AnonymousCanBeLambdaInspection.java 文件源码

private static boolean hasRuntimeAnnotations(PsiMethod method) {
  PsiAnnotation[] annotations = method.getModifierList().getAnnotations();
  for (PsiAnnotation annotation : annotations) {
    PsiJavaCodeReferenceElement ref = annotation.getNameReferenceElement();
    PsiElement target = ref != null ? ref.resolve() : null;
    if (target instanceof PsiClass) {
      final PsiAnnotation retentionAnno = AnnotationUtil.findAnnotation((PsiClass)target, Retention.class.getName());
      if (retentionAnno != null) {
        PsiAnnotationMemberValue value = retentionAnno.findAttributeValue("value");
        if (value instanceof PsiReferenceExpression) {
          final PsiElement resolved = ((PsiReferenceExpression)value).resolve();
          if (resolved instanceof PsiField && RetentionPolicy.RUNTIME.name().equals(((PsiField)resolved).getName())) {
            final PsiClass containingClass = ((PsiField)resolved).getContainingClass();
            if (containingClass != null && RetentionPolicy.class.getName().equals(containingClass.getQualifiedName())) {
              return true;
            }
          }
        }
      }
    }
  }
  return false;
}