blob: fb5ba6b4d5c638c66cbe2b16dacc49d4be64ef20 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
|
use std::str::FromStr;
use pest::Span;
use pest::iterators::Pair;
use pest::error::{Error,ErrorVariant};
pub trait PairExt<R> where R: pest::RuleType {
fn parse<T, E>(&self) -> Result<T, Box<Error<R>>> where T: FromStr<Err = E>, E: ToString;
}
impl<'l, R> PairExt<R> for Pair<'l, R> where R: pest::RuleType {
fn parse<T, E>(&self) -> Result<T, Box<Error<R>>> where T: FromStr<Err = E>, E: ToString {
self.as_str().parse().map_err(|e| to_parse_error(self.as_span(), &e))
}
}
pub(crate) fn to_parse_error<E, R>(span: Span, e: &E) -> Box<Error<R>> where E: ToString, R: pest::RuleType {
let var: ErrorVariant<R> = ErrorVariant::CustomError { message: e.to_string() };
Box::new(Error::new_from_span(var, span))
}
|
