Formal.php

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<?php
namespace Wikimedia\Leximorph\Handler;
 
use Wikimedia\Leximorph\Provider;
 
class Formal {
 
    public function __construct(
        private readonly Provider $provider,
    ) {
    }
 
    public function process( array $options ): string {
        $informal = $options[0];
        $formal = $options[1] ?? $informal;
 
        $index = $this->provider->getFormalityIndexProvider()->getFormalityIndex();
 
        return ( $index === 1 ) ? $formal : $informal;
    }
}