/*
* 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 DoubleSerializer implements ObjectSerializer {
public final static DoubleSerializer instance = new DoubleSerializer();
public void write(JSONSerializer serializer, Object object, Object fieldName, Type fieldType) throws IOException {
SerializeWriter out = serializer.getWriter();
if (object == null) {
if (serializer.isEnabled(SerializerFeature.WriteNullNumberAsZero)) {
out.write('0');
} else {
out.writeNull();
}
return;
}
double doubleValue = ((Double) object).doubleValue();
if (Double.isNaN(doubleValue)) {
out.writeNull();
} else if (Double.isInfinite(doubleValue)) {
out.writeNull();
} else {
String doubleText = Double.toString(doubleValue);
if (doubleText.endsWith(".0")) {
doubleText = doubleText.substring(0, doubleText.length() - 2);
}
out.append(doubleText);
if (serializer.isEnabled(SerializerFeature.WriteClassName)) {
out.write('D');
}
}
}
}