parameter_vector.h

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// The libMesh Finite Element Library.
// Copyright (C) 2002-2019 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
 
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
 
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
 
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
 
 
#ifndef LIBMESH_PARAMETER_VECTOR_H
#define LIBMESH_PARAMETER_VECTOR_H
 
 
// Local Includes
#include "libmesh/libmesh_common.h"
#include "libmesh/parameter_accessor.h"
 
// C++ Includes
#include <vector>
#include <memory>
 
namespace libMesh
{
 
 
class ParameterVector
{
public:
  ParameterVector() : _is_shallow_copy(false) {}
 
  explicit
  ParameterVector(const std::vector<Number *> & params);
 
  ~ParameterVector();
 
  void deep_copy(ParameterVector & target) const;
 
  void shallow_copy(ParameterVector & target) const;
 
  void value_copy(ParameterVector & target) const;
 
  void clear();
 
  std::size_t size() const { return _params.size(); }
 
  void resize(std::size_t s);
 
  void push_back(std::unique_ptr<ParameterAccessor<Number>> new_accessor);
 
  void deep_resize(std::size_t s);
 
  const ParameterAccessor<Number> & operator[](std::size_t i) const;
 
  ParameterAccessor<Number> & operator[](std::size_t i);
 
  ParameterVector & operator *= (const Number a);
 
  ParameterVector & operator += (const ParameterVector & a);
 
private:
  std::vector<ParameterAccessor<Number> *> _params;
 
  std::vector<Number> _my_data;
 
  bool _is_shallow_copy;
};
 
 
 
// ------------------------------------------------------------
// ParameterVector inline methods
 
inline
ParameterVector::~ParameterVector()
{
  this->clear();
}
 
 
inline
void
ParameterVector::clear()
{
  if (!_is_shallow_copy)
    for (auto & param : _params)
      delete param;
 
  _params.clear();
  _my_data.clear();
}
 
 
 
inline
void ParameterVector::push_back(std::unique_ptr<ParameterAccessor<Number>> new_accessor)
{
  // Can't append stuff we are responsible for if we're already a shallow copy.
  libmesh_assert(!_is_shallow_copy);
  libmesh_assert(new_accessor.get());
  _params.push_back(new_accessor.release());
}
 
 
 
inline
const ParameterAccessor<Number> & ParameterVector::operator[] (std::size_t i) const
{
  libmesh_assert_greater (_params.size(), i);
 
  return *_params[i];
}
 
 
 
inline
ParameterAccessor<Number> & ParameterVector::operator[] (std::size_t i)
{
  libmesh_assert_greater (_params.size(), i);
 
  return *_params[i];
}
 
} // namespace libMesh
 
#endif // LIBMESH_PARAMETER_VECTOR_H