vendor/guzzle/guzzle/src/Guzzle/Http/Message/RequestFactory.php

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<?php

namespace Guzzle\Http\Message;

use Guzzle\Common\Collection;
use Guzzle\Common\Exception\InvalidArgumentException;
use Guzzle\Http\RedirectPlugin;
use Guzzle\Http\Url;
use Guzzle\Parser\ParserRegistry;

/**
 * Default HTTP request factory used to create the default {@see Request} and {@see EntityEnclosingRequest} objects.
 */
class RequestFactory implements RequestFactoryInterface
{
    /** @var RequestFactory Singleton instance of the default request factory */
    protected static $instance;

    /** @var array Hash of methods available to the class (provides fast isset() lookups) */
    protected $methods;

    /** @var string Class to instantiate for requests with no body */
    protected $requestClass = 'Guzzle\\Http\\Message\\Request';

    /** @var string Class to instantiate for requests with a body */
    protected $entityEnclosingRequestClass = 'Guzzle\\Http\\Message\\EntityEnclosingRequest';

    /**
     * Get a cached instance of the default request factory
     *
     * @return RequestFactory
     */
    public static function getInstance()
    {
        // @codeCoverageIgnoreStart
        if (!static::$instance) {
            static::$instance = new static();
        }
        // @codeCoverageIgnoreEnd

        return static::$instance;
    }

    public function __construct()
    {
        $this->methods = array_flip(get_class_methods(__CLASS__));
    }

    public function fromMessage($message)
    {
        $parsed = ParserRegistry::getInstance()->getParser('message')->parseRequest($message);

        if (!$parsed) {
            return false;
        }

        $request = $this->fromParts($parsed['method'], $parsed['request_url'],
            $parsed['headers'], $parsed['body'], $parsed['protocol'],
            $parsed['version']);