ChainResolver.php

<?php

namespace WPDesk\View\Resolver;


use WPDesk\View\Renderer\Renderer;
use WPDesk\View\Resolver\Exception\CanNotResolve;

/**
 * Provide resolvers and this class can try them one after another
 *
 * @package WPDesk\View\Resolver
 */
class ChainResolver implements Resolver
{
    /** @var Resolver[] */
    private $resolvers;

    /**
     * Warning: function with variadic input. Input should be list of Resolver instances.
     */
    public function __construct()
    {
        $args = func_get_args();
        foreach ($args as $resolver) {
            $this->appendResolver($resolver);
        }
    }

    /**
     * Append resolver to the end of the list
     *
     * @param Resolver $resolver
     */
    public function appendResolver( $resolver)
    {
        $this->resolvers[] = $resolver;
    }

    /**
     * Resolve name to full path
     *
     * @param string $name
     * @param Renderer|null $renderer
     *
     * @return string
     */
    public function resolve($name, Renderer $renderer = null)
    {
        foreach ($this->resolvers as $resolver) {
            try {
                return $resolver->resolve($name);
            } catch (CanNotResolve $e) {
                // not interested
            }
        }

        throw new CanNotResolve("Cannot resolve {$name}");
    }

}