Struct LineIndex 

pub struct LineIndex { /* private fields */ }

A precomputed map from byte offsets to line/column positions for one source string. Build it once with LineIndex::new, then query repeatedly.

Implementations

impl LineIndex

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

Build a line index for source, scanning its line breaks (\n, \r, and \r\n).

pub fn position(&self, offset: usize) -> LinePosition

Translate a byte offset into its 1-based line and column (clamped to the end of the source).

pub fn span(&self, span: Span) -> (LinePosition, LinePosition)

Translate a Span into its start and end LinePositions.

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.

impl Eq for LineIndex

impl PartialEq for LineIndex

fn eq(&self, other: &LineIndex) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for LineIndex