"""
Copyright 2020 The OneFlow Authors. 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.
"""

_global_is_global = False


class GlobalScope:
    def __init__(self):
        pass

    def __enter__(self, *argc, **kwarg):
        global _global_is_global
        self.last_is_global = _global_is_global
        _global_is_global = True

    def __exit__(self, *argc, **kwarg):
        global _global_is_global
        _global_is_global = self.last_is_global


def is_global():
    return _global_is_global
