pythonVSCode/pythonFiles/rope/base/utils.py at master · privat1/pythonVSCode · GitHub

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import warnings

def saveit(func):

"""A decorator that caches the return value of a function"""

name = '_' + func.__name__

def _wrapper(self, *args, **kwds):

if not hasattr(self, name):

setattr(self, name, func(self, *args, **kwds))

return getattr(self, name)

return _wrapper

cacheit = saveit

def prevent_recursion(default):

"""A decorator that returns the return value of `default` in recursions"""

def decorator(func):

name = '_calling_%s_' % func.__name__

def newfunc(self, *args, **kwds):

if getattr(self, name, False):

return default()

setattr(self, name, True)

try:

return func(self, *args, **kwds)

finally:

setattr(self, name, False)

return newfunc

return decorator

def ignore_exception(exception_class):

"""A decorator that ignores `exception_class` exceptions"""

def _decorator(func):

def newfunc(*args, **kwds):

try:

return func(*args, **kwds)

except exception_class:

pass

return newfunc

return _decorator

def deprecated(message=None):

"""A decorator for deprecated functions"""

def _decorator(func, message=message):

if message is None:

message = '%s is deprecated' % func.__name__

def newfunc(*args, **kwds):

warnings.warn(message, DeprecationWarning, stacklevel=2)

return func(*args, **kwds)

return newfunc

return _decorator

def cached(count):

"""A caching decorator based on parameter objects"""

def decorator(func):

return _Cached(func, count)

return decorator

class _Cached(object):

def __init__(self, func, count):

self.func = func

self.cache = []

self.count = count

def __call__(self, *args, **kwds):

key = (args, kwds)

for cached_key, cached_result in self.cache:

if cached_key == key:

return cached_result

result = self.func(*args, **kwds)

self.cache.append((key, result))

if len(self.cache) > self.count:

del self.cache[0]

return result

pythonVSCode/pythonFiles/rope/base/utils.py at master · privat1/pythonVSCode · GitHub

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