mapanything/utils/warnings.py

# Copyright (c) Meta Platforms, Inc. and affiliates.
#
# This source code is licensed under the Apache License, Version 2.0
# found in the LICENSE file in the root directory of this source tree.

"""
Wrapper utilities for warnings.
"""

import warnings
from functools import wraps


def suppress_traceback(fn):
    @wraps(fn)
    def wrapper(*args, **kwargs):
        try:
            return fn(*args, **kwargs)
        except Exception as e:
            e.__traceback__ = e.__traceback__.tb_next.tb_next
            raise

    return wrapper


class no_warnings:
    def __init__(self, action: str = "ignore", **kwargs):
        self.action = action
        self.filter_kwargs = kwargs

    def __call__(self, fn):
        @wraps(fn)
        def wrapper(*args, **kwargs):
            with warnings.catch_warnings():
                warnings.simplefilter(self.action, **self.filter_kwargs)
                return fn(*args, **kwargs)

        return wrapper

    def __enter__(self):
        self.warnings_manager = warnings.catch_warnings()
        self.warnings_manager.__enter__()
        warnings.simplefilter(self.action, **self.filter_kwargs)

    def __exit__(self, exc_type, exc_val, exc_tb):
        self.warnings_manager.__exit__(exc_type, exc_val, exc_tb)