2 #if !defined(BOOST_PP_IS_ITERATING)
6 #ifndef BOOST_MPL_PLACEHOLDERS_HPP_INCLUDED
7 #define BOOST_MPL_PLACEHOLDERS_HPP_INCLUDED
9 // Copyright Aleksey Gurtovoy 2001-2004
10 // Copyright Peter Dimov 2001-2003
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)
16 // See http://www.boost.org/libs/mpl for documentation.
18 // $Source: /cvsroot/boost/boost/boost/mpl/placeholders.hpp,v $
19 // $Date: 2004/09/16 14:08:46 $
23 #if !defined(BOOST_MPL_PREPROCESSING_MODE)
24 # include <boost/mpl/arg.hpp>
25 # include <boost/mpl/aux_/adl_barrier.hpp>
27 # if !defined(BOOST_MPL_CFG_NO_ADL_BARRIER_NAMESPACE)
28 # define BOOST_MPL_AUX_ARG_ADL_BARRIER_DECL(type) \
29 using ::BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE::type; \
32 # define BOOST_MPL_AUX_ARG_ADL_BARRIER_DECL(type) /**/
37 #include <boost/mpl/aux_/config/use_preprocessed.hpp>
39 #if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \
40 && !defined(BOOST_MPL_PREPROCESSING_MODE)
42 # define BOOST_MPL_PREPROCESSED_HEADER placeholders.hpp
43 # include <boost/mpl/aux_/include_preprocessed.hpp>
47 # include <boost/mpl/aux_/nttp_decl.hpp>
48 # include <boost/mpl/limits/arity.hpp>
49 # include <boost/preprocessor/iterate.hpp>
50 # include <boost/preprocessor/cat.hpp>
52 // watch out for GNU gettext users, who #define _(x)
53 #if !defined(_) || defined(BOOST_MPL_CFG_NO_UNNAMED_PLACEHOLDER_SUPPORT)
54 BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_OPEN
56 BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_CLOSE
58 namespace boost { namespace mpl {
60 BOOST_MPL_AUX_ARG_ADL_BARRIER_DECL(_)
62 namespace placeholders {
63 using BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE::_;
69 /// agurt, 17/mar/02: one more placeholder for the last 'apply#'
71 #define BOOST_PP_ITERATION_PARAMS_1 \
72 (3,(1, BOOST_MPL_LIMIT_METAFUNCTION_ARITY + 1, <boost/mpl/placeholders.hpp>))
73 #include BOOST_PP_ITERATE()
75 #endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
76 #endif // BOOST_MPL_PLACEHOLDERS_HPP_INCLUDED
81 #define i_ BOOST_PP_FRAME_ITERATION(1)
83 BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_OPEN
85 typedef arg<i_> BOOST_PP_CAT(_,i_);
87 BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_CLOSE
89 namespace boost { namespace mpl {
91 BOOST_MPL_AUX_ARG_ADL_BARRIER_DECL(BOOST_PP_CAT(_,i_))
93 namespace placeholders {
94 using BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE::BOOST_PP_CAT(_,i_);
100 #endif // BOOST_PP_IS_ITERATING