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<?php
/**
* This file is part of the ramsey/collection library
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
* @license http://opensource.org/licenses/MIT MIT
*/
declare(strict_types=1);
namespace Ramsey\Collection\Tool;
use Ramsey\Collection\Exception\InvalidPropertyOrMethod;
use Ramsey\Collection\Exception\UnsupportedOperationException;
use function is_array;
use function is_object;
use function method_exists;
use function property_exists;
use function sprintf;
/**
* Provides functionality to extract the value of a property or method from an object.
*/
trait ValueExtractorTrait
{
/**
* Extracts the value of the given property, method, or array key from the
* element.
*
* If `$propertyOrMethod` is `null`, we return the element as-is.
*
* @param mixed $element The element to extract the value from.
* @param string | null $propertyOrMethod The property or method for which the
* value should be extracted.
*
* @return mixed the value extracted from the specified property, method,
* or array key, or the element itself.
*
* @throws InvalidPropertyOrMethod
* @throws UnsupportedOperationException
*/
protected function extractValue(mixed $element, ?string $propertyOrMethod): mixed
{
if ($propertyOrMethod === null) {
return $element;
}
if (!is_object($element) && !is_array($element)) {
throw new UnsupportedOperationException(sprintf(
'The collection type "%s" does not support the $propertyOrMethod parameter',
$this->getType(),
));
}
if (is_array($element)) {
return $element[$propertyOrMethod] ?? throw new InvalidPropertyOrMethod(sprintf(
'Key or index "%s" not found in collection elements',
$propertyOrMethod,
));
}
if (property_exists($element, $propertyOrMethod)) {
return $element->$propertyOrMethod;
}
if (method_exists($element, $propertyOrMethod)) {
return $element->{$propertyOrMethod}();
}
throw new InvalidPropertyOrMethod(sprintf(
'Method or property "%s" not defined in %s',
$propertyOrMethod,
$element::class,
));
}
}
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