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# Data-type class definitions for GDBtk.
# Copyright 1997, 1998, 1999 Cygnus Solutions
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License (GPL) as published by
# the Free Software Foundation; either version 2 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.

# Generic Stack
class Stack {

  public {
    method constructor {}
    method destructor {}

    # Pop the stack. Empty string means empty stack.
    method pop {}

    # Push ARGS onto the stack.
    method push {args}
  }

  protected variable _stack
}

# Generic Queue
class Queue {
  inherit Stack

  public {
    method constructor {}
    method destructor {}

    # Pop the queue. Empty string means empty queue.
    method pop {}
  }
}