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# -*- coding: utf-8 -*-
#
# AWL simulator - call parameters
#
# Copyright 2013-2017 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.exceptions import *
from awlsim.common.util import *
from awlsim.core.datastructure import * #+cimport
from awlsim.core.operatortypes import * #+cimport
from awlsim.core.operators import * #+cimport
from awlsim.core.datablocks import * #+cimport
from awlsim.core.blocks import * #+cimport
from awlsim.core.blockinterface import *
__all__ = [
"AwlParamAssign",
]
class AwlParamAssign(object): #+cdef
"""Parameter assignment for CALL.
"""
def __init__(self, lvalueName, rvalueOp):
# A parameter assignment consists of an lvalue and an rvalue:
# LVALUE := RVALUE
# 'lvalueName' is the name string of the lvalue.
# 'rvalueOp' is the AwlOperator that represents the rvalue.
self.lvalueName = lvalueName
self.rvalueOp = rvalueOp
# scratchSpaceOp attribute holds the possible AwlOperator for
# scratch space allocation.
# This element is assigned during runtime.
self.scratchSpaceOp = make_AwlOperator(operType=AwlOperatorTypes.IMM,
width=32, offset=None,
insn=None)
# 'interface' is the BlockInterface of the called block.
# This element is assigned later in the translation phase
# with a call to setInterface()
self.interface = None
# isInbound attribute is True, if this is an
# IN or IN_OUT parameter assignment.
# This element is assigned later in the translation phase
# with a call to setInterface()
self.isInbound = False
# isOutbound attribute is True, if this is an
# OUT or IN_OUT parameter assignment.
# This element is assigned later in the translation phase
# with a call to setInterface()
self.isOutbound = False
# lValueDataType attribute is the AwlDataType of the
# parameter's l-value.
# This element is assigned later in the translation phase
# with a call to setInterface()
self.lValueDataType = None
# lValueStructField attribute is the AwlStructField corresponding
# to this parameter's l-value.
# This element is assigned later in the translation phase
# with a call to setInterface()
self.lValueStructField = None
# interfaceFieldIndex attribute is the index number for the
# parameter assignment l-value in the block interface refs.
# This element is assigned later in the translation phase
# with a call to setInterface()
self.interfaceFieldIndex = -1
def __eq__(self, other): #@nocy
#@cy cpdef __eq(self, object other):
return (self is other) or (\
isinstance(other, AwlParamAssign) and\
self.lvalueName == other.lvalueName and\
self.rvalueOp == other.rvalueOp\
)
#@cy def __richcmp__(self, object other, int op):
#@cy if op == 2: # __eq__
#@cy return self.__eq(other)
#@cy elif op == 3: # __ne__
#@cy return not self.__eq(other)
#@cy return False
def __ne__(self, other): #@nocy
return not self.__eq__(other) #@nocy
def setInterface(self, interface):
self.interface = interface
self.isInbound = self.__isInbound()
self.isOutbound = self.__isOutbound()
self.lValueDataType = self.__lValueDataType()
self.lValueStructField = self.__lValueStructField()
self.interfaceFieldIndex = self.__interfaceFieldIndex()
# Store a static reference to the finalOverride in the
# struct field. This improves performance of CALLs.
structField = self.lValueStructField
if structField:
structField.finalOverride = structField.getFinalOverride()
def __isInbound(self):
field = self.interface.getFieldByName(self.lvalueName)
return field.fieldType == BlockInterfaceField.FTYPE_IN or\
field.fieldType == BlockInterfaceField.FTYPE_INOUT
def __isOutbound(self):
field = self.interface.getFieldByName(self.lvalueName)
return field.fieldType == BlockInterfaceField.FTYPE_OUT or\
field.fieldType == BlockInterfaceField.FTYPE_INOUT
def __lValueDataType(self):
# Get the l-value data type
return self.interface.getFieldByName(self.lvalueName).dataType
def __lValueStructField(self):
# Find the l-value struct field
_struct = self.interface._struct
if _struct:
return _struct.getField(self.lvalueName)
return None
def __interfaceFieldIndex(self):
# Find the index number for the l-value
return self.interface.getFieldByName(self.lvalueName).fieldIndex
def __repr__(self):
return "%s := %s" % (self.lvalueName, str(self.rvalueOp))
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