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# -*- coding: utf-8 -*-
#
# AWL simulator - utility functions
#
# Copyright 2012-2015 Michael Buesch <m@bues.ch>
#
# 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.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
from __future__ import division, absolute_import, print_function, unicode_literals
from awlsim.common.compat import *
class MagicEnumerationGenerator(object):
"Magic enumeration generator"
def __init__(self):
self.__num = None
@property
def start(self):
assert(self.__num is None)
self.__num = 0
return None
@start.setter
def start(self, startNumber):
assert(self.__num is None)
self.__num = startNumber
@property
def end(self):
self.__num = None
return None
@property
def item(self):
number = self.itemNoInc
self.__num += 1
return number
@property
def bitmask(self):
mask = self.bitmaskNoInc
self.__num += 1
return mask
@property
def itemNoInc(self):
assert(self.__num is not None)
return self.__num
@property
def bitmaskNoInc(self):
return 1 << self.itemNoInc
def itemAt(self, number):
assert(self.__num is not None)
assert(number >= self.__num)
self.__num = number + 1
return number
def __repr__(self):
return "EnumGen(num = %s)" % str(self.__num)
EnumGen = MagicEnumerationGenerator()
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