# Package org.codehaus.groovy.transform

- Interface Summary
  Interface | Description
  --- | ---
  ASTTransformation | This class is instantiated and invoked when an AST transformation is activated.

- Class Summary
  Class | Description
  --- | ---
  ASTTransformationCollectorCodeVisitor | This visitor walks the AST tree and collects references to Annotations that are annotated themselves by `GroovyASTTransformation`.
  ASTTransformationVisitor | This class handles the invocation of the ASTAnnotationTransformation when it is encountered by a tree walk.
  CategoryASTTransformation | Handles generation of code for the @Category annotation.
  DelegateASTTransformation | Handles generation of code for the `@Delegate` annotation
  ImmutableASTTransformation | Handles generation of code for the @Immutable annotation.
  IndexedPropertyASTTransformation | Handles generation of code for the `@`IndexedProperty annotation.
  InheritConstructorsASTTransformation | Handles generation of code for the `@`InheritConstructors annotation.
  LazyASTTransformation | Handles generation of code for the @Lazy annotation
  NewifyASTTransformation | Handles generation of code for the @Newify annotation.
  PackageScopeASTTransformation | Handles transformation for the @PackageScope annotation.
  SingletonASTTransformation | Handles generation of code for the @Singleton annotation
  SynchronizedASTTransformation | Handles generation of code for the `@`Synchronized annotation.

- Annotation Types Summary
  Annotation Type | Description
  --- | ---
  GroovyASTTransformation | This is an annotation on a class, currently just `ASTTransformation`.
  GroovyASTTransformationClass | This is an annotation on some item that indicates that an associated transform classes should be executed.