RFR: 8285150: Improve tab completion for annotations [v4]

[Chen Liang]

On Mon, 8 Sep 2025 05:51:25 GMT, Jan Lahoda <jlahoda at openjdk.org> wrote:

>> When using types code like:
>> 
>> @Deprecated(
>> 
>> 
>> and presses `<tab>`, there should be a sensible completion, but currently there is nothing. This PR proposes to add code completion for annotation attributes.
>
> Jan Lahoda has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains nine commits:
> 
>  - Adding Test annotation
>  - Merge branch 'master' into JDK-8285150
>  - Merge branch 'master' into JDK-8285150
>  - Fixing completion prefix behavior
>  - Merge branch 'master' into JDK-8285150-dev2
>  - Improving the handling of annotation attributes that are annotations and enum constants.
>  - Merge branch 'master' into JDK-8285150
>  - Merge branch 'master' into JDK-8285150
>  - 8285150: Improve tab completion for annotations

test/langtools/jdk/jshell/ToolTabSnippetTest.java line 348:

> 346:     }
> 347: 
> 348:     public void testAnnotation() throws Exception {

We are now junit, needs `@Test`

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PR Review Comment: https://git.openjdk.org/jdk/pull/22840#discussion_r2331877308