




"""simple docstring"""




from collections.abc import Iterator, MutableMapping
from dataclasses import dataclass
from typing import Generic, TypeVar

a_        =       TypeVar('KEY')
a_        =       TypeVar('VAL')

@dataclass(frozen=snake_case   ,					slots=snake_case		)
class   UpperCAmelCase_    (			Generic[KEY, VAL]		):
		UpperCamelCase							=42
		UpperCamelCase							=42


class   UpperCAmelCase_    (			_Item		):
		def __init__(						self       )						->       None:
					super().__init__(UpperCamelCase_				,						UpperCamelCase_       )
		def __bool__(						self       )						->       bool:
					return False


a_        =       _DeletedItem()

class   UpperCAmelCase_    (			MutableMapping[KEY, VAL]		):
		def __init__(						self				,						UpperCamelCase_ = 8				,						UpperCamelCase_ = 0.7_5       )						->       None:
					__lowercase			:  Any								=       initial_block_size
					__lowercase			:  list[_Item | None]								=       [None] * initial_block_size
					assert 0.0 < capacity_factor < 1.0
					__lowercase			:  str								=       capacity_factor
					__lowercase			:  Dict								=       0
		def 	_lowerCamelCase							(						self				,						UpperCamelCase_       )						->       int:
					return hash(UpperCamelCase_       ) % len(self._buckets       )
		def 	_lowerCamelCase							(						self				,						UpperCamelCase_       )						->       int:
					return (ind + 1) % len(self._buckets       )
		def 	_lowerCamelCase							(						self				,						UpperCamelCase_				,						UpperCamelCase_				,						UpperCamelCase_       )						->       bool:
					__lowercase			:  Dict								=       self._buckets[ind]
					if not stored:
								__lowercase			:  Any								=       _Item(UpperCamelCase_				,						UpperCamelCase_       )
								self._len += 1
								return True
					elif stored.key == key:
								__lowercase			:  Optional[Any]								=       _Item(UpperCamelCase_				,						UpperCamelCase_       )
								return True
					else:
								return False
		def 	_lowerCamelCase							(						self       )						->       bool:
					__lowercase			:  str								=       len(self._buckets       ) * self._capacity_factor
					return len(self       ) >= int(UpperCamelCase_       )
		def 	_lowerCamelCase							(						self       )						->       bool:
					if len(self._buckets       ) <= self._initial_block_size:
								return False
					__lowercase			:  Union[str, Any]								=       len(self._buckets       ) * self._capacity_factor / 2
					return len(self       ) < limit
		def 	_lowerCamelCase							(						self				,						UpperCamelCase_       )						->       None:
					__lowercase			:  Dict								=       self._buckets
					__lowercase			:  Dict								=       [None] * new_size
					__lowercase			:  Dict								=       0
					for item in old_buckets:
								if item:
											self._add_item(item.key				,						item.val       )
		def 	_lowerCamelCase							(						self       )						->       None:
					self._resize(len(self._buckets       ) * 2       )
		def 	_lowerCamelCase							(						self       )						->       None:
					self._resize(len(self._buckets       ) // 2       )
		def 	_lowerCamelCase							(						self				,						UpperCamelCase_       )						->       Iterator[int]:
					__lowercase			:  Dict								=       self._get_bucket_index(UpperCamelCase_       )
					for _ in range(len(self._buckets       )       ):
								yield ind
								__lowercase			:  Any								=       self._get_next_ind(UpperCamelCase_       )
		def 	_lowerCamelCase							(						self				,						UpperCamelCase_				,						UpperCamelCase_       )						->       None:
					for ind in self._iterate_buckets(UpperCamelCase_       ):
								if self._try_set(UpperCamelCase_				,						UpperCamelCase_				,						UpperCamelCase_       ):
											break
		def __setitem__(						self				,						UpperCamelCase_				,						UpperCamelCase_       )						->       None:
					if self._is_full():
								self._size_up()

					self._add_item(UpperCamelCase_				,						UpperCamelCase_       )
		def __delitem__(						self				,						UpperCamelCase_       )						->       None:
					for ind in self._iterate_buckets(UpperCamelCase_       ):
								__lowercase			:  str								=       self._buckets[ind]
								if item is None:
											raise KeyError(UpperCamelCase_       )
								if item is _deleted:
											continue
								if item.key == key:
											__lowercase			:  Optional[Any]								=       _deleted
											self._len -= 1
											break
					if self._is_sparse():
								self._size_down()
		def __getitem__(						self				,						UpperCamelCase_       )						->       VAL:
					for ind in self._iterate_buckets(UpperCamelCase_       ):
								__lowercase			:  Dict								=       self._buckets[ind]
								if item is None:
											break
								if item is _deleted:
											continue
								if item.key == key:
											return item.val
					raise KeyError(UpperCamelCase_       )
		def __len__(						self       )						->       int:
					return self._len
		def __iter__(						self       )						->       Iterator[KEY]:
					yield from (item.key for item in self._buckets if item)
		def __repr__(						self       )						->       str:
					__lowercase			:  Union[str, Any]								=       ''' ,'''.join(
					    F"""{item.key}: {item.val}""" for item in self._buckets if item       )
					return F"""HashMap({val_string})"""







'''simple docstring'''







from ..utils import DummyObject, requires_backends
class 						UpperCamelCase__       (			metaclass=SCREAMING_SNAKE_CASE_						):



     """simple docstring"""






     __magic_name__           =     ["torch", "torchsde"]







     def __init__(			self   ,						*snake_case__   ,						**snake_case__ ):

            '''simple docstring'''

            requires_backends(self   ,						['torch', 'torchsde'] )







     @classmethod
     def a						(			cls   ,						*snake_case__   ,						**snake_case__ ):

            '''simple docstring'''

            requires_backends(cls   ,						['torch', 'torchsde'] )







     @classmethod
     def a						(			cls   ,						*snake_case__   ,						**snake_case__ ):

            '''simple docstring'''

            requires_backends(cls   ,						['torch', 'torchsde'] )

