115 lines
2.5 KiB
C++
115 lines
2.5 KiB
C++
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// Copyright Aleksey Gurtovoy 2000-2004
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// Copyright Jaap Suter 2003
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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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// Preprocessed version of "boost/mpl/shift_left.hpp" header
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// -- DO NOT modify by hand!
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namespace boost { namespace mpl {
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template<
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typename Tag1
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, typename Tag2
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, BOOST_MPL_AUX_NTTP_DECL(int, tag1_) = BOOST_MPL_AUX_MSVC_VALUE_WKND(Tag1)::value
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, BOOST_MPL_AUX_NTTP_DECL(int, tag2_) = BOOST_MPL_AUX_MSVC_VALUE_WKND(Tag2)::value
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>
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struct shift_left_impl
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: if_c<
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( tag1_ > tag2_ )
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, aux::cast2nd_impl< shift_left_impl< Tag1,Tag1 >,Tag1, Tag2 >
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, aux::cast1st_impl< shift_left_impl< Tag2,Tag2 >,Tag1, Tag2 >
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>::type
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{
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};
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/// for Digital Mars C++/compilers with no CTPS/TTP support
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template<> struct shift_left_impl< na,na >
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{
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template< typename U1, typename U2 > struct apply
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{
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typedef apply type;
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BOOST_STATIC_CONSTANT(int, value = 0);
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};
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};
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template<> struct shift_left_impl< na,integral_c_tag >
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{
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template< typename U1, typename U2 > struct apply
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{
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typedef apply type;
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BOOST_STATIC_CONSTANT(int, value = 0);
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};
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};
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template<> struct shift_left_impl< integral_c_tag,na >
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{
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template< typename U1, typename U2 > struct apply
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{
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typedef apply type;
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BOOST_STATIC_CONSTANT(int, value = 0);
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};
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};
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template< typename T > struct shift_left_tag
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{
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typedef typename T::tag type;
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};
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template<
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typename BOOST_MPL_AUX_NA_PARAM(N1)
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, typename BOOST_MPL_AUX_NA_PARAM(N2)
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>
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struct shift_left
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: aux::msvc_eti_base< typename apply_wrap2<
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shift_left_impl<
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typename shift_left_tag<N1>::type
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, typename shift_left_tag<N2>::type
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>
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, N1
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, N2
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>::type >::type
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{
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BOOST_MPL_AUX_LAMBDA_SUPPORT(2, shift_left, (N1, N2))
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};
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BOOST_MPL_AUX_NA_SPEC2(2, 2, shift_left)
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}}
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namespace boost { namespace mpl {
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namespace aux {
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template< typename T, typename Shift, T n, Shift s >
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struct shift_left_wknd
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{
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BOOST_STATIC_CONSTANT(T, value = (n << s));
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typedef integral_c< T,value > type;
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};
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}
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template<>
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struct shift_left_impl< integral_c_tag,integral_c_tag >
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{
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template< typename N, typename S > struct apply
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: aux::shift_left_wknd<
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typename N::value_type
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, typename S::value_type
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, N::value
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, S::value
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>::type
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{
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};
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};
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}}
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