public static String getAttributeValue(
PsiAnnotation annotation, String attributeName, DefaultPolicy policy) {
final PsiAnnotationMemberValue value = getAnnotationMemberValue(annotation, attributeName);
if (value != null) {
if (value instanceof PsiClassObjectAccessExpression) {
final PsiType type = ((PsiClassObjectAccessExpression) value).getType();
if (type == null) {
return null;
}
return type.getCanonicalText();
} else {
final String text = value.getText();
return text.substring(1, text.length() - 1);
}
}
if (policy == DefaultPolicy.OWNER_IDENTIFIER_NAME) {
return PsiUtil.getName(getImmediateOwnerElement(annotation));
} else {
return null;
}
}