jdk.internal.classfile.impl

[Chen Liang]

Hi Mark,
LabelImpl::getBCI is accessible via CodeAttribute::labelToBci if you read from a class file. The code attribute can be accessed via
method.findAttribute(Attributes.CODE).orElseThrow()
If you want to use this to access the BCI for Labels in a CodeBuilder, unfortunately, that does not work. There is no guarantee that all Labels are assigned definite BCIs during that Consumer.

Regards, Chen
________________________________
From: classfile-api-dev <classfile-api-dev-retn at openjdk.org> on behalf of Mark Roberts <markro at cs.washington.edu>
Sent: Sunday, December 1, 2024 3:35 PM
To: Chen Liang <liangchenblue at gmail.com>; classfile-api-dev <classfile-api-dev at openjdk.org>
Subject: jdk.internal.classfile.impl


I have found some useful methods in jdk.internal.classfile.impl – such as LabelImpl::getBCI().  Are there any future plans to reorganize this package such that --add-exports java.base/jdk.internal.classfile.impl=ALL-UNNAMED will no longer work?



Thank you,

Mark




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