/**
* @param $prefix
* @param $rules
* @return mixed
* @throws \Hoa\Compiler\Exception
* @throws \Hoa\Regex\Exception
*/
public function generate($prefix, $rules)
{
$grammar = new Read('hoa://Library/Regex/Grammar.pp');
$compiler = Llk::load($grammar);
$ast = $compiler->parse($prefix . $rules);
$generator = new Isotropic(new Random());
return $generator->visit($ast);
}
/**
* Sample one new value.
*
* @param \Hoa\Math\Sampler $sampler Sampler.
* @return mixed
*/
protected function _sample(Math\Sampler $sampler)
{
if (null === self::$_visitor) {
self::$_visitor = new HoaRegex\Visitor\Isotropic($sampler);
}
return self::$_visitor->visit($this->_ast);
}