53 lines
1.2 KiB
Plaintext
53 lines
1.2 KiB
Plaintext
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/* Copyright 2003-2015 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/multi_index for library home page.
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*/
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#ifndef BOOST_MULTI_INDEX_DETAIL_RAW_PTR_HPP
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#define BOOST_MULTI_INDEX_DETAIL_RAW_PTR_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/mpl/bool.hpp>
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#include <boost/type_traits/is_same.hpp>
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namespace boost{
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namespace multi_index{
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namespace detail{
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/* gets the underlying pointer of a pointer-like value */
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template<typename RawPointer>
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inline RawPointer raw_ptr(RawPointer const& p,mpl::true_)
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{
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return p;
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}
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template<typename RawPointer,typename Pointer>
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inline RawPointer raw_ptr(Pointer const& p,mpl::false_)
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{
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return p==Pointer(0)?0:&*p;
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}
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template<typename RawPointer,typename Pointer>
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inline RawPointer raw_ptr(Pointer const& p)
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{
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return raw_ptr<RawPointer>(p,is_same<RawPointer,Pointer>());
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}
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} /* namespace multi_index::detail */
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} /* namespace multi_index */
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} /* namespace boost */
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#endif
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