On Fri, 13 Mar 2026 23:35:40 GMT, Chen Liang <[email protected]> wrote:

>> Currently, the preview access flag enum constants are made available with a 
>> ClassFileFormatVersion.CURRENT_PREVIEW_FEATURES constant. Such a constant is 
>> questionable design.
>> 
>> We can have an approach to model preview access flags without such a 
>> constant, losing the ability for users to inspect through 
>> `ClassFileFormatVersion`, but otherwise keeping these interfaces intact:
>> 
>> 1. `accessFlags()` factory methods in core reflection
>> 2. Inspection of AccessFlag through ClassFile API
>> 3. The outputs of javap
>> 
>> The new design makes use of a new internal API, 
>> `jdk.internal.reflect.PreviewAccessFlags`. It replaces the AccessFlag APIs 
>> that previously took `ClassFileFormatVersion.CURRENT_PREVIEW_FEATURES`. This 
>> introduces a new qualified export from `java.base/jdk.internal.reflect` to 
>> `jdk.jdeps` for Javap usage.
>> 
>> In addition, with the recent awareness that core reflection/HotSpot only has 
>> one unique representation of modifiers, we can remove some contrived 
>> representation of access flags present in mainline (that required pulling 
>> class version from Class mirrors) and migrate to our simplified system that 
>> decodes the uniform representation used by hotspot.
>
> Chen Liang has updated the pull request incrementally with two additional 
> commits since the last revision:
> 
>  - Comment update
>  - Remove meaingless bouncer in Reflection

Thanks for the reviews!

-------------

PR Comment: https://git.openjdk.org/valhalla/pull/2209#issuecomment-4074776617

Reply via email to