Instigate Open Source Documentation

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src/generic/_default_constructible.hpp

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/*
 * @htmlonly
 * Copyright &copy 2008-2009
 * @endhtmlonly
 * Instigate CJSC, Armenia
 *
 * This library 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.
 *
 * This library 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 this library; if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef _INSTIGATE_OPEN_SOURCE_INTERNAL_HEADER_IN_CONCEPT
#error This is an internal header file used to implement Instigate Open Source.\
        It should never be included directly by a program.
#endif

#ifndef INSTIGATE_GENERIC_DEFAULT_CONSTRUCTIBLE_HPP
#define INSTIGATE_GENERIC_DEFAULT_CONSTRUCTIBLE_HPP

// Headers from this project

// Headers from other projects

// Headers from standard libraries
#include <new>

// Forward declaration
namespace instigate {
        namespace default_constructible {
                struct tag;
                template <typename T> struct interface;
                template <typename T> struct requirements;
        }
}

struct instigate::default_constructible::tag
{
};

template<typename T>
struct instigate::default_constructible::interface 
{
        static T* initialize(char* const p)
        {
                return ::new (static_cast<void*>(p)) T();
        }
}; 

template<typename T>
struct instigate::default_constructible::requirements
{

private:
        void check_default_constructible()
        {
                T t;
                (void)t;
        }
        static void require_initialize(char* p)
        {
                instigate::default_constructible::interface<T>::initialize(p);
        }

public: 
        requirements()
        {
                (void)&requirements<T>::require_initialize;
        }
/*
private:
        requirements(const requirements&) throw();
        requirements& operator=(const
                               requirements&) throw();
*/       
};

// vim:et:tabetop=8:shiftwidth=8:cindent:fo=croq:textwidth=80:

#endif // INSTIGATE_GENERIC_DEFAULT_CONSTRUCTIBLE_HPP

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