29 lines
1.3 KiB
Python
29 lines
1.3 KiB
Python
import importlib
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class CondFunc:
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def __new__(cls, orig_func, sub_func, cond_func):
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self = super(CondFunc, cls).__new__(cls)
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if isinstance(orig_func, str):
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func_path = orig_func.split('.')
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for i in range(len(func_path)-2, -1, -1):
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try:
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resolved_obj = importlib.import_module('.'.join(func_path[:i]))
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break
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except ImportError:
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pass
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for attr_name in func_path[i:-1]:
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resolved_obj = getattr(resolved_obj, attr_name)
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orig_func = getattr(resolved_obj, func_path[-1])
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setattr(resolved_obj, func_path[-1], lambda *args, **kwargs: self(*args, **kwargs))
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self.__init__(orig_func, sub_func, cond_func)
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return lambda *args, **kwargs: self(*args, **kwargs)
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def __init__(self, orig_func, sub_func, cond_func):
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self.__orig_func = orig_func
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self.__sub_func = sub_func
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self.__cond_func = cond_func
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def __call__(self, *args, **kwargs):
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if not self.__cond_func or self.__cond_func(self.__orig_func, *args, **kwargs):
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return self.__sub_func(self.__orig_func, *args, **kwargs)
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else:
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return self.__orig_func(*args, **kwargs)
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