command-closure.hpp

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/*
  COMMAND-CLOSURE.hpp  -  defining execution targets and parameters for commands

  Copyright (C)         Lumiera.org
    2009,               Hermann Vosseler <Ichthyostega@web.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., 675 Mass Ave, Cambridge, MA 02139, USA.

*/


#ifndef CONTROL_COMMAND_CLOSURE_H
#define CONTROL_COMMAND_CLOSURE_H

#include "lib/meta/function-erasure.hpp"
#include "steam/control/argument-erasure.hpp"
#include "lib/diff/gen-node.hpp"

#include <memory>
#include <string>


namespace steam {
namespace control {
  
  using lib::meta::FunErasure;
  using lib::meta::StoreFunction;
  
  using std::string;
  
  
  
  typedef FunErasure<StoreFunction> CmdFunctor;
  
  class CommandImplCloneBuilder;
  
  
  
  
  class CmdClosure
    {
    public:
      virtual ~CmdClosure() {}
      explicit operator bool()  const { return isValid(); }
      
      virtual operator string() const                      =0;
      virtual bool isValid ()   const                      =0;    
      virtual bool isCaptured () const                     =0;    
      virtual void bindArguments (Arguments&)              =0;    
      virtual void bindArguments (lib::diff::Rec const&)   =0;    
      virtual void unbindArguments()                       =0;    
      virtual void invoke (CmdFunctor const&)              =0;    
      virtual void accept (CommandImplCloneBuilder&) const =0;    
    };
  
  
  using PClo = std::shared_ptr<CmdClosure>;
  
  
  
}} // namespace steam::control
#endif /*CONTROL_COMMAND_CLOSURE_H*/