use super::Token;

#[derive(Debug)]
pub enum Operator {
	Plus,
	Minus,
	Star, // multiplication
	Slash, // division
}

pub fn parse_operator(input: &str) -> Option<(Token, &str)> {
	let c: char = input.chars().next()?;
	let input = &input[1..];
	match c {
		'+' => Some((Token::Op(Operator::Plus), input)),
		'-' => Some((Token::Op(Operator::Minus), input)),
		'*' => Some((Token::Op(Operator::Star), input)),
		'/' => Some((Token::Op(Operator::Slash), input)),
		_ => None
	}
}