parsy 0.16.3

An easy-to-use, efficient parser combinators library
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

use std::marker::PhantomData;

use perfect_derive::perfect_derive;

use crate::{Parser, ParserInput, ParserNonConstUtils, ParserResult};

/// See [`to`](`crate::ParserConstUtils::to`)
#[perfect_derive(Debug, Clone, Copy)]
pub struct To<T, P: Parser<T>, U: Copy> {
    parser: P,
    data: U,
    _p: PhantomData<T>,
}

impl<T, P: Parser<T>, U: Copy> To<T, P, U> {
    pub const fn new(parser: P, data: U) -> Self {
        Self {
            parser,
            data,
            _p: PhantomData,
        }
    }
}

impl<T, P: Parser<T>, U: Copy> Parser<U> for To<T, P, U> {
    fn parse_inner(&self, input: &mut ParserInput) -> ParserResult<U> {
        self.parser
            .parse(input)
            .map(|span| span.forge_here(self.data))
    }
}