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[EDIT] FILE: GenericLanguageInflectorFactory.php

<?php

declare(strict_types=1);

namespace Doctrine\Inflector;

use Doctrine\Inflector\Rules\Ruleset;

use function array_unshift;

abstract class GenericLanguageInflectorFactory implements LanguageInflectorFactory
{
    /** @var Ruleset[] */
    private $singularRulesets = [];

/** @var Ruleset[] */
    private $pluralRulesets = [];

final public function __construct()
    {
        $this->singularRulesets[] = $this->getSingularRuleset();
        $this->pluralRulesets[]   = $this->getPluralRuleset();
    }

final public function build(): Inflector
    {
        return new Inflector(
            new CachedWordInflector(new RulesetInflector(
                ...$this->singularRulesets
            )),
            new CachedWordInflector(new RulesetInflector(
                ...$this->pluralRulesets
            ))
        );
    }

final public function withSingularRules(?Ruleset $singularRules, bool $reset = false): LanguageInflectorFactory
    {
        if ($reset) {
            $this->singularRulesets = [];
        }

if ($singularRules instanceof Ruleset) {
            array_unshift($this->singularRulesets, $singularRules);
        }

return $this;
    }

final public function withPluralRules(?Ruleset $pluralRules, bool $reset = false): LanguageInflectorFactory
    {
        if ($reset) {
            $this->pluralRulesets = [];
        }

if ($pluralRules instanceof Ruleset) {
            array_unshift($this->pluralRulesets, $pluralRules);
        }

return $this;
    }

abstract protected function getSingularRuleset(): Ruleset;

abstract protected function getPluralRuleset(): Ruleset;
}

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