[Swig-devel] Nested class improvements

[William S F. <ws...@fu...>]

Anyone watching the svn commits would have noticed some commits I've 
made for nested classes. I havn't intended to add in nested class 
support, this is too large a task, but I have simply improved matters so 
that header files containing nested classes are no longer a show stopper.

The improvements are now:
- Remove syntax errors parsing nested classes mainly for C++ but also 
some C code. No doubt there are some obscure cases that don't parse, but 
I can't think of any more. If anyone has examples of nested classes that 
still result in syntax errors, let me know.
- C nested class support pretty much as it was but C++ nested class 
support now results in code that will always compile, including nested 
class templates. The resulting code is not necessarily particularly 
useful from a target language, but the goal is to give code that will 
always compile as first priority, like other areas in SWIG.
- It is possible now possible to generate code for C++ nested classes 
that is genuinely useful, given some additional user input, but it still 
comes with limitations. This is via the "nestedworkaround" feature.
- Nested class warnings can be suppressed for individual classes, via 
%warnfilter, previously they could only be disabled individually.
- The above should mean that it is no longer necessary to modify header 
files containing nested classes.
- Updated html documentation describing above - viewable here: 
http://swig.svn.sourceforge.net/viewvc/swig/trunk/Doc/Manual/SWIGPlus.html#SWIGPlus_nested_classes

The CHANGES.current file contains details of all the improvements. I 
don't intend to improve this any more, I've plenty more fish to fry, but 
clearly it can be improved further for anyone wishing to do so. In 
particular another workaround feature might feed C++ nested classes back 
into the scanner much like it does with C nested classes, thereby 
improving the nestedworkaround feature slightly. Of course, a volunteer 
to add in full nested class support will be most welcome.

William