dolphin/Source/Core/Common/JsonUtil.h

59 lines
1.6 KiB
C++

// Copyright 2024 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <optional>
#include <string>
#include <type_traits>
#include <picojson.h>
#include "Common/MathUtil.h"
#include "Common/Matrix.h"
// Ideally this would use a concept like, 'template <std::ranges::range Range>' to constrain it,
// but unfortunately we'd need to require clang 15 for that, since the ranges library isn't
// fully implemented until then, but this should suffice.
template <typename Range>
picojson::array ToJsonArray(const Range& data)
{
using RangeUnderlyingType = typename Range::value_type;
picojson::array result;
result.reserve(std::size(data));
for (const auto& value : data)
{
if constexpr (std::is_integral_v<RangeUnderlyingType> ||
std::is_floating_point_v<RangeUnderlyingType>)
{
result.emplace_back(static_cast<double>(value));
}
else
{
result.emplace_back(value);
}
}
return result;
}
template <typename Type>
std::optional<Type> ReadNumericFromJson(const picojson::object& obj, const std::string& key)
{
const auto it = obj.find(key);
if (it == obj.end())
return std::nullopt;
if (!it->second.is<double>())
return std::nullopt;
return MathUtil::SaturatingCast<Type>(it->second.get<double>());
}
std::optional<std::string> ReadStringFromJson(const picojson::object& obj, const std::string& key);
std::optional<bool> ReadBoolFromJson(const picojson::object& obj, const std::string& key);
picojson::object ToJsonObject(const Common::Vec3& vec);
void FromJson(const picojson::object& obj, Common::Vec3& vec);