Struct LineMap 

pub struct LineMap {
    pub line_starts: Vec<usize>,
}

A utility to find the line boundaries in a source string.

Fields

line_starts: Vec<usize>

Byte offsets of each line start

Implementations

impl LineMap

pub fn from_str(src: &str) -> Self

Build a LineMap from source text.

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

Returns the line number (1-based) for a byte offset.

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

Returns the column (1-based) for a byte offset.

pub fn line_count(&self) -> usize

Returns the total number of lines.