ceph/src/boost/boost/mpl/aux_/full_lambda.hpp

   1
   2 #if !defined(BOOST_PP_IS_ITERATING)
   3
   4 ///// header body
   5
   6 #ifndef BOOST_MPL_AUX_FULL_LAMBDA_HPP_INCLUDED
   7 #define BOOST_MPL_AUX_FULL_LAMBDA_HPP_INCLUDED
   8
   9 // Copyright Aleksey Gurtovoy 2001-2004
  10 //
  11 // Distributed under the Boost Software License, Version 1.0.
  12 // (See accompanying file LICENSE_1_0.txt or copy at
  13 // http://www.boost.org/LICENSE_1_0.txt)
  14 //
  15 // See http://www.boost.org/libs/mpl for documentation.
  16
  17 // $Id$
  18 // $Date$
  19 // $Revision$
  20
  21 #if !defined(BOOST_MPL_PREPROCESSING_MODE)
  22 #   include <boost/mpl/lambda_fwd.hpp>
  23 #   include <boost/mpl/bind_fwd.hpp>
  24 #   include <boost/mpl/protect.hpp>
  25 #   include <boost/mpl/quote.hpp>
  26 #   include <boost/mpl/arg.hpp>
  27 #   include <boost/mpl/bool.hpp>
  28 #   include <boost/mpl/int_fwd.hpp>
  29 #   include <boost/mpl/aux_/template_arity.hpp>
  30 #   include <boost/mpl/aux_/na_spec.hpp>
  31 #   include <boost/mpl/aux_/config/ttp.hpp>
  32 #   if defined(BOOST_MPL_CFG_EXTENDED_TEMPLATE_PARAMETERS_MATCHING)
  33 #       include <boost/mpl/if.hpp>
  34 #   endif
  35 #endif
  36
  37 #include <boost/mpl/aux_/lambda_arity_param.hpp>
  38 #include <boost/mpl/aux_/config/use_preprocessed.hpp>
  39
  40 #if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \
  41     && !defined(BOOST_MPL_PREPROCESSING_MODE)
  42
  43 #   define BOOST_MPL_PREPROCESSED_HEADER full_lambda.hpp
  44 #   include <boost/mpl/aux_/include_preprocessed.hpp>
  45
  46 #else
  47
  48 #   include <boost/mpl/limits/arity.hpp>
  49 #   include <boost/mpl/aux_/preprocessor/default_params.hpp>
  50 #   include <boost/mpl/aux_/preprocessor/params.hpp>
  51 #   include <boost/mpl/aux_/preprocessor/enum.hpp>
  52 #   include <boost/mpl/aux_/preprocessor/repeat.hpp>
  53 #   include <boost/mpl/aux_/config/dmc_ambiguous_ctps.hpp>
  54
  55 #   include <boost/preprocessor/iterate.hpp>
  56 #   include <boost/preprocessor/comma_if.hpp>
  57 #   include <boost/preprocessor/inc.hpp>
  58 #   include <boost/preprocessor/cat.hpp>
  59
  60 namespace boost { namespace mpl {
  61
  62 // local macros, #undef-ined at the end of the header
  63 #   define AUX778076_LAMBDA_PARAMS(i_, param) \
  64     BOOST_MPL_PP_PARAMS(i_, param) \
  65     /**/
  66
  67 #   define AUX778076_BIND_PARAMS(param) \
  68     BOOST_MPL_PP_PARAMS( \
  69           BOOST_MPL_LIMIT_METAFUNCTION_ARITY \
  70         , param \
  71         ) \
  72     /**/
  73
  74 #   define AUX778076_BIND_N_PARAMS(i_, param) \
  75     BOOST_PP_COMMA_IF(i_) \
  76     BOOST_MPL_PP_PARAMS(i_, param) \
  77     /**/
  78
  79 #   define AUX778076_ARITY_PARAM(param) \
  80     BOOST_MPL_AUX_LAMBDA_ARITY_PARAM(param) \
  81     /**/
  82
  83
  84 #define n_ BOOST_MPL_LIMIT_METAFUNCTION_ARITY
  85 namespace aux {
  86
  87 template<
  88       BOOST_MPL_PP_DEFAULT_PARAMS(n_,bool C,false)
  89     >
  90 struct lambda_or
  91     : true_
  92 {
  93 };
  94
  95 template<>
  96 struct lambda_or< BOOST_MPL_PP_ENUM(n_,false) >
  97     : false_
  98 {
  99 };
 100
 101 } // namespace aux
 102 #undef n_
 103
 104 template<
 105       typename T
 106     , typename Tag
 107     AUX778076_ARITY_PARAM(typename Arity)
 108     >
 109 struct lambda
 110 {
 111     typedef false_ is_le;
 112     typedef T result_;
 113     typedef T type;
 114 };
 115
 116 template<
 117       typename T
 118     >
 119 struct is_lambda_expression
 120     : lambda<T>::is_le
 121 {
 122 };
 123
 124
 125 template< int N, typename Tag >
 126 struct lambda< arg<N>,Tag AUX778076_ARITY_PARAM(int_<-1>) >
 127 {
 128     typedef true_ is_le;
 129     typedef mpl::arg<N> result_; // qualified for the sake of MIPSpro 7.41
 130     typedef mpl::protect<result_> type;
 131 };
 132
 133
 134 #define BOOST_PP_ITERATION_PARAMS_1 \
 135     (3,(0, BOOST_MPL_LIMIT_METAFUNCTION_ARITY, <boost/mpl/aux_/full_lambda.hpp>))
 136 #include BOOST_PP_ITERATE()
 137
 138 /// special case for 'protect'
 139 template< typename T, typename Tag >
 140 struct lambda< mpl::protect<T>,Tag AUX778076_ARITY_PARAM(int_<1>) >
 141 {
 142     typedef false_ is_le;
 143     typedef mpl::protect<T> result_;
 144     typedef result_ type;
 145 };
 146
 147 /// specializations for the main 'bind' form
 148 template<
 149       typename F, AUX778076_BIND_PARAMS(typename T)
 150     , typename Tag
 151     >
 152 struct lambda<
 153           bind<F,AUX778076_BIND_PARAMS(T)>
 154         , Tag
 155         AUX778076_ARITY_PARAM(int_<BOOST_PP_INC(BOOST_MPL_LIMIT_METAFUNCTION_ARITY)>)
 156         >
 157 {
 158     typedef false_ is_le;
 159     typedef bind<F, AUX778076_BIND_PARAMS(T)> result_;
 160     typedef result_ type;
 161 };
 162
 163
 164 #if defined(BOOST_MPL_CFG_EXTENDED_TEMPLATE_PARAMETERS_MATCHING)
 165
 166 template<
 167       typename F
 168     , typename Tag1
 169     , typename Tag2
 170     , typename Arity
 171     >
 172 struct lambda<
 173           lambda<F,Tag1,Arity>
 174         , Tag2
 175         , int_<3>
 176         >
 177 {
 178     typedef lambda< F,Tag2 > l1;
 179     typedef lambda< Tag1,Tag2 > l2;
 180
 181     typedef typename l1::is_le is_le;
 182     typedef bind1< quote1<aux::template_arity>, typename l1::result_ > arity_;
 183     typedef lambda< typename if_<is_le,arity_,Arity>::type,Tag2 > l3;
 184
 185     typedef aux::le_result3<is_le, Tag2, mpl::lambda, l1, l2, l3> le_result_;
 186     typedef typename le_result_::result_ result_;
 187     typedef typename le_result_::type type;
 188 };
 189
 190 #elif !defined(BOOST_MPL_CFG_DMC_AMBIGUOUS_CTPS)
 191
 192 /// workaround for MWCW 8.3+/EDG < 303, leads to ambiguity on Digital Mars
 193 template<
 194       typename F, typename Tag1, typename Tag2
 195     >
 196 struct lambda<
 197           lambda< F,Tag1 >
 198         , Tag2
 199         >
 200 {
 201     typedef lambda< F,Tag2 > l1;
 202     typedef lambda< Tag1,Tag2 > l2;
 203
 204     typedef typename l1::is_le is_le;
 205     typedef aux::le_result2<is_le, Tag2, mpl::lambda, l1, l2> le_result_;
 206     typedef typename le_result_::result_ result_;
 207     typedef typename le_result_::type type;
 208 };
 209
 210 #endif
 211
 212 #   undef AUX778076_ARITY_PARAM
 213 #   undef AUX778076_BIND_N_PARAMS
 214 #   undef AUX778076_BIND_PARAMS
 215 #   undef AUX778076_LAMBDA_PARAMS
 216
 217 #if !defined(BOOST_MPL_CFG_EXTENDED_TEMPLATE_PARAMETERS_MATCHING)
 218 BOOST_MPL_AUX_NA_SPEC(2, lambda)
 219 #else
 220 BOOST_MPL_AUX_NA_SPEC2(2, 3, lambda)
 221 #endif
 222
 223 }}
 224
 225 #endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
 226 #endif // BOOST_MPL_AUX_FULL_LAMBDA_HPP_INCLUDED
 227
 228 ///// iteration, depth == 1
 229
 230 // For gcc 4.4 compatability, we must include the
 231 // BOOST_PP_ITERATION_DEPTH test inside an #else clause.
 232 #else // BOOST_PP_IS_ITERATING
 233 #if BOOST_PP_ITERATION_DEPTH() == 1
 234 #define i_ BOOST_PP_FRAME_ITERATION(1)
 235
 236 #if i_ > 0
 237
 238 namespace aux {
 239
 240 #   define AUX778076_RESULT(unused, i_, T) \
 241     BOOST_PP_COMMA_IF(i_) \
 242     typename BOOST_PP_CAT(T, BOOST_PP_INC(i_))::result_ \
 243     /**/
 244
 245 #   define AUX778076_TYPE(unused, i_, T) \
 246     BOOST_PP_COMMA_IF(i_) \
 247     typename BOOST_PP_CAT(T, BOOST_PP_INC(i_))::type \
 248     /**/
 249
 250 template<
 251       typename IsLE, typename Tag
 252     , template< AUX778076_LAMBDA_PARAMS(i_, typename P) > class F
 253     , AUX778076_LAMBDA_PARAMS(i_, typename L)
 254     >
 255 struct BOOST_PP_CAT(le_result,i_)
 256 {
 257     typedef F<
 258           BOOST_MPL_PP_REPEAT(i_, AUX778076_TYPE, L)
 259         > result_;
 260
 261     typedef result_ type;
 262 };
 263
 264 template<
 265       typename Tag
 266     , template< AUX778076_LAMBDA_PARAMS(i_, typename P) > class F
 267     , AUX778076_LAMBDA_PARAMS(i_, typename L)
 268     >
 269 struct BOOST_PP_CAT(le_result,i_)< true_,Tag,F,AUX778076_LAMBDA_PARAMS(i_, L) >
 270 {
 271     typedef BOOST_PP_CAT(bind,i_)<
 272           BOOST_PP_CAT(quote,i_)<F,Tag>
 273         , BOOST_MPL_PP_REPEAT(i_, AUX778076_RESULT, L)
 274         > result_;
 275
 276     typedef mpl::protect<result_> type;
 277 };
 278
 279 #   undef AUX778076_TYPE
 280 #   undef AUX778076_RESULT
 281
 282 } // namespace aux
 283
 284
 285 #   define AUX778076_LAMBDA_TYPEDEF(unused, i_, T) \
 286     typedef lambda< BOOST_PP_CAT(T, BOOST_PP_INC(i_)), Tag > \
 287         BOOST_PP_CAT(l,BOOST_PP_INC(i_)); \
 288 /**/
 289
 290 #   define AUX778076_IS_LE_TYPEDEF(unused, i_, unused2) \
 291     typedef typename BOOST_PP_CAT(l,BOOST_PP_INC(i_))::is_le \
 292         BOOST_PP_CAT(is_le,BOOST_PP_INC(i_)); \
 293 /**/
 294
 295 #   define AUX778076_IS_LAMBDA_EXPR(unused, i_, unused2) \
 296     BOOST_PP_COMMA_IF(i_) \
 297     BOOST_PP_CAT(is_le,BOOST_PP_INC(i_))::value \
 298 /**/
 299
 300 template<
 301       template< AUX778076_LAMBDA_PARAMS(i_, typename P) > class F
 302     , AUX778076_LAMBDA_PARAMS(i_, typename T)
 303     , typename Tag
 304     >
 305 struct lambda<
 306           F<AUX778076_LAMBDA_PARAMS(i_, T)>
 307         , Tag
 308         AUX778076_ARITY_PARAM(int_<i_>)
 309         >
 310 {
 311     BOOST_MPL_PP_REPEAT(i_, AUX778076_LAMBDA_TYPEDEF, T)
 312     BOOST_MPL_PP_REPEAT(i_, AUX778076_IS_LE_TYPEDEF, unused)
 313
 314     typedef typename aux::lambda_or<
 315           BOOST_MPL_PP_REPEAT(i_, AUX778076_IS_LAMBDA_EXPR, unused)
 316         >::type is_le;
 317
 318     typedef aux::BOOST_PP_CAT(le_result,i_)<
 319           is_le, Tag, F, AUX778076_LAMBDA_PARAMS(i_, l)
 320         > le_result_;
 321
 322     typedef typename le_result_::result_ result_;
 323     typedef typename le_result_::type type;
 324 };
 325
 326
 327 #   undef AUX778076_IS_LAMBDA_EXPR
 328 #   undef AUX778076_IS_LE_TYPEDEF
 329 #   undef AUX778076_LAMBDA_TYPEDEF
 330
 331 #endif // i_ > 0
 332
 333 template<
 334       typename F AUX778076_BIND_N_PARAMS(i_, typename T)
 335     , typename Tag
 336     >
 337 struct lambda<
 338           BOOST_PP_CAT(bind,i_)<F AUX778076_BIND_N_PARAMS(i_, T)>
 339         , Tag
 340         AUX778076_ARITY_PARAM(int_<BOOST_PP_INC(i_)>)
 341         >
 342 {
 343     typedef false_ is_le;
 344     typedef BOOST_PP_CAT(bind,i_)<
 345           F
 346         AUX778076_BIND_N_PARAMS(i_, T)
 347         > result_;
 348
 349     typedef result_ type;
 350 };
 351
 352 #undef i_
 353 #endif // BOOST_PP_ITERATION_DEPTH()
 354 #endif // BOOST_PP_IS_ITERATING