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64 lines
2.1 KiB
C++
64 lines
2.1 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_LINK_MODE_HPP
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#define BOOST_INTRUSIVE_LINK_MODE_HPP
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#if defined(BOOST_HAS_PRAGMA_ONCE)
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# pragma once
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#endif
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namespace boost {
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namespace intrusive {
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//!This enumeration defines the type of value_traits that can be defined
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//!for Boost.Intrusive containers
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enum link_mode_type{
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//!If this linking policy is specified in a value_traits class
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//!as the link_mode, containers
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//!configured with such value_traits won't set the hooks
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//!of the erased values to a default state. Containers also won't
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//!check that the hooks of the new values are default initialized.
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normal_link,
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//!If this linking policy is specified in a value_traits class
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//!as the link_mode, containers
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//!configured with such value_traits will set the hooks
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//!of the erased values to a default state. Containers also will
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//!check that the hooks of the new values are default initialized.
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safe_link,
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//!Same as "safe_link" but the user type is an auto-unlink
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//!type, so the containers with constant-time size features won't be
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//!compatible with value_traits configured with this policy.
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//!Containers also know that the a value can be silently erased from
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//!the container without using any function provided by the containers.
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auto_unlink
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};
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#ifndef BOOST_INTRUSIVE_DOXYGEN_INVOKED
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template <link_mode_type link_mode>
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struct is_safe_autounlink
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{
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static const bool value =
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(int)link_mode == (int)auto_unlink ||
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(int)link_mode == (int)safe_link;
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};
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#endif //BOOST_INTRUSIVE_DOXYGEN_INVOKED
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} //namespace intrusive
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} //namespace boost
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#endif //BOOST_INTRUSIVE_LINK_MODE_HPP
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