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1 /*=============================================================================
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2 Copyright (c) 2006-2007 Tobias Schwinger
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3
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4 Use modification and distribution are subject to the Boost Software
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5 License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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6 http://www.boost.org/LICENSE_1_0.txt).
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7 ==============================================================================*/
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8
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9 #if !defined(BOOST_FUSION_FUNCTIONAL_ADAPTER_FUSED_FUNCTION_OBJECT_HPP_INCLUDED)
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10 #define BOOST_FUSION_FUNCTIONAL_ADAPTER_FUSED_FUNCTION_OBJECT_HPP_INCLUDED
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11
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12 #include <boost/type_traits/add_reference.hpp>
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13 #include <boost/config.hpp>
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14
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15 #include <boost/fusion/functional/adapter/detail/access.hpp>
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16 #include <boost/fusion/functional/invocation/invoke_function_object.hpp>
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17
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18 #if defined (BOOST_MSVC)
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19 # pragma warning(push)
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20 # pragma warning (disable: 4512) // assignment operator could not be generated.
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21 #endif
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22
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23 namespace boost { namespace fusion
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24 {
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25 template <class Function> class fused_function_object;
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26
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27 //----- ---- --- -- - - - -
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28
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29 template <class Function>
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30 class fused_function_object
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31 {
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32 Function fnc_transformed;
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33
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34 typedef typename detail::qf_c<Function>::type & func_const_fwd_t;
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35 typedef typename detail::qf<Function>::type & func_fwd_t;
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36
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37 public:
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38
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39 inline explicit fused_function_object(func_const_fwd_t f = Function())
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40 : fnc_transformed(f)
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41 { }
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42
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43 template <class Seq>
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44 inline typename result_of::invoke_function_object<func_const_fwd_t,
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45 Seq const>::type operator()(Seq const & s) const
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46 {
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47 return fusion::invoke_function_object<
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48 func_const_fwd_t >(this->fnc_transformed,s);
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49 }
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50
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51 template <class Seq>
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52 inline typename result_of::invoke_function_object<func_fwd_t,
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53 Seq const>::type
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54 operator()(Seq const & s)
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55 {
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56 return fusion::invoke_function_object<
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57 func_fwd_t >(this->fnc_transformed,s);
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58 }
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59
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60 template <class Seq>
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61 inline typename result_of::invoke_function_object<func_const_fwd_t,
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62 Seq>::type
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63 operator()(Seq & s) const
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64 {
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65 return fusion::invoke_function_object<
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66 func_const_fwd_t >(this->fnc_transformed,s);
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67 }
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68
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69 template <class Seq>
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70 inline typename result_of::invoke_function_object<func_fwd_t,Seq>::type
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71 operator()(Seq & s)
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72 {
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73 return fusion::invoke_function_object<
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74 func_fwd_t >(this->fnc_transformed,s);
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75 }
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76
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77 template <typename Sig>
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78 struct result;
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79
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80 template <class Self, class Seq>
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81 struct result< Self const (Seq) >
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82 : result_of::invoke_function_object<func_const_fwd_t,
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83 typename boost::remove_reference<Seq>::type >
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84 { };
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85
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86 template <class Self, class Seq>
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87 struct result< Self(Seq) >
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88 : result_of::invoke_function_object<func_fwd_t,
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89 typename boost::remove_reference<Seq>::type >
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90 { };
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91 };
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92
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93 }}
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94
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95 #if defined (BOOST_MSVC)
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96 # pragma warning(pop)
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97 #endif
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98
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99 #endif
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100
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