Record component annotations with target=PARAMETER

[Gavin Bierman]

Now updated. (http://cr.openjdk.java.net/~gbierman/jep359/latest)

> On 19 Dec 2019, at 10:45, Gavin Bierman <gavin.bierman at oracle.com> wrote:
> 
> Well spotted Tagir. Updated spec on its way...
> 
>> On 17 Dec 2019, at 14:29, Vicente Romero <vicente.romero at oracle.com> wrote:
>> 
>> Hi Tagir,
>> 
>> Yes the spec should be updated, you are correct that `parameter` should be added here,
>> 
>> Thanks,
>> Vicente
>> 
>> On 12/17/19 5:10 AM, Tagir Valeev wrote:
>>> Hello!
>>> 
>>> Current records JLS spec draft [1] says:
>>> 
>>> a record component but T is not applicable to record component
>>> declarations, field declarations, method declarations, or type
>>> contexts.
>>> 
>>> However, javac doesn't fail if the annotation target is parameter:
>>> 
>>> import java.lang.annotation.*;
>>> 
>>> record Foo(@Anno int x) {}
>>> @Target(ElementType.PARAMETER)
>>> @interface Anno {}
>>> 
>>> This code compiles and the canonical constructor is annotated with
>>> Anno. To me, the javac behavior is expected and spec should be updated
>>> to include "parameters":
>>> 
>>> a record component but T is not applicable to record component
>>> declarations, field declarations, method declarations, parameters, or
>>> type contexts.
>>> 
>>> What do you think? I'm implementing error highlighting for records in
>>> IntelliJ now. Should I follow the spec or javac behavior?
>>> 
>>> With best regards,
>>> Tagir Valeev.
>>> 
>>> http://cr.openjdk.java.net/~gbierman/jep359/jep359-20191125/specs/records-jls.html#jls-9.7.4
>> 
>