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Ensure Guard types impl Display & Debug

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Fixes #24372
This commit is contained in:
Chris MacNaughton 2017-06-22 12:01:22 +02:00
parent efdf55d048
commit 14df54989a
3 changed files with 35 additions and 0 deletions
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14
src/libcore/cell.rs
View File

@ -942,6 +942,13 @@ impl<'b, T: ?Sized> Ref<'b, T> {
#[unstable(feature = "coerce_unsized", issue = "27732")]
impl<'b, T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<Ref<'b, U>> for Ref<'b, T> {}
#[stable(feature = "std_guard_impls", since = "1.20")]
impl<'a, T: ?Sized + fmt::Display> fmt::Display for Ref<'a, T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
self.value.fmt(f)
}
}
impl<'b, T: ?Sized> RefMut<'b, T> {
/// Make a new `RefMut` for a component of the borrowed data, e.g. an enum
/// variant.
@ -1034,6 +1041,13 @@ impl<'b, T: ?Sized> DerefMut for RefMut<'b, T> {
#[unstable(feature = "coerce_unsized", issue = "27732")]
impl<'b, T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<RefMut<'b, U>> for RefMut<'b, T> {}
#[stable(feature = "std_guard_impls", since = "1.20")]
impl<'a, T: ?Sized + fmt::Display> fmt::Display for RefMut<'a, T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
self.value.fmt(f)
}
}
/// The core primitive for interior mutability in Rust.
///
/// `UnsafeCell<T>` is a type that wraps some `T` and indicates unsafe interior operations on the

7
src/libstd/sync/mutex.rs
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@ -440,6 +440,13 @@ impl<'a, T: ?Sized + fmt::Debug> fmt::Debug for MutexGuard<'a, T> {
}
}
#[stable(feature = "std_guard_impls", since = "1.20")]
impl<'a, T: ?Sized + fmt::Display> fmt::Display for MutexGuard<'a, T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
(**self).fmt(f)
}
}
pub fn guard_lock<'a, T: ?Sized>(guard: &MutexGuard<'a, T>) -> &'a sys::Mutex {
&guard.__lock.inner
}

14
src/libstd/sync/rwlock.rs
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@ -370,6 +370,13 @@ impl<'a, T: fmt::Debug> fmt::Debug for RwLockReadGuard<'a, T> {
}
}
#[stable(feature = "std_guard_impls", since = "1.20")]
impl<'a, T: ?Sized + fmt::Display> fmt::Display for RwLockReadGuard<'a, T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
(**self).fmt(f)
}
}
#[stable(feature = "std_debug", since = "1.16.0")]
impl<'a, T: fmt::Debug> fmt::Debug for RwLockWriteGuard<'a, T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
@ -379,6 +386,13 @@ impl<'a, T: fmt::Debug> fmt::Debug for RwLockWriteGuard<'a, T> {
}
}
#[stable(feature = "std_guard_impls", since = "1.20")]
impl<'a, T: ?Sized + fmt::Display> fmt::Display for RwLockWriteGuard<'a, T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
(**self).fmt(f)
}
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<'rwlock, T: ?Sized> Deref for RwLockReadGuard<'rwlock, T> {
type Target = T;