sam-t2/sam/cpus/vonk/bl/api/pfe/src/Pfe_Slicer.py

# ========== Copyright Header Begin ==========================================
#
# OpenSPARC T2 Processor File: Pfe_Slicer.py
# Copyright (c) 2006 Sun Microsystems, Inc.  All Rights Reserved.
# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES.
#
# The above named program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public
# License version 2 as published by the Free Software Foundation.
#
# The above named 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 work; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ========== Copyright Header End ============================================


class Slicer:
  """
  Slicer(list) takes a list as argument. When a Slicer
  object is subscribted it returns a sublist of the list.
  For example:

  s = Slicer(range(0,64))
  s[0]                  => [0]
  s[0,2]                => [0,2]
  s[0:2]                => [0,1]
  s[0:2,4]              => [0,1,4]
  s[0:4:2]              => [0,2,4]
  s[0:2,4:6]            => [0,1,4,5]

  """
  def __init__(self,list):
    self.list = list

  def __getitem__(self,index):
    if type(index) == tuple:
      l = []
      for i in index:
        if type(i) == slice:
          l.extend(self.list[i])
        else:
          l.append(self.list[i])
      return l
    elif type(index) == slice:
      return self.list[index]
    else:
      return [self.list[index]]


if __name__ == '__main__':
  s=Slicer(range(0,64))

  print s[0]
  print s[0:32]
  print s[0,8,16,56,64]
  print s[0:32:8]
  print s[0:8,8:16]
  print s[0:8,8:16,32,56:64]