text: 
  //  (C) Copyright Edward Diener 2011-2015
  //  Use, modification and distribution are subject to 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).
  
  #if !defined(BOOST_VMD_DETAIL_PARENS_HPP)
  #define BOOST_VMD_DETAIL_PARENS_HPP
  
  #include "../../preprocessor/control/iif.hpp"
  #include "../../preprocessor/punctuation/is_begin_parens.hpp"
  #include "../../preprocessor/variadic/elem.hpp"
  #include "../empty.hpp"
  #include "mods.hpp"
  #include "parens_split.hpp"
  #include "parens_common.hpp"
  
  #define BOOST_VMD_DETAIL_PARENS_PROCESS(vseq) \
      BOOST_PP_IIF \
        ( \
        BOOST_PP_IS_BEGIN_PARENS(vseq), \
        BOOST_VMD_DETAIL_BEGIN_PARENS, \
        BOOST_VMD_EMPTY \
        ) \
      (vseq) \
  /**/
  
  #define BOOST_VMD_DETAIL_PARENS(...) \
      BOOST_PP_IIF \
          ( \
          BOOST_VMD_DETAIL_MODS_IS_RESULT_AFTER \
              ( \
              BOOST_VMD_DETAIL_NEW_MODS(BOOST_VMD_ALLOW_AFTER,__VA_ARGS__) \
              ), \
          BOOST_VMD_DETAIL_PARENS_SPLIT, \
          BOOST_VMD_DETAIL_PARENS_PROCESS \
          ) \
      (BOOST_PP_VARIADIC_ELEM(0,__VA_ARGS__)) \
  /**/
  
  #define BOOST_VMD_DETAIL_PARENS_D(d,...) \
      BOOST_PP_IIF \
          ( \
          BOOST_VMD_DETAIL_MODS_IS_RESULT_AFTER \
              ( \
              BOOST_VMD_DETAIL_NEW_MODS_D(d,BOOST_VMD_ALLOW_AFTER,__VA_ARGS__) \
              ), \
          BOOST_VMD_DETAIL_PARENS_SPLIT, \
          BOOST_VMD_DETAIL_PARENS_PROCESS \
          ) \
      (BOOST_PP_VARIADIC_ELEM(0,__VA_ARGS__)) \
  /**/
  
  #endif /* BOOST_VMD_DETAIL_PARENS_HPP */
  