boost/interprocess/detail/preprocessor.hpp

   1 //////////////////////////////////////////////////////////////////////////////
   2 //
   3 // (C) Copyright Ion Gaztanaga 2008-2008. Distributed under the Boost
   4 // Software License, Version 1.0. (See accompanying file
   5 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6 //
   7 // See http://www.boost.org/libs/interprocess for documentation.
   8 //
   9 //////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef BOOST_INTERPROCESS_DETAIL_PREPROCESSOR_HPP
  12 #define BOOST_INTERPROCESS_DETAIL_PREPROCESSOR_HPP
  13
  14 #if (defined _MSC_VER) && (_MSC_VER >= 1200)
  15 #  pragma once
  16 #endif
  17
  18 #include <boost/interprocess/detail/config_begin.hpp>
  19 #include <boost/interprocess/detail/workaround.hpp>
  20
  21 #ifdef BOOST_INTERPROCESS_PERFECT_FORWARDING
  22 #error "This file is not needed when perfect forwarding is available"
  23 #endif
  24
  25 #include <boost/preprocessor/iteration/local.hpp>
  26 #include <boost/preprocessor/repetition/enum_params.hpp>
  27 #include <boost/preprocessor/cat.hpp>
  28 #include <boost/preprocessor/repetition/enum.hpp>
  29 #include <boost/preprocessor/repetition/repeat.hpp>
  30
  31 #define BOOST_INTERPROCESS_MAX_CONSTRUCTOR_PARAMETERS 10
  32
  33 //Note:
  34 //We define template parameters as const references to
  35 //be able to bind temporaries. After that we will un-const them.
  36 //This cast is ugly but it is necessary until "perfect forwarding"
  37 //is achieved in C++0x. Meanwhile, if we want to be able to
  38 //bind rvalues with non-const references, we have to be ugly
  39 #ifdef BOOST_HAS_RVALUE_REFS
  40    #define BOOST_INTERPROCESS_PP_PARAM_LIST(z, n, data) \
  41    BOOST_PP_CAT(P, n) && BOOST_PP_CAT(p, n) \
  42    //!
  43 #else
  44    #define BOOST_INTERPROCESS_PP_PARAM_LIST(z, n, data) \
  45    const BOOST_PP_CAT(P, n) & BOOST_PP_CAT(p, n) \
  46    //!
  47 #endif
  48
  49 #ifdef BOOST_HAS_RVALUE_REFS
  50    #define BOOST_INTERPROCESS_PARAM(U, u) \
  51    U && u \
  52    //!
  53 #else
  54    #define BOOST_INTERPROCESS_PARAM(U, u) \
  55    const U & u \
  56    //!
  57 #endif
  58
  59 #ifdef BOOST_HAS_RVALUE_REFS
  60 #define BOOST_INTERPROCESS_AUX_PARAM_INIT(z, n, data) \
  61   BOOST_PP_CAT(m_p, n) (BOOST_PP_CAT(p, n))           \
  62 //!
  63 #else
  64 #define BOOST_INTERPROCESS_AUX_PARAM_INIT(z, n, data) \
  65   BOOST_PP_CAT(m_p, n) (const_cast<BOOST_PP_CAT(P, n) &>(BOOST_PP_CAT(p, n))) \
  66 //!
  67 #endif
  68
  69 #define BOOST_INTERPROCESS_AUX_PARAM_INC(z, n, data)   \
  70   BOOST_PP_CAT(++m_p, n)                        \
  71 //!
  72
  73 #ifdef BOOST_HAS_RVALUE_REFS
  74 #define BOOST_INTERPROCESS_AUX_PARAM_DEFINE(z, n, data)  \
  75   BOOST_PP_CAT(P, n) && BOOST_PP_CAT(m_p, n);            \
  76 //!
  77 #else
  78 #define BOOST_INTERPROCESS_AUX_PARAM_DEFINE(z, n, data)  \
  79   BOOST_PP_CAT(P, n) & BOOST_PP_CAT(m_p, n);             \
  80 //!
  81 #endif
  82
  83 #define BOOST_INTERPROCESS_PP_PARAM_FORWARD(z, n, data) \
  84 boost::interprocess::forward< BOOST_PP_CAT(P, n) >( BOOST_PP_CAT(p, n) ) \
  85 //!
  86
  87 #define BOOST_INTERPROCESS_PP_MEMBER_FORWARD(z, n, data) \
  88 boost::interprocess::forward< BOOST_PP_CAT(P, n) >( BOOST_PP_CAT(m_p, n) ) \
  89 //!
  90
  91 #define BOOST_INTERPROCESS_PP_MEMBER_IT_FORWARD(z, n, data) \
  92 BOOST_PP_CAT(*m_p, n) \
  93 //!
  94
  95 #include <boost/interprocess/detail/config_end.hpp>
  96
  97 #else
  98 #ifdef BOOST_INTERPROCESS_PERFECT_FORWARDING
  99 #error "This file is not needed when perfect forwarding is available"
 100 #endif
 101 #endif //#ifndef BOOST_INTERPROCESS_DETAIL_PREPROCESSOR_HPP