ceph/src/boost/libs/proto/include/boost/proto/detail/args.hpp

   1 #if !defined(BOOST_PROTO_DONT_USE_PREPROCESSED_FILES)
   2
   3     #include <boost/proto/detail/preprocessed/args.hpp>
   4
   5 #elif !defined(BOOST_PP_IS_ITERATING)
   6
   7     /// INTERNAL ONLY
   8     ///
   9     #define BOOST_PROTO_DEFINE_CHILD_N(Z, N, DATA)                                              \
  10         typedef BOOST_PP_CAT(Arg, N) BOOST_PP_CAT(child, N);                                    \
  11         /**< INTERNAL ONLY */
  12
  13     /// INTERNAL ONLY
  14     ///
  15     #define BOOST_PROTO_DEFINE_VOID_N(z, n, data)                                               \
  16         typedef mpl::void_ BOOST_PP_CAT(child, n);                                              \
  17         /**< INTERNAL ONLY */
  18
  19     #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
  20         #pragma wave option(preserve: 2, line: 0, output: "preprocessed/args.hpp")
  21     #endif
  22
  23     ///////////////////////////////////////////////////////////////////////////////
  24     /// \file args.hpp
  25     /// Contains definition of \c term\<\>, \c list1\<\>, \c list2\<\>, ...
  26     /// class templates.
  27     //
  28     //  Copyright 2008 Eric Niebler. Distributed under the Boost
  29     //  Software License, Version 1.0. (See accompanying file
  30     //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  31
  32     #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
  33         #pragma wave option(preserve: 1)
  34     #endif
  35
  36     /// \brief A type sequence, for use as the 2nd parameter to the \c expr\<\> class template.
  37     ///
  38     /// A type sequence, for use as the 2nd parameter to the \c expr\<\> class template.
  39     /// The types in the sequence correspond to the children of a node in an expression tree.
  40     template< typename Arg0 >
  41     struct term
  42     {
  43         static const long arity = 0;
  44         typedef Arg0 child0;
  45         BOOST_PP_REPEAT_FROM_TO(1, BOOST_PROTO_MAX_ARITY, BOOST_PROTO_DEFINE_VOID_N, ~)
  46
  47         /// INTERNAL ONLY
  48         ///
  49         typedef Arg0 back_;
  50     };
  51
  52     #define BOOST_PP_ITERATION_PARAMS_1                                                         \
  53         (3, (1, BOOST_PROTO_MAX_ARITY, <boost/proto/detail/args.hpp>))
  54     #include BOOST_PP_ITERATE()
  55
  56     #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
  57         #pragma wave option(output: null)
  58     #endif
  59
  60     #undef BOOST_PROTO_DEFINE_VOID_N
  61     #undef BOOST_PROTO_DEFINE_CHILD_N
  62
  63 #else
  64
  65     #define N BOOST_PP_ITERATION()
  66
  67     /// \brief A type sequence, for use as the 2nd parameter to the \c expr\<\> class template.
  68     ///
  69     /// A type sequence, for use as the 2nd parameter to the \c expr\<\> class template.
  70     /// The types in the sequence correspond to the children of a node in an expression tree.
  71     template< BOOST_PP_ENUM_PARAMS(N, typename Arg) >
  72     struct BOOST_PP_CAT(list, N)
  73     {
  74         static const long arity = N;
  75         BOOST_PP_REPEAT(N, BOOST_PROTO_DEFINE_CHILD_N, ~)
  76         BOOST_PP_REPEAT_FROM_TO(N, BOOST_PROTO_MAX_ARITY, BOOST_PROTO_DEFINE_VOID_N, ~)
  77
  78         /// INTERNAL ONLY
  79         ///
  80         typedef BOOST_PP_CAT(Arg, BOOST_PP_DEC(N)) back_;
  81     };
  82
  83     #undef N
  84
  85 #endif