ANSI C++ and VTK

[Will Schroeder]

Another note: I found while testing today that the wrapping code needs to be modified
(it's including some files, etc.) The bigger deal is that PrintSelf is now being wrapped
(because its signature goes from PrintSelf(ostream, vtkIndent) to PrintSelf(vtkOstream,vtkIndent)
which the wrapper now thinks it can wrap.) So to make a long story short I am modifying 
vtkParse.l to handle vtkOstream, vtkIstream, etc....

Will


>Hi Folks-
>
>
>I've been working on some changes (with Bill Hoffman's assistance) to make 
>vtk ANSI C++ compliant (meaning we can start mixing in STL). While the 
>changes are simple, they are pervasive since the majority of files in the 
>system are touched. I'd like feedback on what's been done as described in 
>the following. I'd also like to schedule a date next week for 
>check-in....it's likely to be messy so we ought to plan for a couple of 
>days of instability.
>
>
>1. Creation of several typedefs and #defines, and inclusion of the correct 
>headers as follows. These are placed into a new header file called 
>vtkSystemIncludes.h. ANSI C++ is enabled by defining VTK_USE_ANSI_STDLIB. 
>(Note: I pulled some of the #includes out of the vtkWin32Header.h file.)
>
>
>#if defined(_WIN32) || defined(WIN32)
>
>
>// Handle changes from ANSI C++
>#ifdef VTK_USE_ANSI_STDLIB
>#include <iostream>
>#include <ostrstream>
>#include <fstream>
>typedef std::ostream vtkOstream;
>typedef std::istream vtkIstream;
>#define vtkEndl std::endl
>typedef std::ostrstream vtkOstrstream;
>typedef std::istrstream vtkIstrstream;
>#define vtkEnds std::ends
>typedef std::ifstream vtkIfstream;
>typedef std::ofstream vtkOfstream;
>
>
>#else
>#include <iostream.h>
>#include <strstrea.h>
>#include <fstream.h>
>typedef ostream vtkOstream;
>typedef istream vtkIstream;
>#define vtkEndl endl
>typedef ostrstream vtkOstrstream;
>typedef istrstream vtkIstrstream;
>#define vtkEnds ends
>typedef ifstream vtkIfstream;
>typedef ofstream vtkOfstream;
>#endif
>
>
>//
>// UNIX specific stuff---------------------------------------------
>#else
>
>
>// Handle changes from ANSI C++
>#ifdef VTK_USE_ANSI_STDLIB
>#include <iostream>
>#include <strstream>
>#include <fstream>
>typedef std::ostream vtkOstream;
>typedef std::istream vtkIstream;
>#define vtkEndl std::endl
>typedef std::ostrstream vtkOstrstream;
>typedef std::istrstream vtkIstrstream;
>#define vtkEnds std::ends
>typedef std::ifstream vtkIfstream;
>typedef std::ofstream vtkOfstream;
>
>
>#else
>#include <iostream.h>
>#include <strstream.h>
>#include <fstream.h>
>typedef ostream vtkOstream;
>typedef istream vtkIstream;
>#define vtkEndl endl
>typedef ostrstream vtkOstrstream;
>typedef istrstream vtkIstrstream;
>#define vtkEnds ends
>typedef ifstream vtkIfstream;
>typedef ofstream vtkOfstream;
>#endif
>
>
>#endif
>
>
>(There are small differences between Windows and Unix as you can see.)
>
>
>2. Used a Perl script to change all the "ostream -> vtkOstream", "endl 
>->vtkEndl", etc. in .h & .cxx files (including examples).
>
>
>3. Removed all places where one of iostream, strstream, and fstream were 
>included, making sure that vtkSystemIncludes.h was used in its place.
>
>
>I haven't tested all the combinations as of yet...I'm going to do so over 
>the next couple of days (so there might be some bad goofs in the include 
>file). If you see anything, or have any comments, I'd appreciate it.
>
>
>Will