parsy 0.5.6

An easy-to-use, efficient parser combinators library
Documentation 
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use crate::{PResult, Parser, ParserInput};

#[derive(Clone, Copy)]
pub struct Char {
    char: char,
}

impl Char {
    pub fn new(char: char) -> Self {
        Self { char }
    }
}

impl Parser<char> for Char {
    fn parse_inner(&self, input: &mut ParserInput) -> PResult<char> {
        let start = input.at();

        let eaten = input
            .try_eat_char()
            .ok_or_else(|| start.expected_char(self.char, 0))?;

        if eaten.data == self.char {
            Ok(eaten)
        } else {
            Err(start.expected_char(self.char, 1))
        }
    }
}