


from __future__ import annotations

from collections.abc import Callable
from typing import Generic, TypeVar

A_    :					Union[str, Any]             =TypeVar("""T""")
A_    :					Dict             =TypeVar("""U""")





class        lowercase_				( Generic[T, U]):


							def __init__(   self			,    _UpperCAmelCase			,    _UpperCAmelCase		):







													"""simple docstring"""


													a_					=		key
													a_					=		val
													a_					=		0
													a_					=		None
													a_					=		None






							def __repr__(   self		):







													"""simple docstring"""


													return "Node: key: {}, val: {}, freq: {}, has next: {}, has prev: {}".format(
													    self.key			,    self.val			,    self.freq			,    self.next is not None			,    self.prev is not None		)





class        lowercase_				( Generic[T, U]):


							def __init__(   self		):







													"""simple docstring"""


													a_					=		DoubleLinkedListNode(_UpperCAmelCase			,    _UpperCAmelCase		)
													a_					=		DoubleLinkedListNode(_UpperCAmelCase			,    _UpperCAmelCase		)
													a_					=		self.rear, self.head


							def __repr__(   self		):







													"""simple docstring"""


													a_					=		["DoubleLinkedList"]
													a_					=		self.head
													while node.next is not None:
																			rep.append(str(_UpperCAmelCase		)		)
																			a_					=		node.next
													rep.append(str(self.rear		)		)
													return ",\n    ".join(_UpperCAmelCase		)


							def 						lowercase__     (   self			,    _UpperCAmelCase		):







													"""simple docstring"""


													a_					=		self.rear.prev

													# All nodes other than self.head are guaranteed to have non-None previous
													assert previous is not None

													a_					=		node
													a_					=		previous
													a_					=		node
													a_					=		self.rear
													node.freq += 1
													self._position_node(_UpperCAmelCase		)


							def 						lowercase__     (   self			,    _UpperCAmelCase		):







													"""simple docstring"""


													while node.prev is not None and node.prev.freq > node.freq:
																			# swap node with previous node
																			a_					=		node.prev

																			a_					=		previous_node.prev
																			a_					=		node.prev
																			a_					=		previous_node
																			a_					=		node






							def 						lowercase__     (   self			,    _UpperCAmelCase		):







													"""simple docstring"""


													if node.prev is None or node.next is None:
																			return None

													a_					=		node.next
													a_					=		node.prev
													a_					=		None
													a_					=		None
													return node





class        lowercase_				( Generic[T, U]):
							snake_case_        =		{}


							def __init__(   self			,    _UpperCAmelCase		):







													"""simple docstring"""


													a_					=		DoubleLinkedList()
													a_					=		capacity
													a_					=		0
													a_					=		0
													a_					=		0
													a_					=		{}


							def __repr__(   self		):







													"""simple docstring"""


													return (
													    f"CacheInfo(hits={self.hits}, misses={self.miss}, "
													    f"capacity={self.capacity}, current_size={self.num_keys})"
													)


							def __contains__(   self			,    _UpperCAmelCase		):







													"""simple docstring"""


													return key in self.cache


							def 						lowercase__     (   self			,    _UpperCAmelCase		):







													"""simple docstring"""


													if key in self.cache:
																			self.hits += 1
																			a_					=		self.cache[key]
																			a_					=		self.list.remove(self.cache[key]		)
																			assert node == value_node

																			# node is guaranteed not None because it is in self.cache
																			assert node is not None
																			self.list.add(_UpperCAmelCase		)
																			return node.val
													self.miss += 1
													return None


							def 						lowercase__     (   self			,    _UpperCAmelCase			,    _UpperCAmelCase		):







													"""simple docstring"""


													if key not in self.cache:
																			if self.num_keys >= self.capacity:
																									# delete first node when over capacity
																									a_					=		self.list.head.next

																									# guaranteed to have a non-None first node when num_keys > 0
																									# explain to type checker via assertions
																									assert first_node is not None
																									assert first_node.key is not None
																									assert self.list.remove(_UpperCAmelCase		) is not None
																									# first_node guaranteed to be in list

																									del self.cache[first_node.key]
																									self.num_keys -= 1
																			a_					=		DoubleLinkedListNode(_UpperCAmelCase			,    _UpperCAmelCase		)
																			self.list.add(self.cache[key]		)
																			self.num_keys += 1

													else:
																			a_					=		self.list.remove(self.cache[key]		)
																			assert node is not None  # node guaranteed to be in list
																			a_					=		value
																			self.list.add(_UpperCAmelCase		)






							@classmethod
							def 						lowercase__     (   cls			,    _UpperCAmelCase = 128		):







													"""simple docstring"""


													def cache_decorator_inner(_UpperCAmelCase		) -> Callable[..., U]:
																			def cache_decorator_wrapper(*_UpperCAmelCase		) -> U:
																									if func not in cls.decorator_function_to_instance_map:
																															a_					=		LFUCache(_UpperCAmelCase		)

																									a_					=		cls.decorator_function_to_instance_map[func].get(args[0]		)
																									if result is None:
																															a_					=		func(*_UpperCAmelCase		)
																															cls.decorator_function_to_instance_map[func].put(args[0]			,    _UpperCAmelCase		)
																									return result

																			def cache_info() -> LFUCache[T, U]:
																									return cls.decorator_function_to_instance_map[func]

																			setattr(_UpperCAmelCase			,    """cache_info"""			,    _UpperCAmelCase		)  # noqa: B010

																			return cache_decorator_wrapper

													return cache_decorator_inner


if __name__ == "__main__":
	import doctest

	doctest.testmod()



import abc
import copy
import dataclasses
from dataclasses import dataclass
from typing import ClassVar, Dict, Type, TypeVar

from ..features import Features


A_    :					Tuple             =TypeVar("""T""", bound="""TaskTemplate""")





@dataclass(frozen=UpperCamelCase__)
class        lowercase_				( abc.ABC):






							"""simple docstring"""







							snake_case_        =		42
							snake_case_        =		42
							snake_case_        =		42


							def 						lowercase__     (   self			,    _UpperCAmelCase		):







													"""simple docstring"""


													return copy.deepcopy(self		)


							@property
							def 						lowercase__     (   self		):







													"""simple docstring"""


													return Features(**self.input_schema			,    **self.label_schema		)


							@property
							@abc.abstractmethod
							def 						lowercase__     (   self		):







													"""simple docstring"""


													raise NotImplementedError






							@classmethod
							def 						lowercase__     (   cls			,    _UpperCAmelCase		):







													"""simple docstring"""


													a_					=		{f.name for f in dataclasses.fields(cls		)}
													return cls(**{k: v for k, v in template_dict.items() if k in field_names}		)