DisambiguateTypeAnnotations.java 文件源码

/**
 * Moves type annotations in {@code annotations} to {@code type}, and adds any declaration
 * annotations on {@code type} to {@code declarationAnnotations}.
 */
private static Type disambiguate(
    Env<ClassSymbol, TypeBoundClass> env,
    ElementType declarationTarget,
    Type type,
    ImmutableList<AnnoInfo> annotations,
    Builder<AnnoInfo> declarationAnnotations) {
  // desugar @Repeatable annotations before disambiguating: annotation containers may target
  // a subset of the types targeted by their element annotation
  annotations = groupRepeated(env, annotations);
  ImmutableList.Builder<AnnoInfo> typeAnnotations = ImmutableList.builder();
  for (AnnoInfo anno : annotations) {
    Set<ElementType> target = env.get(anno.sym()).annotationMetadata().target();
    if (target.contains(ElementType.TYPE_USE)) {
      typeAnnotations.add(anno);
    }
    if (target.contains(declarationTarget)) {
      declarationAnnotations.add(anno);
    }
  }
  return addAnnotationsToType(type, typeAnnotations.build());
}