Struct Document 

pub struct Document { /* private fields */ }

An open document backed by a rope data structure for efficient incremental edits.

This is the primary representation for documents being actively edited in an LSP context, where frequent small edits need to be applied efficiently.

Implementations

impl Document

pub fn new(text: &str, language_id: String) -> Self

Create a new document from the full text content.

pub fn apply_edit(&mut self, start_byte: usize, end_byte: usize, new_text: &str)

Apply an incremental edit to the document.

start_byte and end_byte define the range to replace. If they are equal, this is an insertion. If new_text is empty, this is a deletion.

pub fn apply_edit_lc( &mut self, start_line: usize, start_col: usize, end_line: usize, end_col: usize, new_text: &str, )

Apply an edit using line/column (0-based) coordinates.

pub fn set_content(&mut self, text: &str)

Replace the entire content (full sync).

pub fn text(&self) -> String

Get the full text content as a String.

pub fn slice_bytes(&self, start: usize, end: usize) -> String

Get a slice of text by byte range.

pub fn line(&self, idx: usize) -> Option<String>

Get a specific line (0-indexed).

pub fn byte_to_line_col(&self, byte_offset: usize) -> (usize, usize)

Convert a byte offset to (line, column) (0-based).

pub fn line_col_to_byte(&self, line: usize, col: usize) -> usize

Convert (line, column) (0-based) to a byte offset.

pub fn line_count(&self) -> usize

Number of lines in the document.

pub fn len_bytes(&self) -> usize

Length in bytes.

pub fn len_chars(&self) -> usize

Length in characters.

pub fn is_empty(&self) -> bool

Whether the document is empty.

pub const fn version(&self) -> i32

The document version (increments on each edit).

pub fn language_id(&self) -> &str

The document’s language ID.

Trait Implementations

impl Clone for Document

fn clone(&self) -> Document

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Document

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

Formats the value using the given formatter.