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59 lines
2.2 KiB
C++
59 lines
2.2 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2006-2013
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//
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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/intrusive for documentation.
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//
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/////////////////////////////////////////////////////////////////////////////
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#ifndef BOOST_INTRUSIVE_TRIVIAL_VALUE_TRAITS_HPP
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#define BOOST_INTRUSIVE_TRIVIAL_VALUE_TRAITS_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/intrusive/detail/config_begin.hpp>
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#include <boost/intrusive/intrusive_fwd.hpp>
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#include <boost/intrusive/link_mode.hpp>
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#include <boost/intrusive/pointer_traits.hpp>
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namespace boost {
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namespace intrusive {
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//!This value traits template is used to create value traits
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//!from user defined node traits where value_traits::value_type and
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//!node_traits::node should be equal
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template<class NodeTraits, link_mode_type LinkMode
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#ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED
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= safe_link
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#endif
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>
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struct trivial_value_traits
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{
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typedef NodeTraits node_traits;
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typedef typename node_traits::node_ptr node_ptr;
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typedef typename node_traits::const_node_ptr const_node_ptr;
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typedef typename node_traits::node value_type;
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typedef node_ptr pointer;
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typedef const_node_ptr const_pointer;
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static const link_mode_type link_mode = LinkMode;
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static node_ptr to_node_ptr (value_type &value)
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{ return pointer_traits<node_ptr>::pointer_to(value); }
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static const_node_ptr to_node_ptr (const value_type &value)
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{ return pointer_traits<const_node_ptr>::pointer_to(value); }
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static const pointer & to_value_ptr(const node_ptr &n) { return n; }
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static const const_pointer &to_value_ptr(const const_node_ptr &n) { return n; }
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};
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} //namespace intrusive
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} //namespace boost
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#include <boost/intrusive/detail/config_end.hpp>
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#endif //BOOST_INTRUSIVE_TRIVIAL_VALUE_TRAITS_HPP
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