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# Copyright 2022-2025 MetaOPT Team. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ==============================================================================
"""Integrations with third-party libraries."""
from __future__ import annotations
from typing import TYPE_CHECKING
if TYPE_CHECKING:
from types import ModuleType
from optree.integrations import jax, numpy, torch
SUBMODULES: frozenset[str] = frozenset({'jax', 'numpy', 'torch'})
def __dir__() -> list[str]:
return [*sorted(SUBMODULES), 'SUBMODULES']
def __getattr__(name: str, /) -> ModuleType:
if name in SUBMODULES:
import importlib # pylint: disable=import-outside-toplevel
import sys # pylint: disable=import-outside-toplevel
module = sys.modules[__name__]
submodule = importlib.import_module(f'{__name__}.{name}') # pragma: no cover
setattr(module, name, submodule) # pragma: no cover
return submodule # pragma: no cover
raise AttributeError(f'module {__name__!r} has no attribute {name!r}')
del TYPE_CHECKING
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