[GROOVY-9723] CLONE - ASTTest annotation has runtime retention and transform removes required member from AST

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Abandoned
• External issue URL: https://github.com/groovy/groovy-eclipse/issues/1155
• Assignee: Eric Milles
• Reporter: Eric Milles
• Created: 06/Sep/20 09:43
• Updated: 22/May/22 10:45
• Resolved: 22/May/22 10:45

Description

Description below is for GROOVY-9702 which is fixed in master. This issue is to explore a partial non-breaking fix for Groovy 3 (and maybe 2.5).

=============

Consider the following:

import groovy.transform.*
import org.codehaus.groovy.ast.*
import static org.codehaus.groovy.transform.stc.StaticTypesMarker.*

class C {
  void m() {
    def that = this;
    { ->
      @ASTTest(phase=INSTRUCTION_SELECTION, value={
        ClassNode type = node.getNodeMetaData(INFERRED_TYPE)
        assert type?.name == 'C'
      })
      def ref = getThisObject()
      assert ref == that
    }()
  }
}

This is a typical use of @ASTTest. When compiled, the test annotation is retained in the class file, which is unnecessary. When the transform class runs, it removes the "value" member from the AST, which is causing compiler errors down the line when ExtendedVerifier runs AnnotationVisitor. Also, the variable scope of the test closure is still connected to the class and module, so code completion is making proposals for class members which will not be there at run-time.

This was originally investigated from the IDE side (see linked issue).

https://user-images.githubusercontent.com/18193802/90964420-fd51c800-e485-11ea-8349-c0f89e04561a.png

Issue Links

• is a clone of: GROOVY-9702 ASTTest annotation has runtime retention and transform removes required member from AST