Inline Bytes::next and Bytes::size_hint.

nnethercote · nnethercote · commit 4d6810844e1b · 2023-10-16T08:08:32.000+11:00
This greatly increases its speed.
diff --git a/library/std/src/io/mod.rs b/library/std/src/io/mod.rs
@@ -2777,6 +2777,7 @@ pub struct Bytes<R> {
 impl<R: Read> Iterator for Bytes<R> {
     type Item = Result<u8>;
 
+    #[inline]
     fn next(&mut self) -> Option<Result<u8>> {
         let mut byte = 0;
         loop {
@@ -2789,6 +2790,7 @@ impl<R: Read> Iterator for Bytes<R> {
         }
     }
 
+    #[inline]
     fn size_hint(&self) -> (usize, Option<usize>) {
         SizeHint::size_hint(&self.inner)
     }

Original file line number	Diff line number	Diff line change
`@@ -2777,6 +2777,7 @@ pub struct Bytes<R> {`
`2777`	`2777`	`impl<R: Read> Iterator for Bytes<R> {`
`2778`	`2778`	`type Item = Result<u8>;`
`2779`	`2779`
	`2780`	`+ #[inline]`
`2780`	`2781`	`fn next(&mut self) -> Option<Result<u8>> {`
`2781`	`2782`	`let mut byte = 0;`
`2782`	`2783`	`loop {`
`@@ -2789,6 +2790,7 @@ impl<R: Read> Iterator for Bytes<R> {`
`2789`	`2790`	`}`
`2790`	`2791`	`}`
`2791`	`2792`
	`2793`	`+ #[inline]`
`2792`	`2794`	`fn size_hint(&self) -> (usize, Option<usize>) {`
`2793`	`2795`	`SizeHint::size_hint(&self.inner)`
`2794`	`2796`	`}`