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3rdparty/boost_1_81_0/boost/foreach_fwd.hpp 1.66 KB
63e88f80   Hu Chunming   提交三方库
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  ///////////////////////////////////////////////////////////////////////////////
  // foreach.hpp header file
  //
  // Copyright 2010 Eric Niebler.
  // 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)
  // See http://www.boost.org/libs/foreach for documentation
  //
  // Credits:
  // Kazutoshi Satoda: for suggesting the need for a _fwd header for foreach's
  //                      customization points.
  
  #ifndef BOOST_FOREACH_FWD_HPP
  #define BOOST_FOREACH_FWD_HPP
  
  // This must be at global scope, hence the uglified name
  enum boost_foreach_argument_dependent_lookup_hack
  {
      boost_foreach_argument_dependent_lookup_hack_value
  };
  
  namespace boost
  {
  
  namespace foreach
  {
      ///////////////////////////////////////////////////////////////////////////////
      // boost::foreach::tag
      //
      typedef boost_foreach_argument_dependent_lookup_hack tag;
  
      ///////////////////////////////////////////////////////////////////////////////
      // boost::foreach::is_lightweight_proxy
      //   Specialize this for user-defined collection types if they are inexpensive to copy.
      //   This tells BOOST_FOREACH it can avoid the rvalue/lvalue detection stuff.
      template<typename T>
      struct is_lightweight_proxy;
  
      ///////////////////////////////////////////////////////////////////////////////
      // boost::foreach::is_noncopyable
      //   Specialize this for user-defined collection types if they cannot be copied.
      //   This also tells BOOST_FOREACH to avoid the rvalue/lvalue detection stuff.
      template<typename T>
      struct is_noncopyable;
  
  } // namespace foreach
  
  } // namespace boost
  
  #endif