Function replacement_for

atomic-core/src/merge/three_way.rs:287–301

For a given base index, return the replacement content (if any). `None` means the token was deleted rather than replaced.

(ops: &[EditOp], base_idx: usize)

/// For a given base index, return the replacement content (if any).
/// `None` means the token was deleted rather than replaced.
fn replacement_for(ops: &[EditOp], base_idx: usize) -> Option<Vec<u8>> {
    for op in ops {
        match op {
            EditOp::Replace(idx, content) if *idx == base_idx => {
                return Some(content.clone());
            }
            EditOp::Delete(idx) if *idx == base_idx => {
                return None;
            }
            _ => {}
        }
    }
    // Not modified — return the sentinel "keep".
    Some(Vec::new())
}

/// Collect all insertions keyed by the base index they follow.
fn insert_positions(ops: &[EditOp]) -> HashMap<usize, Vec<Vec<u8>>> {