kodjo
87cab44fb8
Fixed #135: Change services service priorities Fixed #136: ErrorManager: Implement recognize_error Fixed #137: BNFNodeParser : Error when parsing regex with sub parsers Fixed #138: get_last_errors(): real errors sources are lost Fixed #139: OneError return value removes the origin of the error Fixed #140: Concept variables are not correctly handled when parsing sub expression Fixed #143: Implement has_unknown_concepts()
72 lines
1.5 KiB
Python
72 lines
1.5 KiB
Python
from core.global_symbols import NotFound
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class FastCache:
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"""
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Simplest LRU cache
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"""
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def __init__(self, max_size=256, default=None):
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self.max_size = max_size
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self.cache = {}
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self.lru = []
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self.default = default
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self.calls = {}
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def __contains__(self, item):
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return self.has(item)
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def __iter__(self):
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yield from self.cache
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def __next__(self):
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return next(iter(self.cache))
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def __len__(self):
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return len(self.cache)
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def put(self, key, value):
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if len(self.cache) == self.max_size:
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del self.cache[self.lru.pop(0)]
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if key in self.cache:
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self.lru.remove(key)
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self.cache[key] = value
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self.lru.append(key)
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self.calls[key] = 0
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def has(self, key):
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return key in self.cache
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def get(self, key):
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try:
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res = self.cache[key]
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self.calls[key] += 1
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return res
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except KeyError:
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if self.default:
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value = self.default(key)
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self.put(key, value)
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return value
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return NotFound
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def evict_by_key(self, predicate):
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to_remove = []
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for k, v in self.cache.items():
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if predicate(k):
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to_remove.append(k)
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for k in to_remove:
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self.lru.remove(k)
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del self.cache[k]
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def copy(self):
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return self.cache.copy()
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def clear(self):
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self.cache.clear()
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self.lru.clear()
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