boost/spirit/home/phoenix/operator/detail/mem_fun_ptr_eval.hpp

   1 /*=============================================================================
   2     Copyright (c) 2005-2007 Dan Marsden
   3     Copyright (c) 2005-2007 Joel de Guzman
   4
   5     Distributed under the Boost Software License, Version 1.0. (See accompanying
   6     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   7 ==============================================================================*/
   8 #ifndef BOOST_PP_IS_ITERATING
   9 #ifndef PHOENIX_OPERATOR_DETAIL_MEM_FUN_PTR_EVAL_HPP
  10 #define PHOENIX_OPERATOR_DETAIL_MEM_FUN_PTR_EVAL_HPP
  11
  12 #include <boost/spirit/home/phoenix/core/limits.hpp>
  13 #include <boost/spirit/home/phoenix/core/actor.hpp>
  14
  15 #include <boost/preprocessor/repetition/enum_params.hpp>
  16 #include <boost/preprocessor/repetition/enum_params_with_a_default.hpp>
  17 #include <boost/preprocessor/repetition/enum_binary_params.hpp>
  18 #include <boost/preprocessor/iteration/iterate.hpp>
  19 #include <boost/preprocessor/arithmetic/sub.hpp>
  20 #include <boost/preprocessor/arithmetic/dec.hpp>
  21
  22 #include <boost/mpl/void.hpp>
  23
  24 #include <boost/type_traits/function_traits.hpp>
  25
  26 #include <boost/get_pointer.hpp>
  27
  28 #include <boost/spirit/home/phoenix/operator/detail/mem_fun_ptr_return.hpp>
  29
  30 namespace boost { namespace phoenix {
  31
  32     struct mem_fun_ptr_eval
  33     {
  34         template<typename Env, typename PtrActor, typename MemFunPtrActor,
  35                  BOOST_PP_ENUM_PARAMS_WITH_A_DEFAULT(BOOST_PP_SUB(PHOENIX_MEMBER_LIMIT, 2), typename Arg, mpl::void_)>
  36
  37         struct result
  38             : detail::mem_fun_ptr_return<typename eval_result<MemFunPtrActor, Env>::type> { };
  39
  40         template<typename Rt, typename Env, typename PtrActor, typename MemFunPtrActor>
  41         static typename result<Env,PtrActor,MemFunPtrActor>::type
  42         eval(const Env& env, PtrActor& ptrActor, MemFunPtrActor& memFunPtrActor)
  43         {
  44             return (get_pointer(ptrActor.eval(env))->*memFunPtrActor.eval(env))();
  45         }
  46
  47 #define BOOST_PP_ITERATION_PARAMS_1                                                                                 \
  48         (3, (1, BOOST_PP_DEC(BOOST_PP_DEC(PHOENIX_MEMBER_LIMIT)), "boost/spirit/home/phoenix/operator/detail/mem_fun_ptr_eval.hpp"))
  49
  50 #include BOOST_PP_ITERATE()
  51
  52     };
  53 }}
  54
  55 #endif
  56
  57 #else
  58
  59 #define PHOENIX_ITERATION BOOST_PP_ITERATION()
  60
  61 #define PHOENIX_EVAL_ARG(z,n,_) arg ## n.eval(env)
  62
  63         template<typename Rt, typename Env, typename PtrActor, typename MemFunPtrActor,
  64                  BOOST_PP_ENUM_PARAMS(PHOENIX_ITERATION, typename Arg)>
  65         static typename result<Env,PtrActor,MemFunPtrActor, BOOST_PP_ENUM_PARAMS(PHOENIX_ITERATION,Arg)>::type
  66         eval(const Env& env, PtrActor& ptrActor, MemFunPtrActor& memFunPtrActor,
  67              BOOST_PP_ENUM_BINARY_PARAMS(PHOENIX_ITERATION, Arg, & arg))
  68         {
  69             return (get_pointer(ptrActor.eval(env))->*memFunPtrActor.eval(env))(
  70                 BOOST_PP_ENUM(PHOENIX_ITERATION,PHOENIX_EVAL_ARG,_));
  71         }
  72
  73 #undef PHOENIX_EVAL_ARG
  74 #undef PHOENIX_ITERATION
  75
  76 #endif