Method parse

crates/css_ast/src/constraints.rs:15–28

(p: &mut Parser<'a, I>)

impl<'a, T: Parse<'a> + ToNumberValue> Parse<'a> for NonNegative<T> {
	fn parse<I>(p: &mut Parser<'a, I>) -> Result<Self>
	where
		I: Iterator<Item = Cursor> + Clone,
	{
		let cursor = p.peek_n(1);
		let value = p.parse::<T>()?;
		if let Some(num) = value.to_number_value()
			&& num < 0.0
		{
			Err(Diagnostic::new(cursor, Diagnostic::non_negative))?;
		}

		Ok(Self(value))
	}
}

impl<T> NonNegative<T> {