{"ast_node_type":"variable","tokens":[{"end":75,"kind":"keyword","start":0,"text":"if"}]}
            if let ConstScalar::UnevaluatedConst(id, subst) = &c.interned {
        if let chalk_ir::ConstValue::Concrete(c) = &constant.data(Interner).value {
                if let Ok(eval) = self.db.const_eval(*id, subst.clone(), None) {