logos

Struct Skip

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pub struct Skip;
Expand description

Type that can be returned from a callback, informing the Lexer, to skip current token match. See also logos::skip.

§Example

use logos::{Logos, Skip};

#[derive(Logos, Debug, PartialEq)]
enum Token<'a> {
    // We will treat "abc" as if it was whitespace.
    // This is identical to using `logos::skip`.
    #[regex(" |abc", |_| Skip, priority = 3)]
    Ignored,

    #[regex("[a-zA-Z]+")]
    Text(&'a str),
}

let tokens: Vec<_> = Token::lexer("Hello abc world").collect();

assert_eq!(
    tokens,
    &[
        Ok(Token::Text("Hello")),
        Ok(Token::Text("world")),
    ],
);

Auto Trait Implementations§

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impl Freeze for Skip

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impl RefUnwindSafe for Skip

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impl Send for Skip

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impl Sync for Skip

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impl Unpin for Skip

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impl UnwindSafe for Skip

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.