[foreign-jextract] RFR: 8261906: Improve jextract support for virtual functions [v6]

[Maurizio Cimadamore]

On Fri, 5 Mar 2021 17:19:45 GMT, Maurizio Cimadamore <mcimadamore at openjdk.org> wrote:

>>> But that could only happen inside a function body - unless I'm missing something?
>> 
>> Yeah, I think that's correct.
>
> Then I think I'll settle on a map from String to FunctionalInterfaceBuilder

Actually, I did better and added a map from the delegated type to the functional class name - since both declaration and type support deep equality.

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PR: https://git.openjdk.java.net/panama-foreign/pull/456