RFR: 8294982: Implementation of Classfile API [v20]

[Adam Sotona]

On Thu, 16 Feb 2023 14:24:21 GMT, Maurizio Cimadamore <mcimadamore at openjdk.org> wrote:

>> Adam Sotona has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   added 4-byte Unicode text to Utf8EntryTest
>
> src/java.base/share/classes/jdk/internal/classfile/impl/DirectCodeBuilder.java line 649:
> 
>> 647:             if (parentMap == null)
>> 648:                 parentMap = new IdentityHashMap<>();
>> 649:             int[] table = parentMap.computeIfAbsent(parent, new Function<CodeAttribute, int[]>() {
> 
> Can use a lambda here?

I'll have to add relevant comment here.
There are many places in the Classfile API, which are on critical JDK bootstrap path in the follow-up integrations and using lambdas or method references would cause stack overflow during JDK bootstrap.
Using other words - these fragments cannot use lambdas as they suppose to generate lambdas for JDK ;)

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PR: https://git.openjdk.org/jdk/pull/10982