// $Id$
//
// Copyright (C) 2006
// Fraunhofer Institut fuer offene Kommunikationssysteme (FOKUS)
// Kompetenzzentrum fuer Satelitenkommunikation (SatCom)
//     Stefan Bund <stefan.bund@fokus.fraunhofer.de>
//
// 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.,
// 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

/** \file
    \brief SocketHandle inline template implementation
 */

#include "SocketHandle.ih"

// Custom includes
#include <typeinfo>
#include <boost/lexical_cast.hpp>
#include "../Utils/TypeInfo.hh"

#define prefix_ inline
///////////////////////////////cti.p///////////////////////////////////////

template <class SocketPolicy>
prefix_ senf::SocketHandle<SocketPolicy>::SocketHandle()
{}

template <class SocketPolicy>
template <class OtherPolicy>
prefix_ senf::SocketHandle<SocketPolicy>::SocketHandle(SocketHandle<OtherPolicy> other,
                                                              typename IsCompatible<OtherPolicy>::type *)
    : FileHandle(other)
{}

template <class SocketPolicy>
template <class OtherPolicy>
prefix_ typename senf::SocketHandle<SocketPolicy>::template IsCompatible<OtherPolicy>::type const &
senf::SocketHandle<SocketPolicy>::operator=(SocketHandle<OtherPolicy> other)
{
    assign(other);
    return *this;
}

template <class SocketPolicy>
prefix_
senf::SocketHandle<SocketPolicy>::SocketHandle(std::auto_ptr<SocketProtocol> protocol,
                                                      bool isServer)
    : FileHandle(std::auto_ptr<FileBody>(new SocketBody(protocol,isServer)))
{}

template <class SocketPolicy>
prefix_ senf::SocketHandle<SocketPolicy>::SocketHandle(FileHandle other, bool isChecked)
    : FileHandle(other)
{
    BOOST_ASSERT( isChecked );
    BOOST_ASSERT( dynamic_cast<SocketBody *>(&FileHandle::body()) );
}

template <class SocketPolicy>
prefix_ senf::SocketBody & senf::SocketHandle<SocketPolicy>::body()
{
    BOOST_ASSERT( dynamic_cast<SocketBody *>(&FileHandle::body()) );
    return static_cast<SocketBody &>(FileHandle::body());
}

template <class SocketPolicy>
prefix_ senf::SocketBody const & senf::SocketHandle<SocketPolicy>::body()
    const
{
    BOOST_ASSERT( dynamic_cast<SocketBody const *>(&FileHandle::body()) );
    return static_cast<SocketBody const &>(FileHandle::body());
}

template <class SocketPolicy>
prefix_ senf::SocketProtocol const & senf::SocketHandle<SocketPolicy>::protocol()
    const
{
    return body().protocol();
}

template <class SocketPolicy>
prefix_ void senf::SocketHandle<SocketPolicy>::assign(FileHandle other)
{
    FileHandle::operator=(other);
}

template <class SocketPolicy>
prefix_ senf::SocketHandle<SocketPolicy>
senf::SocketHandle<SocketPolicy>::cast_static(FileHandle handle)
{
    return SocketHandle(handle,true);
}

template <class SocketPolicy>
prefix_ senf::SocketHandle<SocketPolicy>
senf::SocketHandle<SocketPolicy>::cast_dynamic(FileHandle handle)
{
    // throws bad_cast if the body is not a SocketBody
    SocketBody & body (dynamic_cast<SocketBody&>(FileHandle::body(handle)));
    // throws bad_cast if the policy is not compatible
    SocketPolicy::checkBaseOf(body.protocol().policy());
    return cast_static(handle);
}

template <class Target, class Source>
prefix_ Target senf::static_socket_cast(Source handle)
{
    BOOST_STATIC_ASSERT((
        boost::is_convertible<Source*,FileHandle*>::value &&
        boost::is_convertible<Target*,FileHandle*>::value &&
        ( boost::is_convertible<Source,Target>::value ||
          boost::is_convertible<Target,Source>::value ) ));
    BOOST_ASSERT( check_socket_cast<Target>(handle) );
    return Target::cast_static(handle);
}

template <class Target, class Source>
prefix_ Target senf::dynamic_socket_cast(Source handle)
{
    BOOST_STATIC_ASSERT((
        boost::is_convertible<Source*,FileHandle*>::value &&
        boost::is_convertible<Target*,FileHandle*>::value &&
        ( boost::is_convertible<Source,Target>::value ||
          boost::is_convertible<Target,Source>::value ) ));
    return Target::cast_dynamic(handle);
}

template <class Target, class Source>
prefix_ bool senf::check_socket_cast(Source handle)
{
    BOOST_STATIC_ASSERT((
        boost::is_convertible<Source*,FileHandle*>::value &&
        boost::is_convertible<Target*,FileHandle*>::value &&
        ( boost::is_convertible<Source,Target>::value ||
          boost::is_convertible<Target,Source>::value ) ));
    // we don't have a non-throwing variant of cast_dynamic
    // for two reasons:
    // a) since the handle is passed back by value, we cannot return
    //    something like a null handle
    // b) it is simpler to implement cast_dynamic throwig bad_cast on
    //    failure than implementing cast_check
    try {
        Target::cast_dynamic(handle);
    }
    catch (std::bad_cast const &) {
        return false;
    }
    return true;
}

template <class SocketPolicy>
prefix_ void senf::SocketHandle<SocketPolicy>::state(SocketStateMap & map, unsigned lod)
{
    // We use typeid here even though the type of *this is static
    // (SocketHandle is not polymorphic and has no vtable). This will
    // automatically include the SocketPolicy template parameter in
    // the type name and therefore show the \e static policy of the
    // socket handle.
    map["handle"] = prettyName(typeid(*this));
    body().state(map,lod);
}

template <class SocketPolicy>
prefix_ std::string senf::SocketHandle<SocketPolicy>::dumpState(unsigned lod)
{
    SocketStateMap map;
    state(map,lod);
    return detail::dumpState(map);
}

///////////////////////////////////////////////////////////////////////////
// senf::detail::ConvertibleString

template <class T>
prefix_ senf::detail::ConvertibleString::ConvertibleString(T const & other)
    : std::string(boost::lexical_cast<std::string>(other))
{}

///////////////////////////////cti.e///////////////////////////////////////
#undef prefix_


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// c-file-style: "senf"
// indent-tabs-mode: nil
// ispell-local-dictionary: "american"
// compile-command: "scons -u test"
// comment-column: 40
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