Re: toLua++ and C++ exceptions

["Olivier Delannoy" <olivier.delannoy@...>]

Hi Alexander,
CEGUI use a modified version of tolua ++ for this purpose. I think
most exceptions are already handle at the moment. If you still have
some uncaught exception please contact us on #cegui at
irc.freenode.net or on the forum we will fix this in the upcomming
release.


To discuss more the solution used in the modified version of tolua++,
we have add some properties to the description of a function or a
method to define whether the exception must  be transformed to an
error or a return value nil for pointer.


Regards
Olivier

On 6/13/06, Christian Vogler <Christian.Vogler@gallaudet.edu> wrote:
> Hi Alexander,
>
> > To do this we want to generate new bindings for this library with
> > patched toLua++ (using existing .pkg files). Where is the best place
> > to patch toLua++ to generate try-catch blocks around calls to bound
> > code?
>
> I did this for tolua 4.0, and tolua++ probably still uses the same mechanism.
> The places are in function.lua and variable.lua.
>
> In function.lua: right before the "-- check types" (open a try) and before
> the "output("}")" at the end of the same function (close a try).
>
> In variable.lua: right after the "output("{")" and before the "output("}")"
> (open and close a try, respectively).
>
> This is pretty easy to do ...
>
> One word of warning: doing things this way can really increase the size of the
> compiled binaries. IMHO, in the long run, it would be better to patch Lua to
> be exception-safe, and to compile it as C++ code. This topic has been raised
> several times on the list, so you should be able to find instructions
> somewhere.
>
> Best regards
> - Christian
> --
> Christian Vogler, Ph.D.
> Research Scientist, Gallaudet Research Institute
> http://gri.gallaudet.edu/~cvogler/
A