[857] | 1 |
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| 2 | #if !defined(BOOST_PP_IS_ITERATING)
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| 3 |
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| 4 | ///// header body
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| 5 |
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| 6 | #ifndef BOOST_MPL_AUX_LAMBDA_NO_CTPS_HPP_INCLUDED
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| 7 | #define BOOST_MPL_AUX_LAMBDA_NO_CTPS_HPP_INCLUDED
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| 8 |
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| 9 | // Copyright Aleksey Gurtovoy 2000-2004
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| 10 | //
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| 11 | // Distributed under the Boost Software License, Version 1.0.
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| 12 | // (See accompanying file LICENSE_1_0.txt or copy at
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| 13 | // http://www.boost.org/LICENSE_1_0.txt)
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| 14 | //
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| 15 | // See http://www.boost.org/libs/mpl for documentation.
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| 16 |
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| 17 | // $Source: /cvsroot/boost/boost/boost/mpl/aux_/lambda_no_ctps.hpp,v $
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| 18 | // $Date: 2004/09/07 12:24:48 $
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| 19 | // $Revision: 1.14 $
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| 20 |
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| 21 | #if !defined(BOOST_MPL_PREPROCESSING_MODE)
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| 22 | # include <boost/mpl/lambda_fwd.hpp>
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| 23 | # include <boost/mpl/bind_fwd.hpp>
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| 24 | # include <boost/mpl/protect.hpp>
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| 25 | # include <boost/mpl/is_placeholder.hpp>
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| 26 | # include <boost/mpl/if.hpp>
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| 27 | # include <boost/mpl/identity.hpp>
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| 28 | # include <boost/mpl/bool.hpp>
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| 29 | # include <boost/mpl/aux_/na_spec.hpp>
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| 30 | # include <boost/mpl/aux_/lambda_support.hpp>
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| 31 | # include <boost/mpl/aux_/template_arity.hpp>
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| 32 | # include <boost/mpl/aux_/value_wknd.hpp>
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| 33 | #endif
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| 34 |
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| 35 | #include <boost/mpl/aux_/config/use_preprocessed.hpp>
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| 36 |
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| 37 | #if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \
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| 38 | && !defined(BOOST_MPL_PREPROCESSING_MODE)
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| 39 |
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| 40 | # define BOOST_MPL_PREPROCESSED_HEADER lambda_no_ctps.hpp
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| 41 | # include <boost/mpl/aux_/include_preprocessed.hpp>
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| 42 |
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| 43 | #else
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| 44 |
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| 45 | # include <boost/mpl/limits/arity.hpp>
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| 46 | # include <boost/mpl/aux_/preprocessor/params.hpp>
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| 47 | # include <boost/mpl/aux_/preprocessor/default_params.hpp>
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| 48 | # include <boost/mpl/aux_/preprocessor/repeat.hpp>
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| 49 | # include <boost/mpl/aux_/preprocessor/enum.hpp>
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| 50 | # include <boost/mpl/aux_/config/msvc.hpp>
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| 51 | # include <boost/mpl/aux_/config/workaround.hpp>
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| 52 |
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| 53 | # include <boost/preprocessor/comma_if.hpp>
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| 54 | # include <boost/preprocessor/iterate.hpp>
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| 55 | # include <boost/preprocessor/inc.hpp>
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| 56 | # include <boost/preprocessor/cat.hpp>
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| 57 |
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| 58 | namespace boost { namespace mpl {
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| 59 |
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| 60 | # define AUX778076_LAMBDA_PARAMS(i_, param) \
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| 61 | BOOST_MPL_PP_PARAMS(i_, param) \
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| 62 | /**/
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| 63 |
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| 64 | namespace aux {
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| 65 |
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| 66 | #define n_ BOOST_MPL_LIMIT_METAFUNCTION_ARITY
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| 67 | template<
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| 68 | BOOST_MPL_PP_DEFAULT_PARAMS(n_,bool C,false)
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| 69 | >
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| 70 | struct lambda_or
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| 71 | : true_
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| 72 | {
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| 73 | };
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| 74 |
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| 75 | template<>
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| 76 | struct lambda_or< BOOST_MPL_PP_ENUM(n_,false) >
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| 77 | : false_
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| 78 | {
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| 79 | };
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| 80 | #undef n_
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| 81 |
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| 82 | template< typename Arity > struct lambda_impl
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| 83 | {
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| 84 | template< typename T, typename Tag, typename Protect > struct result_
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| 85 | {
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| 86 | typedef T type;
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| 87 | typedef is_placeholder<T> is_le;
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| 88 | };
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| 89 | };
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| 90 |
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| 91 | #define BOOST_PP_ITERATION_PARAMS_1 \
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| 92 | (3,(1, BOOST_MPL_LIMIT_METAFUNCTION_ARITY, <boost/mpl/aux_/lambda_no_ctps.hpp>))
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| 93 | #include BOOST_PP_ITERATE()
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| 94 |
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| 95 | } // namespace aux
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| 96 |
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| 97 | template<
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| 98 | typename T
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| 99 | , typename Tag
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| 100 | , typename Protect
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| 101 | >
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| 102 | struct lambda
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| 103 | {
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| 104 | /// Metafunction forwarding confuses MSVC 6.x
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| 105 | typedef typename aux::template_arity<T>::type arity_;
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| 106 | typedef typename aux::lambda_impl<arity_>
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| 107 | ::template result_< T,Tag,Protect > l_;
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| 108 |
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| 109 | typedef typename l_::type type;
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| 110 | typedef typename l_::is_le is_le;
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| 111 |
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| 112 | BOOST_MPL_AUX_LAMBDA_SUPPORT(3, lambda, (T, Tag, Protect))
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| 113 | };
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| 114 |
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| 115 | BOOST_MPL_AUX_NA_SPEC2(1, 3, lambda)
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| 116 |
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| 117 | template<
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| 118 | typename T
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| 119 | >
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| 120 | struct is_lambda_expression
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| 121 | : lambda<T>::is_le
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| 122 | {
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| 123 | };
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| 124 |
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| 125 | # undef AUX778076_LAMBDA_PARAMS
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| 126 |
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| 127 | }}
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| 128 |
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| 129 | #endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
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| 130 | #endif // BOOST_MPL_AUX_LAMBDA_NO_CTPS_HPP_INCLUDED
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| 131 |
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| 132 | ///// iteration, depth == 1
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| 133 |
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| 134 | #else
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| 135 |
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| 136 | #define i_ BOOST_PP_FRAME_ITERATION(1)
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| 137 |
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| 138 | # define AUX778076_LAMBDA_TYPEDEF(unused, i_, F) \
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| 139 | typedef lambda< \
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| 140 | typename F::BOOST_PP_CAT(arg,BOOST_PP_INC(i_)) \
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| 141 | , Tag \
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| 142 | , false_ \
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| 143 | > BOOST_PP_CAT(l,BOOST_PP_INC(i_)); \
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| 144 | /**/
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| 145 |
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| 146 | # define AUX778076_IS_LE_TYPEDEF(unused, i_, unused2) \
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| 147 | typedef typename BOOST_PP_CAT(l,BOOST_PP_INC(i_))::is_le \
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| 148 | BOOST_PP_CAT(is_le,BOOST_PP_INC(i_)); \
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| 149 | /**/
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| 150 |
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| 151 | # define AUX778076_IS_LAMBDA_EXPR(unused, i_, unused2) \
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| 152 | BOOST_PP_COMMA_IF(i_) \
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| 153 | BOOST_MPL_AUX_MSVC_VALUE_WKND(BOOST_PP_CAT(is_le,BOOST_PP_INC(i_)))::value \
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| 154 | /**/
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| 155 |
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| 156 | # define AUX778076_LAMBDA_RESULT(unused, i_, unused2) \
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| 157 | , typename BOOST_PP_CAT(l,BOOST_PP_INC(i_))::type \
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| 158 | /**/
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| 159 |
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| 160 | template<> struct lambda_impl< int_<i_> >
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| 161 | {
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| 162 | template< typename F, typename Tag, typename Protect > struct result_
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| 163 | {
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| 164 | BOOST_MPL_PP_REPEAT(i_, AUX778076_LAMBDA_TYPEDEF, F)
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| 165 | BOOST_MPL_PP_REPEAT(i_, AUX778076_IS_LE_TYPEDEF, unused)
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| 166 |
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| 167 | typedef aux::lambda_or<
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| 168 | BOOST_MPL_PP_REPEAT(i_, AUX778076_IS_LAMBDA_EXPR, unused)
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| 169 | > is_le;
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| 170 |
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| 171 | typedef BOOST_PP_CAT(bind,i_)<
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| 172 | typename F::rebind
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| 173 | BOOST_MPL_PP_REPEAT(i_, AUX778076_LAMBDA_RESULT, unused)
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| 174 | > bind_;
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| 175 |
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| 176 | typedef typename if_<
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| 177 | is_le
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| 178 | , if_< Protect, mpl::protect<bind_>, bind_ >
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| 179 | , identity<F>
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| 180 | >::type type_;
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| 181 |
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| 182 | typedef typename type_::type type;
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| 183 | };
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| 184 | };
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| 185 |
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| 186 | # undef AUX778076_LAMBDA_RESULT
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| 187 | # undef AUX778076_IS_LAMBDA_EXPR
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| 188 | # undef AUX778076_IS_LE_TYPEDEF
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| 189 | # undef AUX778076_LAMBDA_TYPEDEF
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| 190 |
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| 191 | #undef i_
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| 192 |
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| 193 | #endif // BOOST_PP_IS_ITERATING
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