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3rdparty/boost_1_81_0/boost/mpl/protect.hpp 1.21 KB
598bfd3f   Hu Chunming   提交_GLIBCXX_USE_CX...
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  #ifndef BOOST_MPL_PROTECT_HPP_INCLUDED
  #define BOOST_MPL_PROTECT_HPP_INCLUDED
  
  // Copyright Peter Dimov 2001
  // Copyright Aleksey Gurtovoy 2002-2004
  //
  // 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/mpl for documentation.
  
  // $Id$
  // $Date$
  // $Revision$
  
  #include <boost/mpl/aux_/arity.hpp>
  #include <boost/mpl/aux_/config/dtp.hpp>
  #include <boost/mpl/aux_/nttp_decl.hpp>
  #include <boost/mpl/aux_/na_spec.hpp>
  
  namespace boost { namespace mpl {
  
  template<
        typename BOOST_MPL_AUX_NA_PARAM(T)
      , int not_le_ = 0
      >
  struct protect : T
  {
  #if BOOST_WORKAROUND(__EDG_VERSION__, == 238)
      typedef mpl::protect type;
  #else
      typedef protect type;
  #endif
  };
  
  #if defined(BOOST_MPL_CFG_BROKEN_DEFAULT_PARAMETERS_IN_NESTED_TEMPLATES)
  namespace aux { 
  template< BOOST_MPL_AUX_NTTP_DECL(int, N), typename T >
  struct arity< protect<T>, N > 
      : arity<T,N>
  { 
  };
  } // namespace aux
  #endif
  
  BOOST_MPL_AUX_NA_SPEC_MAIN(1, protect)
  #if !defined(BOOST_MPL_CFG_NO_FULL_LAMBDA_SUPPORT)
  BOOST_MPL_AUX_NA_SPEC_TEMPLATE_ARITY(1, 1, protect)
  #endif
  
  }}
  
  #endif // BOOST_MPL_PROTECT_HPP_INCLUDED