-setattr(ConstantIncludeNode, LOADED_TEMPLATE_ATTR, property(get_included))
-
-
-def nodelist_crawl(nodelist, callback):
- """This function crawls through a template's nodelist and the nodelists of any included or extended
- templates, as determined by the presence and value of <LOADED_TEMPLATE_ATTR> on a node. Each node
- will also be passed to a callback function for additional processing."""
- results = []
- for node in nodelist:
- try:
- if hasattr(node, 'child_nodelists'):
- for nodelist_name in node.child_nodelists:
- if hasattr(node, nodelist_name):
- results.extend(nodelist_crawl(getattr(node, nodelist_name), callback))
-
- # LOADED_TEMPLATE_ATTR contains the name of an attribute philo uses to declare a
- # node as rendering an additional template. Philo monkeypatches the attribute onto
- # the relevant default nodes and declares it on any native nodes.
- if hasattr(node, LOADED_TEMPLATE_ATTR):
- loaded_template = getattr(node, LOADED_TEMPLATE_ATTR)
- if loaded_template:
- results.extend(nodelist_crawl(loaded_template.nodelist, callback))
-
- callback(node, results)
- except:
- raise # fail for this node
- return results
\ No newline at end of file