Use as_deref in compiler (but only where it makes sense)

2022-11-16 21:58:58 +00:00
parent e702534763
commit 94470f4efd
27 changed files with 45 additions and 63 deletions
--- a/compiler/rustc_parse/src/parser/diagnostics.rs
+++ b/compiler/rustc_parse/src/parser/diagnostics.rs
@@ -2562,7 +2562,7 @@ impl<'a> Parser<'a> {
            if let [a, b] = segments {
                let (a_span, b_span) = (a.span(), b.span());
                let between_span = a_span.shrink_to_hi().to(b_span.shrink_to_lo());
-                if self.span_to_snippet(between_span).as_ref().map(|a| &a[..]) == Ok(":: ") {
+                if self.span_to_snippet(between_span).as_deref() == Ok(":: ") {
                    return Err(DoubleColonInBound {
                        span: path.span.shrink_to_hi(),
                        between: between_span,