diff piecrust/templating/pystacheengine.py @ 440:32c7c2d219d2

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 ca5a3c970263
children 96d363e2da4b
line wrap: on
line diff
--- a/piecrust/templating/pystacheengine.py	Sat Jun 27 22:28:32 2015 -0700
+++ b/piecrust/templating/pystacheengine.py	Sun Jun 28 08:22:39 2015 -0700
@@ -1,4 +1,5 @@
 import logging
+import collections.abc
 import pystache
 import pystache.common
 from piecrust.templating.base import (
@@ -70,7 +71,9 @@
             # a list. This is just plain wrong, but it will take a while before
             # the project can get patches on Pypi.
             res = mrc(stack, name)
-            if res is not None and res.__class__.__name__ in _knowns:
+            if res is not None and (
+                    res.__class__.__name__ in _knowns or
+                    isinstance(res, collections.abc.Mapping)):
                 res = [res]
             return res