dep/ACE_wrappers/ace/Versioned_Namespace.h

   1 // -*- C++ -*-
   2
   3 //=============================================================================
   4 /**
   5  * @file    Versioned_Namespace.h
   6  *
   7  * $Id$
   8  *
   9  * Versioned namespace support.
  10  *
  11  * Useful for preventing conflicts when using a third party library.
  12  *
  13  * @author Ossama Othman <ossama@dre.vanderbilt.edu>
  14  */
  15 //=============================================================================
  16
  17 #ifndef ACE_VERSIONED_NAMESPACE_H
  18 #define ACE_VERSIONED_NAMESPACE_H
  19
  20 #ifndef ACE_CONFIG_MACROS_H
  21 # error This header is only meant to be included by or after "ace/config-lite.h".
  22 #endif  /* !ACE_CONFIG_LITE_H */
  23
  24
  25 #if defined (ACE_HAS_VERSIONED_NAMESPACE) && ACE_HAS_VERSIONED_NAMESPACE == 1
  26
  27 # ifndef ACE_VERSIONED_NAMESPACE_NAME
  28 //#  include "ace/Version.h"
  29
  30 // Preprocessor symbols will not be expanded if they are
  31 // concatenated.  Force the preprocessor to expand them during the
  32 // argument prescan by calling a macro that itself calls another that
  33 // performs the actual concatenation.
  34 #  define ACE_MAKE_VERSIONED_NAMESPACE_NAME_IMPL(MAJOR,MINOR,BETA) ACE_ ## MAJOR ## _ ## MINOR ## _ ## BETA
  35 #  define ACE_MAKE_VERSIONED_NAMESPACE_NAME(MAJOR,MINOR,BETA) ACE_MAKE_VERSIONED_NAMESPACE_NAME_IMPL(MAJOR,MINOR,BETA)
  36 #  define ACE_VERSIONED_NAMESPACE_NAME ACE_MAKE_VERSIONED_NAMESPACE_NAME(ACE_MAJOR_VERSION,ACE_MINOR_VERSION,ACE_BETA_VERSION)
  37 # endif  /* !ACE_VERSIONED_NAMESPACE_NAME */
  38
  39 # define ACE_BEGIN_VERSIONED_NAMESPACE_DECL namespace ACE_VERSIONED_NAMESPACE_NAME {
  40 # define ACE_END_VERSIONED_NAMESPACE_DECL } \
  41   using namespace ACE_VERSIONED_NAMESPACE_NAME;
  42
  43 #else
  44
  45 # define ACE_VERSIONED_NAMESPACE_NAME
  46 # define ACE_BEGIN_VERSIONED_NAMESPACE_DECL
  47 # define ACE_END_VERSIONED_NAMESPACE_DECL
  48
  49 #endif  /* ACE_HAS_VERSIONED_NAMESPACE */
  50
  51 #endif  /* !ACE_VERSIONED_NAMESPACE_H */