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# -*- coding: utf-8 -*-
#
# AWL simulator - call parameters
#
# Copyright 2013 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 awlsim.datastructure import *
from awlsim.datablocks import *
from awlsim.blocks import *
from awlsim.util import *
class AwlParamAssign(object):
"Parameter assignment for CALL"
def __init__(self, lvalueName, rvalueOp):
self.lvalueName = lvalueName
self.rvalueOp = rvalueOp
def __retTrue(self, interface):
return True
def __retFalse(self, interface):
return False
# Re-assign the isInbound() and isOutbound() methods
# to methods return static values.
def __reassignMethods(self, interface):
self.isInbound, self.isOutbound = self.__retFalse, self.__retFalse
field = interface.getFieldByName(self.lvalueName)
if field.fieldType == BlockInterface.Field.FTYPE_IN or\
field.fieldType == BlockInterface.Field.FTYPE_INOUT:
self.isInbound = self.__retTrue
if field.fieldType == BlockInterface.Field.FTYPE_OUT or\
field.fieldType == BlockInterface.Field.FTYPE_INOUT:
self.isOutbound = self.__retTrue
def isInbound(self, interface):
self.__reassignMethods(interface)
# Call the re-assigned method
return self.isInbound(None)
def isOutbound(self, interface):
self.__reassignMethods(interface)
# Call the re-assigned method
return self.isOutbound(None)
def __getLvalueStructField_static(self, interfaceDB):
return self.__LvaluestructField
# Get the AwlStructField corresponding to this parameter lvalue
def getLvalueStructField(self, interfaceDB):
self.__LvaluestructField = interfaceDB.structInstance.struct.getField(self.lvalueName)
self.getLvalueStructField = self.__getLvalueStructField_static
# Call the re-assigned method
return self.getLvalueStructField(None)
def __repr__(self):
return "%s := %s" % (self.lvalueName, str(self.rvalueOp))
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