ceph/src/boost/boost/function_types/function_arity.hpp

   1
   2 // (C) Copyright Tobias Schwinger
   3 //
   4 // Use modification and distribution are subject to the boost Software License,
   5 // Version 1.0. (See http://www.boost.org/LICENSE_1_0.txt).
   6
   7 //------------------------------------------------------------------------------
   8
   9 #ifndef BOOST_FT_FUNCTION_ARITY_HPP_INCLUDED
  10 #define BOOST_FT_FUNCTION_ARITY_HPP_INCLUDED
  11
  12 #include <boost/blank.hpp>
  13 #include <boost/mpl/if.hpp>
  14
  15 #include <boost/mpl/aux_/lambda_support.hpp>
  16
  17 #include <boost/function_types/is_callable_builtin.hpp>
  18 #include <boost/function_types/components.hpp>
  19
  20 namespace boost
  21 {
  22   namespace function_types
  23   {
  24     template<typename T> struct function_arity
  25       : mpl::if_
  26         < function_types::is_callable_builtin<T>
  27         , typename components<T>::function_arity, boost::blank
  28         >::type
  29     {
  30       BOOST_MPL_AUX_LAMBDA_SUPPORT(1,function_arity,(T))
  31     };
  32   }
  33 }
  34
  35 #endif
  36