#!/usr/bin/env python3
# -*- coding: utf-8 -*-

# Copyright (c) 2020, NVIDIA CORPORATION. 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.


class Config(object):
    _instance = None

    # Overloading the __new__ method enables singleton behavior
    def __new__(cls, *args, **kwargs):
        if cls._instance is None:
            cls._instance = super(Config, cls).__new__(cls)
            cls.func_stack_enabled = kwargs.get("enable_function_stack",
                                                False) or kwargs.get("capture_input_ops", False)
            cls.capture_input_ops = kwargs.get("capture_input_ops", False)
            cls.delay_graph_capture = kwargs.get("delay_graph_capture", False)
            cls.debug_graph         = kwargs.get("debug_graph", False)
        return cls._instance
