MapExpressionFunctionProvider.php

<?php

/*
 * Copyright (c) 2022 SYSTOPIA GmbH
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
 * OR OTHER DEALINGS IN THE SOFTWARE.
 */

declare(strict_types=1);

namespace Systopia\ExpressionLanguage\FunctionProvider;

use Symfony\Component\ExpressionLanguage\ExpressionFunction;
use Symfony\Component\ExpressionLanguage\ExpressionFunctionProviderInterface;
use Symfony\Component\ExpressionLanguage\ExpressionLanguage;

final class MapExpressionFunctionProvider implements ExpressionFunctionProviderInterface
{
    private ExpressionLanguage $expressionLanguage;

    public function __construct(ExpressionLanguage $expressionLanguage)
    {
        $this->expressionLanguage = $expressionLanguage;
    }

    /**
     * {@inheritDoc}
     */
    public function getFunctions(): array
    {
        return [
            new ExpressionFunction('map', function (string $arrayName, string $expression): string {
                return \sprintf('map(%s, %s)', $arrayName, $expression);
            }, function ($arguments, iterable $iterable, string $expression): array {
                $mapped = [];
                foreach ($iterable as $key => $value) {
                    $mapped[] = $this->expressionLanguage->evaluate($expression, ['key' => $key, 'value' => $value]);
                }

                return $mapped;
            }),
        ];
    }
}