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use crate::{
character_class_parser::CharacterClassParserRequirement,
Error,
};
use std::fmt::{
Display,
Formatter,
Result as FmtResult,
};
#[derive(Debug)]
pub struct CharacterClassParserError<'a>
{
from: usize,
requirement: CharacterClassParserRequirement<'a>,
found: Option<char>,
}
impl<'a> CharacterClassParserError<'a>
{
pub fn new(
from: usize,
requirement: CharacterClassParserRequirement<'a>,
found: Option<char>,
) -> Self
{
Self {
from,
requirement,
found,
}
}
}
impl<'a> Error for CharacterClassParserError<'a>
{
fn from(&self, f: &mut Formatter) -> FmtResult
{
write!(f, "{}", self.from)
}
fn requirement(&self, f: &mut Formatter) -> FmtResult
{
write!(f, "{}", self.requirement)
}
fn result(&self, f: &mut Formatter) -> FmtResult
{
match self.found
{
Some(found) => write!(f, "{:?} found", found),
None => write!(f, "not found"),
}
}
fn causes(&self, _: &mut Formatter, _: usize) -> FmtResult
{
Ok(())
}
}
impl<'a> Display for CharacterClassParserError<'a>
{
fn fmt(&self, f: &mut Formatter) -> FmtResult
{
self.print(f, 0)
}
}