/**
* Compiles a route URI path.
*
* Parses the path for tokens and replaces with regex. The matched tokens
* are added to the route as the "$tokens" property. The route then knows
* what to accept as parameters if and when it is matched.
*
* @param \xpl\Routing\RouteInterface $route
*/
public function compile(RouteInterface $route)
{
$uri = $route->getUri();
$tokens = $search = $replace = array();
if (preg_match_all('#\\{(\\w+)\\}(\\?)?#', $uri, $vars)) {
foreach ($vars[1] as $i => $token) {
if (!($regex = $this->tokens->get($token))) {
throw new \InvalidArgumentException("Unknown route token: '{$token}'.");
}
$regex = "/?({$regex})";
if (!empty($vars[2][$i])) {
// Optional parameter
$regex .= '?';
}
$search[] = '/' . $vars[0][$i];
$replace[] = $regex;
$tokens[$token] = $token;
}
$uri = str_replace($search, $replace, $uri);
}
$route->setCompiledUri($uri);
$route->setTokens($tokens);
}
