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# -*- coding: utf-8 -*-
#
# AWL simulator - FUP compiler - Grid
#
# Copyright 2016 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.common.xmlfactory import *
from awlsim.fupcompiler.fupcompiler_base import *
from awlsim.fupcompiler.fupcompiler_conn import *
from awlsim.fupcompiler.fupcompiler_wire import *
from awlsim.fupcompiler.fupcompiler_elem import *
class FupCompiler_GridFactory(XmlFactory):
def parser_open(self, tag=None):
XmlFactory.parser_open(self, tag)
def parser_beginTag(self, tag):
if tag.name == "wires":
self.parser_switchTo(FupCompiler_Wire.factory(grid=self.grid))
return
if tag.name == "elements":
self.parser_switchTo(FupCompiler_Elem.factory(grid=self.grid))
return
XmlFactory.parser_beginTag(self, tag)
def parser_endTag(self, tag):
if tag.name == "grid":
self.parser_finish()
return
XmlFactory.parser_endTag(self, tag)
class FupCompiler_Grid(FupCompiler_BaseObj):
factory = FupCompiler_GridFactory
def __init__(self, compiler):
FupCompiler_BaseObj.__init__(self)
self.compiler = compiler # FupCompiler
self.wires = {} # FupCompiler_Wire
self.elems = set() # FupCompiler_Elem
def addWire(self, wire):
if wire.idNum in self.wires:
return False
self.wires[wire.idNum] = wire
return True
def getWire(self, wireId):
try:
if wireId >= 0:
return self.wires[wireId]
except KeyError:
pass
return None
def addElem(self, elem):
self.elems.add(elem)
def compile(self):
"""Compile this FUP grid to AWL.
Returns a list of instructions.
"""
if self.compileState == self.COMPILE_DONE:
return []
self.compileState = self.COMPILE_RUNNING
insns = []
# Resolve all wire-IDs
for wire in dictValues(self.wires):
wire.connections = set()
for elem in self.elems:
for conn in elem.connections:
if conn.wireId == -1:
raise AwlSimError("FUP: Unconnected pin found "
"in FUP element.")
wire = self.getWire(conn.wireId)
if not wire:
raise AwlSimError("FUP: Wire with ID %d "
"does not exist" % (conn.wireId))
wire.connections.add(conn)
conn.wire = wire
for wire in dictValues(self.wires):
if len(wire.connections) == 0:
raise AwlSimError("FUP: Found unconnected wire %s" % (
str(wire)))
if len(wire.connections) == 1:
raise AwlSimError("FUP: Found dangling wire "
"%s with only one connection" % (
str(wire)))
# Find all assignment operators and walk the logic chain upwards.
for elem in FupCompiler_Elem.sorted(self.elems):
if elem.elemType == elem.TYPE_OPERAND and\
elem.subType == elem.SUBTYPE_ASSIGN:
insns.extend(elem.compile())
# Check if all elements have been compiled.
for elem in self.elems:
if elem.compileState != elem.COMPILE_DONE:
raise AwlSimError("FUP: Found dangling element "
"'%s'. Please make sure all connections of "
"this element are connected." % (
str(elem)))
self.compileState = self.COMPILE_DONE
return insns
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