lexComment example

 elseif ($this->options['whitespace_line_trim'] === $this->positions[2][$this->position][0]) {
                // whitespace_line_trim detected ({%~, {{~ or {#~)                 // don't trim \r and \n                 $text = rtrim($text, " \t\0\x0B");
            }
        }
        $this->pushToken(/* Token::TEXT_TYPE */ 0, $text);
        $this->moveCursor($textContent.$position[0]);

        switch ($this->positions[1][$this->position][0]) {
            case $this->options['tag_comment'][0]:
                $this->lexComment();
                break;

            case $this->options['tag_block'][0]:
                // raw data?                 if (preg_match($this->regexes['lex_block_raw'], $this->code, $match, 0, $this->cursor)) {
                    $this->moveCursor($match[0]);
                    $this->lexRawData();
                // {% line \d+ %}                 } elseif (preg_match($this->regexes['lex_block_line'], $this->code, $match, 0, $this->cursor)) {
                    $this->moveCursor($match[0]);
                    $this->lineno = (int) $match[1];
                }