Struct TextPos 

pub struct TextPos {
    pub byte: usize,
    pub grapheme: usize,
}

Position inside a TextBuffer; carries both byte (for slicing) and grapheme (for cursor display) axes.

Fields

byte: usize

Byte offset into the buffer.

grapheme: usize

Grapheme-cluster offset, computed from byte against the live buffer (use TextPos::from_byte).

Implementations

impl TextPos

pub const ZERO: Self

Origin.

pub fn from_byte(text: &str, byte: usize) -> Self

Build a position from a byte offset into text. Clamps to the nearest char boundary, then counts graphemes up to that boundary.

pub fn from_buffer_byte(buf: &TextBuffer, byte: usize) -> Self

Build a position from a byte offset into a TextBuffer.

Trait Implementations

impl Clone for TextPos

fn clone(&self) -> TextPos

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TextPos

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

Formats the value using the given formatter.

impl Default for TextPos

fn default() -> TextPos

Returns the “default value” for a type.

impl From<&TextBuffer> for TextPos

fn from(buf: &TextBuffer) -> Self

End-of-buffer.

impl Hash for TextPos

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for TextPos

fn eq(&self, other: &TextPos) -> 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 Copy for TextPos

impl Eq for TextPos

impl StructuralPartialEq for TextPos