TensorRT-LLMs/cpp/tensorrt_llm/common/jsonSerializeOptional.h
2024-11-12 15:27:49 +08:00

55 lines
1.5 KiB
C++

/*
* SPDX-FileCopyrightText: Copyright (c) 2022-2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <nlohmann/json.hpp>
#include <optional>
namespace nlohmann
{
template <typename T>
struct adl_serializer<std::optional<T>>
{
static void to_json(nlohmann::json& j, std::optional<T> const& opt)
{
if (opt == std::nullopt)
{
j = nullptr;
}
else
{
j = opt.value(); // this will call adl_serializer<T>::to_json which will
// find the free function to_json in T's namespace!
}
}
static void from_json(nlohmann::json const& j, std::optional<T>& opt)
{
if (j.is_null())
{
opt = std::nullopt;
}
else
{
opt = j.template get<T>(); // same as above, but with
// adl_serializer<T>::from_json
}
}
};
} // namespace nlohmann