Function parse_precision

crates/common/src/format.rs:287–303

(text: &Wtf8)

}

fn parse_precision(text: &Wtf8) -> Result<(Option<usize>, &Wtf8), FormatSpecError> {
    let mut chars = text.code_points();
    Ok(match chars.next().and_then(CodePoint::to_char) {
        Some('.') => {
            let (size, remaining) = parse_number(chars.as_wtf8())?;
            if let Some(size) = size {
                if size > i32::MAX as usize {
                    return Err(FormatSpecError::PrecisionTooBig);
                }
                (Some(size), remaining)
            } else {
                (None, text)
            }
        }
        _ => (None, text),
    })
}

impl FormatSpec {
    pub fn parse(text: impl AsRef<Wtf8>) -> Result<Self, FormatSpecError> {