/usr/lib/python2.7/dist-packages/ufl/protocols.py is in python-ufl 1.4.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | def id_or_none(obj):
"""Returns None if the object is None, obj.ufl_id() if available, or id(obj) if not.
This allows external libraries to implement an alternative
to id(obj) in the ufl_id() function, such that ufl can identify
objects as the same without knowing about their types.
"""
if obj is None:
return None
elif hasattr(obj, 'ufl_id'):
return obj.ufl_id()
else:
#warning("Expecting an object implementing the ufl_id function.") # TODO: Can we enable this? Not sure about meshfunctions etc in dolfin.
return id(obj)
def metadata_equal(a, b):
return (sorted((k,id(v)) for k,v in a.items()) ==
sorted((k,id(v)) for k,v in b.items()))
def metadata_hashdata(md):
return tuple(sorted((k,id(v)) for k,v in md.items()))
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