Merge pull request #317 from moenie99/patch-1

feat(lib): impl Clone for SpannedIter
maciejhirsz · Jun 24, 2023 · e2702f6 · e2702f6
2 parents b1406db + 80bf838
commit e2702f6
Showing 1 changed file with 13 additions and 0 deletions.
diff --git a/logos/src/lexer.rs b/logos/src/lexer.rs
@@ -227,6 +227,19 @@ pub struct SpannedIter<'source, Token: Logos<'source>> {
     lexer: Lexer<'source, Token>,
 }
 
+// deriving Clone doesn't infer the necessary `Token::Extras: Clone` bound
+impl<'source, Token> Clone for SpannedIter<'source, Token>
+where
+    Token: Logos<'source> + Clone,
+    Token::Extras: Clone,
+{
+    fn clone(&self) -> Self {
+        SpannedIter {
+            lexer: self.lexer.clone(),
+        }
+    }
+}
+
 impl<'source, Token> Iterator for SpannedIter<'source, Token>
 where
     Token: Logos<'source>,