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Common: add json utility functions for Vec3 serialization

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iwubcode 2024-02-16 22:13:20 -06:00
parent 7d6a5d3665
commit edbf8f1772
2 changed files with 39 additions and 1 deletions
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20
Source/Core/Common/JsonUtil.cpp Normal file
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@ -0,0 +1,20 @@
// Copyright 2024 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "Common/JsonUtil.h"
picojson::object ToJsonObject(const Common::Vec3& vec)
{
picojson::object obj;
obj.emplace("x", vec.x);
obj.emplace("y", vec.y);
obj.emplace("z", vec.z);
return obj;
}
void FromJson(const picojson::object& obj, Common::Vec3& vec)
{
vec.x = ReadNumericOrDefault<float>(obj, "x");
vec.y = ReadNumericOrDefault<float>(obj, "y");
vec.z = ReadNumericOrDefault<float>(obj, "z");
}

20
Source/Core/Common/JsonUtil.h
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@ -3,10 +3,13 @@
#pragma once
#include <span>
#include <string>
#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.
@ -24,3 +27,18 @@ picojson::array ToJsonArray(const Range& data)
return result;
}
template <typename Type>
Type ReadNumericOrDefault(const picojson::object& obj, const std::string& key,
Type default_value = Type{})
{
const auto it = obj.find(key);
if (it == obj.end())
return default_value;
if (!it->second.is<double>())
return default_value;
return MathUtil::SaturatingCast<Type>(it->second.get<double>());
}
picojson::object ToJsonObject(const Common::Vec3& vec);
void FromJson(const picojson::object& obj, Common::Vec3& vec);