content: /*
   * Copyright 1999-2018 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 com.alibaba.fastjson.JSONException;
  
  import java.io.IOException;
  import java.lang.reflect.*;
  
  /**
   * @author wenshao[szujobs@hotmail.com]
   */
  public class EnumSerializer implements ObjectSerializer {
  
      private final Member member;
  
      public EnumSerializer() {
          this.member = null;
      }
  
      public EnumSerializer(Member member) {
          this.member = member;
      }
  
      public final static EnumSerializer instance = new EnumSerializer();
  
      public void write(JSONSerializer serializer, Object object, Object fieldName, Type fieldType, int features) throws IOException {
          if (member == null) {
              SerializeWriter out = serializer.out;
              out.writeEnum((Enum<?>) object);
              return;
          }
  
          Object fieldValue = null;
          try {
              if (member instanceof Field) {
                  fieldValue = ((Field) member).get(object);
              } else {
                  fieldValue = ((Method) member).invoke(object);
              }
          } catch (Exception e) {
              throw new JSONException("getEnumValue error", e);
          }
  
          serializer.write(fieldValue);
      }
  }
  