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<?php
/**
* This file is part of PHPWord - A pure PHP library for reading and writing
* word processing documents.
*
* PHPWord is free software distributed under the terms of the GNU Lesser
* General Public License version 3 as published by the Free Software Foundation.
*
* For the full copyright and license information, please read the LICENSE
* file that was distributed with this source code. For the full list of
* contributors, visit https://github.com/PHPOffice/PHPWord/contributors.
*
* @see https://github.com/PHPOffice/PHPWord
* @copyright 2010-2018 PHPWord contributors
* @license http://www.gnu.org/licenses/lgpl.txt LGPL version 3
*/
namespace PhpOffice\PhpWord\Shared;
abstract class AbstractEnum
{
private static $constCacheArray = null;
private static function getConstants()
{
if (self::$constCacheArray == null) {
self::$constCacheArray = array();
}
$calledClass = get_called_class();
if (!array_key_exists($calledClass, self::$constCacheArray)) {
$reflect = new \ReflectionClass($calledClass);
self::$constCacheArray[$calledClass] = $reflect->getConstants();
}
return self::$constCacheArray[$calledClass];
}
/**
* Returns all values for this enum
*
* @return array
*/
public static function values()
{
return array_values(self::getConstants());
}
/**
* Returns true the value is valid for this enum
*
* @param string $value
* @return bool true if value is valid
*/
public static function isValid($value)
{
$values = array_values(self::getConstants());
return in_array($value, $values, true);
}
/**
* Validates that the value passed is a valid value
*
* @param string $value
* @throws \InvalidArgumentException if the value passed is not valid for this enum
*/
public static function validate($value)
{
if (!self::isValid($value)) {
$calledClass = get_called_class();
$values = array_values(self::getConstants());
throw new \InvalidArgumentException("$value is not a valid value for $calledClass, possible values are " . implode(', ', $values));
}
}
}