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 java.lang.reflect.Type;
  
  class FieldWriterDoubleMethod<T>
          extends FieldWriter<T> {
      protected FieldWriterDoubleMethod(
              String name,
              int ordinal,
              long features,
              String format,
              String label,
              Type fieldType,
              Class fieldClass,
              Field field,
              Method method
      ) {
          super(name, ordinal, features, format, null, label, fieldType, fieldClass, field, method);
      }
  
      @Override
      public Object getFieldValue(Object object) {
          try {
              return method.invoke(object);
          } catch (IllegalArgumentException | IllegalAccessException | InvocationTargetException e) {
              throw new JSONException("invoke getter method error, " + fieldName, e);
          }
      }
  
      @Override
      public boolean write(JSONWriter jsonWriter, T object) {
          Double value;
          try {
              value = (Double) getFieldValue(object);
          } catch (RuntimeException error) {
              if (jsonWriter.isIgnoreErrorGetter()) {
                  return false;
              }
              throw error;
          }
  
          if (value == null) {
              return writeFloatNull(jsonWriter);
          }
  
          writeFieldName(jsonWriter);
          double doubleValue = value;
          if (decimalFormat != null) {
              jsonWriter.writeDouble(doubleValue, decimalFormat);
          } else {
              if ((features & JSONWriter.Feature.WriteNonStringValueAsString.mask) != 0) {
                  jsonWriter.writeString(doubleValue);
              } else {
                  jsonWriter.writeDouble(doubleValue);
              }
          }
          return true;
      }
  
      @Override
      public void writeValue(JSONWriter jsonWriter, T object) {
          Double value = (Double) getFieldValue(object);
  
          if (value == null) {
              jsonWriter.writeNumberNull();
          } else {
              double doubleValue = value;
              if (decimalFormat != null) {
                  jsonWriter.writeDouble(doubleValue, decimalFormat);
              } else {
                  jsonWriter.writeDouble(doubleValue);
              }
          }
      }
  }
  