Groovy script: annotations on script-level variable declarations do not parse correctly

[crankydillo]

• Seems related to Annotations on variable declarations are not parsed correctly in Groovy. #2538.
• First mentioned in this discussion.

This test added to rewrite-groovy/../AnnotationsTest.java will fail, but AFAIK should successfully parse.

    @Test
    void annotatedVariables() {
        rewriteRun(
          groovy(
            """
              @Foo abc=123
              """
          )
        );
    }

Debugging points a finger at GroovyParserVisitor#RewriteGroovyVisitor#visitDeclarationExpression.

What version of OpenRewrite are you using?

Currently running the test above on your main branch, but we are using 8.40.2.

Are you interested in contributing a fix to OpenRewrite?

I'm always interested, but hard to find time. I may give this a go, but hoping it's easy for your parser gurus.. If I can do something quickly, I'll do it!

[timtebeek]

Perhaps @jevanlingen can provide some guidance here; his solved quite a few Groovy parser issues lately, and this seems like a case of implied parenthesis in an annotation, although it could be ambiguous.

[crankydillo]

Based on glancing at #4832, there is no doubt @jevanlingen is better qualified than me:) But I think the issue is not with parens, it just doesn't do anything with annotations in the case I'm describing (annotations on top/script-level declarations).