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Filename : Util.php

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<?php
/**
 * Util.php
 *
 * @package   novelist
 * @copyright Copyright (c) 2021, Ashley Gibson
 * @license   GPL2+
 */

namespace Novelist\Container;

use ReflectionNamedType;

class Util
{

    /**
     * Get the class name of the given parameter's type, if possible.
     *
     * @param  \ReflectionParameter  $parameter
     *
     * @return string|null
     */
    public static function getParameterClassName($parameter)
    {
        $type = $parameter->getType();

        if (! $type instanceof ReflectionNamedType || $type->isBuiltin()) {
            return;
        }

        $name = $type->getName();

        if (! is_null($class = $parameter->getDeclaringClass())) {
            if ($name === 'self') {
                return $class->getName();
            }

            if ($name === 'parent' && $parent = $class->getParentClass()) {
                return $parent->getName();
            }
        }

        return $name;
    }

}