protected function getTokens()
    {
        if ($this->tokens === null) {
            $this->tokens = $this->parsePattern($this->pattern);
        }

        return $this->tokens;
    }
protected function getTokens()
    {
        if ($this->tokens === null) {
            $this->tokens = $this->parsePattern($this->pattern);
        }

        return $this->tokens;
    }
protected function getTokens ( ) { if ( $ this -> tokens === null ) { $ this -> tokens = $ this -> parsePattern ( $ this -> pattern ) ; } return $ this -> tokens ; }
Gets parsed tokens.

@return array
Gets parsed tokens .