Struct logos::Skip

[+] Show declaration

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)]
    #[error]
    Error,

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

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

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