RFR: 7903947: Access to function pointers in structs could be streamlined

[Maurizio Cimadamore]

On Thu, 24 Jul 2025 13:52:05 GMT, Duncan Gittins <duncan.gittins at gmail.com> wrote:

> Will the use of ",functional" be the intended way to trigger this
> enhancement? I wonder whether last error capture could be built in with
> "--include-function funcname,erro" or "--include-function
> funcname,GetLastError"

Nice connection -- we do in fact have plans (at least in theory) to use this same mechanism for errno -- and maybe even to declare "disjoint enums" (e.g. enums that can be modelled as plain Java enums because you swear not to rely on low-level bitmask operation -- which is often the case if the enum you are modelling is just a "tag")

> This proposal makes it nicer to handle invokers. I generated my code with
> this change but as you'vr noted it does indeed lead to clashes using the
> proposed naming convention.

I think the issue is that the changes in this PR generate both setter and invoker -- and we should only emit the invoker.

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PR Comment: https://git.openjdk.org/jextract/pull/287#issuecomment-3113817281
PR Comment: https://git.openjdk.org/jextract/pull/287#issuecomment-3113821975