1 2 // Copyright Aleksey Gurtovoy 2000-2004 3 // 4 // Distributed under the Boost Software License, Version 1.0. 5 // (See accompanying file LICENSE_1_0.txt or copy at 6 // http://www.boost.org/LICENSE_1_0.txt) 7 // 8 9 // Preprocessed version of "boost/mpl/plus.hpp" header 10 // -- DO NOT modify by hand! 11 12 namespace boost { namespace mpl { 13 14 template< 15 typename Tag1 16 , typename Tag2 17 > 18 struct plus_impl 19 : if_c< 20 ( BOOST_MPL_AUX_NESTED_VALUE_WKND(int, Tag1) 21 > BOOST_MPL_AUX_NESTED_VALUE_WKND(int, Tag2) 22 ) 23 24 , aux::cast2nd_impl< plus_impl< Tag1,Tag1 >,Tag1, Tag2 > 25 , aux::cast1st_impl< plus_impl< Tag2,Tag2 >,Tag1, Tag2 > 26 >::type 27 { 28 }; 29 30 /// for Digital Mars C++/compilers with no CTPS/TTP support 31 template<> struct plus_impl< na,na > 32 { 33 template< typename U1, typename U2 > struct apply 34 { 35 typedef apply type; 36 BOOST_STATIC_CONSTANT(int, value = 0); 37 }; 38 }; 39 40 template<> struct plus_impl< na,integral_c_tag > 41 { 42 template< typename U1, typename U2 > struct apply 43 { 44 typedef apply type; 45 BOOST_STATIC_CONSTANT(int, value = 0); 46 }; 47 }; 48 49 template<> struct plus_impl< integral_c_tag,na > 50 { 51 template< typename U1, typename U2 > struct apply 52 { 53 typedef apply type; 54 BOOST_STATIC_CONSTANT(int, value = 0); 55 }; 56 }; 57 58 template< typename T > struct plus_tag 59 { 60 typedef typename T::tag type; 61 }; 62 63 /// forward declaration 64 65 template< 66 typename BOOST_MPL_AUX_NA_PARAM(N1) 67 , typename BOOST_MPL_AUX_NA_PARAM(N2) 68 > 69 struct plus2; 70 71 template< 72 typename BOOST_MPL_AUX_NA_PARAM(N1) 73 , typename BOOST_MPL_AUX_NA_PARAM(N2) 74 , typename N3 = na, typename N4 = na, typename N5 = na 75 > 76 struct plus 77 78 : if_< 79 80 is_na<N3> 81 , plus2< N1,N2 > 82 , plus< 83 plus2< N1,N2 > 84 , N3, N4, N5 85 > 86 >::type 87 88 { 89 BOOST_MPL_AUX_LAMBDA_SUPPORT( 90 5 91 , plus 92 , ( N1, N2, N3, N4, N5 ) 93 ) 94 }; 95 96 template< 97 typename N1 98 , typename N2 99 > 100 struct plus2 101 : plus_impl< 102 typename plus_tag<N1>::type 103 , typename plus_tag<N2>::type 104 >::template apply< N1,N2 >::type 105 { 106 BOOST_MPL_AUX_LAMBDA_SUPPORT(2, plus2, (N1, N2)) 107 108 }; 109 110 BOOST_MPL_AUX_NA_SPEC2(2, 5, plus) 111 112 }} 113 114 namespace boost { namespace mpl { 115 template<> 116 struct plus_impl< integral_c_tag,integral_c_tag > 117 { 118 template< typename N1, typename N2 > struct apply 119 120 : integral_c< 121 typename aux::largest_int< 122 typename N1::value_type 123 , typename N2::value_type 124 >::type 125 , ( BOOST_MPL_AUX_VALUE_WKND(N1)::value 126 + BOOST_MPL_AUX_VALUE_WKND(N2)::value 127 ) 128 > 129 { 130 }; 131 }; 132 133 }} 134