/**
 * Marlin 3D Printer Firmware
 * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
 *
 * Based on Sprinter and grbl.
 * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 */

#include "../gcode.h"
#include "../queue.h" // for last_N

/**
 * M110: Get or set Current Line Number
 *
 * Parameters:
 *   N<int>  Number to set as last-processed command
 *
 * Without parameters:
 *   Report the last-processed (not last-received or last-enqueued) command
 *   (To purge the queue and resume from this line, the host should use 'M999' instead.)
 */
void GcodeSuite::M110() {

  if (parser.seenval('N'))
    queue.set_current_line_number(parser.value_long());
  else
    SERIAL_ECHOLNPGM(STR_LINE_NO, queue.get_current_line_number());
}
