asyncua.common.xmlparser.XMLParser._parse_attr() - Code Metrics - Inspection of "[WIP]: Remove lxml and replace with buildin xml" - FreeOpcUa/opcua-asyncio - Measure and Improve Code Quality continuously with Scrutinizer

Test Failed

Pull Request — master (#331)

unknown

created 2020-11-19 15:47 UTC

asyncua.common.xmlparser.XMLParser._parse_attr() C

↳ Parent: asyncua.common.xmlparser

Complexity

Conditions

Size

Total Lines	21
Code Lines	19

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	9
eloc	19
nop	3
dl	0
loc	21
rs	6.6666
c	0
b	0
f	0

"""
parse xml file from asyncua-spec
"""
import re
import asyncio
import base64
import logging
from pytz import utc


import xml.etree.ElementTree as ET

from .ua_utils import string_to_val
from asyncua import ua


def ua_type_to_python(val, uatype_as_str):
    """
    Converts a string value to a python value according to ua_utils.
    """
    return string_to_val(val, getattr(ua.VariantType, uatype_as_str))


def _to_bool(val):
    """
    Easy access to boolean conversion.
    """
    return ua_type_to_python(val, "Boolean")


class NodeData:

    def __init__(self):
        self.nodetype = None
        self.parent = None
        self.parentlink = None
        self.typedef = None
        self.nodeclass = None
        self.eventnotifier = 0

        # UANode - Part6 Table F.2
        self.nodeid = None
        self.browsename = None
        self.symname = None
        self.writemask = None
        self.userwritemask = None
        self.accessrestrictions = None
        self.displayname = None
        self.desc = ""
        self.category = []
        self.documentation = None
        self.refs = []
        self.rolepermissions = []
        self.extensions = None

        # variable
        self.datatype = None
        self.rank = -1  # check default value
        self.value = None
        self.valuetype = None
        self.dimensions = None
        self.accesslevel = None
        self.useraccesslevel = None
        self.minsample = None

        # referencetype
        self.inversename = ""
        self.abstract = False
        self.symmetric = False

        # datatype
        self.definitions = []

    def __str__(self):
        return f"NodeData(nodeid:{self.nodeid})"

    __repr__ = __str__

class Field:
    def __init__(self, data):
        self.datatype = data.get("DataType", "")
        self.name = data.get("Name")
        self.dname = data.get("DisplayName", "")
        self.optional = bool(data.get("IsOptional", False))
        self.valuerank = int(data.get("ValueRank", -1))
        self.arraydim = data.get("ArrayDimensions", None) #FIXME: check type
        self.value = int(data.get("Value", 0))
        self.desc = data.get("Description", "")

class RefStruct:

    def __init__(self):
        self.reftype = None
        self.forward = True
        self.target = None

    def __str__(self):
        return f"RefStruct({self.reftype, self.forward, self.target})"
    __repr__ = __str__


class ExtObj:

    def __init__(self):
        self.typeid = None
        self.objname = None
        self.bodytype = None
        self.body = {}

    def __str__(self):
        return f"ExtObj({self.objname}, {self.body})"

    __repr__ = __str__


class XMLParser:

    def __init__(self):
        self.logger = logging.getLogger(__name__)
        self._retag = re.compile(r"({.*})(.*)")
        self.root = None
        self.ns = {
            'base': "http://opcfoundation.org/UA/2011/03/UANodeSet.xsd",
            'uax': "http://opcfoundation.org/UA/2008/02/Types.xsd",
            'xsd': "http://www.w3.org/2001/XMLSchema",
            'xsi': "http://www.w3.org/2001/XMLSchema-instance"
        }

    async def parse(self, xmlpath=None, xmlstring=None):
        if xmlstring:
            self.root = ET.fromstring(xmlstring)
        else:
            tree = await asyncio.get_event_loop().run_in_executor(None, ET.parse, xmlpath)
            self.root = tree.getroot()

    def parse_sync(self, xmlpath=None, xmlstring=None):
        if xmlstring:
            self.root = ET.fromstring(xmlstring)
        else:
            tree = ET.parse(xmlpath)
            self.root = tree.getroot()

    def get_used_namespaces(self):
        """
        Return the used namespace uris in this import file
        """
        namespaces_uris = []
        for child in self.root:
            tag = self._retag.match(child.tag).groups()[1]
            if tag == 'NamespaceUris':
                namespaces_uris = [ns_element.text for ns_element in child]
                break
        return namespaces_uris

    def get_aliases(self) -> dict:
        """
        Return the used node aliases in this import file
        """
        aliases = {}
        for child in self.root:
            tag = self._retag.match(child.tag).groups()[1]
            if tag == 'Aliases':
                for el in child:
                    aliases[el.attrib["Alias"]] = el.text
                break
        return aliases

    def get_node_datas(self):
        nodes = []
        for child in self.root:
            tag = self._retag.match(child.tag).groups()[1]
            if tag not in ["Aliases", "NamespaceUris", "Extensions", "Models"]:  # these XML tags don't contain nodes
                node = self._parse_node(tag, child)
                nodes.append(node)
        return nodes

    def _parse_node(self, nodetype, child):
        """
        Parse a XML node and create a NodeData object.
        """
        obj = NodeData()
        obj.nodetype = nodetype
        for key, val in child.attrib.items():
            self._set_attr(key, val, obj)
        self.logger.debug("Parsing node: %s %s", obj.nodeid, obj.browsename)
        obj.displayname = obj.browsename  # give a default value to display name
        for el in child:
            self._parse_attr(el, obj)
        return obj

    def _set_attr(self, key, val, obj):
        if key == "NodeId":
            obj.nodeid = val
        elif key == "BrowseName":
            obj.browsename = val
        elif key == "SymbolicName":
            obj.symname = val
        elif key == "ParentNodeId":
            obj.parent = val
        elif key == "DataType":
            obj.datatype = val
        elif key == "IsAbstract":
            obj.abstract = _to_bool(val)
        elif key == "Executable":
            obj.executable = _to_bool(val)
        elif key == "EventNotifier":
            obj.eventnotifier = int(val)
        elif key == "ValueRank":
            obj.rank = int(val)
        elif key == "ArrayDimensions":
            obj.dimensions = [int(i) for i in val.split(",")]
        elif key == "MinimumSamplingInterval":
            obj.minsample = int(val)
        elif key == "AccessLevel":
            obj.accesslevel = int(val)
        elif key == "UserAccessLevel":
            obj.useraccesslevel = int(val)
        elif key == "Symmetric":
            obj.symmetric = _to_bool(val)
        else:
            self.logger.info("Attribute not implemented: %s:%s", key, val)

    def _parse_attr(self, el, obj):
        tag = self._retag.match(el.tag).groups()[1]

        if tag == "DisplayName":
            obj.displayname = el.text
        elif tag == "Description":
            obj.desc = el.text
        elif tag == "Documentation":
            obj.documentation = el.text
        elif tag == "References":
            self._parse_refs(el, obj)
        elif tag == "Value":
            self._parse_contained_value(el, obj)
        elif tag == "InverseName":
            obj.inversename = el.text
        elif tag == "Definition":
            for field in el:
                field = self._parse_field(field)
                obj.definitions.append(field)
        else:
            self.logger.info("Not implemented tag: %s", el)

    def _parse_field(self, field):
        return Field(field)

    def _parse_contained_value(self, el, obj):
        """
        Parse the child of el as a constant.
        """
        val_el = el.find(".//")  # should be only one child
        self._parse_value(val_el, obj)

    def _parse_value(self, val_el, obj):
        """
        Parse the node val_el as a constant.
        """
        if val_el is not None and val_el.text is not None:
            ntag = self._retag.match(val_el.tag).groups()[1]
        else:
            ntag = "Null"

        obj.valuetype = ntag
        if ntag == "Null":
            obj.value = None
        elif hasattr(ua.ua_binary.Primitives1, ntag):
            # Elementary types have their parsing directly relying on ua_type_to_python.
            obj.value = ua_type_to_python(val_el.text, ntag)
        elif ntag == "DateTime":
            obj.value = ua_type_to_python(val_el.text, ntag)
            # According to specs, DateTime should be either UTC or with a timezone.
            if obj.value.tzinfo is None or obj.value.tzinfo.utcoffset(obj.value) is None:
                utc.localize(obj.value)  # FIXME Forcing to UTC if unaware, maybe should raise?
        elif ntag == "ByteString":
            if val_el.text is None:
                mytext = b""
            else:
                mytext = val_el.text.encode()
                mytext = base64.b64decode(mytext)
            obj.value = mytext
        elif ntag == "String":
            mytext = val_el.text
            if mytext is None:
                # Support importing null strings.
                mytext = ""
            # mytext = mytext.replace('\n', '').replace('\r', '')
            obj.value = mytext
        elif ntag == "Guid":
            self._parse_contained_value(val_el, obj)
            # Override parsed string type to guid.
            obj.valuetype = ntag
        elif ntag == "NodeId":
            id_el = val_el.find("uax:Identifier", self.ns)
            if id_el is not None:
                obj.value = id_el.text
        elif ntag == "ExtensionObject":
            obj.value = self._parse_ext_obj(val_el)
        elif ntag == "LocalizedText":
            obj.value = self._parse_body(val_el)
        elif ntag == "ListOfLocalizedText":
            obj.value = self._parse_list_of_localized_text(val_el)
        elif ntag == "ListOfExtensionObject":
            obj.value = self._parse_list_of_extension_object(val_el)
        elif ntag.startswith("ListOf"):
            # Default case for "ListOf" types.
            # Should stay after particular cases (e.g.: "ListOfLocalizedText").
            obj.value = []
            for val_el in val_el:
                tmp = NodeData()
                self._parse_value(val_el, tmp)
                obj.value.append(tmp.value)
        else:
            # Missing according to string_to_val: XmlElement, ExpandedNodeId,
            # QualifiedName, StatusCode.
            # Missing according to ua.VariantType (also missing in string_to_val):
            # DataValue, Variant, DiagnosticInfo.
            self.logger.warning("Parsing value of type '%s' not implemented", ntag)

    def _get_text(self, el):
        txtlist = [txt.strip() for txt in el.itertext()]
        return "".join(txtlist)

    def _parse_list_of_localized_text(self, el):
        value = []
        for localized_text in el:
            mylist = self._parse_body(localized_text)
            # each localized text is in a dictionary with "Locale" and "Text" keys
            item = {"Text": None, "Locale": None}
            for name, val in mylist:
                item.update({str(name): val})
            # value is an array of dictionaries with localized texts
            value.append(item)
        return value

    def _parse_list_of_extension_object(self, el):
        """
        Parse a uax:ListOfExtensionObject Value
        Return an list of ExtObj
        """
        value = []
        for extension_object in el:
            ext_obj = self._parse_ext_obj(extension_object)
            value.append(ext_obj)
        return value

    def _parse_ext_obj(self, el):
        ext = ExtObj()
        for extension_object_part in el:
            ntag = self._retag.match(extension_object_part.tag).groups()[1]
            if ntag == 'TypeId':
                ntag = self._retag.match(extension_object_part.find('*').tag).groups()[1]
                ext.typeid = self._get_text(extension_object_part)
            elif ntag == 'Body':
                ext.objname = self._retag.match(extension_object_part.find('*').tag).groups()[1]
                ext.body = self._parse_body(extension_object_part)
            else:
                self.logger.warning("Unknown ntag", ntag)
        return ext

    def _parse_body(self, el):
        body = []
        for body_item in el:
            otag = self._retag.match(body_item.tag).groups()[1]
            childs = [i for i in body_item]
            if not childs:
                val = self._get_text(body_item)
            else:
                val = self._parse_body(body_item)
            if val:
                body.append((otag, val))
        return body

    def _parse_refs(self, el, obj):
        parent, parentlink = obj.parent, None

        for ref in el:
            struct = RefStruct()
            struct.forward = "IsForward" not in ref.attrib or ref.attrib["IsForward"] not in ("false", "False")
            struct.target = ref.text
            struct.reftype = ref.attrib["ReferenceType"]
            obj.refs.append(struct)

            if ref.attrib["ReferenceType"] == "HasTypeDefinition":
                obj.typedef = ref.text
            elif not struct.forward:
                parent, parentlink = struct.target, struct.reftype
                if obj.parent == parent or obj.parent != parent and not obj.parentlink:
                    obj.parentlink = parentlink

        if obj.parent and not obj.parentlink:
            # the case of asimple parent attribute without any reverse link
            obj.parentlink = "HasComponent"
        if not obj.parent:
            obj.parent, obj.parentlink = parent, parentlink
        if not obj.parent:
            self.logger.info("Could not find parent for node '%s'", obj.nodeid)


1			"""
2			parse xml file from asyncua-spec
3			"""
4			import re
5			import asyncio
6			import base64
7			import logging
8			from pytz import utc
9
10
11			import xml.etree.ElementTree as ET
12
13			from .ua_utils import string_to_val
14			from asyncua import ua
15
16
17			def ua_type_to_python(val, uatype_as_str):
18			"""
19			Converts a string value to a python value according to ua_utils.
20			"""
21			return string_to_val(val, getattr(ua.VariantType, uatype_as_str))
22
23
24			def _to_bool(val):
25			"""
26			Easy access to boolean conversion.
27			"""
28			return ua_type_to_python(val, "Boolean")
29
30
31			class NodeData:
32
33			def __init__(self):
34			self.nodetype = None
35			self.parent = None
36			self.parentlink = None
37			self.typedef = None
38			self.nodeclass = None
39			self.eventnotifier = 0
40
41			# UANode - Part6 Table F.2
42			self.nodeid = None
43			self.browsename = None
44			self.symname = None
45			self.writemask = None
46			self.userwritemask = None
47			self.accessrestrictions = None
48			self.displayname = None
49			self.desc = ""
50			self.category = []
51			self.documentation = None
52			self.refs = []
53			self.rolepermissions = []
54			self.extensions = None
55
56			# variable
57			self.datatype = None
58			self.rank = -1 # check default value
59			self.value = None
60			self.valuetype = None
61			self.dimensions = None
62			self.accesslevel = None
63			self.useraccesslevel = None
64			self.minsample = None
65
66			# referencetype
67			self.inversename = ""
68			self.abstract = False
69			self.symmetric = False
70
71			# datatype
72			self.definitions = []
73
74			def __str__(self):
75			return f"NodeData(nodeid:{self.nodeid})"
76
77			__repr__ = __str__
78
79			class Field:
80			def __init__(self, data):
81			self.datatype = data.get("DataType", "")
82			self.name = data.get("Name")
83			self.dname = data.get("DisplayName", "")
84			self.optional = bool(data.get("IsOptional", False))
85			self.valuerank = int(data.get("ValueRank", -1))
86			self.arraydim = data.get("ArrayDimensions", None) #FIXME: check type
87			self.value = int(data.get("Value", 0))
88			self.desc = data.get("Description", "")
89
90			class RefStruct:
91
92			def __init__(self):
93			self.reftype = None
94			self.forward = True
95			self.target = None
96
97			def __str__(self):
98			return f"RefStruct({self.reftype, self.forward, self.target})"
99			__repr__ = __str__
100
101
102			class ExtObj:
103
104			def __init__(self):
105			self.typeid = None
106			self.objname = None
107			self.bodytype = None
108			self.body = {}
109
110			def __str__(self):
111			return f"ExtObj({self.objname}, {self.body})"
112
113			__repr__ = __str__
114
115
116			class XMLParser:
117
118			def __init__(self):
119			self.logger = logging.getLogger(__name__)
120			self._retag = re.compile(r"({.})(.)")
121			self.root = None
122			self.ns = {
123			'base': "http://opcfoundation.org/UA/2011/03/UANodeSet.xsd",
124			'uax': "http://opcfoundation.org/UA/2008/02/Types.xsd",
125			'xsd': "http://www.w3.org/2001/XMLSchema",
126			'xsi': "http://www.w3.org/2001/XMLSchema-instance"
127			}
128
129			async def parse(self, xmlpath=None, xmlstring=None):
130			if xmlstring:
131			self.root = ET.fromstring(xmlstring)
132			else:
133			tree = await asyncio.get_event_loop().run_in_executor(None, ET.parse, xmlpath)
134			self.root = tree.getroot()
135
136			def parse_sync(self, xmlpath=None, xmlstring=None):
137			if xmlstring:
138			self.root = ET.fromstring(xmlstring)
139			else:
140			tree = ET.parse(xmlpath)
141			self.root = tree.getroot()
142
143			def get_used_namespaces(self):
144			"""
145			Return the used namespace uris in this import file
146			"""
147			namespaces_uris = []
148			for child in self.root:
149			tag = self._retag.match(child.tag).groups()[1]
150			if tag == 'NamespaceUris':
151			namespaces_uris = [ns_element.text for ns_element in child]
152			break
153			return namespaces_uris
154
155			def get_aliases(self) -> dict:
156			"""
157			Return the used node aliases in this import file
158			"""
159			aliases = {}
160			for child in self.root:
161			tag = self._retag.match(child.tag).groups()[1]
162			if tag == 'Aliases':
163			for el in child:
164			aliases[el.attrib["Alias"]] = el.text
165			break
166			return aliases
167
168			def get_node_datas(self):
169			nodes = []
170			for child in self.root:
171			tag = self._retag.match(child.tag).groups()[1]
172			if tag not in ["Aliases", "NamespaceUris", "Extensions", "Models"]: # these XML tags don't contain nodes
173			node = self._parse_node(tag, child)
174			nodes.append(node)
175			return nodes
176
177			def _parse_node(self, nodetype, child):
178			"""
179			Parse a XML node and create a NodeData object.
180			"""
181			obj = NodeData()
182			obj.nodetype = nodetype
183			for key, val in child.attrib.items():
184			self._set_attr(key, val, obj)
185			self.logger.debug("Parsing node: %s %s", obj.nodeid, obj.browsename)
186			obj.displayname = obj.browsename # give a default value to display name
187			for el in child:
188			self._parse_attr(el, obj)
189			return obj
190
191			def _set_attr(self, key, val, obj):
192			if key == "NodeId":
193			obj.nodeid = val
194			elif key == "BrowseName":
195			obj.browsename = val
196			elif key == "SymbolicName":
197			obj.symname = val
198			elif key == "ParentNodeId":
199			obj.parent = val
200			elif key == "DataType":
201			obj.datatype = val
202			elif key == "IsAbstract":
203			obj.abstract = _to_bool(val)
204			elif key == "Executable":
205			obj.executable = _to_bool(val)
206			elif key == "EventNotifier":
207			obj.eventnotifier = int(val)
208			elif key == "ValueRank":
209			obj.rank = int(val)
210			elif key == "ArrayDimensions":
211			obj.dimensions = [int(i) for i in val.split(",")]
212			elif key == "MinimumSamplingInterval":
213			obj.minsample = int(val)
214			elif key == "AccessLevel":
215			obj.accesslevel = int(val)
216			elif key == "UserAccessLevel":
217			obj.useraccesslevel = int(val)
218			elif key == "Symmetric":
219			obj.symmetric = _to_bool(val)
220			else:
221			self.logger.info("Attribute not implemented: %s:%s", key, val)
222
223			def _parse_attr(self, el, obj):
224			tag = self._retag.match(el.tag).groups()[1]
225
226			if tag == "DisplayName":
227			obj.displayname = el.text
228			elif tag == "Description":
229			obj.desc = el.text
230			elif tag == "Documentation":
231			obj.documentation = el.text
232			elif tag == "References":
233			self._parse_refs(el, obj)
234			elif tag == "Value":
235			self._parse_contained_value(el, obj)
236			elif tag == "InverseName":
237			obj.inversename = el.text
238			elif tag == "Definition":
239			for field in el:
240			field = self._parse_field(field)
241			obj.definitions.append(field)
242			else:
243			self.logger.info("Not implemented tag: %s", el)
244
245			def _parse_field(self, field):
246			return Field(field)
247
248			def _parse_contained_value(self, el, obj):
249			"""
250			Parse the child of el as a constant.
251			"""
252			val_el = el.find(".//") # should be only one child
253			self._parse_value(val_el, obj)
254
255			def _parse_value(self, val_el, obj):
256			"""
257			Parse the node val_el as a constant.
258			"""
259			if val_el is not None and val_el.text is not None:
260			ntag = self._retag.match(val_el.tag).groups()[1]
261			else:
262			ntag = "Null"
263
264			obj.valuetype = ntag
265			if ntag == "Null":
266			obj.value = None
267			elif hasattr(ua.ua_binary.Primitives1, ntag):
268			# Elementary types have their parsing directly relying on ua_type_to_python.
269			obj.value = ua_type_to_python(val_el.text, ntag)
270			elif ntag == "DateTime":
271			obj.value = ua_type_to_python(val_el.text, ntag)
272			# According to specs, DateTime should be either UTC or with a timezone.
273			if obj.value.tzinfo is None or obj.value.tzinfo.utcoffset(obj.value) is None:
274			utc.localize(obj.value) # FIXME Forcing to UTC if unaware, maybe should raise?
275			elif ntag == "ByteString":
276			if val_el.text is None:
277			mytext = b""
278			else:
279			mytext = val_el.text.encode()
280			mytext = base64.b64decode(mytext)
281			obj.value = mytext
282			elif ntag == "String":
283			mytext = val_el.text
284			if mytext is None:
285			# Support importing null strings.
286			mytext = ""
287			# mytext = mytext.replace('\n', '').replace('\r', '')
288			obj.value = mytext
289			elif ntag == "Guid":
290			self._parse_contained_value(val_el, obj)
291			# Override parsed string type to guid.
292			obj.valuetype = ntag
293			elif ntag == "NodeId":
294			id_el = val_el.find("uax:Identifier", self.ns)
295			if id_el is not None:
296			obj.value = id_el.text
297			elif ntag == "ExtensionObject":
298			obj.value = self._parse_ext_obj(val_el)
299			elif ntag == "LocalizedText":
300			obj.value = self._parse_body(val_el)
301			elif ntag == "ListOfLocalizedText":
302			obj.value = self._parse_list_of_localized_text(val_el)
303			elif ntag == "ListOfExtensionObject":
304			obj.value = self._parse_list_of_extension_object(val_el)
305			elif ntag.startswith("ListOf"):
306			# Default case for "ListOf" types.
307			# Should stay after particular cases (e.g.: "ListOfLocalizedText").
308			obj.value = []
309			for val_el in val_el:
310			tmp = NodeData()
311			self._parse_value(val_el, tmp)
312			obj.value.append(tmp.value)
313			else:
314			# Missing according to string_to_val: XmlElement, ExpandedNodeId,
315			# QualifiedName, StatusCode.
316			# Missing according to ua.VariantType (also missing in string_to_val):
317			# DataValue, Variant, DiagnosticInfo.
318			self.logger.warning("Parsing value of type '%s' not implemented", ntag)
319
320			def _get_text(self, el):
321			txtlist = [txt.strip() for txt in el.itertext()]
322			return "".join(txtlist)
323
324			def _parse_list_of_localized_text(self, el):
325			value = []
326			for localized_text in el:
327			mylist = self._parse_body(localized_text)
328			# each localized text is in a dictionary with "Locale" and "Text" keys
329			item = {"Text": None, "Locale": None}
330			for name, val in mylist:
331			item.update({str(name): val})
332			# value is an array of dictionaries with localized texts
333			value.append(item)
334			return value
335
336			def _parse_list_of_extension_object(self, el):
337			"""
338			Parse a uax:ListOfExtensionObject Value
339			Return an list of ExtObj
340			"""
341			value = []
342			for extension_object in el:
343			ext_obj = self._parse_ext_obj(extension_object)
344			value.append(ext_obj)
345			return value
346
347			def _parse_ext_obj(self, el):
348			ext = ExtObj()
349			for extension_object_part in el:
350			ntag = self._retag.match(extension_object_part.tag).groups()[1]
351			if ntag == 'TypeId':
352			ntag = self._retag.match(extension_object_part.find('*').tag).groups()[1]
353			ext.typeid = self._get_text(extension_object_part)
354			elif ntag == 'Body':
355			ext.objname = self._retag.match(extension_object_part.find('*').tag).groups()[1]
356			ext.body = self._parse_body(extension_object_part)
357			else:
358			self.logger.warning("Unknown ntag", ntag)
359			return ext
360
361			def _parse_body(self, el):
362			body = []
363			for body_item in el:
364			otag = self._retag.match(body_item.tag).groups()[1]
365			childs = [i for i in body_item]
366			if not childs:
367			val = self._get_text(body_item)
368			else:
369			val = self._parse_body(body_item)
370			if val:
371			body.append((otag, val))
372			return body
373
374			def _parse_refs(self, el, obj):
375			parent, parentlink = obj.parent, None
376
377			for ref in el:
378			struct = RefStruct()
379			struct.forward = "IsForward" not in ref.attrib or ref.attrib["IsForward"] not in ("false", "False")
380			struct.target = ref.text
381			struct.reftype = ref.attrib["ReferenceType"]
382			obj.refs.append(struct)
383
384			if ref.attrib["ReferenceType"] == "HasTypeDefinition":
385			obj.typedef = ref.text
386			elif not struct.forward:
387			parent, parentlink = struct.target, struct.reftype
388			if obj.parent == parent or obj.parent != parent and not obj.parentlink:
389			obj.parentlink = parentlink
390
391			if obj.parent and not obj.parentlink:
392			# the case of asimple parent attribute without any reverse link
393			obj.parentlink = "HasComponent"
394			if not obj.parent:
395			obj.parent, obj.parentlink = parent, parentlink
396			if not obj.parent:
397			self.logger.info("Could not find parent for node '%s'", obj.nodeid)
398

FreeOpcUa / opcua-asyncio

Pull Request — master (#331)

asyncua.common.xmlparser.XMLParser._parse_attr() C

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