


'''simple docstring'''







from __future__ import annotations

from collections.abc import Iterator
from typing import Any
class 	UpperCamelCase__					:



     """simple docstring"""






     def __init__( self      ,	snake_case__   ):

            '''simple docstring'''

            _lowerCAmelCase    :							Any   			=       data
            _lowerCAmelCase    :							Node | None   			=       None
class 	UpperCamelCase__					:



     """simple docstring"""






     def __init__( self   ):

            '''simple docstring'''

            _lowerCAmelCase    :							int   			=       None
            _lowerCAmelCase    :							Union[str, Any]   			=       None







     def __iter__( self   ):

            '''simple docstring'''

            _lowerCAmelCase    :							Union[str, Any]   			=       self.head
            while self.head:
                   yield node.data
                   _lowerCAmelCase    :							Tuple   			=       node.next
                   if node == self.head:
                          break







     def __len__( self   ):

            '''simple docstring'''

            return sum(1 for _ in self   )







     def __repr__( self   ):

            '''simple docstring'''

            return "->".join(str(snake_case__   ) for item in iter(self   )   )







     def a	( self      ,	snake_case__   ):

            '''simple docstring'''

            self.insert_nth(len(self   )      ,	snake_case__   )







     def a	( self      ,	snake_case__   ):

            '''simple docstring'''

            self.insert_nth(0      ,	snake_case__   )







     def a	( self      ,	snake_case__      ,	snake_case__   ):

            '''simple docstring'''

            if index < 0 or index > len(self   ):
                   raise IndexError('list index out of range.'   )
            _lowerCAmelCase    :							Union[str, Any]   			=       Node(snake_case__   )
            if self.head is None:
                   _lowerCAmelCase    :							Tuple   			=       new_node  # first node points itself
                   _lowerCAmelCase    :							Any   			=       new_node
            elif index == 0:  # insert at head
                   _lowerCAmelCase    :							List[str]   			=       self.head
                   _lowerCAmelCase    :							Any   			=       new_node
            else:
                   _lowerCAmelCase    :							Optional[int]   			=       self.head
                   for _ in range(index - 1   ):
                          _lowerCAmelCase    :							Union[str, Any]   			=       temp.next
                   _lowerCAmelCase    :							Union[str, Any]   			=       temp.next
                   _lowerCAmelCase    :							Any   			=       new_node
                   if index == len(self   ) - 1:  # insert at tail
                          _lowerCAmelCase    :							Tuple   			=       new_node







     def a	( self   ):

            '''simple docstring'''

            return self.delete_nth(0   )







     def a	( self   ):

            '''simple docstring'''

            return self.delete_nth(len(self   ) - 1   )







     def a	( self      ,	snake_case__ = 0   ):

            '''simple docstring'''

            if not 0 <= index < len(self   ):
                   raise IndexError('list index out of range.'   )
            _lowerCAmelCase    :							Union[str, Any]   			=       self.head
            if self.head == self.tail:  # just one node
                   _lowerCAmelCase    :							str   			=       None
            elif index == 0:  # delete head node
                   _lowerCAmelCase    :							int   			=       self.tail.next.next
                   _lowerCAmelCase    :							Optional[Any]   			=       self.head.next
            else:
                   _lowerCAmelCase    :							List[Any]   			=       self.head
                   for _ in range(index - 1   ):
                          _lowerCAmelCase    :							Any   			=       temp.next
                   _lowerCAmelCase    :							int   			=       temp.next
                   _lowerCAmelCase    :							int   			=       temp.next.next
                   if index == len(self   ) - 1:  # delete at tail
                          _lowerCAmelCase    :							str   			=       temp
            return delete_node.data







     def a	( self   ):

            '''simple docstring'''

            return len(self   ) == 0






def 			lowercase				():







       """simple docstring"""







       _lowerCAmelCase    :							str   			=       CircularLinkedList()
       assert len(_A					) == 0
       assert circular_linked_list.is_empty() is True
       assert str(_A					) == ""

       try:
              circular_linked_list.delete_front()
              raise AssertionError  # This should not happen
       except IndexError:
              assert True  # This should happen

       try:
              circular_linked_list.delete_tail()
              raise AssertionError  # This should not happen
       except IndexError:
              assert True  # This should happen

       try:
              circular_linked_list.delete_nth(-1					)
              raise AssertionError
       except IndexError:
              assert True

       try:
              circular_linked_list.delete_nth(0					)
              raise AssertionError
       except IndexError:
              assert True

       assert circular_linked_list.is_empty() is True
       for i in range(5					):
              assert len(_A					) == i
              circular_linked_list.insert_nth(_A   ,						i + 1					)
       assert str(_A					) == "->".join(str(_A					) for i in range(1   ,						6					)					)

       circular_linked_list.insert_tail(6					)
       assert str(_A					) == "->".join(str(_A					) for i in range(1   ,						7					)					)
       circular_linked_list.insert_head(0					)
       assert str(_A					) == "->".join(str(_A					) for i in range(0   ,						7					)					)

       assert circular_linked_list.delete_front() == 0
       assert circular_linked_list.delete_tail() == 6
       assert str(_A					) == "->".join(str(_A					) for i in range(1   ,						6					)					)
       assert circular_linked_list.delete_nth(2					) == 3

       circular_linked_list.insert_nth(2   ,						3					)
       assert str(_A					) == "->".join(str(_A					) for i in range(1   ,						6					)					)

       assert circular_linked_list.is_empty() is False


if __name__ == "__main__":
       import doctest

       doctest.testmod()





'''simple docstring'''







import os
from typing import Dict, List, Union

import tensorflow as tf
from keras_nlp.tokenizers import BytePairTokenizer
from tensorflow_text import pad_model_inputs

from .tokenization_gpta import GPTaTokenizer
class 	UpperCamelCase__					( tf.keras.layers.Layer	):



     """simple docstring"""






     def __init__( self      ,	snake_case__      ,	snake_case__      ,	snake_case__ = None      ,	snake_case__ = None   ):

            '''simple docstring'''

            super().__init__()
            _lowerCAmelCase    :							Union[str, Any]   			=       pad_token_id
            _lowerCAmelCase    :							List[Any]   			=       max_length
            _lowerCAmelCase    :							Tuple   			=       vocab
            _lowerCAmelCase    :							str   			=       merges
            _lowerCAmelCase    :							List[str]   			=       BytePairTokenizer(snake_case__      ,	snake_case__      ,	sequence_length=snake_case__   )







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

            '''simple docstring'''

            _lowerCAmelCase    :							Dict   			=       [' '.join(snake_case__   ) for m in tokenizer.bpe_ranks.keys()]
            _lowerCAmelCase    :							Any   			=       tokenizer.get_vocab()
            return cls(snake_case__      ,	snake_case__      ,	*snake_case__      ,	**snake_case__   )







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

            '''simple docstring'''

            _lowerCAmelCase    :							List[Any]   			=       GPTaTokenizer.from_pretrained(snake_case__      ,	*snake_case__      ,	**snake_case__   )
            return cls.from_tokenizer(snake_case__      ,	*snake_case__      ,	**snake_case__   )







     @classmethod
     def a	( cls      ,	snake_case__   ):

            '''simple docstring'''

            return cls(**snake_case__   )







     def a	( self   ):

            '''simple docstring'''

            return {
                "vocab": self.vocab,
                "merges": self.merges,
                "max_length": self.max_length,
                "pad_token_id": self.pad_token_id,
            }







     def a	( self      ,	snake_case__      ,	snake_case__ = None   ):

            '''simple docstring'''

            _lowerCAmelCase    :							str   			=       self.tf_tokenizer(snake_case__   )
            _lowerCAmelCase    :							str   			=       tf.ones_like(snake_case__   )

            if self.pad_token_id is not None:
                   # pad the tokens up to max length
                   _lowerCAmelCase    :							Optional[int]   			=       max_length if max_length is not None else self.max_length

                   if max_length is not None:
                          _lowerCAmelCase			,     _lowerCAmelCase    :							str   			=       pad_model_inputs(
                              snake_case__      ,	max_seq_length=snake_case__      ,	pad_value=self.pad_token_id   )

            return {"attention_mask": attention_mask, "input_ids": input_ids}

