src/thirdparty/boost_1_47_0/boost/mpl/aux_/preprocessed/bcc_pre590/shift_left.hpp

   1
   2 // Copyright Aleksey Gurtovoy 2000-2004
   3 // Copyright Jaap Suter 2003
   4 //
   5 // Distributed under the Boost Software License, Version 1.0.
   6 // (See accompanying file LICENSE_1_0.txt or copy at
   7 // http://www.boost.org/LICENSE_1_0.txt)
   8 //
   9
  10 // *Preprocessed* version of the main "shift_left.hpp" header
  11 // -- DO NOT modify by hand!
  12
  13 namespace boost { namespace mpl {
  14
  15 template<
  16       typename Tag1
  17     , typename Tag2
  18     >
  19 struct shift_left_impl
  20     : if_c<
  21           ( BOOST_MPL_AUX_NESTED_VALUE_WKND(int, Tag1)
  22               > BOOST_MPL_AUX_NESTED_VALUE_WKND(int, Tag2)
  23             )
  24
  25         , aux::cast2nd_impl< shift_left_impl< Tag1,Tag1 >,Tag1, Tag2 >
  26         , aux::cast1st_impl< shift_left_impl< Tag2,Tag2 >,Tag1, Tag2 >
  27         >::type
  28 {
  29 };
  30
  31 /// for Digital Mars C++/compilers with no CTPS/TTP support
  32 template<> struct shift_left_impl< na,na >
  33 {
  34     template< typename U1, typename U2 > struct apply
  35     {
  36         typedef apply type;
  37         BOOST_STATIC_CONSTANT(int, value  = 0);
  38     };
  39 };
  40
  41 template< typename Tag > struct shift_left_impl< na,Tag >
  42 {
  43     template< typename U1, typename U2 > struct apply
  44     {
  45         typedef apply type;
  46         BOOST_STATIC_CONSTANT(int, value  = 0);
  47     };
  48 };
  49
  50 template< typename Tag > struct shift_left_impl< Tag,na >
  51 {
  52     template< typename U1, typename U2 > struct apply
  53     {
  54         typedef apply type;
  55         BOOST_STATIC_CONSTANT(int, value  = 0);
  56     };
  57 };
  58
  59 template< typename T > struct shift_left_tag
  60 {
  61     typedef typename T::tag type;
  62 };
  63
  64 template<
  65       typename BOOST_MPL_AUX_NA_PARAM(N1)
  66     , typename BOOST_MPL_AUX_NA_PARAM(N2)
  67     >
  68 struct shift_left
  69
  70     : shift_left_impl<
  71           typename shift_left_tag<N1>::type
  72         , typename shift_left_tag<N2>::type
  73         >::template apply< N1,N2 >::type
  74 {
  75     BOOST_MPL_AUX_LAMBDA_SUPPORT(2, shift_left, (N1, N2))
  76
  77 };
  78
  79 BOOST_MPL_AUX_NA_SPEC2(2, 2, shift_left)
  80
  81 }}
  82
  83 namespace boost { namespace mpl {
  84 template<>
  85 struct shift_left_impl< integral_c_tag,integral_c_tag >
  86 {
  87     template< typename N, typename S > struct apply
  88
  89         : integral_c<
  90               typename N::value_type
  91             , ( BOOST_MPL_AUX_VALUE_WKND(N)::value
  92                   << BOOST_MPL_AUX_VALUE_WKND(S)::value
  93                 )
  94             >
  95     {
  96     };
  97 };
  98
  99 }}