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35 lines
1.2 KiB
Python
35 lines
1.2 KiB
Python
"""
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Created on 4 May 2013
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@author: mike
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"""
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class ValidityRoutines(object):
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"""Class to hold all validation routines, such as type checking"""
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def _check_type(self, value, valid_type):
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"""Checks that value is an instance of valid_type, and returns value if it is, or throws a TypeError otherwise
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:param value: The value of which to validate the type
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:type value: object
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:param valid_type: The type against which to validate
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:type valid_type: type
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"""
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assert isinstance(value,
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valid_type), self.__class__.__name__ + " expected " + valid_type.__name__ + ", not " + type(
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value).__name__
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return value
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def _check_class(self, klass, valid_class):
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"""Checks that class is an instance of valid_class, and returns klass if it is, or throws a TypeError otherwise
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:param klass: Class to validate
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:type klass: class
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:param valid_class: Valid class against which to check class validity
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:type valid_class: class
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"""
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assert issubclass(klass,
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valid_class), self.__class__.__name__ + " expected " + valid_class.__name__ + ", not " + klass.__name__
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return klass
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