# $Id$
#
# Copyright (C) 2003-2006 greg Landrum and Rational Discovery LLC
#
#   @@ All Rights Reserved @@
#  This file is part of the RDKit.
#  The contents are covered by the terms of the BSD license
#  which is included in the file license.txt, found at the root
#  of the RDKit source tree.
#
""" #DOC


"""

class BitEnsemble(object):
  """  used to store a collection of bits and score
  BitVects (or signatures) against them.

  """
  def __init__(self,bits=None):
    if bits is not None:
      self._bits = list(bits)
    else:
      self._bits = []
  def SetBits(self,bits):
    self._bits = list(bits)
  def AddBit(self,bit):
    self._bits.append(bit)
  def GetBits(self):
    return tuple(self._bits)
  def GetNumBits(self):
    return len(self._bits)

  def ScoreWithOnBits(self,other):
    """ other must support GetOnBits() """
    obl = other.GetOnBits()
    cnt = 0
    for bit in self.GetBits():
      if bit in obl: cnt += 1
    return cnt  
    

  def ScoreWithIndex(self,other):
    """ other must support __getitem__() """
    cnt = 0
    for bit in self.GetBits():
      if other[bit]: cnt += 1
    return cnt  


if __name__=='__main__':

  pass