Struct History 

pub struct History { /* private fields */ }

Change history log.

Records all changes made to a buffer in chronological order. Unlike UndoTree, this is a simple linear log without branching.

Use Cases

• Debugging: See what changes were made and when
• Auditing: Track modification history
• Collaboration: Synchronize changes between editors

Memory Management

The history has a configurable maximum number of entries. When exceeded, the oldest entries are removed.

Implementations

impl History

pub const DEFAULT_MAX_ENTRIES: usize = 10000

Default maximum number of entries.

pub fn new() -> Self

Create a new empty history.

pub fn with_max_entries(max_entries: usize) -> Self

Create a new history with custom maximum entries.

pub fn record(&mut self, edits: Vec<Edit>)

Record a new change.

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

Get all entries in chronological order.

pub fn last(&self) -> Option<&HistoryEntry>

Get the most recent entry.

pub fn get(&self, index: usize) -> Option<&HistoryEntry>

Get an entry by index.

pub fn clear(&mut self)

Clear all history.

pub const fn len(&self) -> usize

Get the number of entries.

pub const fn is_empty(&self) -> bool

Check if history is empty.

pub const fn max_entries(&self) -> usize

Get the maximum entries limit.

pub fn set_max_entries(&mut self, max: usize)

Set the maximum entries limit.

pub const fn seq_counter(&self) -> u64

Get the current sequential counter value.

pub fn since(&self, seq_num: u64) -> Vec<&HistoryEntry>

Get entries since a given sequence number.

pub fn between(&self, start: Instant, end: Instant) -> Vec<&HistoryEntry>

Get entries within a time range.

Trait Implementations

impl Debug for History

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

Formats the value using the given formatter.

impl Default for History

fn default() -> Self

Returns the “default value” for a type.