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Viewing: ParamReader.php

<?php

/*
 * This file is part of the FOSRestBundle package.
 *
 * (c) FriendsOfSymfony <http://friendsofsymfony.github.com/>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace FOS\RestBundle\Request;

use Doctrine\Common\Annotations\Reader;
use FOS\RestBundle\Controller\Annotations\ParamInterface;

/**
 * Class loading "@ParamInterface" annotations from methods.
 *
 * @author Alexander <iam.asm89@gmail.com>
 * @author Lukas Kahwe Smith <smith@pooteeweet.org>
 * @author Boris Guéry  <guery.b@gmail.com>
 */
class ParamReader implements ParamReaderInterface
{
    private $annotationReader;

    /**
     * Initializes controller reader.
     *
     * @param Reader $annotationReader
     */
    public function __construct(Reader $annotationReader)
    {
        $this->annotationReader = $annotationReader;
    }

    /**
     * {@inheritdoc}
     */
    public function read(\ReflectionClass $reflection, $method)
    {
        if (!$reflection->hasMethod($method)) {
            throw new \InvalidArgumentException(sprintf("Class '%s' has no method '%s'.", $reflection->getName(), $method));
        }

        $methodParams = $this->getParamsFromMethod($reflection->getMethod($method));
        $classParams = $this->getParamsFromClass($reflection);

        return array_merge($methodParams, $classParams);
    }

    /**
     * {@inheritdoc}
     */
    public function getParamsFromMethod(\ReflectionMethod $method)
    {
        $annotations = $this->annotationReader->getMethodAnnotations($method);

        return $this->getParamsFromAnnotationArray($annotations);
    }

    /**
     * {@inheritdoc}
     */
    public function getParamsFromClass(\ReflectionClass $class)
    {
        $annotations = $this->annotationReader->getClassAnnotations($class);

        return $this->getParamsFromAnnotationArray($annotations);
    }

    /**
     * Fetches parameters from provided annotation array (fetched from annotationReader).
     *
     * @param array $annotations
     *
     * @return ParamInterface[]
     */
    private function getParamsFromAnnotationArray(array $annotations)
    {
        $params = array();
        foreach ($annotations as $annotation) {
            if ($annotation instanceof ParamInterface) {
                $params[$annotation->getName()] = $annotation;
            }
        }

        return $params;
    }
}
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