content: /*
   * 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 ArraySerializer implements ObjectSerializer {
  
  	private final Class<?> componentType;
      private final ObjectSerializer compObjectSerializer;
  
      public ArraySerializer(Class<?> componentType, ObjectSerializer compObjectSerializer){
          this.componentType = componentType;
          this.compObjectSerializer = compObjectSerializer;
      }
  
      public final void write(JSONSerializer serializer, Object object, Object fieldName, Type fieldType)
                                                                                                         throws IOException {
          SerializeWriter out = serializer.getWriter();
  
          if (object == null) {
              if (out.isEnabled(SerializerFeature.WriteNullListAsEmpty)) {
                  out.write("[]");
              } else {
                  out.writeNull();
              }
              return;
          }
  
          Object[] array = (Object[]) object;
          int size = array.length;
  
          SerialContext context = serializer.getContext();
          serializer.setContext(context, object, fieldName);
  
          try {
              out.append('[');
              for (int i = 0; i < size; ++i) {
              	if (i != 0) {
              		out.append(',');
              	}
                  Object item = array[i];
  
                  if (item == null) {
                      out.append("null");
                  } else if (item.getClass() == componentType) {
                  	compObjectSerializer.write(serializer, item, i, null);
                  } else {
                  	ObjectSerializer itemSerializer = serializer.getObjectWriter(item.getClass());
                  	itemSerializer.write(serializer, item, i, null);
                  }
              }
              out.append(']');
          } finally {
              serializer.setContext(context);
          }
      }
  }
  