) -> Ordering {
unsafe { (*self.ptr).value.cmp(&(*other.ptr).value) }
}
}
impl<T> Clone for Rc<T> {