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# -*- coding: utf-8 -*-
#
# AWL simulator - Hardware module parameters
#
# Copyright 2013-2018 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.cython_support cimport * #@cy
from awlsim.common.compat import *
from awlsim.common.enumeration import *
from awlsim.common.util import *
from awlsim.common.exceptions import *
from awlsim.common.cpuconfig import *
from awlsim.core.operatortypes import * #+cimport
from awlsim.awlcompiler.optrans import *
import re
__all__ = [ "HwParamDesc",
"HwParamDesc_str",
"HwParamDesc_int",
"HwParamDesc_float",
"HwParamDesc_bool",
"HwParamDesc_oper",
]
class HwParamDesc(object):
"""Abstract hardware parameter descriptor."""
class ParseError(Exception):
pass
typeStr = "<NoType>"
userEditable = True
defaultValue = None # Default value; represented as parsed value
defaultValueStr = None # Default value; represented as parser input string
def __init__(self, name,
description="",
mandatory=False,
hidden=False,
deprecated=False,
compatReplacement="",
replacement=""):
"""
name: The parameter name string.
description: The parameter description string.
mandatory: If True, then this parameter must be specified.
hidden: If True, then this parameter will not be shown by default.
deprecated: If True, then the use of this parameter is discouraged.
compatReplacement: Optional name of a fully compatible parameter
that replaces this one. (Also see 'deprecated').
replacement: Optional name of an incompatible parameter
that replaces this one. (Also see 'deprecated').
"""
self.name = name
self.description = description
self.mandatory = mandatory
self.hidden = hidden
self.deprecated = deprecated
self.compatReplacement = compatReplacement
self.replacement = replacement
def parse(self, value):
"""Parse a value string.
This must be overridden.
"""
raise NotImplementedError
def match(self, matchName):
"""Match a name string.
The default implementation just compares the string to self.name.
The parameter must not be 'mandatory', if this method is overridden.
"""
return self.name == matchName
class HwParamDesc_str(HwParamDesc):
"""String hardware parameter descriptor."""
typeStr = "string"
def __init__(self, name, defaultValue="", **kwargs):
HwParamDesc.__init__(self, name, **kwargs)
self.defaultValue = defaultValue
self.defaultValueStr = defaultValue
def parse(self, value):
if not value.strip():
return self.defaultValue
return value
class HwParamDesc_int(HwParamDesc):
"""Integer hardware parameter descriptor."""
typeStr = "integer"
def __init__(self, name,
defaultValue=0, minValue=None, maxValue=None, **kwargs):
HwParamDesc.__init__(self, name, **kwargs)
self.defaultValue = defaultValue
self.defaultValueStr = None if defaultValue is None else str(defaultValue)
self.minValue = minValue
self.maxValue = maxValue
def parse(self, value):
value = value.strip()
if not value:
return self.defaultValue
valueUpper = value.upper()
if valueUpper.startswith("B#16#") or\
valueUpper.startswith("W#16#"):
value = "0x" + value[5:]
elif valueUpper.startswith("DW#16#"):
value = "0x" + value[6:]
elif valueUpper.startswith("L#"):
value = value[2:] # Strip L# prefix
try:
value = int(value)
except ValueError:
raise self.ParseError("Value '%s' is not a valid integer." %\
str(value))
if self.minValue is not None:
if value < self.minValue:
raise self.ParseError("Value '%d' is too small." % value)
if self.maxValue is not None:
if value > self.maxValue:
raise self.ParseError("Value '%d' is too big." % value)
return value
class HwParamDesc_float(HwParamDesc):
"""Float hardware parameter descriptor."""
typeStr = "float"
def __init__(self, name,
defaultValue=0.0, minValue=None, maxValue=None, **kwargs):
HwParamDesc.__init__(self, name, **kwargs)
self.defaultValue = defaultValue
self.defaultValueStr = None if defaultValue is None else str(defaultValue)
self.minValue = minValue
self.maxValue = maxValue
def parse(self, value):
if not value.strip():
return self.defaultValue
try:
value = float(value)
except ValueError:
raise self.ParseError("Value '%s' is not a valid floating point number." %\
str(value))
if self.minValue is not None:
if value < self.minValue:
raise self.ParseError("Value '%f' is too small." % value)
if self.maxValue is not None:
if value > self.maxValue:
raise self.ParseError("Value '%f' is too big." % value)
return value
class HwParamDesc_bool(HwParamDesc):
"""Boolean hardware parameter descriptor."""
typeStr = "boolean"
def __init__(self, name, defaultValue=False, **kwargs):
HwParamDesc.__init__(self, name, **kwargs)
self.defaultValue = None if defaultValue is None else bool(defaultValue)
self.defaultValueStr = None if defaultValue is None else str(bool(defaultValue))
def parse(self, value):
value = value.strip()
if not value:
return self.defaultValue
if value.lower() in ("true", "yes", "on"):
return True
if value.lower() in ("false", "no", "off"):
return False
try:
value = int(value, 10)
except ValueError:
raise self.ParseError("Value '%s' is not a valid boolean." %\
str(value))
return bool(value)
class HwParamDesc_oper(HwParamDesc):
"""Hardware parameter descriptor for operators.
"""
typeStr = "operator"
def __init__(self, name,
allowedOperTypes=(),
allowedOperWidths=(),
**kwargs):
HwParamDesc.__init__(self, name, **kwargs)
self.allowedOperTypes = allowedOperTypes
self.allowedOperWidths = allowedOperWidths
numRe = re.compile(r'^\-?\d+$', re.DOTALL)
def __tryParse(self, value, mnemonics):
# Add a L# prefix, if this is a constant long integer.
if self.numRe.match(value):
try:
v = int(value, 10)
if (v > 32767 and v <= 2147483647) or\
(v < -32768 and v >= -2147483648):
value = "L#" + value
except ValueError as e:
pass
# Parse value as operator.
try:
trans = AwlOpTranslator(mnemonics=mnemonics)
opDesc = trans.translateFromString(value)
oper = opDesc.operator
except AwlSimError as e:
oper = None
return oper
def parse(self, value):
if not value.strip():
return None
oper = self.__tryParse(value, S7CPUConfig.MNEMONICS_EN)
if not oper:
oper = self.__tryParse(value, S7CPUConfig.MNEMONICS_DE)
if not oper:
raise self.ParseError("Operator '%s' "
"is not valid." % value)
if self.allowedOperTypes:
if oper.operType not in self.allowedOperTypes:
raise self.ParseError("Operator '%s' "
"does not have a valid type." % value)
if self.allowedOperWidths:
if oper.width not in self.allowedOperWidths:
raise self.ParseError("Operator '%s' "
"does not have a valid bit width. "
"Valid widths are: %s bits." % (
value, listToHumanStr(self.allowedOperWidths)))
return oper
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