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PLCGenerator.py
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PLCGenerator.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# This file is part of Beremiz, a Integrated Development Environment for
# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.
#
# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
#
# See COPYING file for copyrights details.
#
# 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 absolute_import
import re
from functools import reduce
from six.moves import xrange
from plcopen import PLCOpenParser
from plcopen.structures import *
from plcopen.types_enums import *
# Dictionary associating PLCOpen variable categories to the corresponding
# IEC 61131-3 variable categories
varTypeNames = {"localVars": "VAR", "tempVars": "VAR_TEMP", "inputVars": "VAR_INPUT",
"outputVars": "VAR_OUTPUT", "inOutVars": "VAR_IN_OUT", "externalVars": "VAR_EXTERNAL",
"globalVars": "VAR_GLOBAL", "accessVars": "VAR_ACCESS"}
# Dictionary associating PLCOpen POU categories to the corresponding
# IEC 61131-3 POU categories
pouTypeNames = {"function": "FUNCTION", "functionBlock": "FUNCTION_BLOCK", "program": "PROGRAM"}
errorVarTypes = {
"VAR_INPUT": "var_input",
"VAR_OUTPUT": "var_output",
"VAR_INOUT": "var_inout",
}
def ReIndentText(text, nb_spaces):
""" Helper function for reindenting text """
compute = ""
lines = text.splitlines()
if len(lines) > 0:
line_num = 0
while line_num < len(lines) and len(lines[line_num].strip()) == 0:
line_num += 1
if line_num < len(lines):
spaces = 0
while lines[line_num][spaces] == " ":
spaces += 1
indent = ""
for dummy in xrange(spaces, nb_spaces):
indent += " "
for line in lines:
if line != "":
compute += "%s%s\n" % (indent, line)
else:
compute += "\n"
return compute
def SortInstances(a, b):
ax, ay = int(a.getx()), int(a.gety())
bx, by = int(b.getx()), int(b.gety())
if abs(ay - by) < 10:
return cmp(ax, bx)
else:
return cmp(ay, by)
def JoinList(separator, mylist):
""" Helper for emulate join on element list """
if len(mylist) > 0:
return reduce(lambda x, y: x + separator + y, mylist)
else:
return mylist
# -------------------------------------------------------------------------------
# Specific exception for PLC generating errors
# -------------------------------------------------------------------------------
class PLCGenException(Exception):
pass
# -------------------------------------------------------------------------------
# Generator of PLC program
# -------------------------------------------------------------------------------
class ProgramGenerator(object):
# Create a new PCL program generator
def __init__(self, controler, project, errors, warnings):
# Keep reference of the controler and project
self.Controler = controler
self.Project = project
# Reset the internal variables used to generate PLC programs
self.Program = []
self.DatatypeComputed = {}
self.PouComputed = {}
self.Errors = errors
self.Warnings = warnings
# Compute value according to type given
def ComputeValue(self, value, var_type):
base_type = self.Controler.GetBaseType(var_type)
if base_type == "STRING" and not value.startswith("'") and not value.endswith("'"):
return "'%s'" % value
elif base_type == "WSTRING" and not value.startswith('"') and not value.endswith('"'):
return "\"%s\"" % value
return value
# Generate a data type from its name
def GenerateDataType(self, datatype_name):
# Verify that data type hasn't been generated yet
if not self.DatatypeComputed.get(datatype_name, True):
# If not mark data type as computed
self.DatatypeComputed[datatype_name] = True
# Getting datatype model from project
datatype = self.Project.getdataType(datatype_name)
tagname = ComputeDataTypeName(datatype.getname())
datatype_def = [(" ", ()),
(datatype.getname(), (tagname, "name")),
(" : ", ())]
basetype_content = datatype.baseType.getcontent()
basetype_content_type = basetype_content.getLocalTag()
# Data type derived directly from a user defined type
if basetype_content_type == "derived":
basetype_name = basetype_content.getname()
self.GenerateDataType(basetype_name)
datatype_def += [(basetype_name, (tagname, "base"))]
# Data type is a subrange
elif basetype_content_type in ["subrangeSigned", "subrangeUnsigned"]:
base_type = basetype_content.baseType.getcontent()
base_type_type = base_type.getLocalTag()
# Subrange derived directly from a user defined type
if base_type_type == "derived":
basetype_name = base_type_type.getname()
self.GenerateDataType(basetype_name)
# Subrange derived directly from an elementary type
else:
basetype_name = base_type_type
min_value = basetype_content.range.getlower()
max_value = basetype_content.range.getupper()
datatype_def += [(basetype_name, (tagname, "base")),
(" (", ()),
("%s" % min_value, (tagname, "lower")),
("..", ()),
("%s" % max_value, (tagname, "upper")),
(")", ())]
# Data type is an enumerated type
elif basetype_content_type == "enum":
values = [[(value.getname(), (tagname, "value", i))]
for i, value in enumerate(
basetype_content.xpath("ppx:values/ppx:value",
namespaces=PLCOpenParser.NSMAP))]
datatype_def += [("(", ())]
datatype_def += JoinList([(", ", ())], values)
datatype_def += [(")", ())]
# Data type is an array
elif basetype_content_type == "array":
base_type = basetype_content.baseType.getcontent()
base_type_type = base_type.getLocalTag()
# Array derived directly from a user defined type
if base_type_type == "derived":
basetype_name = base_type.getname()
self.GenerateDataType(basetype_name)
# Array derived directly from an elementary type
else:
basetype_name = base_type_type.upper()
dimensions = [[("%s" % dimension.getlower(), (tagname, "range", i, "lower")),
("..", ()),
("%s" % dimension.getupper(), (tagname, "range", i, "upper"))]
for i, dimension in enumerate(basetype_content.getdimension())]
datatype_def += [("ARRAY [", ())]
datatype_def += JoinList([(",", ())], dimensions)
datatype_def += [("] OF ", ()),
(basetype_name, (tagname, "base"))]
# Data type is a structure
elif basetype_content_type == "struct":
elements = []
for i, element in enumerate(basetype_content.getvariable()):
element_type = element.type.getcontent()
element_type_type = element_type.getLocalTag()
# Structure element derived directly from a user defined type
if element_type_type == "derived":
elementtype_name = element_type.getname()
self.GenerateDataType(elementtype_name)
elif element_type_type == "array":
base_type = element_type.baseType.getcontent()
base_type_type = base_type.getLocalTag()
# Array derived directly from a user defined type
if base_type_type == "derived":
basetype_name = base_type.getname()
self.GenerateDataType(basetype_name)
# Array derived directly from an elementary type
else:
basetype_name = base_type_type.upper()
dimensions = ["%s..%s" % (dimension.getlower(), dimension.getupper())
for dimension in element_type.getdimension()]
elementtype_name = "ARRAY [%s] OF %s" % (",".join(dimensions), basetype_name)
# Structure element derived directly from an elementary type
else:
elementtype_name = element_type_type.upper()
element_text = [("\n ", ()),
(element.getname(), (tagname, "struct", i, "name")),
(" : ", ()),
(elementtype_name, (tagname, "struct", i, "type"))]
if element.initialValue is not None:
element_text.extend([(" := ", ()),
(self.ComputeValue(element.initialValue.getvalue(), elementtype_name), (tagname, "struct", i, "initial value"))])
element_text.append((";", ()))
elements.append(element_text)
datatype_def += [("STRUCT", ())]
datatype_def += JoinList([("", ())], elements)
datatype_def += [("\n END_STRUCT", ())]
# Data type derived directly from a elementary type
else:
datatype_def += [(basetype_content_type.upper(), (tagname, "base"))]
# Data type has an initial value
if datatype.initialValue is not None:
datatype_def += [(" := ", ()),
(self.ComputeValue(datatype.initialValue.getvalue(), datatype_name), (tagname, "initial value"))]
datatype_def += [(";\n", ())]
self.Program += datatype_def
# Generate a POU from its name
def GeneratePouProgram(self, pou_name):
# Verify that POU hasn't been generated yet
if not self.PouComputed.get(pou_name, True):
# If not mark POU as computed
self.PouComputed[pou_name] = True
# Getting POU model from project
pou = self.Project.getpou(pou_name)
pou_type = pou.getpouType()
# Verify that POU type exists
if pou_type in pouTypeNames:
# Create a POU program generator
pou_program = PouProgramGenerator(self, pou.getname(), pouTypeNames[pou_type], self.Errors, self.Warnings)
program = pou_program.GenerateProgram(pou)
self.Program += program
else:
raise PLCGenException(_("Undefined pou type \"%s\"") % pou_type)
# Generate a POU defined and used in text
def GeneratePouProgramInText(self, text):
for pou_name in self.PouComputed.keys():
model = re.compile("(?:^|[^0-9^A-Z])%s(?:$|[^0-9^A-Z])" % pou_name.upper())
if model.search(text) is not None:
self.GeneratePouProgram(pou_name)
# Generate a configuration from its model
def GenerateConfiguration(self, configuration):
tagname = ComputeConfigurationName(configuration.getname())
config = [("\nCONFIGURATION ", ()),
(configuration.getname(), (tagname, "name")),
("\n", ())]
var_number = 0
varlists = [(varlist, varlist.getvariable()[:]) for varlist in configuration.getglobalVars()]
extra_variables = self.Controler.GetConfigurationExtraVariables()
extra_global_vars = None
if len(extra_variables) > 0 and len(varlists) == 0:
extra_global_vars = PLCOpenParser.CreateElement("globalVars", "interface")
configuration.setglobalVars([extra_global_vars])
varlists = [(extra_global_vars, [])]
for variable in extra_variables:
varlists[-1][0].appendvariable(variable)
varlists[-1][1].append(variable)
# Generate any global variable in configuration
for varlist, varlist_variables in varlists:
variable_type = errorVarTypes.get("VAR_GLOBAL", "var_local")
# Generate variable block with modifier
config += [(" VAR_GLOBAL", ())]
if varlist.getconstant():
config += [(" CONSTANT", (tagname, variable_type, (var_number, var_number + len(varlist.getvariable())), "constant"))]
elif varlist.getretain():
config += [(" RETAIN", (tagname, variable_type, (var_number, var_number + len(varlist.getvariable())), "retain"))]
elif varlist.getnonretain():
config += [(" NON_RETAIN", (tagname, variable_type, (var_number, var_number + len(varlist.getvariable())), "non_retain"))]
config += [("\n", ())]
# Generate any variable of this block
for var in varlist_variables:
vartype_content = var.gettype().getcontent()
if vartype_content.getLocalTag() == "derived":
var_type = vartype_content.getname()
self.GenerateDataType(var_type)
else:
var_type = var.gettypeAsText()
config += [(" ", ()),
(var.getname(), (tagname, variable_type, var_number, "name")),
(" ", ())]
# Generate variable address if exists
address = var.getaddress()
if address:
config += [("AT ", ()),
(address, (tagname, variable_type, var_number, "location")),
(" ", ())]
config += [(": ", ()),
(var.gettypeAsText(), (tagname, variable_type, var_number, "type"))]
# Generate variable initial value if exists
initial = var.getinitialValue()
if initial is not None:
config += [(" := ", ()),
(self.ComputeValue(initial.getvalue(), var_type), (tagname, variable_type, var_number, "initial value"))]
config += [(";\n", ())]
var_number += 1
config += [(" END_VAR\n", ())]
if extra_global_vars is not None:
configuration.remove(extra_global_vars)
else:
for variable in extra_variables:
varlists[-1][0].remove(variable)
# Generate any resource in the configuration
for resource in configuration.getresource():
config += self.GenerateResource(resource, configuration.getname())
config += [("END_CONFIGURATION\n", ())]
return config
# Generate a resource from its model
def GenerateResource(self, resource, config_name):
tagname = ComputeConfigurationResourceName(config_name, resource.getname())
resrce = [("\n RESOURCE ", ()),
(resource.getname(), (tagname, "name")),
(" ON PLC\n", ())]
var_number = 0
# Generate any global variable in configuration
for varlist in resource.getglobalVars():
variable_type = errorVarTypes.get("VAR_GLOBAL", "var_local")
# Generate variable block with modifier
resrce += [(" VAR_GLOBAL", ())]
if varlist.getconstant():
resrce += [(" CONSTANT", (tagname, variable_type, (var_number, var_number + len(varlist.getvariable())), "constant"))]
elif varlist.getretain():
resrce += [(" RETAIN", (tagname, variable_type, (var_number, var_number + len(varlist.getvariable())), "retain"))]
elif varlist.getnonretain():
resrce += [(" NON_RETAIN", (tagname, variable_type, (var_number, var_number + len(varlist.getvariable())), "non_retain"))]
resrce += [("\n", ())]
# Generate any variable of this block
for var in varlist.getvariable():
vartype_content = var.gettype().getcontent()
if vartype_content.getLocalTag() == "derived":
var_type = vartype_content.getname()
self.GenerateDataType(var_type)
else:
var_type = var.gettypeAsText()
resrce += [(" ", ()),
(var.getname(), (tagname, variable_type, var_number, "name")),
(" ", ())]
address = var.getaddress()
# Generate variable address if exists
if address:
resrce += [("AT ", ()),
(address, (tagname, variable_type, var_number, "location")),
(" ", ())]
resrce += [(": ", ()),
(var.gettypeAsText(), (tagname, variable_type, var_number, "type"))]
# Generate variable initial value if exists
initial = var.getinitialValue()
if initial is not None:
resrce += [(" := ", ()),
(self.ComputeValue(initial.getvalue(), var_type), (tagname, variable_type, var_number, "initial value"))]
resrce += [(";\n", ())]
var_number += 1
resrce += [(" END_VAR\n", ())]
# Generate any task in the resource
tasks = resource.gettask()
task_number = 0
for task in tasks:
# Task declaration
resrce += [(" TASK ", ()),
(task.getname(), (tagname, "task", task_number, "name")),
("(", ())]
single = task.getsingle()
# Single argument if exists
if single is not None:
if len(single) == 0:
raise PLCGenException(
_("Source signal has to be defined for single task '{a1}' in resource '{a2}.{a3}'.").
format(a1=task.getname(), a2=config_name, a3=resource.getname()))
if single[0] == '[' and single[-1] == ']':
SNGLKW = "MULTI"
else:
SNGLKW = "SINGLE"
resrce += [(SNGLKW + " := ", ()),
(single, (tagname, "task", task_number, "single")),
(",", ())]
# Interval argument if exists
interval = task.getinterval()
if interval is not None:
resrce += [("INTERVAL := ", ()),
(interval, (tagname, "task", task_number, "interval")),
(",", ())]
# resrce += [("INTERVAL := t#", ())]
# if interval.hour != 0:
# resrce += [("%dh"%interval.hour, (tagname, "task", task_number, "interval", "hour"))]
# if interval.minute != 0:
# resrce += [("%dm"%interval.minute, (tagname, "task", task_number, "interval", "minute"))]
# if interval.second != 0:
# resrce += [("%ds"%interval.second, (tagname, "task", task_number, "interval", "second"))]
# if interval.microsecond != 0:
# resrce += [("%dms"%(interval.microsecond / 1000), (tagname, "task", task_number, "interval", "millisecond"))]
# resrce += [(",", ())]
# Priority argument
resrce += [("PRIORITY := ", ()),
("%d" % task.getpriority(), (tagname, "task", task_number, "priority")),
(");\n", ())]
task_number += 1
instance_number = 0
# Generate any program assign to each task
for task in tasks:
for instance in task.getpouInstance():
resrce += [(" PROGRAM ", ()),
(instance.getname(), (tagname, "instance", instance_number, "name")),
(" WITH ", ()),
(task.getname(), (tagname, "instance", instance_number, "task")),
(" : ", ()),
(instance.gettypeName(), (tagname, "instance", instance_number, "type")),
(";\n", ())]
instance_number += 1
# Generate any program assign to no task
for instance in resource.getpouInstance():
resrce += [(" PROGRAM ", ()),
(instance.getname(), (tagname, "instance", instance_number, "name")),
(" : ", ()),
(instance.gettypeName(), (tagname, "instance", instance_number, "type")),
(";\n", ())]
instance_number += 1
resrce += [(" END_RESOURCE\n", ())]
return resrce
# Generate the entire program for current project
def GenerateProgram(self, log):
log("Collecting data types")
# Find all data types defined
for datatype in self.Project.getdataTypes():
self.DatatypeComputed[datatype.getname()] = False
log("Collecting POUs")
# Find all data types defined
for pou in self.Project.getpous():
self.PouComputed[pou.getname()] = False
# Generate data type declaration structure if there is at least one data
# type defined
if len(self.DatatypeComputed) > 0:
self.Program += [("TYPE\n", ())]
# Generate every data types defined
for datatype_name in self.DatatypeComputed.keys():
log("Generate Data Type %s"%datatype_name)
self.GenerateDataType(datatype_name)
self.Program += [("END_TYPE\n\n", ())]
# Generate every POUs defined
for pou_name in self.PouComputed.keys():
log("Generate POU %s"%pou_name)
self.GeneratePouProgram(pou_name)
# Generate every configurations defined
log("Generate Config(s)")
for config in self.Project.getconfigurations():
self.Program += self.GenerateConfiguration(config)
# Return generated program
def GetGeneratedProgram(self):
return self.Program
# -------------------------------------------------------------------------------
# Generator of POU programs
# -------------------------------------------------------------------------------
[ConnectorClass, ContinuationClass, ActionBlockClass] = [
PLCOpenParser.GetElementClass(instance_name, "commonObjects")
for instance_name in ["connector", "continuation", "actionBlock"]]
[InVariableClass, InOutVariableClass, OutVariableClass, BlockClass] = [
PLCOpenParser.GetElementClass(instance_name, "fbdObjects")
for instance_name in ["inVariable", "inOutVariable", "outVariable", "block"]]
[ContactClass, CoilClass, LeftPowerRailClass, RightPowerRailClass] = [
PLCOpenParser.GetElementClass(instance_name, "ldObjects")
for instance_name in ["contact", "coil", "leftPowerRail", "rightPowerRail"]]
[StepClass, TransitionClass, JumpStepClass,
SelectionConvergenceClass, SelectionDivergenceClass,
SimultaneousConvergenceClass, SimultaneousDivergenceClass] = [
PLCOpenParser.GetElementClass(instance_name, "sfcObjects")
for instance_name in ["step",
"transition",
"jumpStep",
"selectionConvergence",
"selectionDivergence",
"simultaneousConvergence",
"simultaneousDivergence"]]
TransitionObjClass = PLCOpenParser.GetElementClass("transition", "transitions")
ActionObjClass = PLCOpenParser.GetElementClass("action", "actions")
class PouProgramGenerator(object):
# Create a new POU program generator
def __init__(self, parent, name, type, errors, warnings):
# Keep Reference to the parent generator
self.ParentGenerator = parent
self.Name = name
self.Type = type
self.TagName = ComputePouName(name)
self.CurrentIndent = " "
self.ReturnType = None
self.Interface = []
self.InitialSteps = []
self.ComputedBlocks = {}
self.ComputedConnectors = {}
self.ConnectionTypes = {}
self.RelatedConnections = []
self.SFCNetworks = {"Steps": {}, "Transitions": {}, "Actions": {}}
self.SFCComputedBlocks = []
self.ActionNumber = 0
self.Program = []
self.Errors = errors
self.Warnings = warnings
def GetBlockType(self, type, inputs=None):
return self.ParentGenerator.Controler.GetBlockType(type, inputs)
def IndentLeft(self):
if len(self.CurrentIndent) >= 2:
self.CurrentIndent = self.CurrentIndent[:-2]
def IndentRight(self):
self.CurrentIndent += " "
# Generator of unique ID for inline actions
def GetActionNumber(self):
self.ActionNumber += 1
return self.ActionNumber
# Test if a variable has already been defined
def IsAlreadyDefined(self, name):
for _list_type, _option, _located, vars in self.Interface:
for _var_type, var_name, _var_address, _var_initial in vars:
if name == var_name:
return True
return False
# Return the type of a variable defined in interface
def GetVariableType(self, name):
parts = name.split('.')
current_type = None
if len(parts) > 0:
name = parts.pop(0)
for _list_type, _option, _located, vars in self.Interface:
for var_type, var_name, _var_address, _var_initial in vars:
if name == var_name:
current_type = var_type
break
while current_type is not None and len(parts) > 0:
blocktype = self.ParentGenerator.Controler.GetBlockType(current_type)
if blocktype is not None:
name = parts.pop(0)
current_type = None
for var_name, var_type, _var_modifier in blocktype["inputs"] + blocktype["outputs"]:
if var_name == name:
current_type = var_type
break
else:
tagname = ComputeDataTypeName(current_type)
infos = self.ParentGenerator.Controler.GetDataTypeInfos(tagname)
if infos is not None and infos["type"] == "Structure":
name = parts.pop(0)
current_type = None
for element in infos["elements"]:
if element["Name"] == name:
current_type = element["Type"]
break
return current_type
# Return connectors linked by a connection to the given connector
def GetConnectedConnector(self, connector, body):
links = connector.getconnections()
if links is not None and len(links) == 1:
return self.GetLinkedConnector(links[0], body)
return None
def GetLinkedConnector(self, link, body):
parameter = link.getformalParameter()
instance = body.getcontentInstance(link.getrefLocalId())
if isinstance(instance, (InVariableClass, InOutVariableClass,
ContinuationClass, ContactClass, CoilClass)):
return instance.connectionPointOut
elif isinstance(instance, BlockClass):
outputvariables = instance.outputVariables.getvariable()
if len(outputvariables) == 1:
return outputvariables[0].connectionPointOut
elif parameter:
for variable in outputvariables:
if variable.getformalParameter() == parameter:
return variable.connectionPointOut
else:
point = link.getposition()[-1]
for variable in outputvariables:
relposition = variable.connectionPointOut.getrelPositionXY()
blockposition = instance.getposition()
if point.x == blockposition.x + relposition[0] and point.y == blockposition.y + relposition[1]:
return variable.connectionPointOut
elif isinstance(instance, LeftPowerRailClass):
outputconnections = instance.getconnectionPointOut()
if len(outputconnections) == 1:
return outputconnections[0]
else:
point = link.getposition()[-1]
for outputconnection in outputconnections:
relposition = outputconnection.getrelPositionXY()
powerrailposition = instance.getposition()
if point.x == powerrailposition.x + relposition[0] and point.y == powerrailposition.y + relposition[1]:
return outputconnection
return None
def ExtractRelatedConnections(self, connection):
for i, related in enumerate(self.RelatedConnections):
if connection in related:
return self.RelatedConnections.pop(i)
return [connection]
def ComputeInterface(self, pou):
interface = pou.getinterface()
if interface is not None:
if self.Type == "FUNCTION":
returntype_content = interface.getreturnType()[0]
returntype_content_type = returntype_content.getLocalTag()
if returntype_content_type == "derived":
self.ReturnType = returntype_content.getname()
else:
self.ReturnType = returntype_content_type.upper()
for varlist in interface.getcontent():
variables = []
located = []
varlist_type = varlist.getLocalTag()
for var in varlist.getvariable():
vartype_content = var.gettype().getcontent()
if vartype_content.getLocalTag() == "derived":
var_type = vartype_content.getname()
blocktype = self.GetBlockType(var_type)
if blocktype is not None:
self.ParentGenerator.GeneratePouProgram(var_type)
variables.append((var_type, var.getname(), None, None))
else:
self.ParentGenerator.GenerateDataType(var_type)
initial = var.getinitialValue()
if initial is not None:
initial_value = initial.getvalue()
else:
initial_value = None
address = var.getaddress()
if address is not None:
located.append((vartype_content.getname(), var.getname(), address, initial_value))
else:
variables.append((vartype_content.getname(), var.getname(), None, initial_value))
else:
var_type = var.gettypeAsText()
initial = var.getinitialValue()
if initial is not None:
initial_value = initial.getvalue()
else:
initial_value = None
address = var.getaddress()
if address is not None:
located.append((var_type, var.getname(), address, initial_value))
else:
variables.append((var_type, var.getname(), None, initial_value))
if varlist.getconstant():
option = "CONSTANT"
elif varlist.getretain():
option = "RETAIN"
elif varlist.getnonretain():
option = "NON_RETAIN"
else:
option = None
if len(variables) > 0:
self.Interface.append((varTypeNames[varlist_type], option, False, variables))
if len(located) > 0:
self.Interface.append((varTypeNames[varlist_type], option, True, located))
LITERAL_TYPES = {
"T": "TIME",
"D": "DATE",
"TOD": "TIME_OF_DAY",
"DT": "DATE_AND_TIME",
"2": None,
"8": None,
"16": None,
}
def ComputeConnectionTypes(self, pou):
body = pou.getbody()
if isinstance(body, list):
body = body[0]
body_content = body.getcontent()
body_type = body_content.getLocalTag()
if body_type in ["FBD", "LD", "SFC"]:
undefined_blocks = []
for instance in body.getcontentInstances():
if isinstance(instance, (InVariableClass, OutVariableClass,
InOutVariableClass)):
expression = instance.getexpression()
var_type = self.GetVariableType(expression)
if isinstance(pou, TransitionObjClass) and expression == pou.getname():
var_type = "BOOL"
elif (not isinstance(pou, (TransitionObjClass, ActionObjClass)) and
pou.getpouType() == "function" and expression == pou.getname()):
returntype_content = pou.interface.getreturnType().getcontent()
returntype_content_type = returntype_content.getLocalTag()
if returntype_content_type == "derived":
var_type = returntype_content.getname()
else:
var_type = returntype_content_type.upper()
elif var_type is None:
parts = expression.split("#")
if len(parts) > 1:
literal_prefix = parts[0].upper()
var_type = self.LITERAL_TYPES.get(literal_prefix,
literal_prefix)
elif expression.startswith("'"):
var_type = "STRING"
elif expression.startswith('"'):
var_type = "WSTRING"
if var_type is not None:
if isinstance(instance, (InVariableClass, InOutVariableClass)):
for connection in self.ExtractRelatedConnections(instance.connectionPointOut):
self.ConnectionTypes[connection] = var_type
if isinstance(instance, (OutVariableClass, InOutVariableClass)):
self.ConnectionTypes[instance.connectionPointIn] = var_type
connected = self.GetConnectedConnector(instance.connectionPointIn, body)
if connected is not None and connected not in self.ConnectionTypes:
for related in self.ExtractRelatedConnections(connected):
self.ConnectionTypes[related] = var_type
elif isinstance(instance, (ContactClass, CoilClass)):
for connection in self.ExtractRelatedConnections(instance.connectionPointOut):
self.ConnectionTypes[connection] = "BOOL"
self.ConnectionTypes[instance.connectionPointIn] = "BOOL"
for link in instance.connectionPointIn.getconnections():
connected = self.GetLinkedConnector(link, body)
if connected is not None and connected not in self.ConnectionTypes:
for related in self.ExtractRelatedConnections(connected):
self.ConnectionTypes[related] = "BOOL"
elif isinstance(instance, LeftPowerRailClass):
for connection in instance.getconnectionPointOut():
for related in self.ExtractRelatedConnections(connection):
self.ConnectionTypes[related] = "BOOL"
elif isinstance(instance, RightPowerRailClass):
for connection in instance.getconnectionPointIn():
self.ConnectionTypes[connection] = "BOOL"
for link in connection.getconnections():
connected = self.GetLinkedConnector(link, body)
if connected is not None and connected not in self.ConnectionTypes:
for related in self.ExtractRelatedConnections(connected):
self.ConnectionTypes[related] = "BOOL"
elif isinstance(instance, TransitionClass):
content = instance.getconditionContent()
if content["type"] == "connection":
self.ConnectionTypes[content["value"]] = "BOOL"
connections = content["value"].getconnections()
if not connections:
raise PLCGenException(
_("SFC transition in POU \"%s\" must be connected.") % self.Name)
for link in connections:
connected = self.GetLinkedConnector(link, body)
if connected is not None and connected not in self.ConnectionTypes:
for related in self.ExtractRelatedConnections(connected):
self.ConnectionTypes[related] = "BOOL"
elif isinstance(instance, ContinuationClass):
name = instance.getname()
connector = None
var_type = "ANY"
for element in body.getcontentInstances():
if isinstance(element, ConnectorClass) and element.getname() == name:
if connector is not None:
raise PLCGenException(
_("More than one connector found corresponding to \"{a1}\" continuation in \"{a2}\" POU").
format(a1=name, a2=self.Name))
connector = element
if connector is not None:
undefined = [instance.connectionPointOut, connector.connectionPointIn]
connected = self.GetConnectedConnector(connector.connectionPointIn, body)
if connected is not None:
undefined.append(connected)
related = []
for connection in undefined:
if connection in self.ConnectionTypes:
var_type = self.ConnectionTypes[connection]
else:
related.extend(self.ExtractRelatedConnections(connection))
if var_type.startswith("ANY") and len(related) > 0:
self.RelatedConnections.append(related)
else:
for connection in related:
self.ConnectionTypes[connection] = var_type
else:
raise PLCGenException(
_("No connector found corresponding to \"{a1}\" continuation in \"{a2}\" POU").
format(a1=name, a2=self.Name))
elif isinstance(instance, BlockClass):
block_infos = self.GetBlockType(instance.gettypeName(), "undefined")
if block_infos is not None:
self.ComputeBlockInputTypes(instance, block_infos, body)
else:
for variable in instance.inputVariables.getvariable():
connected = self.GetConnectedConnector(variable.connectionPointIn, body)
if connected is not None:
var_type = self.ConnectionTypes.get(connected, None)
if var_type is not None:
self.ConnectionTypes[variable.connectionPointIn] = var_type
else:
related = self.ExtractRelatedConnections(connected)
related.append(variable.connectionPointIn)
self.RelatedConnections.append(related)
undefined_blocks.append(instance)
for instance in undefined_blocks:
block_infos = self.GetBlockType(instance.gettypeName(), tuple([self.ConnectionTypes.get(variable.connectionPointIn, "ANY") for variable in instance.inputVariables.getvariable() if variable.getformalParameter() != "EN"]))
if block_infos is not None:
self.ComputeBlockInputTypes(instance, block_infos, body)
else:
raise PLCGenException(
_("No informations found for \"%s\" block") % (instance.gettypeName()))
if body_type == "SFC":
previous_tagname = self.TagName
for action in pou.getactionList():
self.TagName = ComputePouActionName(self.Name, action.getname())
self.ComputeConnectionTypes(action)
for transition in pou.gettransitionList():
self.TagName = ComputePouTransitionName(self.Name, transition.getname())
self.ComputeConnectionTypes(transition)
self.TagName = previous_tagname
def ComputeBlockInputTypes(self, instance, block_infos, body):
undefined = {}
for variable in instance.outputVariables.getvariable():
output_name = variable.getformalParameter()
if output_name == "ENO":
for connection in self.ExtractRelatedConnections(variable.connectionPointOut):
self.ConnectionTypes[connection] = "BOOL"
else:
for oname, otype, _oqualifier in block_infos["outputs"]:
if output_name == oname:
if otype.startswith("ANY"):
if otype not in undefined:
undefined[otype] = []
undefined[otype].append(variable.connectionPointOut)
elif variable.connectionPointOut not in self.ConnectionTypes:
for connection in self.ExtractRelatedConnections(variable.connectionPointOut):
self.ConnectionTypes[connection] = otype
for variable in instance.inputVariables.getvariable():
input_name = variable.getformalParameter()
if input_name == "EN":
for connection in self.ExtractRelatedConnections(variable.connectionPointIn):
self.ConnectionTypes[connection] = "BOOL"
else:
for iname, itype, _iqualifier in block_infos["inputs"]:
if input_name == iname:
connected = self.GetConnectedConnector(variable.connectionPointIn, body)
if itype.startswith("ANY"):
if itype not in undefined:
undefined[itype] = []
undefined[itype].append(variable.connectionPointIn)
if connected is not None:
undefined[itype].append(connected)
else:
self.ConnectionTypes[variable.connectionPointIn] = itype
if connected is not None and connected not in self.ConnectionTypes:
for connection in self.ExtractRelatedConnections(connected):
self.ConnectionTypes[connection] = itype
for var_type, connections in undefined.items():
related = []
for connection in connections:
connection_type = self.ConnectionTypes.get(connection)
if connection_type and not connection_type.startswith("ANY"):
var_type = connection_type
else:
related.extend(self.ExtractRelatedConnections(connection))
if var_type.startswith("ANY") and len(related) > 0:
self.RelatedConnections.append(related)
else:
for connection in related:
self.ConnectionTypes[connection] = var_type
def GetUsedEno(self, body, connections):
"""
Function checks whether value on given connection
comes from block, that has used EN input and
returns variable name for ENO output.
This is needed to avoid value propagation from blocks
with false signal on EN input.
:param body:
body of the block for that program is currently generated
:param connections:
connection, that's source is checked for EN/ENO usage
:return:
if EN/ENO are not used, then None is returned
Otherwise BOOL variable corresponding to ENO
output is returned.
"""
if len(connections) != 1:
return None
ref_local_id = connections[0].getrefLocalId()
blk = body.getcontentInstance(ref_local_id)
if blk is None:
return None
if not hasattr(blk, "inputVariables"):
return None
for invar in blk.inputVariables.getvariable():
if invar.getformalParameter() == "EN":
if len(invar.getconnectionPointIn().getconnections()) > 0:
if blk.getinstanceName() is None:
var_name = "_TMP_%s%d_ENO" % (blk.gettypeName(), blk.getlocalId())
else:
var_name = "%s.ENO" % blk.getinstanceName()
return var_name
return None
def ComputeProgram(self, pou):
body = pou.getbody()
if isinstance(body, list):
body = body[0]
body_content = body.getcontent()
body_type = body_content.getLocalTag()
if body_type in ["IL", "ST"]:
text = body_content.getanyText()
self.ParentGenerator.GeneratePouProgramInText(text.upper())
self.Program = [(ReIndentText(text, len(self.CurrentIndent)),
(self.TagName, "body", len(self.CurrentIndent)))]
elif body_type == "SFC":
self.IndentRight()
for instance in body.getcontentInstances():
if isinstance(instance, StepClass):
self.GenerateSFCStep(instance, pou)
elif isinstance(instance, ActionBlockClass):
self.GenerateSFCStepActions(instance, pou)
elif isinstance(instance, TransitionClass):
self.GenerateSFCTransition(instance, pou)
elif isinstance(instance, JumpStepClass):
self.GenerateSFCJump(instance, pou)
if len(self.InitialSteps) > 0 and len(self.SFCComputedBlocks) > 0:
action_name = "COMPUTE_FUNCTION_BLOCKS"
action_infos = {"qualifier": "S", "content": action_name}
self.SFCNetworks["Steps"][self.InitialSteps[0]]["actions"].append(action_infos)
self.SFCNetworks["Actions"][action_name] = (self.SFCComputedBlocks, ())
self.Program = []
self.IndentLeft()
for initialstep in self.InitialSteps:
self.ComputeSFCStep(initialstep)
else:
otherInstances = {"outVariables&coils": [], "blocks": [], "connectors": []}
orderedInstances = []
for instance in body.getcontentInstances():
if isinstance(instance, (OutVariableClass, InOutVariableClass, BlockClass)):
executionOrderId = instance.getexecutionOrderId()
if executionOrderId > 0:
orderedInstances.append((executionOrderId, instance))
elif isinstance(instance, (OutVariableClass, InOutVariableClass)):
otherInstances["outVariables&coils"].append(instance)
elif isinstance(instance, BlockClass):
otherInstances["blocks"].append(instance)
elif isinstance(instance, ConnectorClass):
otherInstances["connectors"].append(instance)
elif isinstance(instance, CoilClass):
otherInstances["outVariables&coils"].append(instance)
orderedInstances.sort()
otherInstances["outVariables&coils"].sort(SortInstances)
otherInstances["blocks"].sort(SortInstances)
instances = [instance for (executionOrderId, instance) in orderedInstances]
instances.extend(otherInstances["outVariables&coils"] + otherInstances["blocks"] + otherInstances["connectors"])