private static ArithmeticOperator mapArithmeticOperator(
        ArithmeticBinaryExpression.Operator operator) {
      switch (operator) {
        case ADD:
          return ArithmeticOperator.ADD;
        case SUBTRACT:
          return ArithmeticOperator.SUBTRACT;
        case MULTIPLY:
          return ArithmeticOperator.MULTIPLY;
        case DIVIDE:
          return ArithmeticOperator.DIVIDE;
        case MODULUS:
          return ArithmeticOperator.MODULUS;
        default:
          throw new IllegalArgumentException("Unsupported arithmetic operator: " + operator);
      }
    }
A helper method for recursively parsing an Expression.

@param expression The expression currently being parsed
@param counter Used to sequentially assign parameter indices
@param symbolToIndex Records the index corresponding to each symbol, ensuring that the same
    index is used when the same symbol reappears
@return The constructed Computation expression tree
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/process/rowpattern/expression/Computation.java