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Adapter alibaba fastjson to other json libraries. the fastjson version: 1.2.58

There is a newer version: 3.2.26

/*
 * Copyright 2019 the original author or authors.
 *
 * Licensed under the Apache, 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.gnu.org/licenses/lgpl-3.0.html
 *
 * 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.
 */
package com.alibaba.fastjson.serializer;

import com.alibaba.fastjson.parser.DefaultJSONParser;
import com.alibaba.fastjson.parser.JSONToken;
import com.alibaba.fastjson.parser.deserializer.ObjectDeserializer;

import java.io.IOException;
import java.lang.ref.Reference;
import java.lang.ref.SoftReference;
import java.lang.ref.WeakReference;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.concurrent.atomic.AtomicReference;

/**
 * @author wenshao[[email protected]]
 */
public class ReferenceCodec implements ObjectSerializer, ObjectDeserializer {

    public final static ReferenceCodec instance = new ReferenceCodec();

    @SuppressWarnings("rawtypes")
    public void write(JSONSerializer serializer, Object object, Object fieldName, Type fieldType, int features) throws IOException {
        Object item;
        if (object instanceof AtomicReference) {
            AtomicReference val = (AtomicReference) object;
            item = val.get();
        } else {
            item = ((Reference) object).get();
        }
        serializer.write(item);
    }

    @SuppressWarnings({"unchecked", "rawtypes"})
    public  T deserialze(DefaultJSONParser parser, Type type, Object fieldName) {
        ParameterizedType paramType = (ParameterizedType) type;
        Type itemType = paramType.getActualTypeArguments()[0];

        Object itemObject = parser.parseObject(itemType);

        Type rawType = paramType.getRawType();
        if (rawType == AtomicReference.class) {
            return (T) new AtomicReference(itemObject);
        }

        if (rawType == WeakReference.class) {
            return (T) new WeakReference(itemObject);
        }

        if (rawType == SoftReference.class) {
            return (T) new SoftReference(itemObject);
        }

        throw new UnsupportedOperationException(rawType.toString());
    }

    public int getFastMatchToken() {
        return JSONToken.LBRACE;
    }
}