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1# Copyright (c) 2014-2015, Intel Corporation
2# All rights reserved.
3#
4# Redistribution and use in source and binary forms, with or without modification,
5# are permitted provided that the following conditions are met:
6#
7# 1. Redistributions of source code must retain the above copyright notice, this
8# list of conditions and the following disclaimer.
9#
10# 2. Redistributions in binary form must reproduce the above copyright notice,
11# this list of conditions and the following disclaimer in the documentation and/or
12# other materials provided with the distribution.
13#
14# 3. Neither the name of the copyright holder nor the names of its contributors
15# may be used to endorse or promote products derived from this software without
16# specific prior written permission.
17#
18# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
19# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
22# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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26# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
29from clientsimulator.criterion.Criterion import Criterion
30from clientsimulator.criterion.ExclusiveCriterion import ExclusiveCriterion
31from clientsimulator.criterion.InclusiveCriterion import InclusiveCriterion
32
33
34class CriterionClassFactory:
35
36    def __init__(self, criteriaFileName):
37        self.__criteriaFileName = criteriaFileName
38
39    def __classFactory(self, name, allowedValues, base):
40        """
41            Private function which allows to dynamically create a new Criterion SubClass
42
43            :param name: name of the futur subclass
44            :type name: string
45            :param allowedValues: all values the criterion can take
46            :type allowedValues: string list
47            :param base: direct mother class of the created criterion subclass
48                         should be InclusiveCriterion or ExclusiveCriterion
49            :type base: type
50
51            :return: A criterion subclass
52            :rtype: type
53        """
54
55        def __init__(self):
56            """ Init Function of a Criterion Child Class """
57            base.__init__(self)
58
59        # Creation of the class with allowed values
60        # (allows to have only one instance of the list)
61        return type(
62            name, (base,), {
63                "__init__": __init__, "_allowedValues": allowedValues})
64
65    def generateCriterionClasses(self):
66        """ Function invoqued to generate Criterion Childs classes from an AudioCriteria file"""
67
68        # Parsing criterions File
69        with open(self.__criteriaFileName, "r") as criteria:
70            criteriaLines = criteria.readlines()
71
72        parsedCriteria = [(typeAndName.split(), allowedValues.split())
73                          for typeAndName, allowedValues
74                          in (line.split(':') for line in criteriaLines)]
75
76        generatedClasses = {}
77        # Creation of needed classes thanks to criteria File information,
78        # such as BaseClass, criterion name and possible values
79        generatedClasses = [
80            self.__classFactory(className, allowedValues, globals()[classBase])
81            for (classBase, className), allowedValues in parsedCriteria
82        ]
83
84        return generatedClasses
85