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。 .
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Current File : //opt/cpanel/ea-wappspector/vendor/phpunit/phpunit/src/Framework/Constraint/Equality/IsEqual.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 is_string;
use function sprintf;
use function str_contains;
use function trim;
use PHPUnit\Framework\ExpectationFailedException;
use PHPUnit\Util\Exporter;
use SebastianBergmann\Comparator\ComparisonFailure;
use SebastianBergmann\Comparator\Factory as ComparatorFactory;

/**
 * @no-named-arguments Parameter names are not covered by the backward compatibility promise for PHPUnit
 */
final class IsEqual extends Constraint
{
    private readonly mixed $value;
    private readonly float $delta;
    private readonly bool $canonicalize;
    private readonly bool $ignoreCase;

    public function __construct(mixed $value, float $delta = 0.0, bool $canonicalize = false, bool $ignoreCase = false)
    {
        $this->value        = $value;
        $this->delta        = $delta;
        $this->canonicalize = $canonicalize;
        $this->ignoreCase   = $ignoreCase;
    }

    /**
     * Evaluates the constraint for parameter $other.
     *
     * If $returnResult is set to false (the default), an exception is thrown
     * in case of a failure. null is returned otherwise.
     *
     * If $returnResult is true, the result of the evaluation is returned as
     * a boolean value instead: true in case of success, false in case of a
     * failure.
     *
     * @throws ExpectationFailedException
     */
    public function evaluate(mixed $other, string $description = '', bool $returnResult = false): ?bool
    {
        // If $this->value and $other are identical, they are also equal.
        // This is the most common path and will allow us to skip
        // initialization of all the comparators.
        if ($this->value === $other) {
            return true;
        }

        $comparatorFactory = ComparatorFactory::getInstance();

        try {
            $comparator = $comparatorFactory->getComparatorFor(
                $this->value,
                $other,
            );

            $comparator->assertEquals(
                $this->value,
                $other,
                $this->delta,
                $this->canonicalize,
                $this->ignoreCase,
            );
        } catch (ComparisonFailure $f) {
            if ($returnResult) {
                return false;
            }

            throw new ExpectationFailedException(
                trim($description . "\n" . $f->getMessage()),
                $f,
            );
        }

        return true;
    }

    /**
     * Returns a string representation of the constraint.
     */
    public function toString(bool $exportObjects = false): string
    {
        $delta = '';

        if (is_string($this->value)) {
            if (str_contains($this->value, "\n")) {
                return 'is equal to <text>';
            }

            return sprintf(
                "is equal to '%s'",
                $this->value,
            );
        }

        if ($this->delta != 0) {
            $delta = sprintf(
                ' with delta <%F>',
                $this->delta,
            );
        }

        return sprintf(
            'is equal to %s%s',
            Exporter::export($this->value, $exportObjects),
            $delta,
        );
    }
}

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