//                     | ValueExpression
// ValueExpression     → Operand
//
// Operand grammar follows below

// Expression represents a logical disjunction of clauses
type Expression struct {
	And []*AndCondition `parser:"@@ ( \"OR\" @@ )*"`
}

// ListExpr represents a literal list with elements as expressions.
type ListExpr struct {

                              unsigned char* is_list, TF_Status* status) {
  TF_AttrType ret = TF_ATTR_INT;
  const tensorflow::AttrTypeMap* attr_types_;
  bool is_function;
  status->status = tensorflow::AttrTypeMapForOp(
      tensorflow::unwrap(op)->Name().c_str(), &attr_types_, &is_function);
  if (!status->status.ok()) {
    return ret;
  }
  status->status =
      tensorflow::AttrTypeByName(*attr_types_, attr_name, &ret, is_list);