Command.hh

//********************************************************************
//*** ResourcePool/Command.hh
//*** Copyright (c) 2003-2008 by Markus Winand <mws@fatalmind.com>
//*** $Id: Command.hh,v 1.18 2008/03/24 15:45:02 mws Exp $
//********************************************************************
/*
This file is part of ResourcePool.

ResourcePool 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.

ResourcePool 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 ResourcePool; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307  USA */

#ifndef RESOURCEPOOL_COMMAND_HH
#define RESOURCEPOOL_COMMAND_HH

#ifndef RESOURCEPOOL_EXECUTEFWD_HH
#include "ExecuteFwd.hh"
#endif

#include "util/Clone.hh"

namespace fatalmind {

template<class PT>class ResourcePool; // Fwd decl

template<class PT>
class Command: public Clone {
    protected:
        Command();
    public:
        typedef PT pool_type;

        virtual ~Command() {
        }

        virtual void execute(typename PT::resource_t& rr) = 0;

        virtual void outputoperator(std::ostream&) const;
        // TODO, must be virtual -> so it can't be a template, but the operator<< is a template ;) 
    protected:
        const typename PT::factory_t& getFactory(const ResourcePool<PT>& p) const {
            return p.getFactory();
        }

    private:
        bool topLevel() const;
        void topLevel(bool tl);
        bool _tl;

    friend 
        class _RPExecute<PT>;
};

} // namespace fatalmind

template<class charT, class traits, class PT>
inline
std::basic_ostream<charT, traits>& operator<<(std::basic_ostream<charT, traits>& s, const fatalmind::Command<PT>& rho) {
    rho.outputoperator(s);
    return s;
}

#endif

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