/*************************************************************************************

    Grid physics library, www.github.com/paboyle/Grid 

    Source file: ./lib/serialisation/BinaryIO.h

    Copyright (C) 2015

Author: Antonin Portelli <antonin.portelli@me.com>
Author: Peter Boyle <paboyle@ph.ed.ac.uk>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    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 General Public License for more details.

    You should have received a copy of the GNU General Public License along
    with this program; if not, write to the Free Software Foundation, Inc.,
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

    See the full license in the file "LICENSE" in the top level distribution directory
*************************************************************************************/
/*  END LEGAL */
#ifndef GRID_SERIALISATION_BINARY_READER_H
#define GRID_SERIALISATION_BINARY_READER_H

#include <iostream>
#include <iomanip>
#include <fstream>
#include <sstream>
#include <math.h>
#include <vector>
#include <cassert>

NAMESPACE_BEGIN(Grid);
  
class BinaryWriter: public Writer<BinaryWriter>
{
public:
  BinaryWriter(const std::string &fileName);
  virtual ~BinaryWriter(void) = default;
  void push(const std::string &s) {};
  void pop(void) {};
  template <typename U>
  void writeDefault(const std::string &s, const U &x);
  template <typename U>
  void writeDefault(const std::string &s, const std::vector<U> &x);
  void writeDefault(const std::string &s, const char *x);
private:
  std::ofstream file_;
};
  
class BinaryReader: public Reader<BinaryReader>
{
public:
  BinaryReader(const std::string &fileName);
  virtual ~BinaryReader(void) = default;
  bool push(const std::string &s) {return true;}
  void pop(void) {};
  template <typename U>
  void readDefault(const std::string &s, U &output);
  template <typename U>
  void readDefault(const std::string &s, std::vector<U> &output);
private:
  std::ifstream file_;
};
  
// Writer template implementation ////////////////////////////////////////////
template <typename U>
void BinaryWriter::writeDefault(const std::string &s, const U &x)
{
  file_.write((char *)&x, sizeof(U));
}
  
template <>
void BinaryWriter::writeDefault(const std::string &s, const std::string &x);
  
template <typename U>
void BinaryWriter::writeDefault(const std::string &s, const std::vector<U> &x)
{
  uint64_t sz = x.size();
    
  write("", sz);
  for (uint64_t i = 0; i < sz; ++i)
    {
      write("", x[i]);
    }
}
  
// Reader template implementation ////////////////////////////////////////////
template <> void BinaryReader::readDefault(const std::string &s, std::string &output);
  
template <typename U>
void BinaryReader::readDefault(const std::string &s, U &output)
{
  file_.read((char *)&output, sizeof(U));
}
  
template <typename U>
void BinaryReader::readDefault(const std::string &s, std::vector<U> &output)
{
  uint64_t sz;
    
  read("", sz);
  output.resize(sz);
  for (uint64_t i = 0; i < sz; ++i)
    {
      read("", output[i]);
    }
}

NAMESPACE_END(Grid);

#endif