Avoid heap allocation when splitting an existing chunk

2021-05-15 10:08:01 +02:00
parent 243b66a91d
commit 1190a87a05
1 changed files with 3 additions and 1 deletions
@@ -56,7 +56,9 @@ impl Rope {
                    if last_chunk.0.len() + first_new_chunk_ref.0.len() <= 2 * CHUNK_BASE {
                        last_chunk.0.push_str(&first_new_chunk.take().unwrap().0);
                    } else {
-                        let text = [last_chunk.0, first_new_chunk_ref.0].concat();
+                        let mut text = ArrayString::<[_; 4 * CHUNK_BASE]>::new();
+                        text.push_str(&last_chunk.0);
+                        text.push_str(&first_new_chunk_ref.0);
                        let mut midpoint = text.len() / 2;
                        while !text.is_char_boundary(midpoint) {
                            midpoint += 1;