annotate plugins/cherrypy/lib/aspect.py @ 64:5a3f8d9181eb ornery-dev

Traipse Dev 'OpenRPG' {090817-01} Traipse is a distribution of OpenRPG that is designed to be easy to setup and go. Traipse also makes it easy for developers to work on code without fear of sacrifice. 'Ornery-Orc' continues the trend of 'Grumpy' and adds fixes to the code. 'Ornery-Orc''s main goal is to offer more advanced features and enhance the productivity of the user. Update Summary: Added a more aesthetically pleasing border to the die images.
author sirebral
date Mon, 17 Aug 2009 04:49:17 -0500
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1 """
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2 Copyright (c) 2004, CherryPy Team (team@cherrypy.org)
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3 All rights reserved.
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4
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5 Redistribution and use in source and binary forms, with or without modification,
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6 are permitted provided that the following conditions are met:
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7
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8 * Redistributions of source code must retain the above copyright notice,
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9 this list of conditions and the following disclaimer.
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10 * Redistributions in binary form must reproduce the above copyright notice,
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11 this list of conditions and the following disclaimer in the documentation
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12 and/or other materials provided with the distribution.
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13 * Neither the name of the CherryPy Team nor the names of its contributors
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14 may be used to endorse or promote products derived from this software
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15 without specific prior written permission.
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16
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17 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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18 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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19 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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20 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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21 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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22 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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23 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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24 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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25 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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26 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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27 """
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28
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29 # return codes for _before and _after aspect methods
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30 STOP = 0
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31 CONTINUE = 1
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32
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33 class Aspect(object):
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34 """
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35 Base class for aspects. Derive new aspect classes from this, then
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36 override one or both of _before and _after.
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37 """
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38
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39 def __getattribute__(self, methodName):
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40
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41 # find method specified by methodName
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42 try:
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43 method = object.__getattribute__(self, methodName)
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44 except:
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45 raise
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46
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47 # if requested attribute is not a method, simply return it
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48 if not callable(method):
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49 return method
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50
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51 # define wrapper function
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52 def _wrapper(*k, **kw):
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53 # call _before method
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54 status, value = object.__getattribute__(self, '_before')(methodName, method)
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55 if status == STOP:
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56 return value
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57
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58 # call wrapped method and append results
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59 result = method(*k, **kw)
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60 if value:
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61 result = value + result
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62
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63 # call _after method
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64 status, value = object.__getattribute__(self, '_after')(methodName, method)
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65 if status == STOP:
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66 return value
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67 if value:
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68 result += value
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69
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70 # done!
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71 return result
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72
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73 # expose wrapper function if wrapped method is exposed
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74 if getattr(method, 'exposed', None):
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75 _wrapper.exposed = True
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76
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77 # return wrapper function. It'll get called instead of the
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78 # requested method.
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79 return _wrapper
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80
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81
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82 def _before(self, methodName, method):
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83 return CONTINUE, None
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84
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85
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86 def _after(self, methodName, method):
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87 return CONTINUE, None