attachment_io_traits.h

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/*
 * Copyright (c) 2015:  G-CSC, Goethe University Frankfurt
 * Author: Sebastian Reiter
 * 
 * This file is part of UG4.
 * 
 * UG4 is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License version 3 (as published by the
 * Free Software Foundation) with the following additional attribution
 * requirements (according to LGPL/GPL v3 §7):
 * 
 * (1) The following notice must be displayed in the Appropriate Legal Notices
 * of covered and combined works: "Based on UG4 (www.ug4.org/license)".
 * 
 * (2) The following notice must be displayed at a prominent place in the
 * terminal output of covered works: "Based on UG4 (www.ug4.org/license)".
 * 
 * (3) The following bibliography is recommended for citation and must be
 * preserved in all covered files:
 * "Reiter, S., Vogel, A., Heppner, I., Rupp, M., and Wittum, G. A massively
 *   parallel geometric multigrid solver on hierarchically distributed grids.
 *   Computing and visualization in science 16, 4 (2013), 151-164"
 * "Vogel, A., Reiter, S., Rupp, M., Nägel, A., and Wittum, G. UG4 -- a novel
 *   flexible software system for simulating pde based models on high performance
 *   computers. Computing and visualization in science 16, 4 (2013), 165-179"
 * 
 * This program 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.
 */
 
#ifndef __H__UG_attachment_io_traits
#define __H__UG_attachment_io_traits
 
namespace ug{
 
 
template <class TAttachment>
struct attachment_io_traits{
  typedef typename TAttachment::ValueType                 value_type;
  typedef typename attachment_value_traits<value_type>::reference     reference_type;
  typedef typename attachment_value_traits<value_type>::const_reference   const_reference_type;
 
  static void write_value (std::ostream& out, const_reference_type v) {out << v;}
  static void read_value(std::istream& in, reference_type v)      {in >> v;}
};
 
template <>
struct attachment_io_traits<Attachment<bool> > {
  typedef bool                          value_type;
  typedef attachment_value_traits<value_type>::reference      reference_type;
  typedef attachment_value_traits<value_type>::const_reference  const_reference_type;
 
  static void write_value (std::ostream& out, const_reference_type v) {out << v;}
  static void read_value(std::istream& in, reference_type v)      {value_type tmp; in >> tmp; v = tmp;}
};
 
template <>
struct attachment_io_traits<Attachment<vector1> > {
  typedef vector1                         value_type;
  typedef attachment_value_traits<value_type>::reference      reference_type;
  typedef attachment_value_traits<value_type>::const_reference  const_reference_type;
 
  static void write_value (std::ostream& out, const_reference_type v)
  {
    out << v[0];
  }
  static void read_value(std::istream& in, reference_type v)  
  {
    in >> v[0];
  }
};
 
 
template <>
struct attachment_io_traits<Attachment<vector2> > {
  typedef vector2                         value_type;
  typedef attachment_value_traits<value_type>::reference      reference_type;
  typedef attachment_value_traits<value_type>::const_reference  const_reference_type;
 
  static void write_value (std::ostream& out, const_reference_type v)
  {
    out << v[0] << " " << v[1];
  }
  static void read_value(std::istream& in, reference_type v)  
  {
    in >> v[0] >> v[1];
  }
};
 
 
template <>
struct attachment_io_traits<Attachment<vector3> > {
  typedef vector3                         value_type;
  typedef attachment_value_traits<value_type>::reference      reference_type;
  typedef attachment_value_traits<value_type>::const_reference  const_reference_type;
 
  static void write_value (std::ostream& out, const_reference_type v)
  {
    out << v[0] << " " << v[1] << " " << v[2];
  }
  static void read_value(std::istream& in, reference_type v)  
  {
    in >> v[0] >> v[1] >> v[2];
  }
};
 
 
template <>
struct attachment_io_traits<Attachment<vector4> > {
  typedef vector4                         value_type;
  typedef attachment_value_traits<value_type>::reference      reference_type;
  typedef attachment_value_traits<value_type>::const_reference  const_reference_type;
 
  static void write_value (std::ostream& out, const_reference_type v)
  {
    out << v[0] << " " << v[1] << " " << v[2] << " " << v[3];
  }
  static void read_value(std::istream& in, reference_type v)  
  {
    in >> v[0] >> v[1] >> v[2] >> v[3];
  }
};
 
 
template <typename T>
struct attachment_io_traits<Attachment<std::vector<T> > >
{
  typedef typename std::vector<T>                     value_type;
  typedef typename attachment_value_traits<value_type>::reference     reference_type;
  typedef typename attachment_value_traits<value_type>::const_reference   const_reference_type;
 
  static void write_value (std::ostream& out, const_reference_type v)
  {
    out << v.size() << " ";
    for (size_t i = 0; i < v.size(); ++i)
      attachment_io_traits<Attachment<T> >::write_value(out, v[i]);
  }
  static void read_value(std::istream& in, reference_type v)
  {
    size_t sz;
    in >> sz;
    v.resize(sz);
    for (size_t i = 0; i < sz; ++i)
      attachment_io_traits<Attachment<T> >::read_value(in, v[i]);
  }
};
 
 
}// end of namespace
 
#endif  //__H__UG_attachment_io_traits