ceph/src/boost/libs/proto/include/boost/proto/context/detail/null_eval.hpp

   1 #if !defined(BOOST_PROTO_DONT_USE_PREPROCESSED_FILES)
   2
   3     #include <boost/proto/context/detail/preprocessed/null_eval.hpp>
   4
   5 #elif !defined(BOOST_PP_IS_ITERATING)
   6
   7     #define BOOST_PROTO_EVAL_N(Z, N, DATA)                                                          \
   8         proto::eval(proto::child_c<N>(expr), ctx);                                                  \
   9         /**/
  10
  11     #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
  12         #pragma wave option(preserve: 2, line: 0, output: "preprocessed/null_eval.hpp")
  13     #endif
  14
  15     ///////////////////////////////////////////////////////////////////////////////
  16     /// \file null_eval.hpp
  17     /// Contains specializations of the null_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, (1, BOOST_PROTO_MAX_ARITY, <boost/proto/context/detail/null_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_EVAL_N
  36
  37 #else
  38
  39     #define N BOOST_PP_ITERATION()
  40
  41     template<typename Expr, typename Context>
  42     struct null_eval<Expr, Context, N>
  43     {
  44         typedef void result_type;
  45
  46         void operator ()(Expr &expr, Context &ctx) const
  47         {
  48             BOOST_PP_REPEAT(N, BOOST_PROTO_EVAL_N, ~)
  49         }
  50     };
  51
  52     #undef N
  53
  54 #endif