1
2#if !defined(BOOST_PP_IS_ITERATING)
3
4///// header body
5
6#ifndef BOOST_MPL_BIND_HPP_INCLUDED
7#define BOOST_MPL_BIND_HPP_INCLUDED
8
9// Copyright Peter Dimov 2001
10// Copyright Aleksey Gurtovoy 2001-2004
11//
12// Distributed under the Boost Software License, Version 1.0.
13// (See accompanying file LICENSE_1_0.txt or copy at
14// http://www.boost.org/LICENSE_1_0.txt)
15//
16// See http://www.boost.org/libs/mpl for documentation.
17
18// $Id$
19// $Date$
20// $Revision$
21
22#if !defined(BOOST_MPL_PREPROCESSING_MODE)
23# include <boost/mpl/bind_fwd.hpp>
24# include <boost/mpl/placeholders.hpp>
25# include <boost/mpl/next.hpp>
26# include <boost/mpl/protect.hpp>
27# include <boost/mpl/apply_wrap.hpp>
28# include <boost/mpl/limits/arity.hpp>
29# include <boost/mpl/aux_/na.hpp>
30# include <boost/mpl/aux_/arity_spec.hpp>
31# include <boost/mpl/aux_/type_wrapper.hpp>
32# include <boost/mpl/aux_/yes_no.hpp>
33# if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
34# include <boost/type_traits/is_reference.hpp>
35# endif
36#endif
37
38#include <boost/mpl/aux_/config/bind.hpp>
39#include <boost/mpl/aux_/config/static_constant.hpp>
40#include <boost/mpl/aux_/config/use_preprocessed.hpp>
41
42#if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \
43 && !defined(BOOST_MPL_PREPROCESSING_MODE)
44
45# if defined(BOOST_MPL_CFG_NO_UNNAMED_PLACEHOLDER_SUPPORT)
46# define BOOST_MPL_PREPROCESSED_HEADER basic_bind.hpp
47# else
48# define BOOST_MPL_PREPROCESSED_HEADER bind.hpp
49# endif
50# include <boost/mpl/aux_/include_preprocessed.hpp>
51
52#else
53
54# include <boost/mpl/aux_/preprocessor/params.hpp>
55# include <boost/mpl/aux_/preprocessor/default_params.hpp>
56# include <boost/mpl/aux_/preprocessor/def_params_tail.hpp>
57# include <boost/mpl/aux_/preprocessor/partial_spec_params.hpp>
58# include <boost/mpl/aux_/preprocessor/ext_params.hpp>
59# include <boost/mpl/aux_/preprocessor/repeat.hpp>
60# include <boost/mpl/aux_/preprocessor/enum.hpp>
61# include <boost/mpl/aux_/preprocessor/add.hpp>
62# include <boost/mpl/aux_/config/dmc_ambiguous_ctps.hpp>
63# include <boost/mpl/aux_/config/ctps.hpp>
64# include <boost/mpl/aux_/config/ttp.hpp>
65# include <boost/mpl/aux_/config/dtp.hpp>
66# include <boost/mpl/aux_/nttp_decl.hpp>
67
68# include <boost/preprocessor/iterate.hpp>
69# include <boost/preprocessor/comma_if.hpp>
70# include <boost/preprocessor/cat.hpp>
71# include <boost/preprocessor/inc.hpp>
72
73namespace boost { namespace mpl {
74
75// local macros, #undef-ined at the end of the header
76# define AUX778076_APPLY \
77 BOOST_PP_CAT(apply_wrap,BOOST_MPL_LIMIT_METAFUNCTION_ARITY) \
78 /**/
79
80# if defined(BOOST_MPL_CFG_DMC_AMBIGUOUS_CTPS)
81# define AUX778076_DMC_PARAM() , int dummy_
82# else
83# define AUX778076_DMC_PARAM()
84# endif
85
86# define AUX778076_BIND_PARAMS(param) \
87 BOOST_MPL_PP_PARAMS( \
88 BOOST_MPL_LIMIT_METAFUNCTION_ARITY \
89 , param \
90 ) \
91 /**/
92
93# define AUX778076_BIND_DEFAULT_PARAMS(param, value) \
94 BOOST_MPL_PP_DEFAULT_PARAMS( \
95 BOOST_MPL_LIMIT_METAFUNCTION_ARITY \
96 , param \
97 , value \
98 ) \
99 /**/
100
101# define AUX778076_BIND_N_PARAMS(n, param) \
102 BOOST_PP_COMMA_IF(n) BOOST_MPL_PP_PARAMS(n, param) \
103 /**/
104
105# define AUX778076_BIND_N_SPEC_PARAMS(n, param, def) \
106 BOOST_PP_COMMA_IF(n) \
107 BOOST_MPL_PP_PARTIAL_SPEC_PARAMS(n, param, def) \
108 /**/
109
110#if !defined(BOOST_MPL_CFG_NO_DEFAULT_PARAMETERS_IN_NESTED_TEMPLATES)
111# define AUX778076_BIND_NESTED_DEFAULT_PARAMS(param, value) \
112 AUX778076_BIND_DEFAULT_PARAMS(param, value) \
113 /**/
114#else
115# define AUX778076_BIND_NESTED_DEFAULT_PARAMS(param, value) \
116 AUX778076_BIND_PARAMS(param) \
117 /**/
118#endif
119
120namespace aux {
121
122#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
123
124template<
125 typename T, AUX778076_BIND_PARAMS(typename U)
126 >
127struct resolve_bind_arg
128{
129 typedef T type;
130};
131
132# if !defined(BOOST_MPL_CFG_NO_UNNAMED_PLACEHOLDER_SUPPORT)
133
134template<
135 typename T
136 , typename Arg
137 >
138struct replace_unnamed_arg
139{
140 typedef Arg next;
141 typedef T type;
142};
143
144template<
145 typename Arg
146 >
147struct replace_unnamed_arg< arg<-1>,Arg >
148{
149 typedef typename Arg::next next;
150 typedef Arg type;
151};
152
153# endif // BOOST_MPL_CFG_NO_UNNAMED_PLACEHOLDER_SUPPORT
154
155template<
156 BOOST_MPL_AUX_NTTP_DECL(int, N), AUX778076_BIND_PARAMS(typename U)
157 >
158struct resolve_bind_arg< arg<N>,AUX778076_BIND_PARAMS(U) >
159{
160 typedef typename AUX778076_APPLY<mpl::arg<N>, AUX778076_BIND_PARAMS(U)>::type type;
161};
162
163#if !defined(BOOST_MPL_CFG_NO_BIND_TEMPLATE)
164template<
165 typename F, AUX778076_BIND_PARAMS(typename T), AUX778076_BIND_PARAMS(typename U)
166 >
167struct resolve_bind_arg< bind<F,AUX778076_BIND_PARAMS(T)>,AUX778076_BIND_PARAMS(U) >
168{
169 typedef bind<F,AUX778076_BIND_PARAMS(T)> f_;
170 typedef typename AUX778076_APPLY<f_, AUX778076_BIND_PARAMS(U)>::type type;
171};
172#endif
173
174#else // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
175
176// agurt, 15/jan/02: it's not a intended to be used as a function class, and
177// MSVC6.5 has problems with 'apply' name here (the code compiles, but doesn't
178// work), so I went with the 'result_' here, and in all other similar cases
179template< bool >
180struct resolve_arg_impl
181{
182 template< typename T, AUX778076_BIND_PARAMS(typename U) > struct result_
183 {
184 typedef T type;
185 };
186};
187
188template<>
189struct resolve_arg_impl<true>
190{
191 template< typename T, AUX778076_BIND_PARAMS(typename U) > struct result_
192 {
193 typedef typename AUX778076_APPLY<
194 T
195 , AUX778076_BIND_PARAMS(U)
196 >::type type;
197 };
198};
199
200// for 'resolve_bind_arg'
201template< typename T > struct is_bind_template;
202
203template<
204 typename T, AUX778076_BIND_PARAMS(typename U)
205 >
206struct resolve_bind_arg
207 : resolve_arg_impl< is_bind_template<T>::value >
208 ::template result_< T,AUX778076_BIND_PARAMS(U) >
209{
210};
211
212# if !defined(BOOST_MPL_CFG_NO_UNNAMED_PLACEHOLDER_SUPPORT)
213
214template< typename T >
215struct replace_unnamed_arg_impl
216{
217 template< typename Arg > struct result_
218 {
219 typedef Arg next;
220 typedef T type;
221 };
222};
223
224template<>
225struct replace_unnamed_arg_impl< arg<-1> >
226{
227 template< typename Arg > struct result_
228 {
229 typedef typename next<Arg>::type next;
230 typedef Arg type;
231 };
232};
233
234template< typename T, typename Arg >
235struct replace_unnamed_arg
236 : replace_unnamed_arg_impl<T>::template result_<Arg>
237{
238};
239
240# endif // BOOST_MPL_CFG_NO_UNNAMED_PLACEHOLDER_SUPPORT
241
242// agurt, 10/mar/02: the forward declaration has to appear before any of
243// 'is_bind_helper' overloads, otherwise MSVC6.5 issues an ICE on it
244template< BOOST_MPL_AUX_NTTP_DECL(int, arity_) > struct bind_chooser;
245
246aux::no_tag is_bind_helper(...);
247template< typename T > aux::no_tag is_bind_helper(protect<T>*);
248
249// overload for "main" form
250// agurt, 15/mar/02: MSVC 6.5 fails to properly resolve the overload
251// in case if we use 'aux::type_wrapper< bind<...> >' here, and all
252// 'bind' instantiations form a complete type anyway
253#if !defined(BOOST_MPL_CFG_NO_BIND_TEMPLATE)
254template<
255 typename F, AUX778076_BIND_PARAMS(typename T)
256 >
257aux::yes_tag is_bind_helper(bind<F,AUX778076_BIND_PARAMS(T)>*);
258#endif
259
260template< BOOST_MPL_AUX_NTTP_DECL(int, N) >
261aux::yes_tag is_bind_helper(arg<N>*);
262
263template< bool is_ref_ = true >
264struct is_bind_template_impl
265{
266 template< typename T > struct result_
267 {
268 BOOST_STATIC_CONSTANT(bool, value = false);
269 };
270};
271
272template<>
273struct is_bind_template_impl<false>
274{
275 template< typename T > struct result_
276 {
277 BOOST_STATIC_CONSTANT(bool, value =
278 sizeof(aux::is_bind_helper(static_cast<T*>(0)))
279 == sizeof(aux::yes_tag)
280 );
281 };
282};
283
284template< typename T > struct is_bind_template
285 : is_bind_template_impl< ::boost::detail::is_reference_impl<T>::value >
286 ::template result_<T>
287{
288};
289
290#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
291
292} // namespace aux
293
294
295#define BOOST_PP_ITERATION_PARAMS_1 \
296 (3,(0, BOOST_MPL_LIMIT_METAFUNCTION_ARITY, <boost/mpl/bind.hpp>))
297#include BOOST_PP_ITERATE()
298
299#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) \
300 && !defined(BOOST_MPL_CFG_NO_TEMPLATE_TEMPLATE_PARAMETERS)
301/// if_/eval_if specializations
302# define AUX778076_SPEC_NAME if_
303# define BOOST_PP_ITERATION_PARAMS_1 (3,(3, 3, <boost/mpl/bind.hpp>))
304# include BOOST_PP_ITERATE()
305
306#if !defined(BOOST_MPL_CFG_DMC_AMBIGUOUS_CTPS)
307# define AUX778076_SPEC_NAME eval_if
308# define BOOST_PP_ITERATION_PARAMS_1 (3,(3, 3, <boost/mpl/bind.hpp>))
309# include BOOST_PP_ITERATE()
310#endif
311#endif
312
313// real C++ version is already taken care of
314#if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) \
315 && !defined(BOOST_MPL_CFG_NO_BIND_TEMPLATE)
316
317namespace aux {
318// apply_count_args
319#define AUX778076_COUNT_ARGS_PREFIX bind
320#define AUX778076_COUNT_ARGS_DEFAULT na
321#define AUX778076_COUNT_ARGS_ARITY BOOST_MPL_LIMIT_METAFUNCTION_ARITY
322#include <boost/mpl/aux_/count_args.hpp>
323}
324
325// bind
326template<
327 typename F, AUX778076_BIND_PARAMS(typename T) AUX778076_DMC_PARAM()
328 >
329struct bind
330 : aux::bind_chooser<
331 aux::bind_count_args<AUX778076_BIND_PARAMS(T)>::value
332 >::template result_< F,AUX778076_BIND_PARAMS(T) >::type
333{
334};
335
336BOOST_MPL_AUX_ARITY_SPEC(
337 BOOST_PP_INC(BOOST_MPL_LIMIT_METAFUNCTION_ARITY)
338 , bind
339 )
340
341BOOST_MPL_AUX_TEMPLATE_ARITY_SPEC(
342 BOOST_PP_INC(BOOST_MPL_LIMIT_METAFUNCTION_ARITY)
343 , bind
344 )
345
346
347#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
348
349# undef AUX778076_BIND_NESTED_DEFAULT_PARAMS
350# undef AUX778076_BIND_N_SPEC_PARAMS
351# undef AUX778076_BIND_N_PARAMS
352# undef AUX778076_BIND_DEFAULT_PARAMS
353# undef AUX778076_BIND_PARAMS
354# undef AUX778076_DMC_PARAM
355# undef AUX778076_APPLY
356
357}}
358
359#endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
360#endif // BOOST_MPL_BIND_HPP_INCLUDED
361
362///// iteration, depth == 1
363
364// For gcc 4.4 compatability, we must include the
365// BOOST_PP_ITERATION_DEPTH test inside an #else clause.
366#else // BOOST_PP_IS_ITERATING
367#if BOOST_PP_ITERATION_DEPTH() == 1
368
369# define i_ BOOST_PP_FRAME_ITERATION(1)
370
371#if defined(AUX778076_SPEC_NAME)
372
373// lazy metafunction specialization
374template< template< BOOST_MPL_PP_PARAMS(i_, typename T) > class F, typename Tag >
375struct BOOST_PP_CAT(quote,i_);
376
377template< BOOST_MPL_PP_PARAMS(i_, typename T) > struct AUX778076_SPEC_NAME;
378
379template<
380 typename Tag AUX778076_BIND_N_PARAMS(i_, typename T)
381 >
382struct BOOST_PP_CAT(bind,i_)<
383 BOOST_PP_CAT(quote,i_)<AUX778076_SPEC_NAME,Tag>
384 AUX778076_BIND_N_PARAMS(i_,T)
385 >
386{
387 template<
388 AUX778076_BIND_NESTED_DEFAULT_PARAMS(typename U, na)
389 >
390 struct apply
391 {
392 private:
393 typedef mpl::arg<1> n1;
394# define BOOST_PP_ITERATION_PARAMS_2 (3,(1, i_, <boost/mpl/bind.hpp>))
395# include BOOST_PP_ITERATE()
396
397 typedef typename AUX778076_SPEC_NAME<
398 typename t1::type
399 , BOOST_MPL_PP_EXT_PARAMS(2, BOOST_PP_INC(i_), t)
400 >::type f_;
401
402 public:
403 typedef typename f_::type type;
404 };
405};
406
407#undef AUX778076_SPEC_NAME
408
409#else // AUX778076_SPEC_NAME
410
411template<
412 typename F AUX778076_BIND_N_PARAMS(i_, typename T) AUX778076_DMC_PARAM()
413 >
414struct BOOST_PP_CAT(bind,i_)
415{
416 template<
417 AUX778076_BIND_NESTED_DEFAULT_PARAMS(typename U, na)
418 >
419 struct apply
420 {
421 private:
422# if !defined(BOOST_MPL_CFG_NO_UNNAMED_PLACEHOLDER_SUPPORT)
423
424 typedef aux::replace_unnamed_arg< F,mpl::arg<1> > r0;
425 typedef typename r0::type a0;
426 typedef typename r0::next n1;
427 typedef typename aux::resolve_bind_arg<a0,AUX778076_BIND_PARAMS(U)>::type f_;
428 ///
429# else
430 typedef typename aux::resolve_bind_arg<F,AUX778076_BIND_PARAMS(U)>::type f_;
431
432# endif // BOOST_MPL_CFG_NO_UNNAMED_PLACEHOLDER_SUPPORT
433
434# if i_ > 0
435# define BOOST_PP_ITERATION_PARAMS_2 (3,(1, i_, <boost/mpl/bind.hpp>))
436# include BOOST_PP_ITERATE()
437# endif
438
439 public:
440
441# define AUX778076_ARG(unused, i_, t) \
442 BOOST_PP_COMMA_IF(i_) \
443 typename BOOST_PP_CAT(t,BOOST_PP_INC(i_))::type \
444/**/
445
446 typedef typename BOOST_PP_CAT(apply_wrap,i_)<
447 f_
448 BOOST_PP_COMMA_IF(i_) BOOST_MPL_PP_REPEAT(i_, AUX778076_ARG, t)
449 >::type type;
450
451# undef AUX778076_ARG
452 };
453};
454
455namespace aux {
456
457#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
458
459template<
460 typename F AUX778076_BIND_N_PARAMS(i_, typename T), AUX778076_BIND_PARAMS(typename U)
461 >
462struct resolve_bind_arg<
463 BOOST_PP_CAT(bind,i_)<F AUX778076_BIND_N_PARAMS(i_,T)>,AUX778076_BIND_PARAMS(U)
464 >
465{
466 typedef BOOST_PP_CAT(bind,i_)<F AUX778076_BIND_N_PARAMS(i_,T)> f_;
467 typedef typename AUX778076_APPLY<f_, AUX778076_BIND_PARAMS(U)>::type type;
468};
469
470#else
471
472template<
473 typename F AUX778076_BIND_N_PARAMS(i_, typename T)
474 >
475aux::yes_tag
476is_bind_helper(BOOST_PP_CAT(bind,i_)<F AUX778076_BIND_N_PARAMS(i_,T)>*);
477
478#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
479
480} // namespace aux
481
482BOOST_MPL_AUX_ARITY_SPEC(BOOST_PP_INC(i_), BOOST_PP_CAT(bind,i_))
483BOOST_MPL_AUX_TEMPLATE_ARITY_SPEC(BOOST_PP_INC(i_), BOOST_PP_CAT(bind,i_))
484
485# if !defined(BOOST_MPL_CFG_NO_BIND_TEMPLATE)
486# if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
487
488#if i_ == BOOST_MPL_LIMIT_METAFUNCTION_ARITY
489/// primary template (not a specialization!)
490template<
491 typename F AUX778076_BIND_N_PARAMS(i_, typename T) AUX778076_DMC_PARAM()
492 >
493struct bind
494 : BOOST_PP_CAT(bind,i_)<F AUX778076_BIND_N_PARAMS(i_,T) >
495{
496};
497#else
498template<
499 typename F AUX778076_BIND_N_PARAMS(i_, typename T) AUX778076_DMC_PARAM()
500 >
501struct bind< F AUX778076_BIND_N_SPEC_PARAMS(i_, T, na) >
502 : BOOST_PP_CAT(bind,i_)<F AUX778076_BIND_N_PARAMS(i_,T) >
503{
504};
505#endif
506
507# else // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
508
509namespace aux {
510
511template<>
512struct bind_chooser<i_>
513{
514 template<
515 typename F, AUX778076_BIND_PARAMS(typename T)
516 >
517 struct result_
518 {
519 typedef BOOST_PP_CAT(bind,i_)< F AUX778076_BIND_N_PARAMS(i_,T) > type;
520 };
521};
522
523} // namespace aux
524
525# endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
526# endif // BOOST_MPL_CFG_NO_BIND_TEMPLATE
527
528#endif // AUX778076_SPEC_NAME
529
530# undef i_
531
532///// iteration, depth == 2
533
534#elif BOOST_PP_ITERATION_DEPTH() == 2
535
536# define j_ BOOST_PP_FRAME_ITERATION(2)
537# if !defined(BOOST_MPL_CFG_NO_UNNAMED_PLACEHOLDER_SUPPORT)
538
539 typedef aux::replace_unnamed_arg< BOOST_PP_CAT(T,j_),BOOST_PP_CAT(n,j_) > BOOST_PP_CAT(r,j_);
540 typedef typename BOOST_PP_CAT(r,j_)::type BOOST_PP_CAT(a,j_);
541 typedef typename BOOST_PP_CAT(r,j_)::next BOOST_PP_CAT(n,BOOST_PP_INC(j_));
542 typedef aux::resolve_bind_arg<BOOST_PP_CAT(a,j_), AUX778076_BIND_PARAMS(U)> BOOST_PP_CAT(t,j_);
543 ///
544# else
545 typedef aux::resolve_bind_arg< BOOST_PP_CAT(T,j_),AUX778076_BIND_PARAMS(U)> BOOST_PP_CAT(t,j_);
546
547# endif
548# undef j_
549
550#endif // BOOST_PP_ITERATION_DEPTH()
551#endif // BOOST_PP_IS_ITERATING
552

source code of boost/boost/mpl/bind.hpp