/*
 * Copyright 1999-2101 Alibaba Group.
 *
 * Licensed under the Apache License, 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.apache.org/licenses/LICENSE-2.0
 *
 * 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 java.io.IOException;
import java.lang.reflect.Type;

/**
 * @author wenshao<szujobs@hotmail.com>
 */
public class LongSerializer implements ObjectSerializer {

    public static LongSerializer instance = new LongSerializer();

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

        if (object == null) {
            if (out.isEnabled(SerializerFeature.WriteNullNumberAsZero)) {
                out.write('0');
            } else {
                out.writeNull();
            }
            return;
        }

        long value = ((Long) object).longValue();
        out.writeLong(value);

        if (serializer.isEnabled(SerializerFeature.WriteClassName)) {
            if (value <= Integer.MAX_VALUE && value >= Integer.MIN_VALUE) {
                if (fieldType != Long.class) {
                    out.write('L');
                }
            }
        }
    }
}