// src/backend/serializers_gatekeeper.cc - Copyright 2005, 2006, University
//               of Padova, dept. of Pure and Applied
//               Mathematics
//
// This file is part of SGPEMv2.
//
// This 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.
//
// SGPEMv2 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 SGPEMv2. If not, see http://www.gnu.org/licenses/.


#include <sgpemv2/serializer.hh>
#include <sgpemv2/serializers_gatekeeper.hh>

// Include full template definition only in implementation files:
#include <sgpemv2/templates/singleton.tcc>

#include <algorithm>
#include <cassert>

using std::find;
using std::runtime_error;
using std::vector;
using namespace sgpem;

// Explicit template instantiation to allow to export symbols from the DSO.
template class sgpem::Singleton<SerializersGatekeeper>;

typedef vector<Serializer *>::iterator SerializerIterator;

vector<Serializer *>
SerializersGatekeeper::get_registered () const
{
    return _registered;
}

void
SerializersGatekeeper::register_serializer (Serializer *serializer)
{
    assert (serializer != nullptr);

    SerializerIterator end = _registered.end ();

    if (find (_registered.begin (), end, serializer) == end)
        _registered.push_back (serializer);
}

void
SerializersGatekeeper::unregister_serializer (Serializer *serializer)
{
    assert (serializer != nullptr);

    SerializerIterator end = _registered.end ();
    SerializerIterator pos = find (_registered.begin (), end, serializer);

    if (pos != end)
    {
        _registered.erase (pos);
    }
}


SerializersGatekeeper::SerializersGatekeeper ()
{
}