57 lines
1.2 KiB
C++
57 lines
1.2 KiB
C++
/* Copyright 2006-2009 Joaquin M Lopez Munoz.
|
|
* Distributed under the Boost Software License, Version 1.0.
|
|
* (See accompanying file LICENSE_1_0.txt or copy at
|
|
* http://www.boost.org/LICENSE_1_0.txt)
|
|
*
|
|
* See http://www.boost.org/libs/flyweight for library home page.
|
|
*/
|
|
|
|
#ifndef BOOST_FLYWEIGHT_STATIC_HOLDER_HPP
|
|
#define BOOST_FLYWEIGHT_STATIC_HOLDER_HPP
|
|
|
|
#if defined(_MSC_VER)
|
|
#pragma once
|
|
#endif
|
|
|
|
#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
|
|
#include <boost/flyweight/static_holder_fwd.hpp>
|
|
#include <boost/flyweight/holder_tag.hpp>
|
|
#include <boost/mpl/aux_/lambda_support.hpp>
|
|
|
|
/* Simplest holder storing the T object as a local static variable.
|
|
*/
|
|
|
|
namespace boost{
|
|
|
|
namespace flyweights{
|
|
|
|
template<typename C>
|
|
struct static_holder_class:holder_marker
|
|
{
|
|
static C& get()
|
|
{
|
|
static C c;
|
|
return c;
|
|
}
|
|
|
|
typedef static_holder_class type;
|
|
BOOST_MPL_AUX_LAMBDA_SUPPORT(1,static_holder_class,(C))
|
|
};
|
|
|
|
/* static_holder_class specifier */
|
|
|
|
struct static_holder:holder_marker
|
|
{
|
|
template<typename C>
|
|
struct apply
|
|
{
|
|
typedef static_holder_class<C> type;
|
|
};
|
|
};
|
|
|
|
} /* namespace flyweights */
|
|
|
|
} /* namespace boost */
|
|
|
|
#endif
|