/**
* Get AST of the token representation.
*
* @return \Hoa\Compiler\Llk\TreeNode
*/
public function getAST()
{
if (null === static::$_regexCompiler) {
$stream = new File\Read('hoa://Library/Regex/Grammar.pp');
$stream->rewind();
static::$_regexCompiler = Compiler\Llk::load($stream);
}
if (null === $this->_ast) {
$this->_ast = static::$_regexCompiler->parse($this->getRepresentation());
}
return $this->_ast;
}
