Use let-else syntax to reduce indentation in fuzz

dtolnay · dtolnay · commit b539d5a11c86 · 2023-03-26T18:53:46.000-07:00
diff --git a/fuzz/fuzz_targets/parse_token_stream.rs b/fuzz/fuzz_targets/parse_token_stream.rs
@@ -59,9 +59,7 @@ fn main() {
 }
 
 fn do_fuzz(bytes: &[u8]) {
-    if bytes.len() < 200 {
-        if let Ok(string) = str::from_utf8(bytes) {
-            _ = string.parse::<proc_macro2::TokenStream>();
-        }
-    }
+    let ..=199 = bytes.len() else { return };
+    let Ok(string) = str::from_utf8(bytes) else { return };
+    let _ = string.parse::<proc_macro2::TokenStream>();
 }

Original file line number	Diff line number	Diff line change
`@@ -59,9 +59,7 @@ fn main() {`
`59`	`59`	`}`
`60`	`60`
`61`	`61`	`fn do_fuzz(bytes: &[u8]) {`
`62`		`- if bytes.len() < 200 {`
`63`		`- if let Ok(string) = str::from_utf8(bytes) {`
`64`		`- _ = string.parse::<proc_macro2::TokenStream>();`
`65`		`- }`
`66`		`- }`
	`62`	`+ let ..=199 = bytes.len() else { return };`
	`63`	`+ let Ok(string) = str::from_utf8(bytes) else { return };`
	`64`	`+ let _ = string.parse::<proc_macro2::TokenStream>();`
`67`	`65`	`}`