spaCy/spacy/tokens/underscore.py

51 lines
1.8 KiB
Python

import functools
class Underscore(object):
doc_extensions = {}
span_extensions = {}
token_extensions = {}
def __init__(self, extensions, obj, start=None, end=None):
object.__setattr__(self, '_extensions', extensions)
object.__setattr__(self, '_obj', obj)
# Assumption is that for doc values, _start and _end will both be None
# Span will set non-None values for _start and _end
# Token will have _start be non-None, _end be None
# This lets us key everything into the doc.user_data dictionary,
# (see _get_key), and lets us use a single Underscore class.
object.__setattr__(self, '_doc', obj.doc)
object.__setattr__(self, '_start', start)
object.__setattr__(self, '_end', end)
def __getattr__(self, name):
if name not in self._extensions:
raise AttributeError(name)
default, method, getter, setter = self._extensions[name]
if getter is not None:
return getter(self._obj)
elif method is not None:
return functools.partial(method, self._obj)
else:
return self._doc.user_data.get(self._get_key(name), default)
def __setattr__(self, name, value):
if name not in self._extensions:
raise AttributeError(name)
default, method, getter, setter = self._extensions[name]
if setter is not None:
return setter(self._obj, value)
else:
self._doc.user_data[self._get_key(name)] = value
def set(self, name, value):
return self.__setattr__(name, value)
def get(self, name):
return self.__getattr__(name)
def has(self, name):
return name in self._extensions
def _get_key(self, name):
return ('._.', name, self._start, self._end)