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1 /*=============================================================================
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2 Copyright (c) 2001-2011 Joel de Guzman
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3 Copyright (c) 2001-2011 Hartmut Kaiser
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4
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5 Distributed under the Boost Software License, Version 1.0. (See accompanying
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6 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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7 ==============================================================================*/
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8 #if !defined(BOOST_SPIRIT_LOCALS_APRIL_03_2007_0506PM)
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9 #define BOOST_SPIRIT_LOCALS_APRIL_03_2007_0506PM
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10
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11 #if defined(_MSC_VER)
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12 #pragma once
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13 #endif
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14
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15 #include <boost/preprocessor/repetition/enum_params_with_a_default.hpp>
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16 #include <boost/preprocessor/repetition/enum_params.hpp>
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17 #include <boost/mpl/vector.hpp>
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18 #include <boost/mpl/bool.hpp>
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19
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20 #if !defined(BOOST_SPIRIT_MAX_LOCALS_SIZE)
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21 # define BOOST_SPIRIT_MAX_LOCALS_SIZE 10
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22 #else
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23 # if BOOST_SPIRIT_MAX_LOCALS_SIZE < 3
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24 # undef BOOST_SPIRIT_MAX_LOCALS_SIZE
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25 # define BOOST_SPIRIT_MAX_LOCALS_SIZE 10
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26 # endif
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27 #endif
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28
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29 namespace boost { namespace spirit
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30 {
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31 ///////////////////////////////////////////////////////////////////////////
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32 template <
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33 BOOST_PP_ENUM_PARAMS_WITH_A_DEFAULT(
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34 BOOST_SPIRIT_MAX_LOCALS_SIZE, typename T, mpl::na)
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35 >
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36 struct locals
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37 : mpl::vector<BOOST_PP_ENUM_PARAMS(BOOST_SPIRIT_MAX_LOCALS_SIZE, T)> {};
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38
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39 ///////////////////////////////////////////////////////////////////////////
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40 namespace detail
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41 {
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42 template <typename T>
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43 struct is_locals
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44 : mpl::false_
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45 {};
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46
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47 template <BOOST_PP_ENUM_PARAMS(BOOST_SPIRIT_MAX_LOCALS_SIZE, typename T)>
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48 struct is_locals<locals<BOOST_PP_ENUM_PARAMS(BOOST_SPIRIT_MAX_LOCALS_SIZE, T)> >
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49 : mpl::true_
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50 {};
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51 }
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52 }}
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53
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54 #endif
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