Struct LineStartsCache 

pub struct LineStartsCache { /* private fields */ }

Caches byte offsets for line starts to speed up coordinate conversion.

Implementations

impl LineStartsCache

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

Builds a cache from UTF-8 source text.

pub fn new_rope(rope: &Rope) -> Self

Builds a cache from a Rope buffer.

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

Converts a byte offset in text to (line, column_utf16).

pub fn position_to_offset(&self, text: &str, line: u32, character: u32) -> usize

Converts (line, column_utf16) into a byte offset in text.

pub fn offset_to_position_rope(&self, rope: &Rope, offset: usize) -> (u32, u32)

Converts a byte offset in rope to (line, column_utf16).

pub fn position_to_offset_rope( &self, rope: &Rope, line: u32, character: u32, ) -> usize

Converts (line, column_utf16) into a byte offset in rope.

Trait Implementations

impl Clone for LineStartsCache

fn clone(&self) -> LineStartsCache

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LineStartsCache

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

Formats the value using the given formatter.