preprocessed/no_ctps/equal_to.hpp

0001
0002 // Copyright Aleksey Gurtovoy 2000-2004
0003 //
0004 // Distributed under the Boost Software License, Version 1.0.
0005 // (See accompanying file LICENSE_1_0.txt or copy at
0006 // http://www.boost.org/LICENSE_1_0.txt)
0007 //
0008
0009 // Preprocessed version of "boost/mpl/equal_to.hpp" header
0010 // -- DO NOT modify by hand!
0011
0012 namespace boost { namespace mpl {
0013
0014 template<
0015       typename Tag1
0016     , typename Tag2
0017     >
0018 struct equal_to_impl
0019     : if_c<
0020           ( BOOST_MPL_AUX_NESTED_VALUE_WKND(int, Tag1)
0021               > BOOST_MPL_AUX_NESTED_VALUE_WKND(int, Tag2)
0022             )
0023
0024         , aux::cast2nd_impl< equal_to_impl< Tag1,Tag1 >,Tag1, Tag2 >
0025         , aux::cast1st_impl< equal_to_impl< Tag2,Tag2 >,Tag1, Tag2 >
0026         >::type
0027 {
0028 };
0029
0030 /// for Digital Mars C++/compilers with no CTPS/TTP support
0031 template<> struct equal_to_impl< na,na >
0032 {
0033     template< typename U1, typename U2 > struct apply
0034     {
0035         typedef apply type;
0036         BOOST_STATIC_CONSTANT(int, value  = 0);
0037     };
0038 };
0039
0040 template<> struct equal_to_impl< na,integral_c_tag >
0041 {
0042     template< typename U1, typename U2 > struct apply
0043     {
0044         typedef apply type;
0045         BOOST_STATIC_CONSTANT(int, value  = 0);
0046     };
0047 };
0048
0049 template<> struct equal_to_impl< integral_c_tag,na >
0050 {
0051     template< typename U1, typename U2 > struct apply
0052     {
0053         typedef apply type;
0054         BOOST_STATIC_CONSTANT(int, value  = 0);
0055     };
0056 };
0057
0058 template< typename T > struct equal_to_tag
0059 {
0060     typedef typename T::tag type;
0061 };
0062
0063 template<
0064       typename BOOST_MPL_AUX_NA_PARAM(N1)
0065     , typename BOOST_MPL_AUX_NA_PARAM(N2)
0066     >
0067 struct equal_to
0068
0069     : equal_to_impl<
0070           typename equal_to_tag<N1>::type
0071         , typename equal_to_tag<N2>::type
0072         >::template apply< N1,N2 >::type
0073 {
0074     BOOST_MPL_AUX_LAMBDA_SUPPORT(2, equal_to, (N1, N2))
0075
0076 };
0077
0078 BOOST_MPL_AUX_NA_SPEC2(2, 2, equal_to)
0079
0080 }}
0081
0082 namespace boost { namespace mpl {
0083
0084 template<>
0085 struct equal_to_impl< integral_c_tag,integral_c_tag >
0086 {
0087     template< typename N1, typename N2 > struct apply
0088
0089         : bool_< ( BOOST_MPL_AUX_VALUE_WKND(N1)::value  == BOOST_MPL_AUX_VALUE_WKND(N2)::value ) >
0090     {
0091     };
0092 };
0093
0094 }}