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.Field;
  
  final class FieldReaderCharValueField<T>
          extends FieldReaderObjectField<T> {
      FieldReaderCharValueField(
              String fieldName,
              int ordinal,
              long features,
              String format,
              Character defaultValue,
              JSONSchema schema,
              Field field
      ) {
          super(fieldName, char.class, char.class, ordinal, features, format, null, defaultValue, schema, field);
      }
  
      @Override
      public void readFieldValue(JSONReader jsonReader, T object) {
          char ch = jsonReader.readCharValue();
          if (ch == '\0' && jsonReader.wasNull()) {
              return;
          }
  
          accept(object, ch);
      }
  
      @Override
      public Object readFieldValue(JSONReader jsonReader) {
          String str = jsonReader.readString();
          return str == null || str.isEmpty() ? '\0' : str.charAt(0);
      }
  
      @Override
      public void accept(T object, Object value) {
          char charValue;
          if (value instanceof String) {
              charValue = ((String) value).charAt(0);
          } else if (value instanceof Character) {
              charValue = (Character) value;
          } else {
              throw new JSONException("cast to char error");
          }
          accept(object, charValue);
      }
  }
  