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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DIR:/opt/cpanel/ea-wappspector/vendor/php-di/php-di/src/Definition/Source/
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Current File : //opt/cpanel/ea-wappspector/vendor/php-di/php-di/src/Definition/Source/SourceChain.php
<?php

declare(strict_types=1);

namespace DI\Definition\Source;

use DI\Definition\Definition;
use DI\Definition\ExtendsPreviousDefinition;

/**
 * Manages a chain of other definition sources.
 *
 * @author Matthieu Napoli <matthieu@mnapoli.fr>
 */
class SourceChain implements DefinitionSource, MutableDefinitionSource
{
    private ?MutableDefinitionSource $mutableSource;

    /**
     * @param list<DefinitionSource> $sources
     */
    public function __construct(
        private array $sources,
    ) {
    }

    /**
     * @param int $startIndex Use this parameter to start looking from a specific
     *                        point in the source chain.
     */
    public function getDefinition(string $name, int $startIndex = 0) : ?Definition
    {
        $count = count($this->sources);
        for ($i = $startIndex; $i < $count; ++$i) {
            $source = $this->sources[$i];

            $definition = $source->getDefinition($name);

            if ($definition) {
                if ($definition instanceof ExtendsPreviousDefinition) {
                    $this->resolveExtendedDefinition($definition, $i);
                }

                return $definition;
            }
        }

        return null;
    }

    public function getDefinitions() : array
    {
        $allDefinitions = array_merge(...array_map(fn ($source) => $source->getDefinitions(), $this->sources));

        /** @var string[] $allNames */
        $allNames = array_keys($allDefinitions);

        $allValues = array_filter(array_map(fn ($name) => $this->getDefinition($name), $allNames));

        return array_combine($allNames, $allValues);
    }

    public function addDefinition(Definition $definition) : void
    {
        if (! $this->mutableSource) {
            throw new \LogicException("The container's definition source has not been initialized correctly");
        }

        $this->mutableSource->addDefinition($definition);
    }

    private function resolveExtendedDefinition(ExtendsPreviousDefinition $definition, int $currentIndex)
    {
        // Look in the next sources only (else infinite recursion, and we can only extend
        // entries defined in the previous definition files - a previous == next here because
        // the array was reversed ;) )
        $subDefinition = $this->getDefinition($definition->getName(), $currentIndex + 1);

        if ($subDefinition) {
            $definition->setExtendedDefinition($subDefinition);
        }
    }

    public function setMutableDefinitionSource(MutableDefinitionSource $mutableSource) : void
    {
        $this->mutableSource = $mutableSource;

        array_unshift($this->sources, $mutableSource);
    }
}