// A derived attribute that returns the size of `idx`-th ODS-declared variadic
// operand.
class TF_DerivedOperandSizeAttr<int idx> : DerivedAttr<
  "size_t",
  "auto range = getODSOperands(" # idx # ");\n"
  "return std::distance(range.begin(), range.end());",
  [{ $_builder.getI64IntegerAttr($_self) }]>;

// A derived attribute that returns the element type of `idx`-th ODS-declared

  }

 private:
  // Return true is there are still unfilled ODS slots for adding more inputs.
  bool IsNextODSArgAvailable();

  MLIRContext* context_;
  MlirFunctionContext* function_context_;
  SmallVector<Value, 8> operands_;
  llvm::StringMap<Attribute> attrs_;
  std::unique_ptr<OperationState> state_;
  // This is the index of the next ODS operand that will be added with AddInput
  // or AddInput;

  // The elements are owned by the MLIRContext.
  absl::flat_hash_set<absl::string_view> attrs_to_ignore;

  // We ignore attributes attached to the operation when there is already a
  // derived attribute defined in ODS.
  if (derived_attrs) {
    for (auto derived_attr : derived_attrs) {
      attrs_to_ignore.insert(
          mlir::StringRefToView(derived_attr.getName().strref()));
    }
  }

        return absl::InternalError("The input of BatchMatMul must have rank.");
      }
    } else if (function_name.contains("gather")) {
      // This op is guaranteed to be a constant as ODS checks IsConstTensor.
      // Check if the number of elements meets the requirement.
      int64_t num_elements =
          mlir::cast<ShapedType>(call_op.getOperand(0).getType())
              .getNumElements();

// Implementation for all the operations defined in ODS (op definition spec).
//===----------------------------------------------------------------------===//

namespace {

// Verifies that every control operands are at the end of the list.
// Used by the constraint `ControlOperandsAfterAllData` in ODS.
LogicalResult VerifyControlOperandsAfterAllData(Operation *op) {
  bool found_control = false;

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