{"ast_node_type":"function","tokens":[{"end":95,"kind":"keyword","start":0,"text":"fn"}]}
    fn parse_expr_loop(&mut self, opt_label: Option<Label>, lo: Span) -> PResult<'a, P<Expr>> {
    /// Parses `loop { ... }` (`loop` token already eaten).
        let loop_span = self.prev_token.span;