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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\HttpKernel\ControllerMetadata;
/**
* Responsible for storing metadata of an argument.
*
* @author Iltar van der Berg <kjarli@gmail.com>
*/
class ArgumentMetadata
{
public const IS_INSTANCEOF = 2;
private string $name;
private ?string $type;
private bool $isVariadic;
private bool $hasDefaultValue;
private mixed $defaultValue;
private bool $isNullable;
private array $attributes;
/**
* @param object[] $attributes
*/
public function __construct(string $name, ?string $type, bool $isVariadic, bool $hasDefaultValue, mixed $defaultValue, bool $isNullable = false, array $attributes = [])
{
$this->name = $name;
$this->type = $type;
$this->isVariadic = $isVariadic;
$this->hasDefaultValue = $hasDefaultValue;
$this->defaultValue = $defaultValue;
$this->isNullable = $isNullable || null === $type || ($hasDefaultValue && null === $defaultValue);
$this->attributes = $attributes;
}
/**
* Returns the name as given in PHP, $foo would yield "foo".
*/
public function getName(): string
{
return $this->name;
}
/**
* Returns the type of the argument.
*
* The type is the PHP class in 5.5+ and additionally the basic type in PHP 7.0+.
*/
public function getType(): ?string
{
return $this->type;
}
/**
* Returns whether the argument is defined as "...$variadic".
*/
public function isVariadic(): bool
{
return $this->isVariadic;
}
/**
* Returns whether the argument has a default value.
*
* Implies whether an argument is optional.
*/
public function hasDefaultValue(): bool
{
return $this->hasDefaultValue;
}
/**
* Returns whether the argument accepts null values.
*/
public function isNullable(): bool
{
return $this->isNullable;
}
/**
* Returns the default value of the argument.
*
* @throws \LogicException if no default value is present; {@see self::hasDefaultValue()}
*/
public function getDefaultValue(): mixed
{
if (!$this->hasDefaultValue) {
throw new \LogicException(sprintf('Argument $%s does not have a default value. Use "%s::hasDefaultValue()" to avoid this exception.', $this->name, __CLASS__));
}
return $this->defaultValue;
}
/**
* @param class-string $name
* @param self::IS_INSTANCEOF|0 $flags
*
* @return array<object>
*/
public function getAttributes(string $name = null, int $flags = 0): array
{
if (!$name) {
return $this->attributes;
}
return $this->getAttributesOfType($name, $flags);
}
/**
* @template T of object
*
* @param class-string<T> $name
* @param self::IS_INSTANCEOF|0 $flags
*
* @return array<T>
*/
public function getAttributesOfType(string $name, int $flags = 0): array
{
$attributes = [];
if ($flags & self::IS_INSTANCEOF) {
foreach ($this->attributes as $attribute) {
if ($attribute instanceof $name) {
$attributes[] = $attribute;
}
}
} else {
foreach ($this->attributes as $attribute) {
if ($attribute::class === $name) {
$attributes[] = $attribute;
}
}
}
return $attributes;
}
}
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