{"ast_node_type":"other","tokens":[{"end":42,"kind":"keyword","start":0,"text":"self.expect_keyword(exp!(Const))?;"}]}
        self.expect_keyword(exp!(Const))?;
    fn parse_const_block(&mut self, span: Span, pat: bool) -> PResult<'a, P<Expr>> {
        let (attrs, blk) = self.parse_inner_attrs_and_block(None)?;