content: package com.alibaba.fastjson2.reader;
  
  import com.alibaba.fastjson2.JSONException;
  import com.alibaba.fastjson2.JSONReader;
  import com.alibaba.fastjson2.schema.JSONSchema;
  
  import java.lang.reflect.Method;
  import java.util.concurrent.atomic.AtomicLong;
  
  final class FieldReaderAtomicLongReadOnly<T>
          extends FieldReader<T> {
      FieldReaderAtomicLongReadOnly(
              String fieldName,
              Class fieldType,
              int ordinal,
              JSONSchema schema,
              Method method
      ) {
          super(fieldName, fieldType, fieldType, ordinal, 0, null, null, null, schema, method, null);
      }
  
      @Override
      public boolean isReadOnly() {
          return true;
      }
  
      @Override
      public void accept(T object, Object value) {
          if (value == null) {
              return;
          }
  
          try {
              AtomicLong atomic = (AtomicLong) method.invoke(object);
              long longValue = ((Number) value).longValue();
              atomic.set(longValue);
          } catch (Exception e) {
              throw new JSONException("set " + fieldName + " error", e);
          }
      }
  
      @Override
      public void readFieldValue(JSONReader jsonReader, T object) {
          Long value = jsonReader.readInt64();
          accept(object, value);
      }
  
      @Override
      public Object readFieldValue(JSONReader jsonReader) {
          long longValue = jsonReader.readInt64Value();
          if (jsonReader.wasNull()) {
              return null;
          }
  
          return new AtomicLong(longValue);
      }
  }
  