Struct MergeList 

pub struct MergeList { /* private fields */ }

A list of merge entries for a branch node’s children.

The merge list is used to track:

• Which children are present and in what order
• Which children have been moved within the list
• Which positions are “locked” (cannot be freely reordered)
• Hangon nodes at each position

Implementations

impl MergeList

pub fn new(parent: Option<NodeRef>) -> Self

Creates a new empty merge list.

pub fn from_branch(parent: &NodeRef, edit_log: &mut EditLog) -> Self

Creates a merge list from a branch node’s children.

pub fn add_entry(&mut self, entry: MergeEntry)

Adds an entry to the list.

pub fn add_node(&mut self, node: NodeRef)

Adds a node as an entry.

pub fn add_hangon(&mut self, node: NodeRef)

Adds a hangon to the current entry.

pub fn set_moved(&mut self, moved: bool)

Sets the moved flag on the current entry.

pub fn lock_neighborhood(&mut self, left: usize, right: usize)

Locks entries around the current position.

pub fn lock_neighborhood_at(&mut self, pos: usize, left: usize, right: usize)

Locks entries around the given position.

pub fn entry_count(&self) -> usize

Returns the number of entries (including START and END).

pub fn entry(&self, ix: usize) -> Option<&MergeEntry>

Returns an entry by index.

pub fn entry_mut(&mut self, ix: usize) -> Option<&mut MergeEntry>

Returns a mutable entry by index.

pub fn entries(&self) -> &[MergeEntry]

Returns all entries.

pub fn remove_entry_at(&mut self, ix: usize)

Removes the entry at the given index.

pub fn move_hangons_to_predecessor(&mut self, ix: usize)

Moves hangons from entry at ix to its predecessor.

pub fn find_partner(&self, entry: &MergeEntry) -> Option<&MergeEntry>

Finds the index of the partner entry (by base match).

pub fn find_partner_index(&self, entry: Option<&MergeEntry>) -> Option<usize>

Finds the index of the partner entry.

pub fn match_in_list(&self, base: &NodeRef) -> Option<usize>

Finds the index of a base node in the list.

pub fn entry_parent(&self) -> Option<NodeRef>

Returns the entry parent.

pub fn is_end(&self, ix: usize) -> bool

Checks if the given index is the END marker.

Trait Implementations

impl Clone for MergeList

fn clone(&self) -> MergeList

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MergeList

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.