Struct IndexMap 

pub struct IndexMap { /* private fields */ }

The map between the two index spaces of TextPage.

A table of segments, not an index: it converts a character index into a text offset and back, so a caller never has to guess which of the two sequences a number counts in.

Implementations

impl IndexMap

pub fn segments(&self) -> &[CharSegment]

The segments, oldest first.

pub fn text_len(&self) -> usize

How many characters the text holds.

pub fn char_index(&self, text_index: TextIndex) -> Option<CharIndex>

The character index a text offset names.

let map = IndexMap::default();
assert_eq!(map.char_index(TextIndex::new(0)), None);

pub fn text_index(&self, char_index: CharIndex) -> Option<TextIndex>

The text offset a character index names, or None for a character the text does not hold.

pub fn text_index_at_or_after(&self, char_index: CharIndex) -> Option<TextIndex>

The text offset a character index names, rounded forward to the next character the text does hold.

What a start bound wants: a request that begins on a stripped character should begin at the next real one rather than failing.

pub fn text_index_end(&self, char_index: CharIndex) -> TextIndex

The text offset one past the last text character at or before char_index, which is what an end bound wants.

Trait Implementations

impl Clone for IndexMap

fn clone(&self) -> IndexMap

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IndexMap

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

Formats the value using the given formatter.

impl Default for IndexMap

fn default() -> IndexMap

Returns the “default value” for a type.

impl Eq for IndexMap

impl PartialEq for IndexMap

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for IndexMap