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3rdparty/boost_1_81_0/boost/dynamic_bitset/config.hpp 2.29 KB
63e88f80   Hu Chunming   提交三方库
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  // -----------------------------------------------------------
  //
  //   Copyright (c) 2001-2002 Chuck Allison and Jeremy Siek
  //        Copyright (c) 2003-2006, 2008 Gennaro Prota
  //
  // Distributed under the Boost Software License, Version 1.0.
  //    (See accompanying file LICENSE_1_0.txt or copy at
  //          http://www.boost.org/LICENSE_1_0.txt)
  //
  // -----------------------------------------------------------
  
  #ifndef BOOST_DYNAMIC_BITSET_CONFIG_HPP_GP_20040424
  #define BOOST_DYNAMIC_BITSET_CONFIG_HPP_GP_20040424
  
  #include "boost/config.hpp"
  #include "boost/detail/workaround.hpp"
  
  // support for pre 3.0 libstdc++ - thanks Phil Edwards!
  #if defined (__STL_CONFIG_H) && !defined (__STL_USE_NEW_IOSTREAMS)
  # define BOOST_OLD_IOSTREAMS
  #endif
  
  // no-op function to workaround gcc bug c++/8419
  //
  namespace boost { namespace detail {
      template <typename T> T make_non_const(T t) { return t; }
  }}
  
  #if defined(__GNUC__)
  # define BOOST_DYNAMIC_BITSET_WRAP_CONSTANT(expr) \
           (boost::detail::make_non_const(expr))
  #else
  # define BOOST_DYNAMIC_BITSET_WRAP_CONSTANT(expr) (expr)
  #endif
  
  //
  #if (defined BOOST_BORLANDC && BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x564)))  \
                               || (defined BOOST_NO_MEMBER_TEMPLATE_FRIENDS)
  #define BOOST_DYNAMIC_BITSET_DONT_USE_FRIENDS
  #endif
  
  // if we can't use friends then we simply expose private members
  //
  #if defined(BOOST_DYNAMIC_BITSET_DONT_USE_FRIENDS)
  #define BOOST_DYNAMIC_BITSET_PRIVATE public
  #else
  #define BOOST_DYNAMIC_BITSET_PRIVATE private
  #endif
  
  // A couple of macros to cope with libraries without locale
  // support. The first macro must be used to declare a reference
  // to a ctype facet. The second one to widen a char by using
  // that ctype object. If facets and locales aren't available
  // the first macro is a no-op and the second one just expands
  // to its parameter c.
  //
  #if defined (BOOST_USE_FACET)
  
  #define BOOST_DYNAMIC_BITSET_CTYPE_FACET(ch, name, loc)     \
              const std::ctype<ch> & name =                   \
              BOOST_USE_FACET(std::ctype<ch>, loc)         /**/
  
  #define BOOST_DYNAMIC_BITSET_WIDEN_CHAR(fac, c)             \
             (fac.widen(c))
  #else
  
  #define BOOST_DYNAMIC_BITSET_CTYPE_FACET(ch, name, loc) /**/
  #define BOOST_DYNAMIC_BITSET_WIDEN_CHAR(fac, c)          c
  
  #endif
  
  #endif // include guard