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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkAlgorithm.h"
#include "vtkDataObject.h"
#include "vtkDeserializer.h"
#include "vtkInformation.h"
#include "vtkSerializer.h"
// clang-format off
#include "vtk_nlohmannjson.h"
#include VTK_NLOHMANN_JSON(json.hpp)
// clang-format on
extern "C"
{
/**
* Register the (de)serialization handlers of vtkAlgorithm
* @param ser a vtkSerializer instance
* @param deser a vtkDeserializer instance
*/
int RegisterHandlers_vtkAlgorithmSerDesHelper(void* ser, void* deser, void* invoker);
}
static nlohmann::json Serialize_vtkAlgorithm(vtkObjectBase* object, vtkSerializer* serializer)
{
using json = nlohmann::json;
if (auto* algorithm = vtkAlgorithm::SafeDownCast(object))
{
json state;
if (auto superSerializer = serializer->GetHandler(typeid(vtkAlgorithm::Superclass)))
{
state = superSerializer(object, serializer);
}
state["SuperClassNames"].push_back("vtkObject");
if (algorithm->GetNumberOfOutputPorts() > 0)
{
if (auto outputDataObject = algorithm->GetOutputDataObject(0))
{
state["OutputDataObject"] =
serializer->SerializeJSON(reinterpret_cast<vtkObjectBase*>(outputDataObject));
}
}
state["AbortExecute"] = algorithm->GetAbortExecute();
// the pipeline is servered here by capturing only the input data objects
// in the state.
auto& statesOfInputDataObjects = state["InputDataObjects"] = json::array();
for (int port = 0; port < algorithm->GetNumberOfInputPorts(); ++port)
{
auto stateOfInputDataObjects = json::array();
for (int index = 0; index < algorithm->GetNumberOfInputConnections(port); ++index)
{
auto* inputAlgorithm = algorithm->GetInputAlgorithm(port, index);
inputAlgorithm->Update();
auto* inputDataObject = algorithm->GetInputDataObject(port, index);
stateOfInputDataObjects.push_back(serializer->SerializeJSON(inputDataObject));
}
statesOfInputDataObjects.push_back(stateOfInputDataObjects);
}
state["Information"] =
serializer->SerializeJSON(reinterpret_cast<vtkObjectBase*>(algorithm->GetInformation()));
return state;
}
else
{
return {};
}
}
static void Deserialize_vtkAlgorithm(
const nlohmann::json& state, vtkObjectBase* object, vtkDeserializer* deserializer)
{
using json = nlohmann::json;
auto* algorithm = vtkAlgorithm::SafeDownCast(object);
if (!algorithm)
{
return;
}
VTK_DESERIALIZE_VALUE_FROM_STATE(AbortExecute, int, state, algorithm);
VTK_DESERIALIZE_VTK_OBJECT_FROM_STATE(
Information, vtkInformation, state, algorithm, deserializer);
{
const auto* context = deserializer->GetContext();
const auto iter = state.find("InputDataObjects");
if ((iter != state.end()) && !iter->is_null())
{
auto statesOfInputDataObjects = iter->get<json::array_t>();
if (algorithm->GetNumberOfInputPorts() != static_cast<int>(statesOfInputDataObjects.size()))
{
vtkWarningWithObjectMacro(context,
<< deserializer->GetObjectDescription()
<< " failed because number of input ports in state (" << statesOfInputDataObjects.size()
<< ") does not match for algorithm=" << algorithm->GetObjectDescription() << " ("
<< algorithm->GetNumberOfInputPorts() << ")");
return;
}
for (int port = 0; port < algorithm->GetNumberOfInputPorts(); ++port)
{
std::vector<vtkSmartPointer<vtkDataObject>> inputDataObjects;
auto stateOfInputDataObjects = statesOfInputDataObjects[port].get<json::array_t>();
const bool hasMultipleConnections = stateOfInputDataObjects.size() > 1;
for (std::size_t index = 0; index < stateOfInputDataObjects.size(); ++index)
{
const auto identifier = stateOfInputDataObjects[index]["Id"].get<vtkTypeUInt32>();
auto subObject = context->GetObjectAtId(identifier);
deserializer->DeserializeJSON(identifier, subObject);
if (auto* dataObject = vtkDataObject::SafeDownCast(subObject))
{
if (hasMultipleConnections)
{
inputDataObjects.emplace_back(dataObject);
}
else
{
algorithm->SetInputDataObject(port, dataObject);
}
}
}
if (hasMultipleConnections)
{
algorithm->RemoveAllInputConnections(port);
for (auto& dataObject : inputDataObjects)
{
algorithm->AddInputDataObject(port, dataObject);
}
}
}
}
}
}
int RegisterHandlers_vtkAlgorithmSerDesHelper(void* ser, void* deser, void* vtkNotUsed(invoker))
{
int success = 0;
if (auto* asObjectBase = static_cast<vtkObjectBase*>(ser))
{
if (auto* serializer = vtkSerializer::SafeDownCast(asObjectBase))
{
serializer->RegisterHandler(typeid(vtkAlgorithm), Serialize_vtkAlgorithm);
success = 1;
}
}
if (auto* asObjectBase = static_cast<vtkObjectBase*>(deser))
{
if (auto* deserializer = vtkDeserializer::SafeDownCast(asObjectBase))
{
deserializer->RegisterHandler(typeid(vtkAlgorithm), Deserialize_vtkAlgorithm);
deserializer->RegisterConstructor("vtkAlgorithm", vtkAlgorithm::New);
success = 1;
}
}
return success;
}
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