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comparison piecrust/data/piecrustdata.py @ 440:32c7c2d219d2

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performance: Refactor how data is managed to reduce copying. * Make use of `collections.abc.Mapping` to better identify things that are supposed to look like dictionaries. * Instead of handling "overlay" of data in a dict tree in each different data object, make all objects `Mapping`s and handle merging at a higher level with the new `MergedMapping` object. * Since this new object is read-only, remove the need for deep-copying of app and page configurations. * Split data classes into separate modules.
author Ludovic Chabant <ludovic@chabant.com>
date Sun, 28 Jun 2015 08:22:39 -0700
parents
children 93b656f0af54
comparison
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439:c0700c6d9545 440:32c7c2d219d2
1 import logging
2 from piecrust import APP_VERSION
3 from piecrust.data.debug import build_debug_info
4
5
6 logger = logging.getLogger(__name__)
7
8
9 class PieCrustData(object):
10 debug_render = ['version', 'url', 'branding', 'debug_info']
11 debug_render_invoke = ['version', 'url', 'branding', 'debug_info']
12 debug_render_redirect = {'debug_info': '_debugRenderDebugInfo'}
13
14 def __init__(self):
15 self.version = APP_VERSION
16 self.url = 'http://bolt80.com/piecrust/'
17 self.branding = 'Baked with <em><a href="%s">PieCrust</a> %s</em>.' % (
18 'http://bolt80.com/piecrust/', APP_VERSION)
19 self._page = None
20 self._data = None
21
22 @property
23 def debug_info(self):
24 if self._page is not None and self._data is not None:
25 try:
26 return build_debug_info(self._page, self._data)
27 except Exception as ex:
28 logger.exception(ex)
29 return ('An error occured while generating debug info. '
30 'Please check the logs.')
31 return ''
32
33 def _enableDebugInfo(self, page, data):
34 self._page = page
35 self._data = data
36
37 def _debugRenderDebugInfo(self):
38 return "The very thing you're looking at!"