| #!/usr/bin/env python3 |
| # |
| # Copyright (c) 2020, The OpenThread Authors. |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are met: |
| # 1. Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # 2. Redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution. |
| # 3. Neither the name of the copyright holder nor the |
| # names of its contributors may be used to endorse or promote products |
| # derived from this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| # POSSIBILITY OF SUCH DAMAGE. |
| # |
| import functools |
| from typing import Union, Collection, Any, Pattern |
| |
| |
| def match_line(line: str, expect_line: Union[str, Pattern, Collection[Any]]) -> bool: |
| """Checks if a line is expected (matched by one of the given patterns).""" |
| if isinstance(expect_line, Pattern): |
| match = expect_line.match(line) |
| elif isinstance(expect_line, str): |
| match = (line == expect_line) |
| else: |
| match = any(match_line(line, x) for x in expect_line) |
| |
| return match |
| |
| |
| def cached(func): |
| """Decorator cached makes the function to cache its result and return it in duplicate calls.""" |
| prop_name = '__cached_' + func.__name__ |
| |
| @functools.wraps(func) |
| def _cached_func(self): |
| try: |
| return getattr(self, prop_name) |
| except AttributeError: |
| val = func(self) |
| setattr(self, prop_name, val) |
| return val |
| |
| return _cached_func |
| |
| |
| def constant_property(func): |
| """A constant property is a property that only evaluated once.""" |
| return property(cached(func)) |