# HG changeset patch
# User Gregory Szorc <gregory.szorc@gmail.com>
# Date 1420053737 28800
# Node ID ae5447de4c1100661fdff69397f70358394da512
# Parent  3314664606e63e0ae263b71f5210e8153291efe8
templatefilters.json: call functions

The "changeset" template from hgweb is using a lambda in the
"diffsummary" key. In preparation for enabling JSON output from hgweb,
teach the json filter how to call functions.

diff -r 3314664606e6 -r ae5447de4c11 mercurial/templatefilters.py
--- a/mercurial/templatefilters.py	Thu Jan 01 16:47:14 2015 -0600
+++ b/mercurial/templatefilters.py	Wed Dec 31 11:22:17 2014 -0800
@@ -208,6 +208,8 @@
         for i in obj:
             out.append(json(i))
         return '[' + ', '.join(out) + ']'
+    elif util.safehasattr(obj, '__call__'):
+        return json(obj())
     else:
         raise TypeError('cannot encode type %s' % obj.__class__.__name__)