/*
 * Copyright 2022 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "fcp/aggregation/core/tensor_data.h"

#include "fcp/base/monitoring.h"

namespace fcp {
namespace aggregation {

Status TensorData::CheckValid(size_t value_size) const {
  FCP_CHECK(value_size > 0);
  if (byte_size() == 0) {
    return FCP_STATUS(FAILED_PRECONDITION)
           << "TensorData: non-empty size required";
  }

  if ((byte_size() % value_size) != 0) {
    return FCP_STATUS(FAILED_PRECONDITION)
           << "TensorData: byte_size() must be a multiple of value_size "
           << value_size;
  }

  if ((reinterpret_cast<size_t>(data()) % value_size) != 0) {
    return FCP_STATUS(FAILED_PRECONDITION)
           << "TensorData: data() address is not aligned by value_size "
           << value_size;
  }

  return FCP_STATUS(OK);
}

}  // namespace aggregation
}  // namespace fcp