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38 lines
1.3 KiB
Python
38 lines
1.3 KiB
Python
# This file is part of the myhdl library, a Python package for using
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# Python as a Hardware Description Language.
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#
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# Copyright (C) 2003-2008 Jan Decaluwe
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#
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# The myhdl library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public License as
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# published by the Free Software Foundation; either version 2.1 of the
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# License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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""" Module that provides the delay class."""
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_errmsg = "arg of delay constructor should be a natural integer"
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class delay(object):
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""" Class to model delay in yield statements. """
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def __init__(self, val):
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""" Return a delay instance.
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Required parameters:
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val -- a natural integer representing the desired delay
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"""
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if not isinstance(val, int) or val < 0:
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raise TypeError(_errmsg)
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self._time = val
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