1
2#if !defined(BOOST_PP_IS_ITERATING)
3
4///// header body
5
6#ifndef BOOST_MPL_APPLY_HPP_INCLUDED
7#define BOOST_MPL_APPLY_HPP_INCLUDED
8
9// Copyright Aleksey Gurtovoy 2000-2004
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/apply_fwd.hpp>
23# include <boost/mpl/apply_wrap.hpp>
24# include <boost/mpl/placeholders.hpp>
25# include <boost/mpl/lambda.hpp>
26# include <boost/mpl/aux_/na.hpp>
27# include <boost/mpl/aux_/lambda_support.hpp>
28#endif
29
30#include <boost/mpl/aux_/config/use_preprocessed.hpp>
31
32#if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \
33 && !defined(BOOST_MPL_PREPROCESSING_MODE)
34
35# define BOOST_MPL_PREPROCESSED_HEADER apply.hpp
36# include <boost/mpl/aux_/include_preprocessed.hpp>
37
38#else
39
40# include <boost/mpl/limits/arity.hpp>
41# include <boost/mpl/aux_/preprocessor/params.hpp>
42# include <boost/mpl/aux_/preprocessor/default_params.hpp>
43# include <boost/mpl/aux_/preprocessor/partial_spec_params.hpp>
44# include <boost/mpl/aux_/preprocessor/enum.hpp>
45# include <boost/mpl/aux_/config/lambda.hpp>
46# include <boost/mpl/aux_/config/dtp.hpp>
47# include <boost/mpl/aux_/nttp_decl.hpp>
48# include <boost/mpl/aux_/config/eti.hpp>
49# include <boost/mpl/aux_/config/msvc.hpp>
50# include <boost/mpl/aux_/config/workaround.hpp>
51
52# include <boost/preprocessor/comma_if.hpp>
53# include <boost/preprocessor/inc.hpp>
54# include <boost/preprocessor/iterate.hpp>
55# include <boost/preprocessor/cat.hpp>
56
57namespace boost { namespace mpl {
58
59// local macros, #undef-ined at the end of the header
60# define AUX778076_APPLY_PARAMS(param) \
61 BOOST_MPL_PP_PARAMS( \
62 BOOST_MPL_LIMIT_METAFUNCTION_ARITY \
63 , param \
64 ) \
65 /**/
66
67# define AUX778076_APPLY_DEF_PARAMS(param, value) \
68 BOOST_MPL_PP_DEFAULT_PARAMS( \
69 BOOST_MPL_LIMIT_METAFUNCTION_ARITY \
70 , param \
71 , value \
72 ) \
73 /**/
74
75# define AUX778076_APPLY_N_PARAMS(n, param) \
76 BOOST_MPL_PP_PARAMS(n, param) \
77 /**/
78
79# define AUX778076_APPLY_N_COMMA_PARAMS(n, param) \
80 BOOST_PP_COMMA_IF(n) \
81 BOOST_MPL_PP_PARAMS(n, param) \
82 /**/
83
84# define AUX778076_APPLY_N_PARTIAL_SPEC_PARAMS(n, param, def) \
85 BOOST_PP_COMMA_IF(n) \
86 BOOST_MPL_PP_PARTIAL_SPEC_PARAMS(n, param, def) \
87 /**/
88
89# define AUX778076_APPLY_N_SPEC_PARAMS(n, param) \
90 BOOST_MPL_PP_ENUM(BOOST_PP_INC(n), param) \
91 /**/
92
93
94#define BOOST_PP_ITERATION_PARAMS_1 \
95 (3,(0, BOOST_MPL_LIMIT_METAFUNCTION_ARITY, <boost/mpl/apply.hpp>))
96#include BOOST_PP_ITERATE()
97
98# if !defined(BOOST_MPL_CFG_NO_APPLY_TEMPLATE)
99// real C++ version is already taken care of
100# if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
101
102namespace aux {
103// apply_count_args
104#define AUX778076_COUNT_ARGS_PREFIX apply
105#define AUX778076_COUNT_ARGS_DEFAULT na
106#define AUX778076_COUNT_ARGS_ARITY BOOST_MPL_LIMIT_METAFUNCTION_ARITY
107#include <boost/mpl/aux_/count_args.hpp>
108}
109
110
111template<
112 typename F, AUX778076_APPLY_DEF_PARAMS(typename T, na)
113 >
114struct apply
115 : aux::apply_chooser<
116 aux::apply_count_args< AUX778076_APPLY_PARAMS(T) >::value
117 >::template result_< F, AUX778076_APPLY_PARAMS(T) >::type
118{
119};
120
121# endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
122# endif // BOOST_MPL_CFG_NO_APPLY_TEMPLATE
123
124# undef AUX778076_APPLY_N_SPEC_PARAMS
125# undef AUX778076_APPLY_N_PARTIAL_SPEC_PARAMS
126# undef AUX778076_APPLY_N_COMMA_PARAMS
127# undef AUX778076_APPLY_N_PARAMS
128# undef AUX778076_APPLY_DEF_PARAMS
129# undef AUX778076_APPLY_PARAMS
130
131}}
132
133#endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
134#endif // BOOST_MPL_APPLY_HPP_INCLUDED
135
136///// iteration, depth == 1
137
138// For gcc 4.4 compatability, we must include the
139// BOOST_PP_ITERATION_DEPTH test inside an #else clause.
140#else // BOOST_PP_IS_ITERATING
141#if BOOST_PP_ITERATION_DEPTH() == 1
142
143# define i_ BOOST_PP_FRAME_ITERATION(1)
144
145template<
146 typename F AUX778076_APPLY_N_COMMA_PARAMS(i_, typename T)
147 >
148struct BOOST_PP_CAT(apply,i_)
149#if !BOOST_WORKAROUND(BOOST_MSVC, < 1300)
150 : BOOST_PP_CAT(apply_wrap,i_)<
151 typename lambda<F>::type
152 AUX778076_APPLY_N_COMMA_PARAMS(i_, T)
153 >
154{
155#else
156{
157 typedef typename BOOST_PP_CAT(apply_wrap,i_)<
158 typename lambda<F>::type
159 AUX778076_APPLY_N_COMMA_PARAMS(i_, T)
160 >::type type;
161#endif
162 BOOST_MPL_AUX_LAMBDA_SUPPORT(
163 BOOST_PP_INC(i_)
164 , BOOST_PP_CAT(apply,i_)
165 , (F AUX778076_APPLY_N_COMMA_PARAMS(i_,T))
166 )
167};
168
169
170#if defined(BOOST_MPL_CFG_MSVC_ETI_BUG)
171/// workaround for ETI bug
172template<>
173struct BOOST_PP_CAT(apply,i_)<AUX778076_APPLY_N_SPEC_PARAMS(i_, int)>
174{
175 typedef int type;
176};
177#endif
178
179# if !defined(BOOST_MPL_CFG_NO_APPLY_TEMPLATE)
180# if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
181
182#if i_ == BOOST_MPL_LIMIT_METAFUNCTION_ARITY
183/// primary template (not a specialization!)
184template<
185 typename F AUX778076_APPLY_N_COMMA_PARAMS(i_, typename T)
186 >
187struct apply
188 : BOOST_PP_CAT(apply,i_)< F AUX778076_APPLY_N_COMMA_PARAMS(i_, T) >
189{
190};
191#else
192template<
193 typename F AUX778076_APPLY_N_COMMA_PARAMS(i_, typename T)
194 >
195struct apply< F AUX778076_APPLY_N_PARTIAL_SPEC_PARAMS(i_, T, na) >
196 : BOOST_PP_CAT(apply,i_)< F AUX778076_APPLY_N_COMMA_PARAMS(i_, T) >
197{
198};
199#endif
200
201# else // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
202
203#if !defined(BOOST_MPL_CFG_NO_APPLY_TEMPLATE)
204namespace aux {
205
206template<>
207struct apply_chooser<i_>
208{
209 template<
210 typename F, AUX778076_APPLY_PARAMS(typename T)
211 >
212 struct result_
213 {
214 typedef BOOST_PP_CAT(apply,i_)<
215 F AUX778076_APPLY_N_COMMA_PARAMS(i_, T)
216 > type;
217 };
218};
219
220} // namespace aux
221#endif
222
223# endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
224# endif // BOOST_MPL_CFG_NO_APPLY_TEMPLATE
225
226# undef i_
227
228#endif // BOOST_PP_ITERATION_DEPTH()
229#endif // BOOST_PP_IS_ITERATING
230

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