晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 sh-3ll

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Current File : //opt/cpanel/ea-wappspector/vendor/phpunit/phpunit/src/Framework/Constraint/Cardinality/Count.php
<?php declare(strict_types=1);
/*
 * This file is part of PHPUnit.
 *
 * (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 PHPUnit\Framework\Constraint;

use function count;
use function is_countable;
use function iterator_count;
use function sprintf;
use EmptyIterator;
use Generator;
use Iterator;
use IteratorAggregate;
use PHPUnit\Framework\Exception;
use PHPUnit\Framework\GeneratorNotSupportedException;
use Traversable;

/**
 * @no-named-arguments Parameter names are not covered by the backward compatibility promise for PHPUnit
 */
class Count extends Constraint
{
    private readonly int $expectedCount;

    public function __construct(int $expected)
    {
        $this->expectedCount = $expected;
    }

    public function toString(): string
    {
        return sprintf(
            'count matches %d',
            $this->expectedCount,
        );
    }

    /**
     * Evaluates the constraint for parameter $other. Returns true if the
     * constraint is met, false otherwise.
     *
     * @throws Exception
     */
    protected function matches(mixed $other): bool
    {
        return $this->expectedCount === $this->getCountOf($other);
    }

    /**
     * @throws Exception
     */
    protected function getCountOf(mixed $other): ?int
    {
        if (is_countable($other)) {
            return count($other);
        }

        if ($other instanceof EmptyIterator) {
            return 0;
        }

        if ($other instanceof Traversable) {
            while ($other instanceof IteratorAggregate) {
                try {
                    $other = $other->getIterator();
                } catch (\Exception $e) {
                    throw new Exception(
                        $e->getMessage(),
                        $e->getCode(),
                        $e,
                    );
                }
            }

            $iterator = $other;

            if ($iterator instanceof Generator) {
                throw new GeneratorNotSupportedException;
            }

            if (!$iterator instanceof Iterator) {
                return iterator_count($iterator);
            }

            $key   = $iterator->key();
            $count = iterator_count($iterator);

            // Manually rewind $iterator to previous key, since iterator_count
            // moves pointer.
            if ($key !== null) {
                $iterator->rewind();

                while ($iterator->valid() && $key !== $iterator->key()) {
                    $iterator->next();
                }
            }

            return $count;
        }

        return null;
    }

    /**
     * Returns the description of the failure.
     *
     * The beginning of failure messages is "Failed asserting that" in most
     * cases. This method should return the second part of that sentence.
     *
     * @throws Exception
     */
    protected function failureDescription(mixed $other): string
    {
        return sprintf(
            'actual size %d matches expected size %d',
            (int) $this->getCountOf($other),
            $this->expectedCount,
        );
    }
}