Package org.checkerframework.common.reflection

Class ClassValAnnotatedTypeFactory

java.lang.Object
org.checkerframework.framework.type.AnnotatedTypeFactory
org.checkerframework.framework.type.GenericAnnotatedTypeFactory<CFValue,CFStore,CFTransfer,CFAnalysis>
org.checkerframework.common.basetype.BaseAnnotatedTypeFactory
org.checkerframework.common.reflection.ClassValAnnotatedTypeFactory
All Implemented Interfaces:
AnnotationProvider
public class ClassValAnnotatedTypeFactory extends BaseAnnotatedTypeFactory
A type factory for the @ClassVal and @ClassBound annotations.

  • Field Details

  • Constructor Details

    • ClassValAnnotatedTypeFactory

      public ClassValAnnotatedTypeFactory(BaseTypeChecker checker)
      Create a new ClassValAnnotatedTypeFactory.
      Parameters:
      checker - the type-checker associated with this factory

  • Method Details

    • createSupportedTypeQualifiers

      protected Set<Class<? extends Annotation>> createSupportedTypeQualifiers()
      Description copied from class: AnnotatedTypeFactory
      Returns a mutable set of annotation classes that are supported by a checker.

      Subclasses may override this method to return a mutable set of their supported type qualifiers through one of the 5 approaches shown below.

      Subclasses should not call this method; they should call AnnotatedTypeFactory.getSupportedTypeQualifiers() instead.

      By default, a checker supports all annotations located in a subdirectory called qual that's located in the same directory as the checker. Note that only annotations defined with the @Target({ElementType.TYPE_USE}) meta-annotation (and optionally with the additional value of ElementType.TYPE_PARAMETER, but no other ElementType values) are automatically considered as supported annotations.

      To support a different set of annotations than those in the qual subdirectory, or that have other ElementType values, see examples below.

      In total, there are 5 ways to indicate annotations that are supported by a checker:

      1. Only support annotations located in a checker's qual directory:

        This is the default behavior. Simply place those annotations within the qual directory.

      2. Support annotations located in a checker's qual directory and a list of other annotations:

        Place those annotations within the qual directory, and override AnnotatedTypeFactory.createSupportedTypeQualifiers() by calling AnnotatedTypeFactory.getBundledTypeQualifiers(Class...) with a varargs parameter list of the other annotations. Code example: 

         @Override protected Set<Class<? extends Annotation>> createSupportedTypeQualifiers() {
      return getBundledTypeQualifiers(Regex.class, PartialRegex.class, RegexBottom.class, UnknownRegex.class);
  }
      3. Supporting only annotations that are explicitly listed: Override AnnotatedTypeFactory.createSupportedTypeQualifiers() and return a mutable set of the supported annotations. Code example: 
         @Override protected Set<Class<? extends Annotation>> createSupportedTypeQualifiers() {
      return new HashSet<Class<? extends Annotation>>(
              Arrays.asList(A.class, B.class));
  }
        The set of qualifiers returned by AnnotatedTypeFactory.createSupportedTypeQualifiers() must be a fresh, mutable set. The methods AnnotatedTypeFactory.getBundledTypeQualifiers(Class...) must return a fresh, mutable set
      Overrides:
      createSupportedTypeQualifiers in class AnnotatedTypeFactory
      Returns:
      the type qualifiers supported this processor, or an empty set if none

    • getClassNamesFromAnnotation

      public List<String> getClassNamesFromAnnotation(AnnotationMirror anno)
      Returns the list of classnames from @ClassBound or @ClassVal if anno is @ClassBound or @ClassVal, otherwise returns an empty list.
      Parameters:
      anno - any AnnotationMirror
      Returns:
      list of classnames in anno

    • createQualifierHierarchy

      protected QualifierHierarchy createQualifierHierarchy()
      Description copied from class: AnnotatedTypeFactory
      Returns the QualifierHierarchy to be used by this checker.

      The implementation builds the type qualifier hierarchy for the AnnotatedTypeFactory.getSupportedTypeQualifiers() using the meta-annotations found in them. The current implementation returns an instance of NoElementQualifierHierarchy.

      Subclasses must override this method if their qualifiers have elements; the method must return an implementation of QualifierHierarchy, such as ElementQualifierHierarchy.

      Overrides:
      createQualifierHierarchy in class AnnotatedTypeFactory
      Returns:
      a QualifierHierarchy for this type system

    • createTreeAnnotator

      protected TreeAnnotator createTreeAnnotator()
      Description copied from class: GenericAnnotatedTypeFactory
      Returns a TreeAnnotator that adds annotations to a type based on the contents of a tree.

      The default tree annotator is a ListTreeAnnotator of the following:

      1. PropagationTreeAnnotator: Propagates annotations from subtrees
      2. LiteralTreeAnnotator: Adds annotations based on QualifierForLiterals meta-annotations
      3. DependentTypesTreeAnnotator: Adapts dependent annotations based on context

      Subclasses may override this method to specify additional tree annotators, for example: 

       new ListTreeAnnotator(super.createTreeAnnotator(), new KeyLookupTreeAnnotator(this));
      Overrides:
      createTreeAnnotator in class GenericAnnotatedTypeFactory<CFValue,CFStore,CFTransfer,CFAnalysis>
      Returns:
      a tree annotator