22. class SpTail: Scanner for the species
tail
This class handles only the scanning logic for the tail part of
a species line in the standard forms file.
nomcompile3
# - - - - c l a s s S p T a i l
class SpTail(object):
'''Parses the tail section of a species line in the std file.
Exports:
SpTail ( scan ):
[ scan is a Scan instance ->
if the balance of the line in scan is a valid
species tail ->
scan := scan advanced to end of line
return a new SpTail instance representing the
fields of that line
else ->
scan := scan advanced not past end of line
Log() +:= error message(s)
raise SyntaxError ]
.genus: [ genus name ]
.subgenus:
[ if the line had a subgenus field -> its name
else -> None ]
.species: [ species name ]
.eng: [ English name ]
.disamb:
[ if the line has a disambiguated code -> that code
else -> None ]
.canonical:
[ the bird code derived from self.eng by the standard rules ]
'''
