ACE/ace/iosfwd.h

   1 // -*- C++ -*-
   2
   3 //=============================================================================
   4 /**
   5  *  @file    iosfwd.h
   6  *
   7  *  @author Irfan Pyarali
   8  *
   9  *  This file contains the portability ugliness for the Standard C++
  10  *  Library.  As implementations of the "standard" emerge, this file
  11  *  will need to be updated.
  12  *
  13  *  This files deals with forward declaration for the stream
  14  *  classes.  Remember that since the new Standard C++ Library code
  15  *  for streams uses templates, simple forward declaration will not
  16  *  work.
  17  */
  18 //=============================================================================
  19
  20
  21 #ifndef ACE_IOSFWD_H
  22 #define ACE_IOSFWD_H
  23
  24 #include /**/ "ace/pre.h"
  25
  26 #include /**/ "ace/config-all.h"
  27
  28 #if !defined (ACE_LACKS_PRAGMA_ONCE)
  29 # pragma once
  30 #endif /* ACE_LACKS_PRAGMA_ONCE */
  31
  32 // We except that each platform does support std streams
  33 #define ACE_HAS_CPP98_IOSTREAMS 1
  34
  35 #if !defined (ACE_LACKS_IOSTREAM_TOTALLY)
  36
  37 #if !defined (ACE_USES_OLD_IOSTREAMS)
  38 #   include /**/ <iosfwd>
  39 #else
  40   // @note If these forward declarations don't work (e.g. aren't
  41   //       portable), we may have to include "ace/streams.h" as a last
  42   //       resort.  Doing so would defeat the purpose of this header,
  43   //       unfortunately.
  44   class ios;
  45   class streambuf;
  46   class istream;
  47   class ostream;
  48   class iostream;
  49   class filebuf;
  50   class ifstream;
  51   class ofstream;
  52   class fstream;
  53 #endif /* ! ACE_USES_OLD_IOSTREAMS */
  54
  55 #if !defined (ACE_USES_OLD_IOSTREAMS)
  56   // Make these available in the global name space
  57   using std::ios;
  58   using std::streambuf;
  59   using std::istream;
  60   using std::ostream;
  61   using std::iostream;
  62   using std::filebuf;
  63   using std::ifstream;
  64   using std::ofstream;
  65   using std::fstream;
  66 #endif /* ! ACE_USES_OLD_IOSTREAMS */
  67
  68 #include /**/ "ace/post.h"
  69
  70 #endif /* ACE_LACKS_IOSTREAM_TOTALLY */
  71
  72 #endif /* ACE_IOSFWD_H */