Merge pull request #108 from wada314/master

Add Borrow and BorrowMut impls for Vec and String

src/collections/string.rs

@@ -62,6 +62,7 @@
 use crate::collections::str::lossy;
 use crate::collections::vec::Vec;
 use crate::Bump;
+use core::borrow::{Borrow, BorrowMut};
 use core::char::decode_utf16;
 use core::fmt;
 use core::hash;
@@ -2079,6 +2080,20 @@ impl<'bump> fmt::Write for String<'bump> {
  }
 }
 
+impl<'bump> Borrow<str> for String<'bump> {
+ #[inline]
+ fn borrow(&self) -> &str {
+ &self[..]
+ }
+}
+
+impl<'bump> BorrowMut<str> for String<'bump> {
+ #[inline]
+ fn borrow_mut(&mut self) -> &mut str {
+ &mut self[..]
+ }
+}
+
 /// A draining iterator for `String`.
 ///
 /// This struct is created by the [`drain`] method on [`String`]. See its

src/collections/vec.rs

@@ -86,6 +86,7 @@
 use super::raw_vec::RawVec;
 use crate::collections::CollectionAllocErr;
 use crate::Bump;
+use core::borrow::{Borrow, BorrowMut};
 use core::cmp::Ordering;
 use core::fmt;
 use core::hash::{self, Hash};
@@ -2058,6 +2059,20 @@ impl<'bump, T: 'bump> From<Vec<'bump, T>> for crate::boxed::Box<'bump, [T]> {
  }
 }
 
+impl<'bump, T: 'bump> Borrow<[T]> for Vec<'bump, T> {
+ #[inline]
+ fn borrow(&self) -> &[T] {
+ &self[..]
+ }
+}
+
+impl<'bump, T: 'bump> BorrowMut<[T]> for Vec<'bump, T> {
+ #[inline]
+ fn borrow_mut(&mut self) -> &mut [T] {
+ &mut self[..]
+ }
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // Clone-on-write
 ////////////////////////////////////////////////////////////////////////////////