ceph/src/boost/libs/iostreams/include/boost/iostreams/detail/push.hpp

   1 // (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
   2 // (C) Copyright 2003-2007 Jonathan Turkanis
   3 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   4 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
   5
   6 // See http://www.boost.org/libs/iostreams for documentation.
   7
   8 #ifndef BOOST_IOSTREAMS_DETAIL_PUSH_HPP_INCLUDED
   9 #define BOOST_IOSTREAMS_DETAIL_PUSH_HPP_INCLUDED
  10
  11 #if defined(_MSC_VER)
  12 # pragma once
  13 #endif
  14
  15 #include <boost/config.hpp> // BOOST_MSVC.
  16 #include <boost/detail/workaround.hpp>
  17 #include <boost/iostreams/categories.hpp>
  18 #include <boost/iostreams/categories.hpp>
  19 #include <boost/iostreams/detail/adapter/range_adapter.hpp>
  20 #include <boost/iostreams/detail/config/wide_streams.hpp>
  21 #include <boost/iostreams/detail/enable_if_stream.hpp>
  22 #include <boost/iostreams/pipeline.hpp>
  23 #include <boost/iostreams/detail/push_params.hpp>
  24 #include <boost/iostreams/detail/resolve.hpp>
  25 #include <boost/mpl/bool.hpp>
  26 #include <boost/preprocessor/cat.hpp>
  27 #include <boost/preprocessor/control/iif.hpp>
  28 #include <boost/static_assert.hpp>
  29 #include <boost/type_traits/is_convertible.hpp>
  30
  31 //
  32 // Macro: BOOST_IOSTREAMS_DEFINE_PUSH_CONSTRUCTOR(name, mode, ch, helper).
  33 // Description: Defines overloads with name 'name' which forward to a function
  34 //      'helper' which takes a filter or devide by const reference.
  35 //
  36 #define BOOST_IOSTREAMS_DEFINE_PUSH_CONSTRUCTOR(name, mode, ch, helper) \
  37     BOOST_IOSTREAMS_DEFINE_PUSH_IMPL(name, mode, ch, helper, 0, ?) \
  38     /**/
  39
  40 //
  41 // Macro: BOOST_IOSTREAMS_DEFINE_PUSH(name, mode, ch, helper).
  42 // Description: Defines constructors which forward to a function
  43 //      'helper' which takes a filter or device by const reference.
  44 //
  45 #define BOOST_IOSTREAMS_DEFINE_PUSH(name, mode, ch, helper) \
  46     BOOST_IOSTREAMS_DEFINE_PUSH_IMPL(name, mode, ch, helper, 1, void) \
  47     /**/
  48
  49 //--------------------Definition of BOOST_IOSTREAMS_DEFINE_PUSH_IMPL----------//
  50
  51 #define BOOST_IOSTREAMS_ADAPT_STREAM(mode, ch, arg, helper, has_return) \
  52     this->helper( ::boost::iostreams::detail::resolve<mode, ch>(arg) \
  53                   BOOST_IOSTREAMS_PUSH_ARGS() ); \
  54     /**/
  55
  56 #if !BOOST_WORKAROUND(__BORLANDC__, < 0x600) \
  57     /**/
  58 # ifndef BOOST_IOSTREAMS_NO_STREAM_TEMPLATES
  59 #  define BOOST_IOSTREAMS_DEFINE_PUSH_IMPL(name, mode, ch, helper, has_return, result) \
  60     template<typename CharType, typename TraitsType> \
  61     BOOST_PP_IIF(has_return, result, explicit) \
  62     name(::std::basic_streambuf<CharType, TraitsType>& sb BOOST_IOSTREAMS_PUSH_PARAMS()) \
  63     { BOOST_IOSTREAMS_ADAPT_STREAM(mode, ch, sb, helper, has_return); } \
  64     template<typename CharType, typename TraitsType> \
  65     BOOST_PP_IIF(has_return, result, explicit) \
  66     name(::std::basic_istream<CharType, TraitsType>& is BOOST_IOSTREAMS_PUSH_PARAMS()) \
  67     { BOOST_STATIC_ASSERT((!is_convertible<mode, output>::value)); \
  68       BOOST_IOSTREAMS_ADAPT_STREAM(mode, ch, is, helper, has_return); } \
  69     template<typename CharType, typename TraitsType> \
  70     BOOST_PP_IIF(has_return, result, explicit) \
  71     name(::std::basic_ostream<CharType, TraitsType>& os BOOST_IOSTREAMS_PUSH_PARAMS()) \
  72     { BOOST_STATIC_ASSERT((!is_convertible<mode, input>::value)); \
  73       BOOST_IOSTREAMS_ADAPT_STREAM(mode, ch, os, helper, has_return); } \
  74     template<typename CharType, typename TraitsType> \
  75     BOOST_PP_IIF(has_return, result, explicit) \
  76     name(::std::basic_iostream<CharType, TraitsType>& io BOOST_IOSTREAMS_PUSH_PARAMS()) \
  77     { BOOST_IOSTREAMS_ADAPT_STREAM(mode, ch, io, helper, has_return); } \
  78     template<typename Iter> \
  79     BOOST_PP_IIF(has_return, result, explicit) \
  80     name(const iterator_range<Iter>& rng BOOST_IOSTREAMS_PUSH_PARAMS()) \
  81     { BOOST_PP_EXPR_IF(has_return, return) \
  82     this->helper( ::boost::iostreams::detail::range_adapter< \
  83                       mode, iterator_range<Iter> \
  84                   >(rng) \
  85                   BOOST_IOSTREAMS_PUSH_ARGS() ); } \
  86     template<typename Pipeline, typename Concept> \
  87     BOOST_PP_IIF(has_return, result, explicit) \
  88     name(const ::boost::iostreams::pipeline<Pipeline, Concept>& p) \
  89     { p.push(*this); } \
  90     template<typename T> \
  91     BOOST_PP_IIF(has_return, result, explicit) \
  92     name(const T& t BOOST_IOSTREAMS_PUSH_PARAMS() BOOST_IOSTREAMS_DISABLE_IF_STREAM(T)) \
  93     { this->helper( ::boost::iostreams::detail::resolve<mode, ch>(t) \
  94                     BOOST_IOSTREAMS_PUSH_ARGS() ); } \
  95     /**/
  96 # else // # ifndef BOOST_IOSTREAMS_NO_STREAM_TEMPLATES
  97 #  define BOOST_IOSTREAMS_DEFINE_PUSH_IMPL(name, mode, ch, helper, has_return, result) \
  98     BOOST_PP_IF(has_return, result, explicit) \
  99     name(::std::streambuf& sb BOOST_IOSTREAMS_PUSH_PARAMS()) \
 100     { BOOST_IOSTREAMS_ADAPT_STREAM(mode, ch, sb, helper, has_return); } \
 101     BOOST_PP_IF(has_return, result, explicit) \
 102     name(::std::istream& is BOOST_IOSTREAMS_PUSH_PARAMS()) \
 103     { BOOST_STATIC_ASSERT((!is_convertible<mode, output>::value)); \
 104       BOOST_IOSTREAMS_ADAPT_STREAM(mode, ch, is, helper, has_return); } \
 105     BOOST_PP_IF(has_return, result, explicit) \
 106     name(::std::ostream& os BOOST_IOSTREAMS_PUSH_PARAMS()) \
 107     { BOOST_STATIC_ASSERT((!is_convertible<mode, input>::value)); \
 108       BOOST_IOSTREAMS_ADAPT_STREAM(mode, ch, os, helper, has_return); } \
 109     BOOST_PP_IF(has_return, result, explicit) \
 110     name(::std::iostream& io BOOST_IOSTREAMS_PUSH_PARAMS()) \
 111     { BOOST_IOSTREAMS_ADAPT_STREAM(mode, ch, io, helper, has_return); } \
 112     template<typename Iter> \
 113     BOOST_PP_IF(has_return, result, explicit) \
 114     name(const iterator_range<Iter>& rng BOOST_IOSTREAMS_PUSH_PARAMS()) \
 115     { BOOST_PP_EXPR_IF(has_return, return) \
 116     this->helper( ::boost::iostreams::detail::range_adapter< \
 117                       mode, iterator_range<Iter> \
 118                   >(rng) \
 119                   BOOST_IOSTREAMS_PUSH_ARGS() ); } \
 120     template<typename Pipeline, typename Concept> \
 121     BOOST_PP_IF(has_return, result, explicit) \
 122     name(const ::boost::iostreams::pipeline<Pipeline, Concept>& p) \
 123     { p.push(*this); } \
 124     template<typename T> \
 125     BOOST_PP_EXPR_IF(has_return, result) \
 126     name(const T& t BOOST_IOSTREAMS_PUSH_PARAMS() BOOST_IOSTREAMS_DISABLE_IF_STREAM(T)) \
 127     { this->helper( ::boost::iostreams::detail::resolve<mode, ch>(t) \
 128                     BOOST_IOSTREAMS_PUSH_ARGS() ); } \
 129     /**/
 130 # endif // # ifndef BOOST_IOSTREAMS_NO_STREAM_TEMPLATES
 131 #else // #if VC6, VC7.0, Borland 5.x
 132 # define BOOST_IOSTREAMS_DEFINE_PUSH_IMPL(name, mode, ch, helper, has_return, result) \
 133     template<typename T> \
 134     void BOOST_PP_CAT(name, _msvc_impl) \
 135     ( ::boost::mpl::true_, const T& t BOOST_IOSTREAMS_PUSH_PARAMS() ) \
 136     { t.push(*this); } \
 137     template<typename T> \
 138     void BOOST_PP_CAT(name, _msvc_impl) \
 139     ( ::boost::mpl::false_, const T& t BOOST_IOSTREAMS_PUSH_PARAMS() ) \
 140     { this->helper( ::boost::iostreams::detail::resolve<mode, ch>(t) \
 141                     BOOST_IOSTREAMS_PUSH_ARGS() ); } \
 142     template<typename T> \
 143     BOOST_PP_IF(has_return, result, explicit) \
 144     name(const T& t BOOST_IOSTREAMS_PUSH_PARAMS()) \
 145     { \
 146         this->BOOST_PP_CAT(name, _msvc_impl) \
 147               ( ::boost::iostreams::detail::is_pipeline<T>(), \
 148                 t BOOST_IOSTREAMS_PUSH_ARGS() ); \
 149     } \
 150     /**/
 151 #endif // #if VC6, VC7.0, Borland 5.x
 152
 153 #endif // #ifndef BOOST_IOSTREAMS_DETAIL_PUSH_HPP_INCLUDED