{"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"self.parse_pat_range_begin_with(begin,"}]}
                self.parse_pat_range_begin_with(begin, form)?
                let begin = self.mk_expr(span, ExprKind::Path(qself, path));
            } else if self.check(exp!(OpenBrace)) {