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owenclave / app/src/main/java/io/nekohasekai/sagernet/fmt/gson/JsonOrAdapterFactory.java
/******************************************************************************
* *
* Copyright (C) 2021 by nekohasekai *
* *
* This program is free software: you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation, either version 3 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program. If not, see . *
* *
******************************************************************************/
package io.nekohasekai.sagernet.fmt.gson;
import com.google.gson.Gson;
import com.google.gson.TypeAdapter;
import com.google.gson.TypeAdapterFactory;
import com.google.gson.reflect.TypeToken;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
@SuppressWarnings({"ConstantConditions", "unchecked", "rawtypes"})
public class JsonOrAdapterFactory implements TypeAdapterFactory {
@Override
public TypeAdapter create(Gson gson, TypeToken type) {
if (!JsonOr.class.isAssignableFrom(type.getRawType())) return null;
Type superclass = type.getRawType().getGenericSuperclass();
if (superclass instanceof Class) {
throw new RuntimeException("Missing type parameter.");
}
ParameterizedType parameterized = (ParameterizedType) superclass;
Type[] args = parameterized.getActualTypeArguments();
try {
JsonOr instance = (JsonOr) type.getRawType().newInstance();
return new JsonOrAdapter(gson, TypeToken.get(args[0]), TypeToken.get(args[1]), type, instance.tokenX, instance.tokenY);
} catch (Exception e) {
e.printStackTrace();
throw new RuntimeException(e);
}
}
}