# Class Parser.LR.Parser()->StateQueue

Description

  This is a queue, which keeps the elements even after they are retrieved.

Variable arr

  ``array`(`Kernel`) Parser.LR.Parser.StateQueue.arr`

Description

  The queue itself.

Variable head

  ``int` Parser.LR.Parser.StateQueue.head`

Description

  Index of the head of the queue.

Variable tail

  ``int` Parser.LR.Parser.StateQueue.tail`

Description

  Index of the tail of the queue.