{"ast_node_type":"other","tokens":[{"end":40,"kind":"keyword","start":0,"text":"ast::Expr::IndexExpr(e)"}]}
            ast::Expr::IndexExpr(e) => {
            ast::Expr::Literal(e) => self.alloc_expr(Expr::Literal(e.kind().into()), syntax_ptr),
                let base = self.collect_expr_opt(e.base());