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<?php
declare(strict_types=1);
/*
* This file is part of PHP CS Fixer.
*
* (c) Fabien Potencier <fabien@symfony.com>
* Dariusz Rumiński <dariusz.ruminski@gmail.com>
*
* This source file is subject to the MIT license that is bundled
* with this source code in the file LICENSE.
*/
namespace PhpCsFixer\DocBlock;
use PhpCsFixer\Preg;
/**
* This represents a tag, as defined by the proposed PSR PHPDoc standard.
*
* @author Graham Campbell <hello@gjcampbell.co.uk>
*/
final class Tag
{
/**
* All the tags defined by the proposed PSR PHPDoc standard.
*
* @var string[]
*/
private static $tags = [
'api', 'author', 'category', 'copyright', 'deprecated', 'example',
'global', 'internal', 'license', 'link', 'method', 'package', 'param',
'property', 'property-read', 'property-write', 'return', 'see',
'since', 'subpackage', 'throws', 'todo', 'uses', 'var', 'version',
];
/**
* The line containing the tag.
*
* @var Line
*/
private $line;
/**
* The cached tag name.
*
* @var null|string
*/
private $name;
/**
* Create a new tag instance.
*/
public function __construct(Line $line)
{
$this->line = $line;
}
/**
* Get the tag name.
*
* This may be "param", or "return", etc.
*/
public function getName(): string
{
if (null === $this->name) {
Preg::matchAll('/@[a-zA-Z0-9_-]+(?=\s|$)/', $this->line->getContent(), $matches);
if (isset($matches[0][0])) {
$this->name = ltrim($matches[0][0], '@');
} else {
$this->name = 'other';
}
}
return $this->name;
}
/**
* Set the tag name.
*
* This will also be persisted to the upstream line and annotation.
*/
public function setName(string $name): void
{
$current = $this->getName();
if ('other' === $current) {
throw new \RuntimeException('Cannot set name on unknown tag.');
}
$this->line->setContent(Preg::replace("/@{$current}/", "@{$name}", $this->line->getContent(), 1));
$this->name = $name;
}
/**
* Is the tag a known tag?
*
* This is defined by if it exists in the proposed PSR PHPDoc standard.
*/
public function valid(): bool
{
return \in_array($this->getName(), self::$tags, true);
}
}
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