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Grapheme

Struct Grapheme

pub struct Grapheme<'a, E: Encoding> {
    pub units: &'a [E::Unit],
    pub width: usize,
}

Expand description

A borrowed extended grapheme cluster and its terminal cell width.

Fields§

§units: &'a [E::Unit]

Code units belonging to this cluster.

§width: usize

Terminal cells occupied by this cluster.

Implementations§

impl<E: Encoding> Grapheme<'_, E>

pub fn is_control(&self) -> bool

Returns whether the cluster’s base codepoint is a C0, DEL, or C1 control (Cc).

CRLF is one cluster and reports true. Controls always have width zero, but the converse does not hold: zero-width formats such as ZWSP and ZWJ, and combining marks, report false. Terminal renderers can use this distinction to decide whether to skip a cluster or draw it. An empty manually constructed cluster reports false.

Trait Implementations§

impl<E: Encoding> Clone for Grapheme<'_, E>

fn clone(&self) -> Self

Returns a duplicate of the value. Read more

1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more

impl<E: Encoding> Copy for Grapheme<'_, E>

Auto Trait Implementations§

impl<'a, E> Freeze for Grapheme<'a, E>

impl<'a, E> RefUnwindSafe for Grapheme<'a, E>
where <E as Encoding>::Unit: RefUnwindSafe,

impl<'a, E> Send for Grapheme<'a, E>
where <E as Encoding>::Unit: Sync,

impl<'a, E> Sync for Grapheme<'a, E>
where <E as Encoding>::Unit: Sync,

impl<'a, E> Unpin for Grapheme<'a, E>

impl<'a, E> UnsafeUnpin for Grapheme<'a, E>

impl<'a, E> UnwindSafe for Grapheme<'a, E>
where <E as Encoding>::Unit: RefUnwindSafe,

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> CloneToUninit for T
where T: Clone,

unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> ToOwned for T
where T: Clone,

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.