ceph/src/boost/libs/phoenix/include/boost/phoenix/bind/bind_function.hpp

   1 /*=============================================================================
   2     Copyright (c) 2016 Kohei Takahashi
   3
   4     Distributed under the Boost Software License, Version 1.0. (See accompanying
   5     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6 ==============================================================================*/
   7
   8 #ifndef PHOENIX_BIND_BIND_FUNCTION_HPP
   9 #define PHOENIX_BIND_BIND_FUNCTION_HPP
  10
  11 #include <boost/phoenix/core/limits.hpp>
  12
  13 #if defined(BOOST_PHOENIX_NO_VARIADIC_BIND)
  14 # include <boost/phoenix/bind/detail/cpp03/bind_function.hpp>
  15 #else
  16
  17 #include <boost/phoenix/core/expression.hpp>
  18 #include <boost/phoenix/core/detail/function_eval.hpp>
  19
  20 namespace boost { namespace phoenix
  21 {
  22     namespace detail
  23     {
  24         template <typename RT, typename FP>
  25         struct function_ptr
  26         {
  27             typedef RT result_type;
  28
  29             function_ptr(FP fp_)
  30                 : fp(fp_) {}
  31
  32             template <typename... A>
  33             result_type operator()(A&... a) const
  34             {
  35                 return fp(a...);
  36             }
  37
  38             bool operator==(function_ptr const& rhs) const
  39             {
  40                 return fp == rhs.fp;
  41             }
  42
  43             template <typename RhsRT, typename RhsFP>
  44             bool operator==(function_ptr<RhsRT, RhsFP> const& /*rhs*/) const
  45             {
  46                 return false;
  47             }
  48
  49             FP fp;
  50         };
  51     } // namespace boost::phoenix::detail
  52
  53     template <typename RT, typename... T, typename... A>
  54     inline typename detail::expression::function_eval<
  55         detail::function_ptr<RT, RT (*)(T...)>
  56       , A...
  57     >::type const
  58     bind(RT (*f)(T...), A const&... a)
  59     {
  60         typedef detail::function_ptr<RT, RT (*)(T...)> fp_type;
  61         return detail::expression::function_eval<fp_type, A...>::make(fp_type(f), a...);
  62     }
  63 }} // namespace boost::phoenix
  64
  65 #endif
  66 #endif