add from_bytes

Author: yt2b

common/src/format.rs

@@ -600,7 +600,7 @@ impl FormatSpec {
         let sign_prefix = format!("{}{}", sign_str, prefix);
         let magnitude_str = self.add_magnitude_separators(raw_magnitude_str?, &sign_prefix);
         self.format_sign_and_align(
-            unsafe { &BorrowedStr::from_ascii_unchecked(magnitude_str.as_bytes()) },
+            &BorrowedStr::from_bytes(magnitude_str.as_bytes()),
             &sign_prefix,
             FormatAlign::Right,
         )

common/src/str.rs

@@ -80,6 +80,20 @@ impl<'a> BorrowedStr<'a> {
         }
     }
 
+    #[inline]
+    pub fn from_bytes(s: &'a [u8]) -> Self {
+        let k = if s.is_ascii() {
+            PyStrKind::Ascii.new_data()
+        } else {
+            PyStrKind::Utf8.new_data()
+        };
+        Self {
+            bytes: s,
+            kind: k,
+            hash: PyAtomic::<PyHash>::new(0),
+        }
+    }
+
     #[inline]
     pub fn as_str(&self) -> &str {
         unsafe {