/*

  * Licensed to the Apache Software Foundation (ASF) under one

  * or more contributor license agreements. See the NOTICE file

  * distributed with this work for additional information

  * regarding copyright ownership. The ASF licenses this file

  * to you 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 org.apache.johnzon.core;

 import java.io.Serializable;

 import javax.json.JsonArray;

 import javax.json.JsonObject;

 import javax.json.JsonStructure;

 import javax.json.JsonWriter;

 import javax.json.stream.JsonGenerator;

 class JsonWriterImpl implements JsonWriter, Serializable{

     private final JsonGenerator generator;

     private boolean closed = false;

     JsonWriterImpl(final JsonGenerator generator) {

         this.generator = generator;

     }

     @Override

     public void writeArray(final JsonArray array) {

         checkClosed();

         generator.write(array);

         close();

     }

     @Override

     public void writeObject(final JsonObject object) {

         checkClosed();

         generator.write(object);

         close();

     }

     @Override

     public void write(final JsonStructure value) {

         checkClosed();

         generator.write(value);

         close();

     }

     @Override

     public void close() {

         if(!closed) {

             closed = true;

             generator.close();

         }

     }

     private void checkClosed() {

         if(closed) {

             throw new IllegalStateException("writeArray(), writeObject(), write() or close() method was already called");

         }

     }

 }