content: /*
   * Copyright 2023 Ant 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.alipay.antchain.bridge.relayer.commons.utils;
  
  import java.lang.reflect.Type;
  
  import com.alibaba.fastjson.parser.DefaultJSONParser;
  import com.alibaba.fastjson.parser.JSONToken;
  import com.alibaba.fastjson.parser.deserializer.JavaObjectDeserializer;
  import com.alipay.antchain.bridge.commons.bbc.AbstractBBCContext;
  import com.alipay.antchain.bridge.commons.bbc.DefaultBBCContext;
  
  public class HeteroBBCContextDeserializer extends JavaObjectDeserializer {
      @Override
      public <T> T deserialze(DefaultJSONParser parser, Type type, Object fieldName) {
          if (parser.getLexer().token() == JSONToken.LITERAL_STRING) {
              type = String.class;
              String contextJson = super.deserialze(parser, type, fieldName);
              AbstractBBCContext bbcContext = new DefaultBBCContext();
              bbcContext.decodeFromBytes(contextJson.getBytes());
              return (T) bbcContext;
          }
          return super.deserialze(parser, type, fieldName);
      }
  
      @Override
      public int getFastMatchToken() {
          return 0;
      }
  }
  