Viewing file:  HandlerPreconditions.php (1.71 KB) -rwxr-xr-x
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<?php
/**
* 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.
*/
/**
* Preconditions for handlers.
*/
class HandlerPreconditions {
private function __construct() {}
public static function requireNotEmpty($item, $message) {
if (empty($item)) {
throw new InvalidArgumentException($message);
}
}
public static function requireEmpty($item, $message) {
if (! empty($item)) {
throw new InvalidArgumentException($message);
}
}
public static function requireSingular($item, $message) {
self::requireNotEmpty($item, $message);
if (count($item) != 1) {
throw new InvalidArgumentException($message);
}
}
public static function requirePlural($item, $message) {
self::requireNotEmpty($item, $message);
if (count($item) <= 1) {
throw new InvalidArgumentException($message);
}
}
public static function requireCondition($cond, $message) {
if (! $cond) {
throw new InvalidArgumentException($message);
}
}
}
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