Shrink unsafe block

cactter · cactter · commit d23eb49ec233 · 2022-07-22T08:27:51.000+08:00
diff --git a/src/macros.rs b/src/macros.rs
@@ -157,22 +157,22 @@ pub fn _cssparser_internal_to_lowercase<'a>(
         input: &'a str,
         first_uppercase: usize,
     ) -> &'a str {
-        unsafe {
+        
             // This cast doesn't change the pointer's validity
             // since `u8` has the same layout as `MaybeUninit<u8>`:
-            let input_bytes = &*(input.as_bytes() as *const [u8] as *const [MaybeUninit<u8>]);
+            let input_bytes = unsafe { &*(input.as_bytes() as *const [u8] as *const [MaybeUninit<u8>]) };
 
             buffer.copy_from_slice(&*input_bytes);
 
             // Same as above re layout, plus these bytes have been initialized:
-            let buffer = &mut *(buffer as *mut [MaybeUninit<u8>] as *mut [u8]);
+            let buffer = unsafe { &mut *(buffer as *mut [MaybeUninit<u8>] as *mut [u8]) };
 
             buffer[first_uppercase..].make_ascii_lowercase();
             // `buffer` was initialized to a copy of `input`
             // (which is `&str` so well-formed UTF-8)
             // then ASCII-lowercased (which preserves UTF-8 well-formedness):
-            ::std::str::from_utf8_unchecked(buffer)
-        }
+            unsafe { ::std::str::from_utf8_unchecked(buffer) }
+        
     }
 
     Some(
