PDL.h

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/*  YAP - Yet another PWA toolkit
    Copyright 2015, Technische Universitaet Muenchen,
    Authors: Daniel Greenwald, Johannes Rauch

    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 3 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, see <http://www.gnu.org/licenses/>.
*/


#ifndef  yap_PDL_h
#define  yap_PDL_h

#include "ParticleFactory.h"

#include <iterator>
#include <sstream>
#include <string>

namespace yap {

class PDLIterator : public std::iterator<std::input_iterator_tag, std::string>
{

public:

    // defined for convenience
    using char_type    = typename std::string::value_type;
    using traits_type  = typename std::string::traits_type;
    using istream_type = std::basic_istream<char_type, traits_type>;

private:

    PDLIterator() : InputStream_(nullptr) {};

public:

    PDLIterator(istream_type& is) : InputStream_(&is) { ++(*this); };

    const ParticleTableEntry operator*() const;

    ParticleTableEntry operator->() const
    { return (*this).operator*(); };

    PDLIterator& operator++();

    PDLIterator operator++(int);

    static const PDLIterator& end()
    { static PDLIterator PDL_END; return PDL_END; }

    friend const bool operator==(const PDLIterator& lhs, const PDLIterator& rhs)
    { return lhs.InputStream_ == rhs.InputStream_; }

private:

    istream_type* InputStream_;

    std::string Value_;

};

inline const bool operator!=(const PDLIterator& lhs, const PDLIterator& rhs)
{ return !(lhs == rhs); }

ParticleFactory read_pdl_file(const std::string& filename);

}

#endif