def p_attributeref(p):
'''attributeref : propertyref
| PERIOD propertyref
| objectref PERIOD propertyref
'''
# eg "methanol.etymology", "etymology" ("it." implied), ".etym"
n = len(p.slice)
if n == 2:
obj = abby.it # "it." is implied
prop = p[1]
elif n == 3:
obj = abby.it # "it." is implied
prop = p[2]
else:
obj = p[1]
prop = p[3]
attrib = Objects.Attribute(obj, prop)
p[0] = attrib
log.debug('p_attributeref: %s', p[0])
