{"ast_node_type":"other","tokens":[{"end":54,"kind":"keyword","start":0,"text":"try_as_const_integral(v).and_then(|v|"}]}
        try_as_const_integral(v).and_then(|v| unsafe {
    fn const_to_opt_u128(&self, v: &'ll Value, sign_ext: bool) -> Option<u128> {
            let (mut lo, mut hi) = (0u64, 0u64);