diff options
| -rw-r--r-- | src/librustc_data_structures/indexed_set.rs | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/librustc_data_structures/indexed_set.rs b/src/librustc_data_structures/indexed_set.rs index 5d7139507b3..223e08de826 100644 --- a/src/librustc_data_structures/indexed_set.rs +++ b/src/librustc_data_structures/indexed_set.rs @@ -8,6 +8,7 @@ // option. This file may not be copied, modified, or distributed // except according to those terms. +use std::borrow::{Borrow, BorrowMut, ToOwned}; use std::fmt; use std::iter; use std::marker::PhantomData; @@ -73,6 +74,25 @@ pub struct IdxSet<T: Idx> { bits: [Word], } +impl<T: Idx> Borrow<IdxSet<T>> for IdxSetBuf<T> { + fn borrow(&self) -> &IdxSet<T> { + &*self + } +} + +impl<T: Idx> BorrowMut<IdxSet<T>> for IdxSetBuf<T> { + fn borrow_mut(&mut self) -> &mut IdxSet<T> { + &mut *self + } +} + +impl<T: Idx> ToOwned for IdxSet<T> { + type Owned = IdxSetBuf<T>; + fn to_owned(&self) -> Self::Owned { + IdxSet::to_owned(self) + } +} + impl<T: Idx> fmt::Debug for IdxSetBuf<T> { fn fmt(&self, w: &mut fmt::Formatter) -> fmt::Result { w.debug_list() |