boost/dynamic_bitset/config.hpp

   1 // -----------------------------------------------------------
   2 //
   3 //   Copyright (c) 2001-2002 Chuck Allison and Jeremy Siek
   4 //        Copyright (c) 2003-2006, 2008 Gennaro Prota
   5 //
   6 // Distributed under the Boost Software License, Version 1.0.
   7 //    (See accompanying file LICENSE_1_0.txt or copy at
   8 //          http://www.boost.org/LICENSE_1_0.txt)
   9 //
  10 // -----------------------------------------------------------
  11
  12 #ifndef BOOST_DYNAMIC_BITSET_CONFIG_HPP_GP_20040424
  13 #define BOOST_DYNAMIC_BITSET_CONFIG_HPP_GP_20040424
  14
  15 #include "boost/config.hpp"
  16 #include "boost/detail/workaround.hpp"
  17
  18 // support for pre 3.0 libstdc++ - thanks Phil Edwards!
  19 #if defined (__STL_CONFIG_H) && !defined (__STL_USE_NEW_IOSTREAMS)
  20 # define BOOST_OLD_IOSTREAMS
  21 #endif
  22
  23 // no-op function to workaround gcc bug c++/8419
  24 //
  25 namespace boost { namespace detail {
  26     template <typename T> T make_non_const(T t) { return t; }
  27 }}
  28
  29 #if defined(__GNUC__)
  30 # define BOOST_DYNAMIC_BITSET_WRAP_CONSTANT(expr) \
  31          (boost::detail::make_non_const(expr))
  32 #else
  33 # define BOOST_DYNAMIC_BITSET_WRAP_CONSTANT(expr) (expr)
  34 #endif
  35
  36 //
  37 #if (defined __BORLANDC__ && BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564)))  \
  38                              || (defined BOOST_NO_MEMBER_TEMPLATE_FRIENDS)
  39 #define BOOST_DYNAMIC_BITSET_DONT_USE_FRIENDS
  40 #endif
  41
  42 // if we can't use friends then we simply expose private members
  43 //
  44 #if defined(BOOST_DYNAMIC_BITSET_DONT_USE_FRIENDS)
  45 #define BOOST_DYNAMIC_BITSET_PRIVATE public
  46 #else
  47 #define BOOST_DYNAMIC_BITSET_PRIVATE private
  48 #endif
  49
  50 // A couple of macros to cope with libraries without locale
  51 // support. The first macro must be used to declare a reference
  52 // to a ctype facet. The second one to widen a char by using
  53 // that ctype object. If facets and locales aren't available
  54 // the first macro is a no-op and the second one just expands
  55 // to its parameter c.
  56 //
  57 #if defined (BOOST_USE_FACET)
  58
  59 #define BOOST_DYNAMIC_BITSET_CTYPE_FACET(ch, name, loc)     \
  60             const std::ctype<ch> & name =                   \
  61             BOOST_USE_FACET(std::ctype<ch>, loc)         /**/
  62
  63 #define BOOST_DYNAMIC_BITSET_WIDEN_CHAR(fac, c)             \
  64            (fac.widen(c))
  65 #else
  66
  67 #define BOOST_DYNAMIC_BITSET_CTYPE_FACET(ch, name, loc) /**/
  68 #define BOOST_DYNAMIC_BITSET_WIDEN_CHAR(fac, c)          c
  69
  70 #endif
  71
  72 #endif // include guard