boost/flyweight/flyweight_fwd.hpp

   1 /* Copyright 2006-2008 Joaquin M Lopez Munoz.
   2  * Distributed under the Boost Software License, Version 1.0.
   3  * (See accompanying file LICENSE_1_0.txt or copy at
   4  * http://www.boost.org/LICENSE_1_0.txt)
   5  *
   6  * See http://www.boost.org/libs/flyweight for library home page.
   7  */
   8
   9 #ifndef BOOST_FLYWEIGHT_FLYWEIGHT_FWD_HPP
  10 #define BOOST_FLYWEIGHT_FLYWEIGHT_FWD_HPP
  11
  12 #if defined(_MSC_VER)&&(_MSC_VER>=1200)
  13 #pragma once
  14 #endif
  15
  16 #include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
  17 #include <boost/detail/templated_streams.hpp>
  18 #include <boost/parameter/parameters.hpp>
  19 #include <boost/preprocessor/punctuation/comma.hpp>
  20 #include <iosfwd>
  21
  22 namespace boost{
  23
  24 namespace flyweights{
  25
  26 template<
  27   typename T,
  28   typename Arg1=parameter::void_,
  29   typename Arg2=parameter::void_,
  30   typename Arg3=parameter::void_,
  31   typename Arg4=parameter::void_,
  32   typename Arg5=parameter::void_
  33 >
  34 class flyweight;
  35
  36 #define BOOST_FLYWEIGHT_TYPENAME_TEMPL_ARGS(n)            \
  37 typename Arg##n##1,typename Arg##n##2,typename Arg##n##3, \
  38 typename Arg##n##4,typename Arg##n##5
  39 #define BOOST_FLYWEIGHT_TEMPL_ARGS(n) \
  40 Arg##n##1,Arg##n##2,Arg##n##3,Arg##n##4,Arg##n##5
  41
  42 template<
  43   typename T1,BOOST_FLYWEIGHT_TYPENAME_TEMPL_ARGS(1),
  44   typename T2,BOOST_FLYWEIGHT_TYPENAME_TEMPL_ARGS(2)
  45 >
  46 bool operator==(
  47   const flyweight<T1,BOOST_FLYWEIGHT_TEMPL_ARGS(1)>& x,
  48   const flyweight<T2,BOOST_FLYWEIGHT_TEMPL_ARGS(2)>& y);
  49
  50 template<
  51   typename T1,BOOST_FLYWEIGHT_TYPENAME_TEMPL_ARGS(1),
  52   typename T2,BOOST_FLYWEIGHT_TYPENAME_TEMPL_ARGS(2)
  53 >
  54 bool operator<(
  55   const flyweight<T1,BOOST_FLYWEIGHT_TEMPL_ARGS(1)>& x,
  56   const flyweight<T2,BOOST_FLYWEIGHT_TEMPL_ARGS(2)>& y);
  57
  58 #if !defined(BOOST_NO_FUNCTION_TEMPLATE_ORDERING)
  59 template<
  60   typename T1,BOOST_FLYWEIGHT_TYPENAME_TEMPL_ARGS(1),
  61   typename T2
  62 >
  63 bool operator==(
  64   const flyweight<T1,BOOST_FLYWEIGHT_TEMPL_ARGS(1)>& x,const T2& y);
  65
  66 template<
  67   typename T1,
  68   typename T2,BOOST_FLYWEIGHT_TYPENAME_TEMPL_ARGS(2)
  69 >
  70 bool operator==(
  71   const T1& x,const flyweight<T2,BOOST_FLYWEIGHT_TEMPL_ARGS(2)>& y);
  72
  73 template<
  74   typename T1,BOOST_FLYWEIGHT_TYPENAME_TEMPL_ARGS(1),
  75   typename T2
  76 >
  77 bool operator<(
  78   const flyweight<T1,BOOST_FLYWEIGHT_TEMPL_ARGS(1)>& x,const T2& y);
  79
  80 template<
  81   typename T1,
  82   typename T2,BOOST_FLYWEIGHT_TYPENAME_TEMPL_ARGS(2)
  83 >
  84 bool operator<(
  85   const T1& x,const flyweight<T2,BOOST_FLYWEIGHT_TEMPL_ARGS(2)>& y);
  86 #endif /* !defined(BOOST_NO_FUNCTION_TEMPLATE_ORDERING) */
  87
  88 #define BOOST_FLYWEIGHT_COMPLETE_COMP_OPS_DECL(t,a1,a2)                       \
  89 template<t>                                                                   \
  90 inline bool operator!=(const a1& x,const a2& y);                              \
  91                                                                               \
  92 template<t>                                                                   \
  93 inline bool operator>(const a1& x,const a2& y);                               \
  94                                                                               \
  95 template<t>                                                                   \
  96 inline bool operator>=(const a1& x,const a2& y);                              \
  97                                                                               \
  98 template<t>                                                                   \
  99 inline bool operator<=(const a1& x,const a2& y);                              \
 100
 101 BOOST_FLYWEIGHT_COMPLETE_COMP_OPS_DECL(
 102   typename T1 BOOST_PP_COMMA()
 103   BOOST_FLYWEIGHT_TYPENAME_TEMPL_ARGS(1) BOOST_PP_COMMA()
 104   typename T2 BOOST_PP_COMMA()
 105   BOOST_FLYWEIGHT_TYPENAME_TEMPL_ARGS(2),
 106   flyweight<
 107     T1 BOOST_PP_COMMA() BOOST_FLYWEIGHT_TEMPL_ARGS(1)
 108   >,
 109   flyweight<
 110     T2 BOOST_PP_COMMA() BOOST_FLYWEIGHT_TEMPL_ARGS(2)
 111   >)
 112
 113 #if !defined(BOOST_NO_FUNCTION_TEMPLATE_ORDERING)
 114 BOOST_FLYWEIGHT_COMPLETE_COMP_OPS_DECL(
 115   typename T1 BOOST_PP_COMMA()
 116   BOOST_FLYWEIGHT_TYPENAME_TEMPL_ARGS(1) BOOST_PP_COMMA()
 117   typename T2,
 118   flyweight<
 119     T1 BOOST_PP_COMMA() BOOST_FLYWEIGHT_TEMPL_ARGS(1)
 120   >,
 121   T2)
 122
 123 BOOST_FLYWEIGHT_COMPLETE_COMP_OPS_DECL(
 124   typename T1 BOOST_PP_COMMA()
 125   typename T2 BOOST_PP_COMMA()
 126   BOOST_FLYWEIGHT_TYPENAME_TEMPL_ARGS(2),
 127   T1,
 128   flyweight<
 129     T2 BOOST_PP_COMMA() BOOST_FLYWEIGHT_TEMPL_ARGS(2)
 130   >)
 131 #endif /* !defined(BOOST_NO_FUNCTION_TEMPLATE_ORDERING) */
 132
 133 template<typename T,BOOST_FLYWEIGHT_TYPENAME_TEMPL_ARGS(_)>
 134 inline void swap(
 135   flyweight<T,BOOST_FLYWEIGHT_TEMPL_ARGS(_)>& x,
 136   flyweight<T,BOOST_FLYWEIGHT_TEMPL_ARGS(_)>& y);
 137
 138 template<
 139   BOOST_TEMPLATED_STREAM_ARGS(ElemType,Traits)
 140   BOOST_TEMPLATED_STREAM_COMMA
 141   typename T,BOOST_FLYWEIGHT_TYPENAME_TEMPL_ARGS(_)
 142 >
 143 inline BOOST_TEMPLATED_STREAM(ostream,ElemType,Traits)& operator<<(
 144   BOOST_TEMPLATED_STREAM(ostream,ElemType,Traits)& out,
 145   const flyweight<T,BOOST_FLYWEIGHT_TEMPL_ARGS(_)>& x);
 146
 147 template<
 148   BOOST_TEMPLATED_STREAM_ARGS(ElemType,Traits)
 149   BOOST_TEMPLATED_STREAM_COMMA
 150   typename T,BOOST_FLYWEIGHT_TYPENAME_TEMPL_ARGS(_)
 151 >
 152 inline BOOST_TEMPLATED_STREAM(istream,ElemType,Traits)& operator>>(
 153   BOOST_TEMPLATED_STREAM(istream,ElemType,Traits)& in,
 154   flyweight<T,BOOST_FLYWEIGHT_TEMPL_ARGS(_)>& x);
 155
 156 } /* namespace flyweights */
 157
 158 using flyweights::flyweight;
 159
 160 } /* namespace boost */
 161
 162 #undef BOOST_FLYWEIGHT_COMPLETE_COMP_OPS_DECL
 163 #undef BOOST_FLYWEIGHT_TEMPL_ARGS
 164 #undef BOOST_FLYWEIGHT_TYPENAME_TEMPL_ARGS
 165
 166 #endif