smuuf/primi

<?php

declare(strict_types=1);

namespace Smuuf\Primi\Handlers\Kinds;

use \Smuuf\Primi\Context;
use \Smuuf\Primi\Ex\RuntimeError;
use \Smuuf\Primi\Values\AbstractValue;
use \Smuuf\Primi\Handlers\ChainedHandler;
use \Smuuf\Primi\Handlers\HandlerFactory;

class Dereference extends ChainedHandler {

    public static function chain(
        array $node,
        Context $context,
        AbstractValue $subject
    ) {

        $key = HandlerFactory::runNode($node['key'], $context);

        $returned = $subject->itemGet($key);
        if ($returned === \null) {
            throw new RuntimeError(\sprintf(
                "Type '%s' does not support item access",
                $subject->getTypeName()
            ));
        }

        return $returned;

    }

}