RFR: JDK-8285932 Implementation of JEP-430 String Templates (Preview) [v7]

[Jorn Vernee]

On Wed, 2 Nov 2022 17:21:11 GMT, Jorn Vernee <jvernee at openjdk.org> wrote:

>> Jim Laskey has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Add @SafeVarargs declarations
>
> src/java.base/share/classes/java/lang/runtime/TemplateSupport.java line 184:
> 
>> 182:         MethodHandle mh = MethodHandles.insertArguments(DEFAULT_PROCESS_MH, 0, fragments, processor);
>> 183:         mh = mh.withVarargs(true);
>> 184:         mh = mh.asType(type);
> 
> I suggest doing:
> Suggestion:
> 
>         mh = mh.asCollector(Object[].class, type.parameterCount());
>         mh = mh.asType(type);
> 
> Instead, as it is more straightforward in terms of the code that gets called. (the impl of `withVarargs` + `asType` does the same thing in a more roundabout way).

As a side note: I think we can add an overload to `asCollector` that takes a `MethodType`, and does the 2 lines above in one. (the array type would be the return type of the method type).

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PR: https://git.openjdk.org/jdk/pull/10889