content: package com.alibaba.fastjson2.writer;
  
  import com.alibaba.fastjson2.JSONException;
  import com.alibaba.fastjson2.JSONWriter;
  
  import java.lang.reflect.Field;
  import java.lang.reflect.InvocationTargetException;
  import java.lang.reflect.Method;
  
  import static com.alibaba.fastjson2.JSONWriter.Feature.WriteNulls;
  
  final class FieldWriterCharMethod<T>
          extends FieldWriter<T> {
      FieldWriterCharMethod(
              String fieldName,
              int ordinal,
              long features,
              String format,
              String label,
              Field field,
              Method method,
              Class fieldClass
      ) {
          super(fieldName, ordinal, features, format, null, label, fieldClass, fieldClass, field, method);
      }
  
      @Override
      public Object getFieldValue(T object) {
          try {
              return method.invoke(object);
          } catch (IllegalArgumentException | IllegalAccessException | InvocationTargetException e) {
              throw new JSONException("invoke getter method error, " + fieldName, e);
          }
      }
  
      @Override
      public void writeValue(JSONWriter jsonWriter, T object) {
          Character value = (Character) getFieldValue(object);
  
          if (value == null) {
              jsonWriter.writeNull();
              return;
          }
  
          jsonWriter.writeChar(value);
      }
  
      @Override
      public boolean write(JSONWriter jsonWriter, T object) {
          Character value = (Character) getFieldValue(object);
  
          if (value == null) {
              if (((jsonWriter.context.getFeatures() | this.features) & WriteNulls.mask) != 0) {
                  writeFieldName(jsonWriter);
                  jsonWriter.writeNull();
                  return true;
              }
              return false;
          }
  
          writeFieldName(jsonWriter);
          jsonWriter.writeChar(value);
          return true;
      }
  }
  