$PdZddlmZddlmZddlmZddlZGddZd dZy) z3Utilities for caching the result of function calls.)absolute_import)division)unicode_literalsNc"eZdZdZdZdZdZy) FakeLruCachez>Doesn't actually cache but supports LRU interface in Python 2.c||_yN _function)selffunctions 6lib/googlecloudsdk/core/cache/function_result_cache.py__init__zFakeLruCache.__init__s DNcy)zFExposes this function of actual LRU to avoid missing attribute errors.N)r s r cache_clearzFakeLruCache.cache_clearsrc&|j|i|Sr r )r argskwargss r__call__zFakeLruCache.__call__"s 4>>4 *6 **rN)__name__ __module__ __qualname____doc__rrrrrrrrsF +rrcfd}|S)aReturns cached result if function was run with same args before. Wraps functools.lru_cache, so it's not referenced at import in Python 2 and unsupported Python 3 distributions. Args: maxsize (int|None): From Python functools docs: "...saves up to the maxsize most recent calls... If maxsize is set to None, the LRU feature is disabled and the cache can grow without bound." Returns: Wrapped functools.lru_cache. ctttddrtj|St|S)N lru_cache)maxsize)getattr functoolsrr)r rs r_wrapperzlru.._wrapper5s2y+t, 1Y  1( ;;  !!rr)rr"s` rlrur#&s" /r))r __future__rrrr!rr#rrrr&s%:&' + +r