oval_graph.oval_tree.oval_node.OvalNode.change_value_of_node() - Code Metrics - Inspection of "[WIP] Rework oval_node" - OpenSCAP/oval-graph - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — master (#173)

by Jan

created 2021-05-07 16:37 UTC

OvalNode.change_value_of_node() A

↳ Parent: oval_graph.oval_tree.oval_node

Complexity

Conditions

Size

Total Lines	7
Code Lines	7

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	6
CRAP Score	2.0116

Importance

Changes

Metric	Value
eloc	7
dl	0
loc	7
ccs	6
cts	7
cp	0.8571
rs	10
c	0
b	0
f	0
cc	2
nop	3
crap	2.0116

from .evaluate import (is_notapp_result, oval_operator_and, oval_operator_one,
                       oval_operator_or, oval_operator_xor)


class OvalNode():
    """The Oval Node object is one node of the OVAL tree.
       The graphic representation of the OVAL tree is the OVAL graph.

    Attributes:
        node_id (str): id of node
        node_type (str): type node
        value (str): value of node for operator and, or, one etc... and for value true,
        false, error etc...
        negation (bool): value indicating whether the node is negated
        comment (str): some comment about node
        tag (str): tag specifies if the node represents OVAL test,
        OVAL definition or XCCDF rule
        test_result_details (dict|None): information about test
        children ([OvalNode]): children of node
    """

    def __init__(self, **kwargs):
        """This metode construct OvalNode and validate values of parameteres.

        Required args:
            node_id (str|int): identifies node
            node_type (str): type of node (value or operator)
            value (str): value of node

        Optional args:
            negation (bool): value indicating whether the node is negated (empty eq False)
            comment (str): text about node (empty eq None)
            tag (str): tag specifies if the node represents OVAL test,
            OVAL definition or XCCDF rule (empty eq None)
            test_result_details (dict|None): information about test (empty eq None)
            children ([OvalNode]): array of children of node (empty eq empty array)

        Raises:
            KeyError, TypeError, ValueError
        """
        try:
            self.node_id = kwargs['node_id']
            self.node_type = self._validate_type(kwargs['node_type'])
            self.value = self._validate_value(self.node_type, kwargs['value'])

            self._check_missing_children_for_operator(
                kwargs.get('children', None))
            self.negation = self._validate_negation(
                kwargs.get('negation', False))
        except KeyError as key_error:
            raise Exception("Missing required argument!") from key_error

        self.comment = kwargs.get('comment', None)
        self.tag = kwargs.get('tag', None)
        self.test_result_details = kwargs.get('test_result_details', None)

        input_children = kwargs.get('children', None)
        self.children = []
        if input_children:
            for child in input_children:
                self.add_child(child)

    @staticmethod
    def _validate_negation(input_negation):
        if not isinstance(input_negation, bool):
            raise TypeError("Wrong value of negation argument!")
        return input_negation

    @staticmethod
    def _validate_type(input_node_type):
        node_type = input_node_type.lower()
        if node_type not in ("value", "operator"):
            raise TypeError("Wrong value of node_type argument!")
        return node_type

    @staticmethod
    def _validate_value(input_node_type, input_value):
        value = input_value.lower()

        allowed_values = [
            "true",
            "false",
            "error",
            "unknown",
            "noteval",
            "notappl"]
        allowed_operators = ["or", "and", "one", "xor"]

        if input_node_type == "value" and value not in allowed_values:
            raise TypeError(
                "Wrong value of argument value for value node!")

        if input_node_type == "operator" and value not in allowed_operators:
            raise TypeError(
                "Wrong value of argument value for operator node!")

        return value

    def _check_missing_children_for_operator(self, children):
        if children is None and self.node_type == "operator":
            raise ValueError(
                "The operator node must have a child!")

    def __repr__(self):
        return self.value

    def add_child(self, node):
        if self.node_type == "operator":
            assert isinstance(node, OvalNode)
            self.children.append(node)
            return
        raise ValueError(
            "The value node cannot contain any child!")

    def _get_result_counts(self):
        result = {
            'true_cnt': 0,
            'false_cnt': 0,
            'error_cnt': 0,
            'unknown_cnt': 0,
            'noteval_cnt': 0,
            'notappl_cnt': 0
        }

        for child in self.children:
            if child.value == 'true' and not child.negation:
                result['true_cnt'] += 1
            elif child.value == 'true' and child.negation:
                result['false_cnt'] += 1
            elif child.value == 'false' and not child.negation:
                result['false_cnt'] += 1
            elif child.value == 'false' and child.negation:
                result['true_cnt'] += 1
            else:
                if child.node_type == "operator":
                    result[child.evaluate_tree() + "_cnt"] += 1
                else:
                    result[child.value + "_cnt"] += 1
        return result

    def evaluate_tree(self):
        result = self._get_result_counts()
        out_result = None
        if is_notapp_result(result):
            out_result = "notappl"
        else:
            if self.value == "or":
                out_result = oval_operator_or(result)
            elif self.value == "and":
                out_result = oval_operator_and(result)
            elif self.value == "one":
                out_result = oval_operator_one(result)
            elif self.value == "xor":
                out_result = oval_operator_xor(result)

        if out_result == 'true' and self.negation:
            out_result = 'false'
        elif out_result == 'false' and self.negation:
            out_result = 'true'

        return out_result

    def find_node_with_id(self, node_id):
        if self.node_id == node_id:
            return self
        for child in self.children:
            if child.node_id == node_id:
                return child
        for child in self.children:
            if child.children != []:
                return child.find_node_with_id(node_id)
        return None

    def add_child_to_node(self, node_id, new_node):
        node = self.find_node_with_id(node_id)
        if node is not None:
            node.add_child(new_node)
            return True
        return False

    def change_value_of_node(self, node_id, value):
        node = self.find_node_with_id(node_id)
        if node is not None:
            self._validate_value(node.node_type, value)
            node.value = value
            return True
        return False


1	1	from .evaluate import (is_notapp_result, oval_operator_and, oval_operator_one,
2		oval_operator_or, oval_operator_xor)
3
4
5	1	class OvalNode():
6		"""The Oval Node object is one node of the OVAL tree.
7		The graphic representation of the OVAL tree is the OVAL graph.
8
9		Attributes:
10		node_id (str): id of node
11		node_type (str): type node
12		value (str): value of node for operator and, or, one etc... and for value true,
13		false, error etc...
14		negation (bool): value indicating whether the node is negated
15		comment (str): some comment about node
16		tag (str): tag specifies if the node represents OVAL test,
17		OVAL definition or XCCDF rule
18		test_result_details (dict\|None): information about test
19		children ([OvalNode]): children of node
20		"""
21
22	1	def __init__(self, **kwargs):
23		"""This metode construct OvalNode and validate values of parameteres.
24
25		Required args:
26		node_id (str\|int): identifies node
27		node_type (str): type of node (value or operator)
28		value (str): value of node
29
30		Optional args:
31		negation (bool): value indicating whether the node is negated (empty eq False)
32		comment (str): text about node (empty eq None)
33		tag (str): tag specifies if the node represents OVAL test,
34		OVAL definition or XCCDF rule (empty eq None)
35		test_result_details (dict\|None): information about test (empty eq None)
36		children ([OvalNode]): array of children of node (empty eq empty array)
37
38		Raises:
39		KeyError, TypeError, ValueError
40		"""
41	1	try:
42	1	self.node_id = kwargs['node_id']
43	1	self.node_type = self._validate_type(kwargs['node_type'])
44	1	self.value = self._validate_value(self.node_type, kwargs['value'])
45
46	1	self._check_missing_children_for_operator(
47		kwargs.get('children', None))
48	1	self.negation = self._validate_negation(
49		kwargs.get('negation', False))
50	1	except KeyError as key_error:
51	1	raise Exception("Missing required argument!") from key_error
52
53	1	self.comment = kwargs.get('comment', None)
54	1	self.tag = kwargs.get('tag', None)
55	1	self.test_result_details = kwargs.get('test_result_details', None)
56
57	1	input_children = kwargs.get('children', None)
58	1	self.children = []
59	1	if input_children:
60	1	for child in input_children:
61	1	self.add_child(child)
62
63	1	@staticmethod
64		def _validate_negation(input_negation):
65	1	if not isinstance(input_negation, bool):
66	1	raise TypeError("Wrong value of negation argument!")
67	1	return input_negation
68
69	1	@staticmethod
70		def _validate_type(input_node_type):
71	1	node_type = input_node_type.lower()
72	1	if node_type not in ("value", "operator"):
73	1	raise TypeError("Wrong value of node_type argument!")
74	1	return node_type
75
76	1	@staticmethod
77		def _validate_value(input_node_type, input_value):
78	1	value = input_value.lower()
79
80	1	allowed_values = [
81		"true",
82		"false",
83		"error",
84		"unknown",
85		"noteval",
86		"notappl"]
87	1	allowed_operators = ["or", "and", "one", "xor"]
88
89	1	if input_node_type == "value" and value not in allowed_values:
90	1	raise TypeError(
91		"Wrong value of argument value for value node!")
92
93	1	if input_node_type == "operator" and value not in allowed_operators:
94	1	raise TypeError(
95		"Wrong value of argument value for operator node!")
96
97	1	return value
98
99	1	def _check_missing_children_for_operator(self, children):
100	1	if children is None and self.node_type == "operator":
101	1	raise ValueError(
102		"The operator node must have a child!")
103
104	1	def __repr__(self):
105	1	return self.value
106
107	1	def add_child(self, node):
108	1	if self.node_type == "operator":
109	1	assert isinstance(node, OvalNode)
110	1	self.children.append(node)
111	1	return
112	1	raise ValueError(
113		"The value node cannot contain any child!")
114
115	1	def _get_result_counts(self):
116	1	result = {
117		'true_cnt': 0,
118		'false_cnt': 0,
119		'error_cnt': 0,
120		'unknown_cnt': 0,
121		'noteval_cnt': 0,
122		'notappl_cnt': 0
123		}
124
125	1	for child in self.children:
126	1	if child.value == 'true' and not child.negation:
127	1	result['true_cnt'] += 1
128	1	elif child.value == 'true' and child.negation:
129	1	result['false_cnt'] += 1
130	1	elif child.value == 'false' and not child.negation:
131	1	result['false_cnt'] += 1
132	1	elif child.value == 'false' and child.negation:
133	1	result['true_cnt'] += 1
134		else:
135	1	if child.node_type == "operator":
136	1	result[child.evaluate_tree() + "_cnt"] += 1
137		else:
138	1	result[child.value + "_cnt"] += 1
139	1	return result
140
141	1	def evaluate_tree(self):
142	1	result = self._get_result_counts()
143	1	out_result = None
144	1	if is_notapp_result(result):
145	1	out_result = "notappl"
146		else:
147	1	if self.value == "or":
148	1	out_result = oval_operator_or(result)
149	1	elif self.value == "and":
150	1	out_result = oval_operator_and(result)
151	1	elif self.value == "one":
152	1	out_result = oval_operator_one(result)
153	1	elif self.value == "xor":
154	1	out_result = oval_operator_xor(result)
155
156	1	if out_result == 'true' and self.negation:
157	1	out_result = 'false'
158	1	elif out_result == 'false' and self.negation:
159	1	out_result = 'true'
160
161	1	return out_result
162
163	1	def find_node_with_id(self, node_id):
164	1	if self.node_id == node_id:
165	1	return self
166	1	for child in self.children:
167	1	if child.node_id == node_id:
168	1	return child
169	1	for child in self.children:
170	1	if child.children != []:
171	1	return child.find_node_with_id(node_id)
172		return None
173
174	1	def add_child_to_node(self, node_id, new_node):
175	1	node = self.find_node_with_id(node_id)
176	1	if node is not None:
177	1	node.add_child(new_node)
178	1	return True
179		return False
180
181	1	def change_value_of_node(self, node_id, value):
182	1	node = self.find_node_with_id(node_id)
183	1	if node is not None:
184	1	self._validate_value(node.node_type, value)
185	1	node.value = value
186	1	return True
187		return False
188

OpenSCAP / oval-graph

Pull Request — master (#173)

OvalNode.change_value_of_node() A

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