from transformers import (
    DPRContextEncoderTokenizer,
    DPRContextEncoderTokenizerFast,
    DPRQuestionEncoderTokenizer,
    DPRQuestionEncoderTokenizerFast,
    DPRReaderOutput,
    DPRReaderTokenizer,
    DPRReaderTokenizerFast,
)
from transformers.testing_utils import require_tokenizers, slow
from transformers.tokenization_utils_base import BatchEncoding

from ..bert.test_tokenization_bert import BertTokenizationTest



@require_tokenizers
class        __snake_case		(  UpperCamelCase__		):
							_a       =				DPRContextEncoderTokenizer
							_a       =				DPRContextEncoderTokenizerFast
							_a       =				True





@require_tokenizers
class        __snake_case		(  UpperCamelCase__		):
							_a       =				DPRQuestionEncoderTokenizer
							_a       =				DPRQuestionEncoderTokenizerFast
							_a       =				True





@require_tokenizers
class        __snake_case		(  UpperCamelCase__		):
							_a       =				DPRReaderTokenizer
							_a       =				DPRReaderTokenizerFast
							_a       =				True




							@slow
							def      UpperCAmelCase__    ( self  : Dict):
									lowerCAmelCase_    :  List[Any]             =				self.tokenizer_class.from_pretrained('''bert-base-uncased''')

									lowerCAmelCase_    :  List[Any]             =				tokenizer.encode('''question sequence'''       ,       add_special_tokens=snake_case_)
									lowerCAmelCase_    :  str             =				tokenizer.encode('''title sequence'''       ,       add_special_tokens=snake_case_)
									lowerCAmelCase_    :  Optional[int]             =				tokenizer.encode('''text sequence ''' * 4       ,       add_special_tokens=snake_case_)
									lowerCAmelCase_    :  List[Any]             =				[[1_0_1] + text_a + [1_0_2] + text_a + [1_0_2] + text_a]
									lowerCAmelCase_    :  Union[str, Any]             =				BatchEncoding({'''input_ids''': input_ids})

									lowerCAmelCase_    :  List[Any]             =				[[0] * len(input_ids[0])]
									lowerCAmelCase_    :  List[Any]             =				[[0] * len(input_ids[0])]
									lowerCAmelCase_    :  List[Any]             =				[0]
									lowerCAmelCase_    :  Optional[Any]             =				DPRReaderOutput(snake_case_       ,       snake_case_       ,       snake_case_)

									lowerCAmelCase_    :  int             =				8, 9
									lowerCAmelCase_    :  Optional[int]             =				1_0
									lowerCAmelCase_    :  Any             =				1_0
									lowerCAmelCase_    :  Optional[Any]             =				tokenizer.decode_best_spans(snake_case_       ,       snake_case_)
									self.assertEqual(predicted_spans[0].start_index       ,       snake_case_)
									self.assertEqual(predicted_spans[0].end_index       ,       snake_case_)
									self.assertEqual(predicted_spans[0].doc_id       ,       0)







							@slow
							def      UpperCAmelCase__    ( self  : Dict):
									lowerCAmelCase_    :  List[str]             =				self.tokenizer_class.from_pretrained('''bert-base-uncased''')

									lowerCAmelCase_    :  Optional[Any]             =				tokenizer.encode('''question sequence'''       ,       add_special_tokens=snake_case_)
									lowerCAmelCase_    :  Dict             =				tokenizer.encode('''title sequence'''       ,       add_special_tokens=snake_case_)
									lowerCAmelCase_    :  str             =				tokenizer.encode('''text sequence'''       ,       add_special_tokens=snake_case_)
									lowerCAmelCase_    :  List[Any]             =				[1_0_1] + text_a + [1_0_2] + text_a + [1_0_2] + text_a
									lowerCAmelCase_    :  Tuple             =				tokenizer(questions=['''question sequence''']       ,       titles=['''title sequence''']       ,       texts=['''text sequence'''])
									self.assertIn('''input_ids'''       ,       snake_case_)
									self.assertIn('''attention_mask'''       ,       snake_case_)
									self.assertListEqual(encoded_input['''input_ids'''][0]       ,       snake_case_)










from __future__ import annotations

from typing import Generic, TypeVar

A__						:						Dict          =      TypeVar('''T''')



class        __snake_case		(  Generic[T]		):




							def __init__( self  : List[Any]       ,       A_  : T):
									lowerCAmelCase_    :  Optional[Any]             =				data  # Assign data
									lowerCAmelCase_    :  Node[T] | None             =				None  # Initialize next as null
									lowerCAmelCase_    :  Node[T] | None             =				None  # Initialize prev as null





class        __snake_case		(  Generic[T]		):




							def __init__( self  : Union[str, Any]):
									lowerCAmelCase_    :  Node[T] | None             =				None




							def      UpperCAmelCase__    ( self  : List[str]       ,       A_  : T):
									if self.head is None:
											lowerCAmelCase_    :  List[Any]             =				Node(A_)
									else:
											lowerCAmelCase_    :  Tuple             =				Node(A_)
											lowerCAmelCase_    :  Optional[int]             =				new_node
											lowerCAmelCase_    :  Optional[int]             =				self.head
											lowerCAmelCase_    :  Optional[Any]             =				None
											lowerCAmelCase_    :  Dict             =				new_node




							def      UpperCAmelCase__    ( self  : List[str]):
									if self.head is None:
											return None
									else:
											assert self.head is not None
											lowerCAmelCase_    :  Tuple             =				self.head.data
											lowerCAmelCase_    :  Any             =				self.head.next
											if self.head is not None:
													lowerCAmelCase_    :  Optional[Any]             =				None
											return temp




							def      UpperCAmelCase__    ( self  : Union[str, Any]):
									return self.head.data if self.head is not None else None




							def __len__( self  : Dict):
									lowerCAmelCase_    :  List[str]             =				self.head
									lowerCAmelCase_    :  str             =				0
									while temp is not None:
											count += 1
											lowerCAmelCase_    :  Union[str, Any]             =				temp.next
									return count




							def      UpperCAmelCase__    ( self  : Dict):
									return self.head is None







							def      UpperCAmelCase__    ( self  : Dict):
									print('''stack elements are:''')
									lowerCAmelCase_    :  Optional[Any]             =				self.head
									while temp is not None:
											print(temp.data       ,       end='''->''')
											lowerCAmelCase_    :  List[str]             =				temp.next


# Code execution starts here
if __name__ == "__main__":
						# Start with the empty stack
						A__						:						Stack[int]          =      Stack()

						# Insert 4 at the beginning. So stack becomes 4->None
						print('''Stack operations using Doubly LinkedList''')
						stack.push(4)

						# Insert 5 at the beginning. So stack becomes 4->5->None
						stack.push(5)

						# Insert 6 at the beginning. So stack becomes 4->5->6->None
						stack.push(6)

						# Insert 7 at the beginning. So stack becomes 4->5->6->7->None
						stack.push(7)

						# Print the stack
						stack.print_stack()

						# Print the top element
						print('''\nTop element is ''', stack.top())

						# Print the stack size
						print('''Size of the stack is ''', len(stack))

						# pop the top element
						stack.pop()

						# pop the top element
						stack.pop()

						# two elements have now been popped off
						stack.print_stack()

						# Print True if the stack is empty else False
						print('''\nstack is empty:''', stack.is_empty())





