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Merge remote-tracking branch 'nrc/sized-2' into rollup

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Conflicts:
	src/liballoc/boxed.rs
	src/libcollections/btree/map.rs
	src/libcollections/slice.rs
	src/libcore/borrow.rs
	src/libcore/cmp.rs
	src/libcore/ops.rs
	src/libstd/c_str.rs
	src/libstd/collections/hash/map.rs
	src/libsyntax/parse/obsolete.rs
	src/test/compile-fail/unboxed-closure-sugar-default.rs
	src/test/compile-fail/unboxed-closure-sugar-equiv.rs
	src/test/compile-fail/unboxed-closure-sugar-lifetime-elision.rs
	src/test/compile-fail/unboxed-closure-sugar-region.rs
	src/test/compile-fail/unsized3.rs
	src/test/run-pass/associated-types-conditional-dispatch.rs
This commit is contained in:
Alex Crichton
2015-01-05 18:55:41 -08:00
parent afbce050ca 8f3a424322
commit 384e218789
64 changed files with 251 additions and 245 deletions
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38
src/libcore/borrow.rs
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@@ -54,39 +54,39 @@ use self::Cow::*;
/// A trait for borrowing data.
#[old_orphan_check]
pub trait BorrowFrom<Sized? Owned> {
pub trait BorrowFrom<Owned: ?Sized> {
/// Immutably borrow from an owned value.
fn borrow_from(owned: &Owned) -> &Self;
}
/// A trait for mutably borrowing data.
#[old_orphan_check]
pub trait BorrowFromMut<Sized? Owned> : BorrowFrom<Owned> {
pub trait BorrowFromMut<Owned: ?Sized> : BorrowFrom<Owned> {
/// Mutably borrow from an owned value.
fn borrow_from_mut(owned: &mut Owned) -> &mut Self;
}
impl<Sized? T> BorrowFrom<T> for T {
impl<T: ?Sized> BorrowFrom<T> for T {
fn borrow_from(owned: &T) -> &T { owned }
}
impl<Sized? T> BorrowFromMut<T> for T {
impl<T: ?Sized> BorrowFromMut<T> for T {
fn borrow_from_mut(owned: &mut T) -> &mut T { owned }
}
impl<'a, Sized? T> BorrowFrom<&'a T> for T {
impl<'a, T: ?Sized> BorrowFrom<&'a T> for T {
fn borrow_from<'b>(owned: &'b &'a T) -> &'b T { &**owned }
}
impl<'a, Sized? T> BorrowFrom<&'a mut T> for T {
impl<'a, T: ?Sized> BorrowFrom<&'a mut T> for T {
fn borrow_from<'b>(owned: &'b &'a mut T) -> &'b T { &**owned }
}
impl<'a, Sized? T> BorrowFromMut<&'a mut T> for T {
impl<'a, T: ?Sized> BorrowFromMut<&'a mut T> for T {
fn borrow_from_mut<'b>(owned: &'b mut &'a mut T) -> &'b mut T { &mut **owned }
}
impl<'a, T, Sized? B> BorrowFrom<Cow<'a, T, B>> for B where B: ToOwned<T> {
impl<'a, T, B: ?Sized> BorrowFrom<Cow<'a, T, B>> for B where B: ToOwned<T> {
fn borrow_from<'b>(owned: &'b Cow<'a, T, B>) -> &'b B {
&**owned
}
@@ -94,12 +94,12 @@ impl<'a, T, Sized? B> BorrowFrom<Cow<'a, T, B>> for B where B: ToOwned<T> {
/// Trait for moving into a `Cow`
#[old_orphan_check]
pub trait IntoCow<'a, T, Sized? B> {
pub trait IntoCow<'a, T, B: ?Sized> {
/// Moves `self` into `Cow`
fn into_cow(self) -> Cow<'a, T, B>;
}
impl<'a, T, Sized? B> IntoCow<'a, T, B> for Cow<'a, T, B> where B: ToOwned<T> {
impl<'a, T, B: ?Sized> IntoCow<'a, T, B> for Cow<'a, T, B> where B: ToOwned<T> {
fn into_cow(self) -> Cow<'a, T, B> {
self
}
@@ -133,7 +133,7 @@ impl<T> ToOwned<T> for T where T: Clone {
/// }
/// }
/// ```
pub enum Cow<'a, T, Sized? B: 'a> where B: ToOwned<T> {
pub enum Cow<'a, T, B: ?Sized + 'a> where B: ToOwned<T> {
/// Borrowed data.
Borrowed(&'a B),
@@ -142,7 +142,7 @@ pub enum Cow<'a, T, Sized? B: 'a> where B: ToOwned<T> {
}
#[stable]
impl<'a, T, Sized? B> Clone for Cow<'a, T, B> where B: ToOwned<T> {
impl<'a, T, B: ?Sized> Clone for Cow<'a, T, B> where B: ToOwned<T> {
fn clone(&self) -> Cow<'a, T, B> {
match *self {
Borrowed(b) => Borrowed(b),
@@ -154,7 +154,7 @@ impl<'a, T, Sized? B> Clone for Cow<'a, T, B> where B: ToOwned<T> {
}
}
impl<'a, T, Sized? B> Cow<'a, T, B> where B: ToOwned<T> {
impl<'a, T, B: ?Sized> Cow<'a, T, B> where B: ToOwned<T> {
/// Acquire a mutable reference to the owned form of the data.
///
/// Copies the data if it is not already owned.
@@ -196,7 +196,7 @@ impl<'a, T, Sized? B> Cow<'a, T, B> where B: ToOwned<T> {
}
#[stable]
impl<'a, T, Sized? B> Deref for Cow<'a, T, B> where B: ToOwned<T> {
impl<'a, T, B: ?Sized> Deref for Cow<'a, T, B> where B: ToOwned<T> {
type Target = B;
fn deref(&self) -> &B {
@@ -208,10 +208,10 @@ impl<'a, T, Sized? B> Deref for Cow<'a, T, B> where B: ToOwned<T> {
}
#[stable]
impl<'a, T, Sized? B> Eq for Cow<'a, T, B> where B: Eq + ToOwned<T> {}
impl<'a, T, B: ?Sized> Eq for Cow<'a, T, B> where B: Eq + ToOwned<T> {}
#[stable]
impl<'a, T, Sized? B> Ord for Cow<'a, T, B> where B: Ord + ToOwned<T> {
impl<'a, T, B: ?Sized> Ord for Cow<'a, T, B> where B: Ord + ToOwned<T> {
#[inline]
fn cmp(&self, other: &Cow<'a, T, B>) -> Ordering {
Ord::cmp(&**self, &**other)
@@ -219,7 +219,7 @@ impl<'a, T, Sized? B> Ord for Cow<'a, T, B> where B: Ord + ToOwned<T> {
}
#[stable]
impl<'a, 'b, T, U, Sized? B, Sized? C> PartialEq<Cow<'b, U, C>> for Cow<'a, T, B> where
impl<'a, 'b, T, U, B: ?Sized, C: ?Sized> PartialEq<Cow<'b, U, C>> for Cow<'a, T, B> where
B: PartialEq<C> + ToOwned<T>,
C: ToOwned<U>,
{
@@ -230,14 +230,14 @@ impl<'a, 'b, T, U, Sized? B, Sized? C> PartialEq<Cow<'b, U, C>> for Cow<'a, T, B
}
#[stable]
impl<'a, T, Sized? B> PartialOrd for Cow<'a, T, B> where B: PartialOrd + ToOwned<T> {
impl<'a, T, B: ?Sized> PartialOrd for Cow<'a, T, B> where B: PartialOrd + ToOwned<T> {
#[inline]
fn partial_cmp(&self, other: &Cow<'a, T, B>) -> Option<Ordering> {
PartialOrd::partial_cmp(&**self, &**other)
}
}
impl<'a, T, Sized? B> fmt::Show for Cow<'a, T, B> where B: fmt::Show + ToOwned<T>, T: fmt::Show {
impl<'a, T, B: ?Sized> fmt::Show for Cow<'a, T, B> where B: fmt::Show + ToOwned<T>, T: fmt::Show {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
Borrowed(ref b) => fmt::Show::fmt(b, f),