forked from boostorg/fusion
Initial move from Spirit CVS
[SVN r34896]
This commit is contained in:
35
include/boost/fusion/iterator/detail/adapt_deref_traits.hpp
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35
include/boost/fusion/iterator/detail/adapt_deref_traits.hpp
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/*=============================================================================
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Copyright (c) 2001-2006 Joel de Guzman
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Use, modification and distribution is subject to the Boost Software
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License, Version 1.0. (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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#if !defined(FUSION_ADAPT_DEREF_TRAITS_05062005_0900)
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#define FUSION_ADAPT_DEREF_TRAITS_05062005_0900
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#include <boost/fusion/iterator/deref.hpp>
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namespace boost { namespace fusion { namespace detail
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{
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struct adapt_deref_traits
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{
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template <typename Iterator>
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struct apply
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{
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typedef typename
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result_of::deref<typename Iterator::first_type>::type
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type;
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static type
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call(Iterator const& i)
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{
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return *i.first;
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}
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};
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};
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}}}
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#endif
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29
include/boost/fusion/iterator/detail/adapt_value_traits.hpp
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29
include/boost/fusion/iterator/detail/adapt_value_traits.hpp
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/*=============================================================================
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Copyright (c) 2001-2006 Joel de Guzman
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Use, modification and distribution is subject to the Boost Software
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License, Version 1.0. (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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#if !defined(FUSION_ADAPT_VALUE_TRAITS_05062005_0859)
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#define FUSION_ADAPT_VALUE_TRAITS_05062005_0859
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#include <boost/fusion/iterator/value_of.hpp>
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namespace boost { namespace fusion { namespace detail
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{
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struct adapt_value_traits
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{
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template <typename Iterator>
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struct apply
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{
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typedef typename
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result_of::value_of<typename Iterator::first_type>::type
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type;
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};
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};
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}}}
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#endif
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103
include/boost/fusion/iterator/detail/advance.hpp
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103
include/boost/fusion/iterator/detail/advance.hpp
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/*=============================================================================
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Copyright (c) 2001-2006 Joel de Guzman
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Use, modification and distribution is subject to the Boost Software
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License, Version 1.0. (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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#if !defined(FUSION_ADVANCE_09172005_1149)
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#define FUSION_ADVANCE_09172005_1149
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#include <boost/mpl/int.hpp>
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#include <boost/mpl/if.hpp>
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#include <boost/mpl/eval_if.hpp>
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#include <boost/mpl/identity.hpp>
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#include <boost/fusion/iterator/next.hpp>
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#include <boost/fusion/iterator/prior.hpp>
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namespace boost { namespace fusion { namespace advance_detail
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{
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// Default advance implementation, perform next(i)
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// or prior(i) N times.
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template <typename Iterator, int N>
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struct forward;
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template <typename Iterator, int N>
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struct next_forward
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{
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typedef typename
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forward<
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typename result_of::next<Iterator>::type
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, N-1
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>::type
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type;
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};
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template <typename Iterator, int N>
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struct forward
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{
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typedef typename
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mpl::eval_if_c<
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(N == 0)
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, mpl::identity<Iterator>
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, next_forward<Iterator, N>
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>::type
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type;
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static type const&
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call(type const& i)
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{
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return i;
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}
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template <typename I>
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static type
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call(I const& i)
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{
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return call(fusion::next(i));
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}
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};
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template <typename Iterator, int N>
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struct backward;
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template <typename Iterator, int N>
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struct next_backward
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{
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typedef typename
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backward<
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typename result_of::prior<Iterator>::type
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, N+1
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>::type
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type;
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};
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template <typename Iterator, int N>
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struct backward
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{
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typedef typename
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mpl::eval_if_c<
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(N == 0)
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, mpl::identity<Iterator>
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, next_backward<Iterator, N>
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>::type
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type;
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static type const&
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call(type const& i)
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{
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return i;
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}
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template <typename I>
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static type
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call(I const& i)
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{
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return call(fusion::prior(i));
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}
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};
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}}}
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#endif
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66
include/boost/fusion/iterator/detail/distance.hpp
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66
include/boost/fusion/iterator/detail/distance.hpp
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/*=============================================================================
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Copyright (c) 2001-2006 Joel de Guzman
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Use, modification and distribution is subject to the Boost Software
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License, Version 1.0. (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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#if !defined(FUSION_DISTANCE_09172005_0730)
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#define FUSION_DISTANCE_09172005_0730
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#include <boost/mpl/int.hpp>
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#include <boost/mpl/if.hpp>
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#include <boost/mpl/eval_if.hpp>
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#include <boost/mpl/next.hpp>
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#include <boost/mpl/identity.hpp>
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#include <boost/fusion/iterator/next.hpp>
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#include <boost/fusion/iterator/equal_to.hpp>
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namespace boost { namespace fusion { namespace distance_detail
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{
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// Default distance implementation, linear
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// search for the Last iterator.
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template <typename First, typename Last>
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struct linear_distance;
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template <typename First, typename Last>
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struct next_distance
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{
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typedef typename
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mpl::next<
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typename linear_distance<
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typename result_of::next<First>::type
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, Last
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>::type
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>::type
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type;
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};
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template <typename First, typename Last>
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struct linear_distance
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: mpl::eval_if<
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result_of::equal_to<First, Last>
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, mpl::identity<mpl::int_<0> >
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, next_distance<First, Last>
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>::type
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{
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typedef typename
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mpl::eval_if<
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result_of::equal_to<First, Last>
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, mpl::identity<mpl::int_<0> >
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, next_distance<First, Last>
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>::type
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type;
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static type
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call(First const&, Last const&)
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{
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static type result;
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return result;
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}
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};
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}}}
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#endif
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