1
2 #if !defined(BOOST_PP_IS_ITERATING)
3
4 ///// header body
5
6 #ifndef BOOST_MPL_QUOTE_HPP_INCLUDED
7 #define BOOST_MPL_QUOTE_HPP_INCLUDED
8
9 // Copyright Aleksey Gurtovoy 2000-2008
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: quote.hpp 49272 2008-10-11 06:50:46Z agurtovoy $
18 // $Date: 2008-10-10 23:50:46 -0700 (Fri, 10 Oct 2008) $
19 // $Revision: 49272 $
20
21 #if !defined(BOOST_MPL_PREPROCESSING_MODE)
22 # include <boost/mpl/void.hpp>
23 # include <boost/mpl/aux_/has_type.hpp>
24 #endif
25
26 #include <boost/mpl/aux_/config/bcc.hpp>
27 #include <boost/mpl/aux_/config/ttp.hpp>
28
29 #if defined(BOOST_MPL_CFG_NO_TEMPLATE_TEMPLATE_PARAMETERS) \
30 && !defined(BOOST_MPL_CFG_BCC590_WORKAROUNDS)
31 # define BOOST_MPL_CFG_NO_QUOTE_TEMPLATE
32 #endif
33
34 #if !defined(BOOST_MPL_CFG_NO_IMPLICIT_METAFUNCTIONS) \
35 && defined(BOOST_MPL_CFG_NO_HAS_XXX)
36 # define BOOST_MPL_CFG_NO_IMPLICIT_METAFUNCTIONS
37 #endif
38
39 #include <boost/mpl/aux_/config/use_preprocessed.hpp>
40
41 #if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \
42 && !defined(BOOST_MPL_PREPROCESSING_MODE)
43
44 # define BOOST_MPL_PREPROCESSED_HEADER quote.hpp
45 # include <boost/mpl/aux_/include_preprocessed.hpp>
46
47 #else
48
49 # include <boost/mpl/limits/arity.hpp>
50 # include <boost/mpl/aux_/preprocessor/params.hpp>
51 # include <boost/mpl/aux_/config/ctps.hpp>
52 # include <boost/mpl/aux_/config/workaround.hpp>
53
54 # include <boost/preprocessor/iterate.hpp>
55 # include <boost/preprocessor/cat.hpp>
56
57 #if !defined(BOOST_MPL_CFG_NO_QUOTE_TEMPLATE)
58
59 namespace boost { namespace mpl {
60
61 #if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
62
63 template< typename T, bool has_type_ >
64 struct quote_impl
65 // GCC has a problem with metafunction forwarding when T is a
66 // specialization of a template called 'type'.
67 # if BOOST_WORKAROUND(__GNUC__, BOOST_TESTED_AT(4)) \
68 && BOOST_WORKAROUND(__GNUC_MINOR__, BOOST_TESTED_AT(0)) \
69 && BOOST_WORKAROUND(__GNUC_PATCHLEVEL__, BOOST_TESTED_AT(2))
70 {
71 typedef typename T::type type;
72 };
73 # else
74 : T
75 {
76 };
77 # endif
78
79 template< typename T >
80 struct quote_impl<T,false>
81 {
82 typedef T type;
83 };
84
85 #else // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
86
87 template< bool > struct quote_impl
88 {
89 template< typename T > struct result_
90 : T
91 {
92 };
93 };
94
95 template<> struct quote_impl<false>
96 {
97 template< typename T > struct result_
98 {
99 typedef T type;
100 };
101 };
102
103 #endif
104
105 #define BOOST_PP_ITERATION_PARAMS_1 \
106 (3,(1, BOOST_MPL_LIMIT_METAFUNCTION_ARITY, <boost/mpl/quote.hpp>))
107 #include BOOST_PP_ITERATE()
108
109 }}
110
111 #endif // BOOST_MPL_CFG_NO_QUOTE_TEMPLATE
112
113 #endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
114 #endif // BOOST_MPL_QUOTE_HPP_INCLUDED
115
116 ///// iteration
117
118 #else
119 #define i_ BOOST_PP_FRAME_ITERATION(1)
120
121 template<
122 template< BOOST_MPL_PP_PARAMS(i_, typename P) > class F
123 , typename Tag = void_
124 >
BOOST_PP_CAT(quote,i_)125 struct BOOST_PP_CAT(quote,i_)
126 {
127 template< BOOST_MPL_PP_PARAMS(i_, typename U) > struct apply
128 #if defined(BOOST_MPL_CFG_BCC590_WORKAROUNDS)
129 {
130 typedef typename quote_impl<
131 F< BOOST_MPL_PP_PARAMS(i_, U) >
132 , aux::has_type< F< BOOST_MPL_PP_PARAMS(i_, U) > >::value
133 >::type type;
134 };
135 #elif !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
136 : quote_impl<
137 F< BOOST_MPL_PP_PARAMS(i_, U) >
138 , aux::has_type< F< BOOST_MPL_PP_PARAMS(i_, U) > >::value
139 >
140 {
141 };
142 #else
143 : quote_impl< aux::has_type< F< BOOST_MPL_PP_PARAMS(i_, U) > >::value >
144 ::template result_< F< BOOST_MPL_PP_PARAMS(i_, U) > >
145 {
146 };
147 #endif
148 };
149
150 #undef i_
151 #endif // BOOST_PP_IS_ITERATING
152