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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkDeserializer.h"
#include "vtkInformation.h"
#include "vtkMultiBlockDataSet.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 vtkMultiBlockDataSet
* @param ser a vtkSerializer instance
* @param deser a vtkDeserializer instance
*/
int RegisterHandlers_vtkMultiBlockDataSetSerDesHelper(void* ser, void* deser, void* invoker);
}
static nlohmann::json Serialize_vtkMultiBlockDataSet(
vtkObjectBase* objectBase, vtkSerializer* serializer)
{
using json = nlohmann::json;
json state;
auto object = vtkMultiBlockDataSet::SafeDownCast(objectBase);
if (auto f = serializer->GetHandler(typeid(vtkMultiBlockDataSet::Superclass)))
{
state = f(object, serializer);
}
state["SuperClassNames"].push_back("vtkDataObjectTree");
auto& dst = state["Blocks"] = json::array();
for (unsigned int i = 0; i < object->GetNumberOfBlocks(); ++i)
{
const char* name = nullptr;
if (object->HasMetaData(i))
{
auto* metadata = object->GetMetaData(i);
if (metadata->Has(vtkCompositeDataSet::NAME()))
{
name = metadata->Get(vtkCompositeDataSet::NAME());
}
}
dst.emplace_back(json{ { "Name", name ? name : "" },
{ "DataObject", serializer->SerializeJSON(object->GetBlock(i)) } });
}
return state;
}
static void Deserialize_vtkMultiBlockDataSet(
const nlohmann::json& state, vtkObjectBase* objectBase, vtkDeserializer* deserializer)
{
using json = nlohmann::json;
auto object = vtkMultiBlockDataSet::SafeDownCast(objectBase);
if (auto f = deserializer->GetHandler(typeid(vtkMultiBlockDataSet::Superclass)))
{
f(state, object, deserializer);
}
{
const auto iter = state.find("Blocks");
if (iter != state.end() && iter->is_array())
{
const auto& blocks = iter->get<json::array_t>();
if (blocks.size() < object->GetNumberOfBlocks())
{
// shrink if the required number of blocks is smaller than current allocation.
object->SetNumberOfBlocks(static_cast<unsigned int>(blocks.size()));
}
unsigned int i = 0;
for (const auto& blockState : blocks)
{
const std::string name = blockState.at("Name").get<std::string>();
const auto& block = blockState.at("DataObject");
if (!block.empty())
{
auto* context = deserializer->GetContext();
const auto identifier = block.at("Id").get<vtkTypeUInt32>();
auto subObject = context->GetObjectAtId(identifier);
deserializer->DeserializeJSON(identifier, subObject);
object->SetBlock(i, vtkDataObject::SafeDownCast(subObject));
}
else
{
object->SetBlock(i, nullptr);
}
object->GetMetaData(i)->Set(vtkCompositeDataSet::NAME(), name);
i++;
}
}
}
}
int RegisterHandlers_vtkMultiBlockDataSetSerDesHelper(
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(vtkMultiBlockDataSet), Serialize_vtkMultiBlockDataSet);
success = 1;
}
}
if (auto* asObjectBase = static_cast<vtkObjectBase*>(deser))
{
if (auto* deserializer = vtkDeserializer::SafeDownCast(asObjectBase))
{
deserializer->RegisterHandler(typeid(vtkMultiBlockDataSet), Deserialize_vtkMultiBlockDataSet);
deserializer->RegisterConstructor(
"vtkMultiBlockDataSet", []() { return vtkMultiBlockDataSet::New(); });
success = 1;
}
}
return success;
}
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