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<?php
/**
 * This file is part of PHP Mess Detector.
 *
 * Copyright (c) Manuel Pichler <[email protected]>.
 * All rights reserved.
 *
 * Licensed under BSD License
 * For full copyright and license information, please see the LICENSE file.
 * Redistributions of files must retain the above copyright notice.
 *
 * @author Manuel Pichler <[email protected]>
 * @copyright Manuel Pichler. All rights reserved.
 * @license https://opensource.org/licenses/bsd-license.php BSD License
 * @link http://phpmd.org/
 */

namespace PHPMD\Rule\Naming;

use PHPMD\AbstractNode;
use PHPMD\AbstractRule;
use PHPMD\Rule\ClassAware;
use PHPMD\Rule\EnumAware;
use PHPMD\Rule\InterfaceAware;
use PHPMD\Rule\TraitAware;

/**
 * This rule detects class/interface constants that do not follow the upper
 * case convention.
 */
class ConstantNamingConventions extends AbstractRule implements ClassAware, InterfaceAware, TraitAware, EnumAware
{
    /**
     * Extracts all constant declarations from the given node and tests that
     * the image only contains upper case characters.
     *
     * @param \PHPMD\AbstractNode $node
     * @return void
     */
    public function apply(AbstractNode $node)
    {
        foreach ($node->findChildrenOfType('ConstantDeclarator') as $declarator) {
            if ($declarator->getImage() !== strtoupper($declarator->getImage())) {
                $this->addViolation($declarator, array($declarator->getImage()));
            }
        }
    }
}