Method parse_comp_for

parser/src/parser/parser.rs:1663–1698

https://docs.python.org/3/reference/expressions.html#displays-for-lists-sets-and-dictionaries

(&mut self)

    // https://docs.python.org/3/reference/expressions.html#displays-for-lists-sets-and-dictionaries
    fn parse_comp_for(&mut self) -> Result<Vec<Comprehension>, ParsingError> {
        // if current token is async
        let node = self.start_node();
        let is_async = self.eat(Kind::Async);

        let mut generators = vec![];
        loop {
            self.expect(Kind::For)?;
            let target = self.parse_target_list()?;
            self.expect(Kind::In)?;
            let iter = self.parse_or_test()?;
            let ifs = if self.eat(Kind::If) {
                let mut ifs = vec![];
                loop {
                    ifs.push(self.parse_or_test()?);
                    if !self.eat(Kind::If) {
                        break;
                    }
                }
                ifs
            } else {
                vec![]
            };
            generators.push(Comprehension {
                node: self.finish_node(node),
                target,
                iter,
                ifs,
                is_async,
            });
            if !matches!(self.cur_kind(), Kind::For) {
                break;
            }
        }
        Ok(generators)
    }

    // https://docs.python.org/3/reference/simple_stmts.html#grammar-token-python-grammar-target_list
    fn parse_target_list(&mut self) -> Result<Expression, ParsingError> {