From d19c929018fd241fcfc8377708efb20ec6949a77 Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Wed, 1 Mar 2017 10:37:30 -0800
Subject: [PATCH] Expand object-safe impls slightly
Add `?Sized` bounds to work for DST objects and also add impls for `Box` as well
as `&mut`
---
src/buf/mod.rs | 32 ++++++++++++++++++++++++++++++--
1 file changed, 30 insertions(+), 2 deletions(-)
diff --git a/src/buf/mod.rs b/src/buf/mod.rs
index cfff1e8..93bbcc6 100644
--- a/src/buf/mod.rs
+++ b/src/buf/mod.rs
@@ -42,7 +42,7 @@ pub use self::writer::Writer;
*
*/
-impl<'a, T: Buf> Buf for &'a mut T {
+impl<'a, T: Buf + ?Sized> Buf for &'a mut T {
fn remaining(&self) -> usize {
(**self).remaining()
}
@@ -56,7 +56,35 @@ impl<'a, T: Buf> Buf for &'a mut T {
}
}
-impl<'a, T: BufMut> BufMut for &'a mut T {
+impl<'a, T: BufMut + ?Sized> BufMut for &'a mut T {
+ fn remaining_mut(&self) -> usize {
+ (**self).remaining_mut()
+ }
+
+ unsafe fn bytes_mut(&mut self) -> &mut [u8] {
+ (**self).bytes_mut()
+ }
+
+ unsafe fn advance_mut(&mut self, cnt: usize) {
+ (**self).advance_mut(cnt)
+ }
+}
+
+impl<T: Buf + ?Sized> Buf for Box<T> {
+ fn remaining(&self) -> usize {
+ (**self).remaining()
+ }
+
+ fn bytes(&self) -> &[u8] {
+ (**self).bytes()
+ }
+
+ fn advance(&mut self, cnt: usize) {
+ (**self).advance(cnt)
+ }
+}
+
+impl<T: BufMut + ?Sized> BufMut for Box<T> {
fn remaining_mut(&self) -> usize {
(**self).remaining_mut()
}
--
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