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use crate::{
stringify_parser::{
StringifyParserError,
StringifyParserRequirement,
},
Parser,
};
use std::marker::PhantomData;
#[derive(Debug)]
pub struct StringifyParser<'a, P>
where
P: Parser<'a>,
{
requirement: P,
_a: PhantomData<&'a ()>,
}
impl<'a, P> StringifyParser<'a, P>
where
P: Parser<'a>,
{
pub fn new(requirement: P) -> Self
{
Self {
requirement,
_a: PhantomData,
}
}
}
impl<'a, P> Parser<'a> for StringifyParser<'a, P>
where
P: Parser<'a>,
{
type Error = StringifyParserError<'a, P>;
type Output = &'a str;
type Requirement = StringifyParserRequirement<'a, P>;
type RequirementContext = ();
fn parse(&self, src: &'a str, pos: &mut usize) -> Result<Self::Output, Self::Error>
{
let from = *pos;
self.requirement
.skip(src, pos)
.map(|_| &src[from..*pos])
.map_err(|err| StringifyParserError::new(from, self.requirement(None), err))
}
fn requirement(&self, _: Option<&Self::RequirementContext>) -> Self::Requirement
{
StringifyParserRequirement::new(self.requirement.requirement(None))
}
}