function next_no_whitespace() {
		$this->token_start = null;

		while (++$this->pos < $this->size) {
			if (!isset($this->whitespace[$this->doc[$this->pos]])) {
				if (isset($this->char_map[$this->doc[$this->pos]])) {
					if (is_string($this->char_map[$this->doc[$this->pos]])) {
						return ($this->token = $this->{$this->char_map[$this->doc[$this->pos]]}());
					} else {
						return ($this->token = $this->char_map[$this->doc[$this->pos]]);
					}
				} else {
					return ($this->token = self::TOK_UNKNOWN);
				}
			} else {
				$this->parse_linebreak();
			}
		}

		return ($this->token = self::TOK_NULL);
	}