Function parse_unicode_oct

cel/src/parser/parse.rs:378–398

(first_char: &char, chars: &mut I)

}

fn parse_unicode_oct<I>(first_char: &char, chars: &mut I) -> Result<char, ParseUnicodeError>
where
    I: Iterator<Item = (usize, char)>,
{
    let mut unicode_seq: String = String::with_capacity(3);
    unicode_seq.push(*first_char);
    chars.take(2).for_each(|(_, c)| unicode_seq.push(c));

    u32::from_str_radix(&unicode_seq, 8)
        .map_err(|e| ParseUnicodeError::Oct {
            source: e,
            string: unicode_seq,
        })
        .and_then(|u| {
            if u <= 255 {
                char::from_u32(u).ok_or(ParseUnicodeError::Unicode { value: u })
            } else {
                Err(ParseUnicodeError::Unicode { value: u })
            }
        })
}

#[cfg(test)]
mod tests {