"""GPS data wrapper."""
# Copyright 2022 Universidad Politécnica de Madrid
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# * 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.
#
# * Neither the name of the 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
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__authors__ = 'Miguel Fernández Cortizas, Pedro Arias Pérez, David Pérez Saura, Rafael Pérez Seguí'
__copyright__ = 'Copyright (c) 2022 Universidad Politécnica de Madrid'
__license__ = 'BSD-3-Clause'
from dataclasses import dataclass, field
import threading
from typing import Callable, List
lock = threading.Lock()
[docs]
def lock_decor(func: Callable) -> Callable:
"""Locker."""
def wrapper(self, *args, **kwargs) -> Callable:
with lock:
return func(self, *args, **kwargs)
return wrapper
[docs]
@dataclass
class GpsData:
"""GPS data [lat, lon, alt]."""
__lat: float = field(default_factory=lambda: float('nan'))
__lon: float = field(default_factory=lambda: float('nan'))
__alt: float = field(default_factory=lambda: float('nan'))
def __repr__(self) -> str:
fix = self.fix
return f'[{fix[0]}, {fix[1]}, {fix[2]}]'
@property
@lock_decor
def fix(self) -> List[float]:
"""Locked getter."""
return [self.__lat, self.__lon, self.__alt]
@fix.setter
@lock_decor
def fix(self, fix: List[float]) -> None:
"""Locked setter."""
self.__lat = fix[0]
self.__lon = fix[1]
self.__alt = fix[2]