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Current File : /www/wwwroot/0531yanglao.com/vendor/khanamiryan/qrcode-detector-decoder/lib/ChecksumException.php
<?php
/*
 * Copyright 2007 ZXing authors
 *
 * Licensed 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.
 */

namespace Zxing;

/**
 * Thrown when a barcode was successfully detected and decoded, but
 * was not returned because its checksum feature failed.
 *
 * @author Sean Owen
 */
final class ChecksumException extends ReaderException
{
	private static ?\Zxing\ChecksumException $instance = null;

	public static function getChecksumInstance($cause = null)
	{
		if (self::$isStackTrace) {
			return new ChecksumException($cause);
		} else {
			if (!self::$instance) {
				self::$instance = new ChecksumException($cause);
			}

			return self::$instance;
		}
	}
}