AnchorStart

harper_core::expr

Struct AnchorStart

pub struct AnchorStart;

Expand description

A Step which will match only if the cursor is over the first word-like of a token stream. It will return that token.

Trait Implementations§

impl Step for AnchorStart

fn step( &self, tokens: &[Token], cursor: usize, _source: &[char], ) -> Option<isize>

Auto Trait Implementations§

impl Freeze for AnchorStart

impl RefUnwindSafe for AnchorStart

impl Send for AnchorStart

impl Sync for AnchorStart

impl Unpin for AnchorStart

impl UnwindSafe for AnchorStart

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<S> Expr for S
where S: Step + ?Sized,

fn run( &self, cursor: usize, tokens: &[Token], source: &[char], ) -> Option<Span<Token>>

impl<E> ExprExt for E
where E: Expr + ?Sized,

fn iter_matches<'a>( &'a self, tokens: &'a [Token], source: &'a [char], ) -> Box<dyn Iterator<Item = Span<Token>> + 'a>

Iterate over all matches of this expression in the document, automatically filtering out overlapping matches, preferring the first.

fn iter_matches_in_doc<'a>( &'a self, doc: &'a Document, ) -> Box<dyn Iterator<Item = Span<Token>> + 'a>

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> IntoEither for T

fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

impl<E> OwnedExprExt for E
where E: Expr + 'static,

fn or(self, other: impl Expr + 'static) -> FirstMatchOf

Returns an expression that matches either the current one or the expression contained in other.

fn or_longest(self, other: impl Expr + 'static) -> LongestMatchOf

Returns an expression that matches the longest of the current one or the expression contained in other.

If you don’t need the longest match, prefer using the short-circuiting [Self::or()] instead.

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.

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

fn vzip(self) -> V

impl<T> ErasedDestructor for T
where T: 'static,

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