On 7-9-2015 16:39, Adriano dos Santos Fernandes wrote:
> Hi!
>
> Idea behind cloop is to have descriptive idl file so that bindings for
> different types of languages would be generated automatically.
>
> Currently the idl grammar is simple and effective for C, C++ and Pascal.
>
> But we use intptr type for errors codes or strings.
>
> No matter how we improve the cloop grammar, one could not read/write
> this in Java.
>
> I think we should redesign the Status interface so one could read/write
> them in non native languages.
>
> BTW, I wonder, how could the Jaybird JNA interpret (read numbers and
> strings) status vectors? Or just it could not, always leaving the job
> for fb_interpret?

JNA can use pointers, and Jaybird does (with the old API). I don't use 
fb_interpret at all.

See for example (as part of status vector processing): 
https://github.com/FirebirdSQL/jaybird/blob/master/src/jna-client/org/firebirdsql/gds/ng/jna/JnaConnection.java#L110

The use of pointers is annoying, but not a big problem.

I don't really understand why you'd use a pointer for an error code 
though, that seems to be an unnecessary indirection.

Mark
-- 
Mark Rotteveel

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