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single_element_iter.hpp - Hosted on DriveHQ Cloud IT Platform
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路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\mpl\aux_\single_element_iter.hpp
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#ifndef BOOST_MPL_AUX_SINGLE_ELEMENT_ITER_HPP_INCLUDED #define BOOST_MPL_AUX_SINGLE_ELEMENT_ITER_HPP_INCLUDED // Copyright Aleksey Gurtovoy 2000-2004 // // 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/mpl for documentation. // $Source$ // $Date: 2004-11-27 20:58:27 -0500 (Sat, 27 Nov 2004) $ // $Revision: 26325 $ #include
#include
#include
#include
#include
#include
#include
#include
#include
namespace boost { namespace mpl { #if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) namespace aux { template< typename T, BOOST_MPL_AUX_NTTP_DECL(int, is_last_) > struct sel_iter; template< typename T > struct sel_iter
{ typedef random_access_iterator_tag category; typedef sel_iter
next; typedef T type; }; template< typename T > struct sel_iter
{ typedef random_access_iterator_tag category; typedef sel_iter
prior; }; } // namespace aux template< typename T, BOOST_MPL_AUX_NTTP_DECL(int, is_last_), typename Distance > struct advance< aux::sel_iter
,Distance> { typedef aux::sel_iter< T , ( is_last_ + BOOST_MPL_AUX_NESTED_VALUE_WKND(int, Distance) ) > type; }; template< typename T , BOOST_MPL_AUX_NTTP_DECL(int, l1) , BOOST_MPL_AUX_NTTP_DECL(int, l2) > struct distance< aux::sel_iter
, aux::sel_iter
> : int_<( l2 - l1 )> { }; #else namespace aux { struct sel_iter_tag; template< typename T, BOOST_MPL_AUX_NTTP_DECL(int, is_last_) > struct sel_iter { enum { pos_ = is_last_ }; typedef aux::sel_iter_tag tag; typedef random_access_iterator_tag category; typedef sel_iter
next; typedef sel_iter
prior; typedef T type; }; } // namespace aux template<> struct advance_impl
{ template< typename Iterator, typename N > struct apply { enum { pos_ = Iterator::pos_, n_ = N::value }; typedef aux::sel_iter< typename Iterator::type , (pos_ + n_) > type; }; }; template<> struct distance_impl
{ template< typename Iter1, typename Iter2 > struct apply { enum { pos1_ = Iter1::pos_, pos2_ = Iter2::pos_ }; typedef int_<( pos2_ - pos1_ )> type; BOOST_STATIC_CONSTANT(int, value = ( pos2_ - pos1_ )); }; }; #endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION }} #endif // BOOST_MPL_AUX_SINGLE_ELEMENT_ITER_HPP_INCLUDED
single_element_iter.hpp
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