43 lines
1.2 KiB
PHP
43 lines
1.2 KiB
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 $instance;
|
|
|
|
public static function getChecksumInstance($cause = null)
|
|
{
|
|
if (self::$isStackTrace) {
|
|
return new ChecksumException($cause);
|
|
} else {
|
|
if (!self::$instance) {
|
|
self::$instance = new ChecksumException($cause);
|
|
}
|
|
|
|
return self::$instance;
|
|
}
|
|
}
|
|
}
|