Struct LineIndex 

pub struct LineIndex { /* private fields */ }

The start of every line in a text.

Implementations

impl LineIndex

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

Index text. \n ends a line, and so does \r\n, whose \r is part of the line’s end.

pub fn len(&self) -> u32

The text’s length in bytes.

pub fn is_empty(&self) -> bool

Whether the text is empty.

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

The zero-based line and UTF-16 column of byte offset. An offset past the end is the end of the text.

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

The byte offset of zero-based line and UTF-16 column.

Out-of-range positions clamp:

• a column past the line’s end goes to the line’s end, before its \r\n or \n;
• a line past the last goes to the end of the text;
• a column inside a surrogate pair goes to its character’s start.

Trait Implementations

impl Clone for LineIndex

fn clone(&self) -> Self

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.