From 51ce121592f85a22b8f8f1905525efaa89d07d20 Mon Sep 17 00:00:00 2001
From: Clar Fon <them@lightdark.xyz>
Date: Fri, 9 Aug 2019 14:58:09 -0400
Subject: [PATCH] Implement Clone, Display for ascii::EscapeDefault
---
src/libcore/ascii.rs | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/src/libcore/ascii.rs b/src/libcore/ascii.rs
index e6a6fdde54042..4087333e2cf6d 100644
--- a/src/libcore/ascii.rs
+++ b/src/libcore/ascii.rs
@@ -14,6 +14,7 @@
use crate::fmt;
use crate::ops::Range;
use crate::iter::FusedIterator;
+use crate::str::from_utf8_unchecked;
/// An iterator over the escaped version of a byte.
///
@@ -22,6 +23,7 @@ use crate::iter::FusedIterator;
///
/// [`escape_default`]: fn.escape_default.html
#[stable(feature = "rust1", since = "1.0.0")]
+#[derive(Clone)]
pub struct EscapeDefault {
range: Range<usize>,
data: [u8; 4],
@@ -130,6 +132,13 @@ impl ExactSizeIterator for EscapeDefault {}
#[stable(feature = "fused", since = "1.26.0")]
impl FusedIterator for EscapeDefault {}
+#[stable(feature = "ascii_escape_display", since = "1.39.0")]
+impl fmt::Display for EscapeDefault {
+ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+ f.write_str(unsafe { from_utf8_unchecked(&self.data[self.range.clone()]) })
+ }
+}
+
#[stable(feature = "std_debug", since = "1.16.0")]
impl fmt::Debug for EscapeDefault {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {