Struct LineIndex 

pub struct LineIndex { /* private fields */ }

Maps byte offsets to/from (line, column) and UTF-16 columns.

Lines and columns are 0-based. The core emits byte offsets; LSP/JS clients convert to UTF-16 via this (the documented position-encoding footgun — plans/01-ARCHITECTURE.md §4).

Implementations

impl LineIndex

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

Build a line index for text.

pub fn line_col(&self, offset: u32) -> LineCol

The (line, byte-column) of a byte offset (clamped to the end of input).

pub fn utf16_col(&self, text: &str, offset: u32) -> u32

The UTF-16 column of a byte offset on its line (LSP’s default encoding).

pub fn line_count(&self) -> u32

The number of lines.

Trait Implementations

impl Clone for LineIndex

fn clone(&self) -> LineIndex

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LineIndex

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

Formats the value using the given formatter.