Struct TextRange 

pub struct TextRange {
    pub start: TextIndex,
    pub end: TextIndex,
}

𝐓 A half-open range within a caller-defined text-oriented sequence.

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^{📍 text}

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TextRange covers the interval [start, end), including start and excluding end.

The underlying sequence may represent bytes, Unicode scalars, graphemes, layout symbols, or other caller-defined text units.

Empty ranges are valid and satisfy start == end.

Fields

start: TextIndex

The first index included in the range.

end: TextIndex

The first index excluded from the range.

Implementations

impl TextRange

pub const fn new(start: TextIndex, end: TextIndex) -> Self

Creates a new half-open range from text indices.

Panics

Panics if start > end.

pub const fn from_prim(start: TextUnit, end: TextUnit) -> Self

Creates a range from primitive indices.

Panics

Panics if start > end.

pub const fn from_start_len(start: TextIndex, len: TextUnit) -> Option<Self>

Creates some range from a start index and a length, or None on overflow.

pub const fn is_empty(self) -> bool

Returns true if the range is empty.

pub const fn len(self) -> TextUnit

Returns the range length in sequence units.

Trait Implementations

impl Clone for TextRange

fn clone(&self) -> TextRange

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl ConstInit for TextRange

const INIT: Self

Returns the compile-time “initial value” for a type.

impl Copy for TextRange

impl Debug for TextRange

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

Formats the value using the given formatter.

impl Eq for TextRange

impl Hash for TextRange

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 TextRange

fn eq(&self, other: &TextRange) -> 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 StructuralPartialEq for TextRange