[antlr-interest] AST rewrite bug C# target

[Floris van Nee]

Hi all,
I think I've come across another bug in the C# target when rewriting ASTs in
tree grammars.

I have included two files needed to reproduce the bug. The behaviour is
this:

It happens when a tree grammar is created with rules which return values,
like:

qualifier returns [List<string> ids]
: ^(fqual=FQUALIFIER IDENTIFIER+ ARRAY?)
{
ids = new List<String>() { "System", "Void" };
}
;

The C# compiler complains about the variable ids which it cannot find.
Also, when you reference the return value of such a rule somewhere, as in
qual=qualifier, you will have a variable qual with type qualifier_return,
instead of List<string>.

I guess this is a bug in the C# target of ANTLR - but if it's not, what
should I do to make the code compile correctly?
I am using the latest version of ANTLR (3.1.3)

Thanks,
Floris
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