Re: [Swig-user] [C#, Java] enum elements with the same name in different enums?

[Vadim Z. <vz...@ze...>]

On Wed, 02 Jun 2010 18:10:55 +0100 William S Fulton <ws...@fu...> wrote:

WSF> Vadim Zeitlin wrote:
WSF> >  Hello,
WSF> > 
WSF> >  Consider this (contrived) example:
WSF> > 
WSF> > 	% cat -n enum_with_same_name.i
WSF> > 	     1  %module enum_with_same_name;
WSF> > 	     2
WSF> > 	     3  %inline %{
WSF> > 	     4  enum Month { Jan, May, Dec };
WSF> > 	     5  enum Severity { May, Can, Must };
WSF> > 	     6  %}
WSF> This is illegal C/C++, so SWIG won't work with this invalid code.

 Sorry, I've simplified too much. The original C++ code does the equivalent
of

	enum Month { Month_Jan, Month_May, Month_Dec };
	enum Severity { Severity_May, ... };

but I use %rename to get rid of the common enum prefix (this works very
nicely in conjunction with %rxspencer/rxsmatch and I'd really like to see
RE support in the official SWIG version BTW, I wonder if 2.0 could
integrate it...) to avoid having to write Month.Month_May in C#. So I guess
this could be seen as not a bug but a feature request.

 FWIW I received an off list reply from David Piepgrass proposing the
following workaround

	namespace Dummy1 {
		enum Month { Jan, May, Dec };
	}
	namespace Dummy2 {
		enum Severity { May, Can, Must };
	}
	typedef Dummy1::Month Month;
	typedef Dummy2::Severity Severity;

But this would require changes to the original sources that I'd like to
avoid, my current

  %rename("%(rxspencer:[([A-Z][a-z]+)+_(.*)][@2])s",%$isenumitem) "";

works really well with the naming convention that we use. The only idea I
have so far is to use some "UniqueDummyPrefix@1__@2" as replacement and
then post-process SWIG output to get rid of everything up to and including
the double underscore. But this is really ugly so I'm still looking for any
better ideas.

 TIA,
VZ