mirror of
https://github.com/explosion/spaCy.git
synced 2024-11-11 12:18:04 +03:00
dd99872bb0
* failing unit test * ensure that doc.spans refers to the copied doc, not the old * add type info
55 lines
2.0 KiB
Python
55 lines
2.0 KiB
Python
from typing import Iterable, Tuple, Union, TYPE_CHECKING
|
|
import weakref
|
|
from collections import UserDict
|
|
import srsly
|
|
|
|
from .span_group import SpanGroup
|
|
|
|
if TYPE_CHECKING:
|
|
# This lets us add type hints for mypy etc. without causing circular imports
|
|
from .doc import Doc # noqa: F401
|
|
from .span import Span # noqa: F401
|
|
|
|
|
|
# Why inherit from UserDict instead of dict here?
|
|
# Well, the 'dict' class doesn't necessarily delegate everything nicely,
|
|
# for performance reasons. The UserDict is slower by better behaved.
|
|
# See https://treyhunner.com/2019/04/why-you-shouldnt-inherit-from-list-and-dict-in-python/0ww
|
|
class SpanGroups(UserDict):
|
|
"""A dict-like proxy held by the Doc, to control access to span groups."""
|
|
|
|
def __init__(
|
|
self, doc: "Doc", items: Iterable[Tuple[str, SpanGroup]] = tuple()
|
|
) -> None:
|
|
self.doc_ref = weakref.ref(doc)
|
|
UserDict.__init__(self, items)
|
|
|
|
def __setitem__(self, key: str, value: Union[SpanGroup, Iterable["Span"]]) -> None:
|
|
if not isinstance(value, SpanGroup):
|
|
value = self._make_span_group(key, value)
|
|
assert value.doc is self.doc_ref()
|
|
UserDict.__setitem__(self, key, value)
|
|
|
|
def _make_span_group(self, name: str, spans: Iterable["Span"]) -> SpanGroup:
|
|
return SpanGroup(self.doc_ref(), name=name, spans=spans)
|
|
|
|
def copy(self, doc: "Doc" = None) -> "SpanGroups":
|
|
if doc is None:
|
|
doc = self.doc_ref()
|
|
return SpanGroups(doc).from_bytes(self.to_bytes())
|
|
|
|
def to_bytes(self) -> bytes:
|
|
# We don't need to serialize this as a dict, because the groups
|
|
# know their names.
|
|
msg = [value.to_bytes() for value in self.values()]
|
|
return srsly.msgpack_dumps(msg)
|
|
|
|
def from_bytes(self, bytes_data: bytes) -> "SpanGroups":
|
|
msg = srsly.msgpack_loads(bytes_data)
|
|
self.clear()
|
|
doc = self.doc_ref()
|
|
for value_bytes in msg:
|
|
group = SpanGroup(doc).from_bytes(value_bytes)
|
|
self[group.name] = group
|
|
return self
|