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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 com.alibaba.fastjson.util.TypeUtils;

import java.io.IOException;
import java.lang.reflect.Type;

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

    public final static CharacterCodec instance = new CharacterCodec();

    public void write(JSONSerializer serializer, Object object, Object fieldName, Type fieldType, int features) throws IOException {
        SerializeWriter out = serializer.out;

        Character value = (Character) object;
        if (value == null) {
            out.writeString("");
            return;
        }

        char c = value.charValue();
        if (c == 0) {
            out.writeString("\u0000");
        } else {
            out.writeString(value.toString());
        }
    }

    @SuppressWarnings("unchecked")
    public  T deserialze(DefaultJSONParser parser, Type clazz, Object fieldName) {
        Object value = parser.parse();
        return value == null //
                ? null //
                : (T) TypeUtils.castToChar(value);
    }

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