include/dlvhex2/PluginContainer.h

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/* dlvhex -- Answer-Set Programming with external interfaces.
 * Copyright (C) 2005-2007 Roman Schindlauer
 * Copyright (C) 2006-2015 Thomas Krennwallner
 * Copyright (C) 2009-2016 Peter Schüller
 * Copyright (C) 2011-2016 Christoph Redl
 * Copyright (C) 2015-2016 Tobias Kaminski
 * Copyright (C) 2015-2016 Antonius Weinzierl
 *
 * This file is part of dlvhex.
 *
 * dlvhex is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * dlvhex 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with dlvhex; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 */

#if !defined(_DLVHEX_PLUGINCONTAINER_H)
#define _DLVHEX_PLUGINCONTAINER_H

#include "dlvhex2/PlatformDefinitions.h"
#include "dlvhex2/fwd.h"
#include "dlvhex2/PluginInterface.h"

#include <string>
#include <vector>

#include <boost/shared_ptr.hpp>

DLVHEX_NAMESPACE_BEGIN

class DLVHEX_EXPORT PluginContainer
{
    private:
        PluginContainer(const PluginContainer& p);

    public:
        PluginContainer();

        ~PluginContainer();

        //
        // loading and accessing
        //

        void loadPlugins(const std::string& searchpath="");

        void addInternalPlugin(PluginInterfacePtr plugin);

        const std::vector<PluginInterfacePtr>& getPlugins() const
            { return pluginInterfaces; }

        //
        // batch operations on all plugins
        //

        void printUsage(std::ostream& o);

    public:
        struct LoadedPlugin;
        typedef boost::shared_ptr<LoadedPlugin> LoadedPluginPtr;
        typedef std::vector<LoadedPluginPtr> LoadedPluginVector;
        typedef std::vector<PluginInterfacePtr> PluginInterfaceVector;

    private:
        void addInternalPlugin(LoadedPluginPtr lplugin);

        std::string searchPath;

        LoadedPluginVector plugins;

        PluginInterfaceVector pluginInterfaces;
};
typedef boost::shared_ptr<PluginContainer> PluginContainerPtr;

DLVHEX_NAMESPACE_END
#endif                           /* _DLVHEX_PLUGINCONTAINER_H */


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