private void checkCompositeSkylarkObjectSafe(Object object) {
if (object instanceof SkylarkApiProvider) {
return;
} else if (object instanceof SkylarkList) {
SkylarkList list = (SkylarkList) object;
if (list == SkylarkList.EMPTY_LIST
|| isSimpleSkylarkObjectSafe(list.getContentType().getType())) {
// Try not to iterate over the list if avoidable.
return;
}
// The list can be a tuple or a list of composite items.
for (Object listItem : list) {
checkSkylarkObjectSafe(listItem);
}
return;
} else if (object instanceof SkylarkNestedSet) {
// SkylarkNestedSets cannot have composite items.
Class<?> contentType = ((SkylarkNestedSet) object).getContentType().getType();
if (!contentType.equals(Object.class) && !isSimpleSkylarkObjectSafe(contentType)) {
throw new IllegalArgumentException(EvalUtils.getDataTypeName(contentType));
}
return;
} else if (object instanceof Map<?, ?>) {
for (Map.Entry<?, ?> entry : ((Map<?, ?>) object).entrySet()) {
checkSkylarkObjectSafe(entry.getKey());
checkSkylarkObjectSafe(entry.getValue());
}
return;
} else if (object instanceof ClassObject) {
ClassObject struct = (ClassObject) object;
for (String key : struct.getKeys()) {
checkSkylarkObjectSafe(struct.getValue(key));
}
return;
}
throw new IllegalArgumentException(EvalUtils.getDataTypeName(object));
}