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<?php
namespace Zenstruck\Callback\Parameter;
use Zenstruck\Callback\Argument;
use Zenstruck\Callback\Exception\UnresolveableArgument;
use Zenstruck\Callback\Parameter;
/**
* @author Kevin Bond <[email protected]>
*/
final class UnionParameter extends Parameter
{
/** @var Parameter[] */
private $parameters;
public function __construct(Parameter ...$parameters)
if (empty($parameters)) {
throw new \InvalidArgumentException('At least one argument is required.');
}
$this->parameters = $parameters;
public function type(): string
return \implode('|', \array_map(static function(Parameter $param) { return $param->type(); }, $this->parameters));
protected function valueFor(Argument $argument)
foreach ($this->parameters as $parameter) {
try {
return $parameter->valueFor($argument);
} catch (UnresolveableArgument $e) {
continue;
throw new UnresolveableArgument('Unable to resolve.');
zenstruck /
callback
