factory_2.h

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//
// Copyright (c) 2014 Limit Point Systems, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//


#ifndef FACTORY_2_H
#define FACTORY_2_H

#ifndef SHEAF_DLL_SPEC_H
#include "SheafSystem/sheaf_dll_spec.h"
#endif

#ifndef STD_IOSTREAM_H
#include "SheafSystem/std_iostream.h"
#endif

#ifndef STD_MAP_H
#include "SheafSystem/std_map.h"
#endif

#ifndef STD_STRING_H
#include "SheafSystem/std_string.h"
#endif

namespace sheaf
{

class namespace_poset;
class arg_list;

template <typename T>
class rc_ptr;

// Forward declarations to enable friend declaration.

template <typename T, typename R>
class factory_2;

template <typename T, typename R>
ostream& operator << (ostream &os, const factory_2<T, R>& xf);


template <typename T, typename R = T*>
class factory_2
{
  friend ostream& operator << <T, R> (ostream& xos, const factory_2<T, R>& xf);

  // ===========================================================
  // ===========================================================

public:

  factory_2();

  virtual ~factory_2();

//   ///
//   /// Creates an instance of type xclient_class_name.
//   ///
//   R new_instance(const string& xclient_class_name);

  R new_instance(const string& xclient_class_name, const arg_list& xargs);

  void insert_prototype(T* xprototype);

  void delete_prototype(const string& xclass_name);

  bool contains_prototype(const string& xclass_name) const;

protected:

private:

  factory_2(const factory_2& xother);

  typedef map<string, T*> prototypes_map_type;

  prototypes_map_type _prototypes_map;

};

// ===========================================================
// NON-MEMBER FUNCTIONS
// ===========================================================

template <typename T, typename R>
ostream& operator << (ostream& xos, const factory_2<T, R>& xf);
 
} // namespace sheaf

#endif // ifndef FACTORY_2_H