Method parse_params

src/parser.rs:492–524

(&mut self)

    }

    fn parse_params(&mut self) -> Option<Vec<Ident>> {
        let mut idents: Vec<Ident> = vec![];
        if self.peek_token(&Token::RightParen) {
            self.next_token();
            return Some(idents);
        }

        self.next_token();
        match self.current_token {
            Token::Ident(ref mut ident) => idents.push(Ident(ident.clone())),
            _ => {
                self.errors.push(
                   format!("Meow! Expected a purr-ameter identifier. Got: {} 🙀", self.current_token)
                );
                return None;
            }
        };

        while self.peek_token(&Token::Comma) {
            self.next_token();
            self.next_token();
            match self.current_token {
                Token::Ident(ref mut ident) => idents.push(Ident(ident.clone())),
                _ => return None,
            };
        }

        if !self.expect_peek(Token::RightParen) {
            return None;
        }

        Some(idents)
    }

    fn parse_call_arguments(&mut self) -> Option<Vec<Expr>> {
        let mut args: Vec<Expr> = vec![];