subplaceholder.hpp

/*
  ANCH Framework: ANother C++ Hack is a C++ framework based on C++11 standard
  Copyright (C) 2012 Vincent Lachenal
 
  This file is part of ANCH Framework.
 
  ANCH Framework 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 3 of the License, or
  (at your option) any later version.
 
  ANCH Framework 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 ANCH Framework.  If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
 
#include <string>
#include <optional>
 
#include "events/observer.hpp"
 
namespace anch::conf {
 
  /* Declare anch::conf::ConfEvt which is the event that will be send when configuration has been resolved */
  struct ResConfEvt;

  struct SubPlaceholder: anch::events::Observer<anch::conf::ResConfEvt> {

    std::string res;

    std::string arg;

    std::optional<std::string> val = std::optional<std::string>();

    SubPlaceholder() noexcept;

    virtual ~SubPlaceholder() noexcept;

    virtual void handle(const anch::events::Event<anch::conf::ResConfEvt>& event) noexcept;

    bool resvoled() noexcept;
 
  };
 
}