<?php
/**
* JSONPath implementation for PHP.
*
* @license https://github.com/SoftCreatR/JSONPath/blob/main/LICENSE MIT License
*/
declare(strict_types=1);
namespace Flow\JSONPath\Filters;
use Flow\JSONPath\{AccessHelper, JSONPathException};
class IndexFilter extends AbstractFilter
{
/**
* @inheritDoc
*
* @throws JSONPathException
*/
public function filter($collection): array
{
if (is_array($this->token->value)) {
$result = [];
foreach ($this->token->value as $value) {
if (AccessHelper::keyExists($collection, $value, $this->magicIsAllowed)) {
$result[] = AccessHelper::getValue($collection, $value, $this->magicIsAllowed);
}
}
return $result;
}
if (AccessHelper::keyExists($collection, $this->token->value, $this->magicIsAllowed)) {
return [
AccessHelper::getValue($collection, $this->token->value, $this->magicIsAllowed),
];
}
if ($this->token->value === '*') {
return AccessHelper::arrayValues($collection);
}
if ($this->token->value === 'length') {
return [
count($collection),
];
}
return [];
}
}
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