Exception during documentation with nested structure

[Simone Abbati]

Consider the example:

----------
class ExampleRoot(WSRoot):
    @expose(unicode, unicode) # First parameter is the return type,
                               # then the function argument types
    def hello(self, who=u'World'):
        return u"Hello {0} !".format(who)

class MyService(WSRoot):
    u"""WebServices Root"""

    #: Example "folder"
    example = ExampleRoot()
--------------

This fails trying to generate the documentation.
---------------------
Running Sphinx v1.3.1
     [exec] loading translations [it]... done
     [exec] loading pickled environment... not yet created
     [exec] loading intersphinx inventory from http://docs.python.org/objects.inv...
     [exec] building [mo]: targets for 0 po files that are out of date
     [exec] building [html]: targets for 3 source files that are out of date
     [exec] updating environment: 3 added, 0 changed, 0 removed
     [exec] reading sources... [ 33%] index
     [exec] reading sources... [ 66%] services
     [exec] Exception occurred:
     [exec] File "/opt/myproject/programs/core/python/lib/python2.7/site-packages/wsmeext/sphinxext.py", line 126, in scan_services
     [exec] raise ValueError("Path is too long: " + str(path))
     [exec] ValueError: Path is too long: ['addprotocol', 'im_func', 'func_code', 'co_argcount', 'denominator', 'denominator', 'denominator', 'denominator', 'de
nominator', 'denominator', 'denominator', 'denominator', 'denominator', 'denominator', 'denominator', 'denominator', 'denominator', 'denominator', 'denominator'
, 'denominator', 'denominator']
     [exec] The full traceback has been saved in /tmp/sphinx-err-B6_kSF.log, if you want to report the issue to the developers.
     [exec] Please also report this if it was a user error, so that a better error message can be provided next time.
     [exec] A bug report can be filed in the tracker at <https://github.com/sphinx-doc/sphinx/issues>. Thanks!
------------------

Full error log is in attachment.

This one works instead:
-------------
class MyService(WSRoot):
    @expose(unicode, unicode) # First parameter is the return type,
                               # then the function argument types
    def hello(self, who=u'World'):
        return u"Hello {0} !".format(who)
-----------

I fixed this but I am not sure about the impact of my patch, it just works good for me. It's not an elegant solution and I did not understand completely the problem tough...

Patch and full log in attachment.

[Simone Abbati (simone-abbati)]

Added patch attachment.
Notice line numbers inside the patch likely do not match (I also have other personal patch applied).