ceph/src/boost/boost/proto/context/detail/default_eval.hpp

   1 #if !defined(BOOST_PROTO_DONT_USE_PREPROCESSED_FILES)
   2
   3     #include <boost/proto/context/detail/preprocessed/default_eval.hpp>
   4
   5 #elif !defined(BOOST_PP_IS_ITERATING)
   6
   7     #define BOOST_PROTO_DEFAULT_EVAL_SHIFTED(Z, M, DATA)                                            \
   8         BOOST_PROTO_DEFAULT_EVAL(Z, BOOST_PP_ADD(M, 2), DATA)                                       \
   9         /**/
  10
  11     #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
  12         #pragma wave option(preserve: 2, line: 0, output: "preprocessed/default_eval.hpp")
  13     #endif
  14
  15     ///////////////////////////////////////////////////////////////////////////////
  16     /// \file default_eval.hpp
  17     /// Contains specializations of the default_eval\<\> class template.
  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/context/detail/default_eval.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_DEFAULT_EVAL_SHIFTED
  36
  37 #else
  38
  39     #define N BOOST_PP_ITERATION()
  40
  41     template<typename Expr, typename Context>
  42     struct default_eval<Expr, Context, proto::tag::function, N>
  43     {
  44         typedef
  45             typename proto::detail::result_of_fixup<
  46                 BOOST_PROTO_DEFAULT_EVAL_TYPE(~, 0, Expr)
  47             >::type
  48         function_type;
  49
  50         typedef
  51             typename BOOST_PROTO_RESULT_OF<
  52                 function_type(BOOST_PP_ENUM_SHIFTED(N, BOOST_PROTO_DEFAULT_EVAL_TYPE, Expr))
  53             >::type
  54         result_type;
  55
  56         result_type operator ()(Expr &expr, Context &context) const
  57         {
  58             return this->invoke(expr, context, is_member_function_pointer<function_type>());
  59         }
  60
  61     private:
  62         result_type invoke(Expr &expr, Context &context, mpl::false_) const
  63         {
  64             return BOOST_PROTO_DEFAULT_EVAL(~, 0, expr)(
  65                 BOOST_PP_ENUM_SHIFTED(N, BOOST_PROTO_DEFAULT_EVAL, expr)
  66             );
  67         }
  68
  69         result_type invoke(Expr &expr, Context &context, mpl::true_) const
  70         {
  71             BOOST_PROTO_USE_GET_POINTER();
  72             typedef typename detail::class_member_traits<function_type>::class_type class_type;
  73             return (
  74                 BOOST_PROTO_GET_POINTER(class_type, (BOOST_PROTO_DEFAULT_EVAL(~, 1, expr))) ->*
  75                 BOOST_PROTO_DEFAULT_EVAL(~, 0, expr)
  76             )(BOOST_PP_ENUM(BOOST_PP_SUB(N, 2), BOOST_PROTO_DEFAULT_EVAL_SHIFTED, expr));
  77         }
  78     };
  79
  80     #undef N
  81
  82 #endif