2 #if !defined(BOOST_PP_IS_ITERATING)
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6 #ifndef BOOST_MPL_ARG_HPP_INCLUDED
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7 #define BOOST_MPL_ARG_HPP_INCLUDED
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9 // Copyright Peter Dimov 2001-2002
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10 // Copyright Aleksey Gurtovoy 2001-2004
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12 // Distributed under the Boost Software License, Version 1.0.
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13 // (See accompanying file LICENSE_1_0.txt or copy at
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14 // http://www.boost.org/LICENSE_1_0.txt)
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16 // See http://www.boost.org/libs/mpl for documentation.
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18 // $Id: arg.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
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19 // $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $
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20 // $Revision: 49267 $
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22 #if !defined(BOOST_MPL_PREPROCESSING_MODE)
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23 # include <boost/mpl/arg_fwd.hpp>
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24 # include <boost/mpl/aux_/na.hpp>
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25 # include <boost/mpl/aux_/na_assert.hpp>
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26 # include <boost/mpl/aux_/arity_spec.hpp>
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27 # include <boost/mpl/aux_/arg_typedef.hpp>
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30 #include <boost/mpl/aux_/config/static_constant.hpp>
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31 #include <boost/mpl/aux_/config/use_preprocessed.hpp>
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33 #if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \
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34 && !defined(BOOST_MPL_PREPROCESSING_MODE)
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36 # define BOOST_MPL_PREPROCESSED_HEADER arg.hpp
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37 # include <boost/mpl/aux_/include_preprocessed.hpp>
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41 # include <boost/mpl/limits/arity.hpp>
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42 # include <boost/mpl/aux_/preprocessor/default_params.hpp>
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43 # include <boost/mpl/aux_/preprocessor/params.hpp>
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44 # include <boost/mpl/aux_/config/lambda.hpp>
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45 # include <boost/mpl/aux_/config/dtp.hpp>
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46 # include <boost/mpl/aux_/nttp_decl.hpp>
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48 # include <boost/preprocessor/iterate.hpp>
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49 # include <boost/preprocessor/inc.hpp>
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50 # include <boost/preprocessor/cat.hpp>
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52 BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_OPEN
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54 // local macro, #undef-ined at the end of the header
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55 #if !defined(BOOST_MPL_CFG_NO_DEFAULT_PARAMETERS_IN_NESTED_TEMPLATES)
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56 # define AUX778076_ARG_N_DEFAULT_PARAMS(param,value) \
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57 BOOST_MPL_PP_DEFAULT_PARAMS( \
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58 BOOST_MPL_LIMIT_METAFUNCTION_ARITY \
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64 # define AUX778076_ARG_N_DEFAULT_PARAMS(param,value) \
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65 BOOST_MPL_PP_PARAMS( \
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66 BOOST_MPL_LIMIT_METAFUNCTION_ARITY \
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72 #define BOOST_PP_ITERATION_PARAMS_1 \
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73 (3,(0, BOOST_MPL_LIMIT_METAFUNCTION_ARITY, <boost/mpl/arg.hpp>))
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74 #include BOOST_PP_ITERATE()
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77 # undef AUX778076_ARG_N_DEFAULT_PARAMS
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79 BOOST_MPL_AUX_NONTYPE_ARITY_SPEC(1,int,arg)
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81 BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_CLOSE
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83 #endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
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84 #endif // BOOST_MPL_ARG_HPP_INCLUDED
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89 #define i_ BOOST_PP_FRAME_ITERATION(1)
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93 template<> struct arg<i_>
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95 BOOST_STATIC_CONSTANT(int, value = i_);
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96 typedef arg<BOOST_PP_INC(i_)> next;
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97 BOOST_MPL_AUX_ARG_TYPEDEF(na, tag)
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98 BOOST_MPL_AUX_ARG_TYPEDEF(na, type)
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101 AUX778076_ARG_N_DEFAULT_PARAMS(typename U, na)
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105 typedef BOOST_PP_CAT(U,i_) type;
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106 BOOST_MPL_AUX_ASSERT_NOT_NA(type);
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112 template<> struct arg<-1>
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114 BOOST_STATIC_CONSTANT(int, value = -1);
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115 BOOST_MPL_AUX_ARG_TYPEDEF(na, tag)
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116 BOOST_MPL_AUX_ARG_TYPEDEF(na, type)
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119 AUX778076_ARG_N_DEFAULT_PARAMS(typename U, na)
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124 BOOST_MPL_AUX_ASSERT_NOT_NA(type);
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131 #endif // BOOST_PP_IS_ITERATING
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