content: package act.util;
  
  /*-
   * #%L
   * ACT Framework
   * %%
   * Copyright (C) 2014 - 2017 ActFramework
   * %%
   * 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.
   * #L%
   */
  
  import com.alibaba.fastjson.parser.DefaultJSONParser;
  import com.alibaba.fastjson.parser.JSONLexer;
  import com.alibaba.fastjson.parser.JSONToken;
  import com.alibaba.fastjson.parser.deserializer.ObjectDeserializer;
  import com.alibaba.fastjson.serializer.JSONSerializer;
  import com.alibaba.fastjson.serializer.ObjectSerializer;
  import com.alibaba.fastjson.serializer.SerializeWriter;
  import org.osgl.util.Keyword;
  import org.osgl.util.KeywordValueObjectCodec;
  
  import java.io.IOException;
  import java.lang.reflect.Type;
  
  public class FastJsonKeywordCodec extends SingletonBase implements ObjectSerializer, ObjectDeserializer {
  
      private KeywordValueObjectCodec keywordCodec;
  
      public FastJsonKeywordCodec() {
          keywordCodec = KeywordValueObjectCodec.INSTANCE;
      }
  
      @SuppressWarnings("unchecked")
      public <T> T deserialze(DefaultJSONParser parser, Type type, Object fieldName) {
          JSONLexer lexer = parser.getLexer();
          if (lexer.token() == JSONToken.LITERAL_STRING) {
              String text = lexer.stringVal();
              lexer.nextToken(JSONToken.COMMA);
              return (T) Keyword.of(text);
          } else {
              throw new UnsupportedOperationException();
          }
      }
  
      public int getFastMatchToken() {
          return JSONToken.LITERAL_STRING;
      }
  
      public void write(JSONSerializer serializer, Object object, Object fieldName, Type fieldType, int features) throws IOException {
          SerializeWriter out = serializer.getWriter();
  
          if (object == null) {
              out.writeNull();
              return;
          }
  
          out.writeString(keywordCodec.toString((Keyword) object));
      }
  
  }
  