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annotate intentmademanifest/actions.py @ 19:74ada5cb1cb8 default tip

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author Jeff Hammel <k0scist@gmail.com>
date Fri, 04 Dec 2015 12:55:31 -0800
parents c7585bd93680
children
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15
c7585bd93680 stub for actions module for python function dep unrolling
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1 #!/usr/bin/env python
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2
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3 """
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4 ``intentmademanifest.actions`` is a dependency resolver for python instance
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5 methods
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6 """
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7
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8 # TODO: generalize, if possible. For instance, we don't care about
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9 # parameter space; should we? how?
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10
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11 class Actions(object):
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12
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13 @classmethod
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14 def requires(cls, method, *requirements):
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15 """
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16 Require all dependencies to be run before invoking the method.
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17 - requirements: method names
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18 """
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19 # TODO: as is, the intent is to run all of the requirements
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20 # and then invoke ``method``
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21 # alternatively, e.g. via subclass, one could err out if the
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22 # requirements have not been run
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23
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24 class ActionsCLI(object):
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25 """command line handler for an actions-based class"""
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26 def __init__(self):
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27 raise NotImplementedError("TODO")
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28
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29 requires = Actions.requires
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30
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31 if __name__ == '__main__':
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32 # TODO: -> test
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33
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34 class ActionsExample(object):
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35 """example class for illustration of ``intentmademanifest.actions``"""
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36
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37 def foo(self):
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38 self.attr = 1
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39
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40 @requires('foo')
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41 def bar(self):
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42 self.attr *= 2
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43
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44 def fleem(self):
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45 self.another_attr = 3
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46
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47 @requires('bar', 'fleem')
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48 def result(self):
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49 return self.attr * self.another_attr
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50
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51 instance = ActionsExample()
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52 assert instance.result() == 6