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# -*- coding: utf-8 -*-
#
# AWL simulator - FUP compiler - Operand element
#
# Copyright 2016-2017 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.compat import *
from awlsim.fupcompiler.fupcompiler_elem import *
#from awlsim.core.instructions.all_insns cimport * #@cy
from awlsim.core.instructions.all_insns import * #@nocy
class FupCompiler_ElemOper(FupCompiler_Elem):
"""FUP compiler - Operand element.
"""
EnumGen.start
SUBTYPE_LOAD = EnumGen.item
SUBTYPE_ASSIGN = EnumGen.item
EnumGen.end
str2subtype = {
"load" : SUBTYPE_LOAD,
"assign" : SUBTYPE_ASSIGN,
}
@classmethod
def parse(cls, grid, x, y, subType, content):
try:
subType = cls.str2subtype[subType]
if subType == cls.SUBTYPE_LOAD:
return FupCompiler_ElemOperLoad(grid=grid,
x=x, y=y,
content=content)
elif subType == cls.SUBTYPE_ASSIGN:
return FupCompiler_ElemOperAssign(grid=grid,
x=x, y=y,
content=content)
except KeyError:
pass
return None
def __init__(self, grid, x, y, subType, content):
FupCompiler_Elem.__init__(self, grid=grid, x=x, y=y,
elemType=FupCompiler_Elem.TYPE_OPERAND,
subType=subType, content=content)
class FupCompiler_ElemOperLoad(FupCompiler_ElemOper):
"""FUP compiler - Operand LOAD element.
"""
# Allow multiple compilations of LOAD operand.
allowTrans_done2Running = True
def __init__(self, grid, x, y, content):
FupCompiler_ElemOper.__init__(self, grid=grid, x=x, y=y,
subType=FupCompiler_ElemOper.SUBTYPE_LOAD,
content=content)
# Constructor class used for LOAD operand.
self.__insnClass = None
def setInsnClass(self, insnClass):
self.__insnClass = insnClass
def _doCompile(self):
insns = []
insnClass = self.__insnClass
if not insnClass:
# This shall never happen.
raise AwlSimError("FUP LOAD: Load without a "
"known instruction class.")
# Translate the LOAD operand and create the
# corresponding instruction.
opDesc = self.opTrans.translateFromString(self.content)
insns.append(insnClass(cpu=None, ops=[opDesc.operator]))
return insns
class FupCompiler_ElemOperAssign(FupCompiler_ElemOper):
"""FUP compiler - Operand ASSIGN element.
"""
def __init__(self, grid, x, y, content):
FupCompiler_ElemOper.__init__(self, grid=grid, x=x, y=y,
subType=FupCompiler_ElemOper.SUBTYPE_ASSIGN,
content=content)
def _doCompile(self):
insns = []
# Only one connection allowed per ASSIGN.
if len(self.connections) != 1:
raise AwlSimError("FUP ASSIGN: Invalid number of "
"connections in '%s'." % (
str(self)))
# The connection must be input.
conn = getany(self.connections)
if not conn.dirIn or conn.dirOut or conn.pos != 0:
raise AwlSimError("FUP ASSIGN: Invalid connection "
"properties in '%s'." % (
str(self)))
# Compile the element connected to the input.
connsOut = tuple(conn.getConnected(getOutputs=True))
if len(connsOut) != 1:
raise AwlSimError("FUP ASSIGN: Multiple outbound signals "
"connected to '%s'." % (
str(self)))
otherElem = connsOut[0].elem
if otherElem.compileState == self.NOT_COMPILED:
insns.extend(otherElem.compile())
else:
insns.extend(otherElem._loadFromTemp(AwlInsn_U))
# Create the ASSIGN instruction.
opDesc = self.opTrans.translateFromString(self.content)
insns.append(AwlInsn_ASSIGN(cpu=None, ops=[opDesc.operator]))
insns.extend(otherElem._mayStoreToTemp())
# Compile additional assign operators.
# This is an optimization to avoid additional compilations
# of the whole tree. We just assign the VKE once again.
#FIXME this might lead to problems in evaluation order, if we have a branch with interleaved assigns and other elems.
for otherElem in self.sorted(conn.getConnectedElems(viaIn=True)):
if otherElem.elemType == self.TYPE_OPERAND and\
otherElem.subType == self.SUBTYPE_ASSIGN:
otherElem.compileState = self.COMPILE_RUNNING
opDesc = self.opTrans.translateFromString(otherElem.content)
insns.append(AwlInsn_ASSIGN(cpu=None, ops=[opDesc.operator]))
otherElem.compileState = self.COMPILE_DONE
return insns
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