gremlin-js/gremlin-javascript/lib/structure/io/binary/internals/utils.js

/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 */

/**
 * @author Igor Ostapenko
 */

import { Buffer } from 'buffer';

/*
 * Deserialization error general constructor.
 */
export const des_error = ({ serializer, args, cursor, err }) => {
  if (cursor === undefined) {
    cursor = args[0]; // buffer
  }
  let cursor_tail = '';
  if (cursor instanceof Buffer) {
    if (cursor.length > 32) {
      cursor_tail = '...';
    }
    cursor = cursor.slice(0, 32).toString('hex');
  }

  const fullyQualifiedFormat = args[1];
  const nullable = args[2];

  let m = `${serializer.constructor.name}.deserialize(cursor=${cursor}${cursor_tail}`;
  if (fullyQualifiedFormat !== undefined) {
    m += `, fullyQualifiedFormat=${fullyQualifiedFormat}`;
  }
  if (nullable !== undefined) {
    m += `, nullable=${nullable}`;
  }
  m += `): ${err.message.replace(/\.$/, '')}.`;

  err.message = m;

  return err;
};