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1 /*==============================================================================
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2 Copyright (c) 2001-2010 Joel de Guzman
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3 Copyright (c) 2010 Thomas Heller
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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 #ifndef BOOST_PHOENIX_OBJECT_CONSTRUCT_HPP
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9 #define BOOST_PHOENIX_OBJECT_CONSTRUCT_HPP
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10
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11 #include <boost/phoenix/core/limits.hpp>
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12 #include <boost/phoenix/core/call.hpp>
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13 #include <boost/phoenix/core/expression.hpp>
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14 #include <boost/phoenix/core/meta_grammar.hpp>
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15 #include <boost/phoenix/object/detail/target.hpp>
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16 #include <boost/phoenix/support/iterate.hpp>
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17 #include <boost/preprocessor/repetition/repeat_from_to.hpp>
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18
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19 BOOST_PHOENIX_DEFINE_EXPRESSION_VARARG(
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20 (boost)(phoenix)(construct)
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21 , (proto::terminal<detail::target<proto::_> >)
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22 (meta_grammar)
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23 , BOOST_PHOENIX_COMPOSITE_LIMIT
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24 )
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25
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26 namespace boost { namespace phoenix
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27 {
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28 struct construct_eval
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29 {
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30 template <typename Sig>
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31 struct result;
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32
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33 template <typename This, typename A0, typename Context>
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34 struct result<This(A0, Context)>
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35 : detail::result_of::target<A0>
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36 {
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37 };
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38
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39 template <typename Target, typename Context>
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40 typename detail::result_of::target<Target>::type
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41 operator()(Target, Context const &) const
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42 {
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43 return typename detail::result_of::target<Target>::type();
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44 }
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45
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46 // Bring in the rest
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47 #include <boost/phoenix/object/detail/construct_eval.hpp>
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48
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49 };
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50
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51 template <typename Dummy>
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52 struct default_actions::when<rule::construct, Dummy>
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53 : call<construct_eval, Dummy>
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54 {};
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55
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56 template <typename T>
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57 inline
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58 typename expression::construct<detail::target<T> >::type const
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59 construct()
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60 {
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61 return
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62 expression::
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63 construct<detail::target<T> >::
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64 make(detail::target<T>());
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65 }
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66
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67 // Bring in the rest
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68 #include <boost/phoenix/object/detail/construct.hpp>
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69
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70 }}
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71
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72 #endif
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73
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