diff options
Diffstat (limited to 'boost/multi_index/detail/raw_ptr.hpp')
-rw-r--r-- | boost/multi_index/detail/raw_ptr.hpp | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/boost/multi_index/detail/raw_ptr.hpp b/boost/multi_index/detail/raw_ptr.hpp new file mode 100644 index 0000000000..c32007435c --- /dev/null +++ b/boost/multi_index/detail/raw_ptr.hpp @@ -0,0 +1,52 @@ +/* Copyright 2003-2015 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/multi_index for library home page. + */ + +#ifndef BOOST_MULTI_INDEX_DETAIL_RAW_PTR_HPP +#define BOOST_MULTI_INDEX_DETAIL_RAW_PTR_HPP + +#if defined(_MSC_VER) +#pragma once +#endif + +#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */ +#include <boost/mpl/bool.hpp> +#include <boost/type_traits/is_same.hpp> + +namespace boost{ + +namespace multi_index{ + +namespace detail{ + +/* gets the underlying pointer of a pointer-like value */ + +template<typename RawPointer> +inline RawPointer raw_ptr(RawPointer const& p,mpl::true_) +{ + return p; +} + +template<typename RawPointer,typename Pointer> +inline RawPointer raw_ptr(Pointer const& p,mpl::false_) +{ + return p==Pointer(0)?0:&*p; +} + +template<typename RawPointer,typename Pointer> +inline RawPointer raw_ptr(Pointer const& p) +{ + return raw_ptr<RawPointer>(p,is_same<RawPointer,Pointer>()); +} + +} /* namespace multi_index::detail */ + +} /* namespace multi_index */ + +} /* namespace boost */ + +#endif |