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# ListNode.py
# $Id: ListNode.py,v 1.6 2001/07/11 22:43:09 s2mdalle Exp $
# Nodes to be placed in List objects.
# Subclass freely! Life is short!
#
# Written by David Allen <mda@idatar.com>
#
# 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 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.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#############################################################################
class ListNode:
def __init__(self, data=None, next=None, prev=None):
self.next = next
self.prev = prev
self.data = data
return None
def __str__(self):
return self.data.__str__
def __repr__(self):
return self.data.__repr__
def getNext(self):
"""Return the next item in the list"""
return self.next
def getPrev(self):
"""Return the previous item in the list"""
return self.prev
def getData(self):
"""Return the data inside this object Node"""
return self.data
def setNext(self, newnext):
"""Set the next item in the list"""
self.next = newnext
return self.next
def setPrev(self, newprev):
"""Set the previous item in the list"""
self.prev = newprev
return self.prev
def setData(self, data):
"""Set the data inside the object."""
self.data = data
return self.data
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