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<?php declare(strict_types=1);
/*
* This file is part of sebastian/type.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\Type;
use function assert;
use function class_exists;
use function is_iterable;
use ReflectionClass;
use ReflectionException;
final class IterableType extends Type
{
/**
* @var bool
*/
private $allowsNull;
public function __construct(bool $nullable)
{
$this->allowsNull = $nullable;
}
/**
* @throws RuntimeException
*/
public function isAssignable(Type $other): bool
{
if ($this->allowsNull && $other instanceof NullType) {
return true;
}
if ($other instanceof self) {
return true;
}
if ($other instanceof SimpleType) {
return is_iterable($other->value());
}
if ($other instanceof ObjectType) {
$className = $other->className()->qualifiedName();
assert(class_exists($className));
try {
return (new ReflectionClass($className))->isIterable();
// @codeCoverageIgnoreStart
} catch (ReflectionException $e) {
throw new RuntimeException(
$e->getMessage(),
(int) $e->getCode(),
$e
);
// @codeCoverageIgnoreEnd
}
}
return false;
}
public function name(): string
{
return 'iterable';
}
public function allowsNull(): bool
{
return $this->allowsNull;
}
/**
* @psalm-assert-if-true IterableType $this
*/
public function isIterable(): bool
{
return true;
}
}
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