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<?php
declare(strict_types=1);
/**
* This file is part of phpDocumentor.
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @link http://phpdoc.org
*/
namespace phpDocumentor\Reflection\DocBlock\Tags;
use phpDocumentor\Reflection\DocBlock\Description;
use phpDocumentor\Reflection\DocBlock\DescriptionFactory;
use phpDocumentor\Reflection\Type;
use phpDocumentor\Reflection\TypeResolver;
use phpDocumentor\Reflection\Types\Context as TypeContext;
use phpDocumentor\Reflection\Utils;
use Webmozart\Assert\Assert;
use function array_shift;
use function array_unshift;
use function implode;
use function strpos;
use function substr;
use const PREG_SPLIT_DELIM_CAPTURE;
/**
* Reflection class for the {@}param tag in a Docblock.
*/
final class Param extends TagWithType implements Factory\StaticMethod
{
/** @var string|null */
private $variableName;
/** @var bool determines whether this is a variadic argument */
private $isVariadic;
/** @var bool determines whether this is passed by reference */
private $isReference;
public function __construct(
?string $variableName,
?Type $type = null,
bool $isVariadic = false,
?Description $description = null,
bool $isReference = false
) {
$this->name = 'param';
$this->variableName = $variableName;
$this->type = $type;
$this->isVariadic = $isVariadic;
$this->description = $description;
$this->isReference = $isReference;
}
public static function create(
string $body,
?TypeResolver $typeResolver = null,
?DescriptionFactory $descriptionFactory = null,
?TypeContext $context = null
): self {
Assert::stringNotEmpty($body);
Assert::notNull($typeResolver);
Assert::notNull($descriptionFactory);
[$firstPart, $body] = self::extractTypeFromBody($body);
$type = null;
$parts = Utils::pregSplit('/(\s+)/Su', $body, 2, PREG_SPLIT_DELIM_CAPTURE);
$variableName = '';
$isVariadic = false;
$isReference = false;
// if the first item that is encountered is not a variable; it is a type
if ($firstPart && !self::strStartsWithVariable($firstPart)) {
$type = $typeResolver->resolve($firstPart, $context);
} else {
// first part is not a type; we should prepend it to the parts array for further processing
array_unshift($parts, $firstPart);
}
// if the next item starts with a $ or ...$ or &$ or &...$ it must be the variable name
if (isset($parts[0]) && self::strStartsWithVariable($parts[0])) {
$variableName = array_shift($parts);
if ($type) {
array_shift($parts);
}
Assert::notNull($variableName);
if (strpos($variableName, '$') === 0) {
$variableName = substr($variableName, 1);
} elseif (strpos($variableName, '&$') === 0) {
$isReference = true;
$variableName = substr($variableName, 2);
} elseif (strpos($variableName, '...$') === 0) {
$isVariadic = true;
$variableName = substr($variableName, 4);
} elseif (strpos($variableName, '&...$') === 0) {
$isVariadic = true;
$isReference = true;
$variableName = substr($variableName, 5);
}
}
$description = $descriptionFactory->create(implode('', $parts), $context);
return new static($variableName, $type, $isVariadic, $description, $isReference);
}
/**
* Returns the variable's name.
*/
public function getVariableName(): ?string
{
return $this->variableName;
}
/**
* Returns whether this tag is variadic.
*/
public function isVariadic(): bool
{
return $this->isVariadic;
}
/**
* Returns whether this tag is passed by reference.
*/
public function isReference(): bool
{
return $this->isReference;
}
/**
* Returns a string representation for this tag.
*/
public function __toString(): string
{
if ($this->description) {
$description = $this->description->render();
} else {
$description = '';
}
$variableName = '';
if ($this->variableName) {
$variableName .= ($this->isReference ? '&' : '') . ($this->isVariadic ? '...' : '');
$variableName .= '$' . $this->variableName;
}
$type = (string) $this->type;
return $type
. ($variableName !== '' ? ($type !== '' ? ' ' : '') . $variableName : '')
. ($description !== '' ? ($type !== '' || $variableName !== '' ? ' ' : '') . $description : '');
}
private static function strStartsWithVariable(string $str): bool
{
return strpos($str, '$') === 0
||
strpos($str, '...$') === 0
||
strpos($str, '&$') === 0
||
strpos($str, '&...$') === 0;
}
}
|
