[foreign-jextract] RFR: 8258605: regression: jextract can not handle function prototypes as function arguments

[Maurizio Cimadamore]

On Thu, 17 Dec 2020 17:26:57 GMT, Athijegannathan Sundararajan <sundar at openjdk.org> wrote:

> Old fix is not applicable in the new code. But test brought and modified.

Added some comments to simplify the logic in OutputFactory

src/jdk.incubator.jextract/share/classes/jdk/internal/jextract/impl/OutputFactory.java line 364:

> 362:                     return getAsFunctionPointer(((Type.Delegated) type).type());
> 363:             }
> 364:         } else if (type instanceof Type.Function) {

I think the check before this can be simplified. Essentially, in this routine we should have three cases:

* we have found a function type -> return it
* we have found a delegate type -> recurse on the delegatee
* none of the above, return null

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PR: https://git.openjdk.java.net/panama-foreign/pull/424