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from __future__ import annotations
import collections
import collections.abc
import typing
from typing import Any
from pydantic_core import PydanticOmit, core_schema
SEQUENCE_ORIGIN_MAP: dict[Any, Any] = {
typing.Deque: collections.deque,
collections.deque: collections.deque,
list: list,
typing.List: list,
set: set,
typing.AbstractSet: set,
typing.Set: set,
frozenset: frozenset,
typing.FrozenSet: frozenset,
typing.Sequence: list,
typing.MutableSequence: list,
typing.MutableSet: set,
# this doesn't handle subclasses of these
# parametrized typing.Set creates one of these
collections.abc.MutableSet: set,
collections.abc.Set: frozenset,
}
def serialize_sequence_via_list(
v: Any, handler: core_schema.SerializerFunctionWrapHandler, info: core_schema.SerializationInfo
) -> Any:
items: list[Any] = []
mapped_origin = SEQUENCE_ORIGIN_MAP.get(type(v), None)
if mapped_origin is None:
# we shouldn't hit this branch, should probably add a serialization error or something
return v
for index, item in enumerate(v):
try:
v = handler(item, index)
except PydanticOmit:
pass
else:
items.append(v)
if info.mode_is_json():
return items
else:
return mapped_origin(items)
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