ceph/src/boost/libs/proto/include/boost/proto/transform/detail/default_function_impl.hpp

   1 #if !defined(BOOST_PROTO_DONT_USE_PREPROCESSED_FILES)
   2
   3     #include <boost/proto/transform/detail/preprocessed/default_function_impl.hpp>
   4
   5 #elif !defined(BOOST_PP_IS_ITERATING)
   6
   7     #define BOOST_PROTO_DEF_FUN_INVOKE_ARG(Z, M, DATA)                                              \
   8         BOOST_PROTO_DEFAULT_EVAL(Z, BOOST_PP_ADD(M, 2), DATA)
   9
  10     #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
  11         #pragma wave option(preserve: 2, line: 0, output: "preprocessed/default_function_impl.hpp")
  12     #endif
  13
  14     ///////////////////////////////////////////////////////////////////////////////
  15     /// \file default_function_impl.hpp
  16     /// Contains definition of the default_function_impl, the implementation of the
  17     /// _default transform for function-like nodes.
  18     //
  19     //  Copyright 2008 Eric Niebler. Distributed under the Boost
  20     //  Software License, Version 1.0. (See accompanying file
  21     //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  22
  23     #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
  24         #pragma wave option(preserve: 1)
  25     #endif
  26
  27     #define BOOST_PP_ITERATION_PARAMS_1                                                             \
  28         (3, (3, BOOST_PROTO_MAX_ARITY, <boost/proto/transform/detail/default_function_impl.hpp>))
  29     #include BOOST_PP_ITERATE()
  30
  31     #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
  32         #pragma wave option(output: null)
  33     #endif
  34
  35     #undef BOOST_PROTO_DEF_FUN_INVOKE_ARG
  36
  37 #else
  38
  39     #define N BOOST_PP_ITERATION()
  40
  41     template<typename Grammar, typename Expr, typename State, typename Data>
  42     struct default_function_impl<Grammar, Expr, State, Data, N>
  43       : transform_impl<Expr, State, Data>
  44     {
  45         BOOST_PP_REPEAT(N, BOOST_PROTO_DEFAULT_EVAL_TYPE, Expr)
  46
  47         typedef
  48             typename proto::detail::result_of_fixup<r0>::type
  49         function_type;
  50
  51         typedef
  52             typename BOOST_PROTO_RESULT_OF<
  53                 function_type(BOOST_PP_ENUM_SHIFTED_PARAMS(N, r))
  54             >::type
  55         result_type;
  56
  57         result_type operator ()(
  58             typename default_function_impl::expr_param e
  59           , typename default_function_impl::state_param s
  60           , typename default_function_impl::data_param d
  61         ) const
  62         {
  63             return this->invoke(e, s, d, is_member_function_pointer<function_type>());
  64         }
  65
  66     private:
  67         result_type invoke(
  68             typename default_function_impl::expr_param e
  69           , typename default_function_impl::state_param s
  70           , typename default_function_impl::data_param d
  71           , mpl::false_
  72         ) const
  73         {
  74             return BOOST_PROTO_DEFAULT_EVAL(~, 0, e)(
  75                 BOOST_PP_ENUM_SHIFTED(N, BOOST_PROTO_DEFAULT_EVAL, e)
  76             );
  77         }
  78
  79         result_type invoke(
  80             typename default_function_impl::expr_param e
  81           , typename default_function_impl::state_param s
  82           , typename default_function_impl::data_param d
  83           , mpl::true_
  84         ) const
  85         {
  86             BOOST_PROTO_USE_GET_POINTER();
  87             typedef typename detail::class_member_traits<function_type>::class_type class_type;
  88             return (
  89                 BOOST_PROTO_GET_POINTER(class_type, (BOOST_PROTO_DEFAULT_EVAL(~, 1, e))) ->*
  90                 BOOST_PROTO_DEFAULT_EVAL(~, 0, e)
  91             )(BOOST_PP_ENUM(BOOST_PP_SUB(N, 2), BOOST_PROTO_DEF_FUN_INVOKE_ARG, e));
  92         }
  93     };
  94
  95     #undef N
  96
  97 #endif