diff options
Diffstat (limited to 'helix-core/src/transaction.rs')
| -rw-r--r-- | helix-core/src/transaction.rs | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/helix-core/src/transaction.rs b/helix-core/src/transaction.rs index 048839b3..e20e550f 100644 --- a/helix-core/src/transaction.rs +++ b/helix-core/src/transaction.rs @@ -473,11 +473,13 @@ impl Transaction { /// Generate a transaction from a set of changes. pub fn change<I>(doc: &Rope, changes: I) -> Self where - I: IntoIterator<Item = Change> + ExactSizeIterator, + I: IntoIterator<Item = Change> + Iterator, { let len = doc.len_chars(); - let mut changeset = ChangeSet::with_capacity(2 * changes.len() + 1); // rough estimate + let (lower, upper) = changes.size_hint(); + let size = upper.unwrap_or(lower); + let mut changeset = ChangeSet::with_capacity(2 * size + 1); // rough estimate // TODO: verify ranges are ordered and not overlapping or change will panic. |