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