Struct LineIndex 

pub struct LineIndex { /* private fields */ }

Cached table of line-start byte offsets for one buffer.

Implementations

impl LineIndex

pub fn build(bytes: &[u8]) -> LineIndex

Build the index over bytes (the buffer contents, excluding the NUL terminator). A line starts at offset 0 and after each \n.

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

Return 1-based (line, col) for offset. col is 1-based byte distance from the line start.

pub fn line_ref<'a>(&self, bytes: &'a [u8], line: u32) -> &'a [u8]

Return the slice of bytes for 1-based line, including its trailing EOL if present. The final line may have no EOL.

pub fn line_count(&self) -> u32

Number of lines.

pub fn line_start(&self, line: u32) -> u32

Byte offset where 1-based line starts (= line_starts[line - 1]). Panics if line is out of range; callers should guard with line_count().