Cast.h

/*
 * Copyright 2020 IFPEN-CEA
 *
 * 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.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#pragma once
 
#include <type_traits>
 
#include <alien/data/IMatrix.h>
#include <alien/data/IVector.h>
 
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namespace Alien
{
 
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template <typename T>
T& cast(IMatrix& M)
{
  static_assert(std::is_base_of<IMatrix, T>::value, "IMatrix is not a valid base");
  auto* m = dynamic_cast<T*>(&M);
  if (m == nullptr)
    throw FatalErrorException("Bad matrix cast");
  return *m;
}
 
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template <typename T>
const T&
cast(const IMatrix& M)
{
  static_assert(std::is_base_of<IMatrix, T>::value, "IMatrix is not a valid base");
  auto* m = dynamic_cast<const T* const>(&M);
  if (m == nullptr)
    throw FatalErrorException("Bad matrix cast");
  return *m;
}
 
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template <typename T>
T& cast(IVector& M)
{
  static_assert(std::is_base_of<IVector, T>::value, "IVector is not a valid base");
  auto* m = dynamic_cast<T*>(&M);
  if (m == nullptr)
    throw FatalErrorException("Bad vector cast");
  return *m;
}
 
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template <typename T>
const T&
cast(const IVector& M)
{
  static_assert(std::is_base_of<IVector, T>::value, "IVector is not a valid base");
  auto* m = dynamic_cast<const T* const>(&M);
  if (m == nullptr)
    throw FatalErrorException("Bad vector cast");
  return *m;
}
 
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} // namespace Alien
 
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