



'''simple docstring'''





from __future__ import absolute_import, division, print_function, unicode_literals

from torch import nn
from torch.nn import CrossEntropyLoss, MSELoss

from transformers import RobertaConfig
from transformers.file_utils import add_start_docstrings, add_start_docstrings_to_model_forward
from transformers.models.roberta.modeling_roberta import (
    ROBERTA_INPUTS_DOCSTRING,
    ROBERTA_START_DOCSTRING,
    RobertaEmbeddings,
)

from .modeling_highway_bert import BertPreTrainedModel, DeeBertModel, HighwayException, entropy






@add_start_docstrings(
    '''The RoBERTa Model transformer with early exiting (DeeRoBERTa). '''						,			SCREAMING_SNAKE_CASE_						,			)
class 	lowerCAmelCase_(    SCREAMING_SNAKE_CASE_					):
  '''simple docstring'''




  __lowercase							:				int           =				RobertaConfig
  __lowercase							:				Optional[Any]           =				'''roberta'''




  def __init__(   self  ,__UpperCAmelCase				)   ->		int:
      super().__init__(__UpperCAmelCase				)

      lowerCAmelCase__			:  List[str]											= RobertaEmbeddings(__UpperCAmelCase				)
      self.init_weights()







@add_start_docstrings(
    '''RoBERTa Model (with early exiting - DeeRoBERTa) with a classifier on top,
    also takes care of multi-layer training. '''						,			SCREAMING_SNAKE_CASE_						,			)
class 	lowerCAmelCase_(    SCREAMING_SNAKE_CASE_					):
  '''simple docstring'''




  __lowercase							:				Union[str, Any]           =				RobertaConfig
  __lowercase							:				Optional[int]           =				'''roberta'''




  def __init__(   self  ,__UpperCAmelCase				)   ->		Optional[int]:
      super().__init__(__UpperCAmelCase				)
      lowerCAmelCase__			:  List[str]											= config.num_labels
      lowerCAmelCase__			:  Dict											= config.num_hidden_layers

      lowerCAmelCase__			:  str											= DeeRobertaModel(__UpperCAmelCase				)
      lowerCAmelCase__			:  Tuple											= nn.Dropout(config.hidden_dropout_prob				)
      lowerCAmelCase__			:  List[str]											= nn.Linear(config.hidden_size  ,self.config.num_labels				)






  @add_start_docstrings_to_model_forward(__UpperCAmelCase				)
  def 							UpperCAmelCase_     (   self  ,__UpperCAmelCase=None  ,__UpperCAmelCase=None  ,__UpperCAmelCase=None  ,__UpperCAmelCase=None  ,__UpperCAmelCase=None  ,__UpperCAmelCase=None  ,__UpperCAmelCase=None  ,__UpperCAmelCase=-1  ,__UpperCAmelCase=False  ,)   ->		int:
      lowerCAmelCase__			:  Union[str, Any]											= self.num_layers
      try:
          lowerCAmelCase__			:  Union[str, Any]											= self.roberta(
              __UpperCAmelCase  ,attention_mask=__UpperCAmelCase  ,token_type_ids=__UpperCAmelCase  ,position_ids=__UpperCAmelCase  ,head_mask=__UpperCAmelCase  ,inputs_embeds=__UpperCAmelCase  ,)

          lowerCAmelCase__			:  str											= outputs[1]

          lowerCAmelCase__			:  Tuple											= self.dropout(__UpperCAmelCase				)
          lowerCAmelCase__			:  Dict											= self.classifier(__UpperCAmelCase				)
          lowerCAmelCase__			:  int											= (logits,) + outputs[2:]  # add hidden states and attention if they are here
      except HighwayException as e:
          lowerCAmelCase__			:  Any											= e.message
          lowerCAmelCase__			:  List[Any]											= e.exit_layer
          lowerCAmelCase__			:  Any											= outputs[0]

      if not self.training:
          lowerCAmelCase__			:  Tuple											= entropy(__UpperCAmelCase				)
          lowerCAmelCase__			:  Optional[int]											= []
          lowerCAmelCase__			:  List[Any]											= []
      if labels is not None:
          if self.num_labels == 1:
              #  We are doing regression
              lowerCAmelCase__			:  int											= MSELoss()
              lowerCAmelCase__			:  Optional[int]											= loss_fct(logits.view(-1				)  ,labels.view(-1				)				)
          else:
              lowerCAmelCase__			:  List[str]											= CrossEntropyLoss()
              lowerCAmelCase__			:  str											= loss_fct(logits.view(-1  ,self.num_labels				)  ,labels.view(-1				)				)

          # work with highway exits
          lowerCAmelCase__			:  Tuple											= []
          for highway_exit in outputs[-1]:
              lowerCAmelCase__			:  Any											= highway_exit[0]
              if not self.training:
                  highway_logits_all.append(__UpperCAmelCase				)
                  highway_entropy.append(highway_exit[2]				)
              if self.num_labels == 1:
                  #  We are doing regression
                  lowerCAmelCase__			:  List[Any]											= MSELoss()
                  lowerCAmelCase__			:  Any											= loss_fct(highway_logits.view(-1				)  ,labels.view(-1				)				)
              else:
                  lowerCAmelCase__			:  Any											= CrossEntropyLoss()
                  lowerCAmelCase__			:  List[str]											= loss_fct(highway_logits.view(-1  ,self.num_labels				)  ,labels.view(-1				)				)
              highway_losses.append(__UpperCAmelCase				)

          if train_highway:
              lowerCAmelCase__			:  Optional[int]											= (sum(highway_losses[:-1]				),) + outputs
              # exclude the final highway, of course
          else:
              lowerCAmelCase__			:  Tuple											= (loss,) + outputs
      if not self.training:
          lowerCAmelCase__			:  Any											= outputs + ((original_entropy, highway_entropy), exit_layer)
          if output_layer >= 0:
              lowerCAmelCase__			:  Tuple											= (
                  (outputs[0],) + (highway_logits_all[output_layer],) + outputs[2:]
              )  # use the highway of the last layer

      return outputs  # (loss), logits, (hidden_states), (attentions), entropy







'''simple docstring'''





from typing import Any






class 	lowerCAmelCase_:
  '''simple docstring'''




  def __init__(   self  ,__UpperCAmelCase				)   ->		Any:
      lowerCAmelCase__			:  Optional[Any]											= data
      lowerCAmelCase__			:  str											= None






  def __repr__(   self				)   ->		str:
      return F"""Node({self.data})"""







class 	lowerCAmelCase_:
  '''simple docstring'''




  def __init__(   self				)   ->		List[Any]:
      lowerCAmelCase__			:  List[str]											= None




  def __iter__(   self				)   ->		Any:
      lowerCAmelCase__			:  int											= self.head
      while node:
          yield node.data
          lowerCAmelCase__			:  Optional[Any]											= node.next




  def __len__(   self				)   ->		int:
      return sum(1 for _ in self				)




  def __repr__(   self				)   ->		str:
      return "->".join([str(__UpperCAmelCase				) for item in self]				)




  def __getitem__(   self  ,__UpperCAmelCase				)   ->		Any:
      if not 0 <= index < len(self				):
          raise ValueError("""list index out of range."""				)
      for i, node in enumerate(self				):
          if i == index:
              return node
      return None




  def __setitem__(   self  ,__UpperCAmelCase  ,__UpperCAmelCase				)   ->		None:
      if not 0 <= index < len(self				):
          raise ValueError("""list index out of range."""				)
      lowerCAmelCase__			:  List[Any]											= self.head
      for _ in range(__UpperCAmelCase				):
          lowerCAmelCase__			:  List[str]											= current.next
      lowerCAmelCase__			:  Dict											= data




  def 							UpperCAmelCase_     (   self  ,__UpperCAmelCase				)   ->		None:
      self.insert_nth(len(self				)  ,__UpperCAmelCase				)




  def 							UpperCAmelCase_     (   self  ,__UpperCAmelCase				)   ->		None:
      self.insert_nth(0  ,__UpperCAmelCase				)




  def 							UpperCAmelCase_     (   self  ,__UpperCAmelCase  ,__UpperCAmelCase				)   ->		None:
      if not 0 <= index <= len(self				):
          raise IndexError("""list index out of range"""				)
      lowerCAmelCase__			:  str											= Node(__UpperCAmelCase				)
      if self.head is None:
          lowerCAmelCase__			:  List[Any]											= new_node
      elif index == 0:
          lowerCAmelCase__			:  Dict											= self.head  # link new_node to head
          lowerCAmelCase__			:  int											= new_node
      else:
          lowerCAmelCase__			:  Any											= self.head
          for _ in range(index - 1				):
              lowerCAmelCase__			:  Tuple											= temp.next
          lowerCAmelCase__			:  str											= temp.next
          lowerCAmelCase__			:  Optional[int]											= new_node




  def 							UpperCAmelCase_     (   self				)   ->		None:  # print every node data
      print(self				)




  def 							UpperCAmelCase_     (   self				)   ->		Any:
      return self.delete_nth(0				)




  def 							UpperCAmelCase_     (   self				)   ->		Any:  # delete from tail
      return self.delete_nth(len(self				) - 1				)




  def 							UpperCAmelCase_     (   self  ,__UpperCAmelCase = 0				)   ->		Any:
      if not 0 <= index <= len(self				) - 1:  # test if index is valid
          raise IndexError("""List index out of range."""				)
      lowerCAmelCase__			:  List[Any]											= self.head  # default first node
      if index == 0:
          lowerCAmelCase__			:  str											= self.head.next
      else:
          lowerCAmelCase__			:  int											= self.head
          for _ in range(index - 1				):
              lowerCAmelCase__			:  Union[str, Any]											= temp.next
          lowerCAmelCase__			:  Optional[Any]											= temp.next
          lowerCAmelCase__			:  Any											= temp.next.next
      return delete_node.data




  def 							UpperCAmelCase_     (   self				)   ->		bool:
      return self.head is None






  def 							UpperCAmelCase_     (   self				)   ->		None:
      lowerCAmelCase__			:  Optional[int]											= None
      lowerCAmelCase__			:  str											= self.head

      while current:
          # Store the current node's next node.
          lowerCAmelCase__			:  Optional[Any]											= current.next
          # Make the current node's next point backwards
          lowerCAmelCase__			:  Optional[int]											= prev
          # Make the previous node be the current node
          lowerCAmelCase__			:  Optional[Any]											= current
          # Make the current node the next node (to progress iteration)
          lowerCAmelCase__			:  Optional[int]											= next_node
      # Return prev in order to put the head at the end
      lowerCAmelCase__			:  List[str]											= prev







def        _SCREAMING_SNAKE_CASE  (	):



    """simple docstring"""





    lowerCAmelCase__			:  Dict											= LinkedList()
    assert linked_list.is_empty() is True
    assert str(UpperCamelCase      ) == ""

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

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

    for i in range(10      ):
        assert len(UpperCamelCase      ) == i
        linked_list.insert_nth(UpperCamelCase							,   i + 1      )
    assert str(UpperCamelCase      ) == "->".join(str(UpperCamelCase      ) for i in range(1							,   11      )      )

    linked_list.insert_head(0      )
    linked_list.insert_tail(11      )
    assert str(UpperCamelCase      ) == "->".join(str(UpperCamelCase      ) for i in range(0							,   12      )      )

    assert linked_list.delete_head() == 0
    assert linked_list.delete_nth(9      ) == 10
    assert linked_list.delete_tail() == 11
    assert len(UpperCamelCase      ) == 9
    assert str(UpperCamelCase      ) == "->".join(str(UpperCamelCase      ) for i in range(1							,   10      )      )

    assert all(linked_list[i] == i + 1 for i in range(0							,   9      )      ) is True

    for i in range(0							,   9      ):
        lowerCAmelCase__			:  str											= -i
    assert all(linked_list[i] == -i for i in range(0							,   9      )      ) is True

    linked_list.reverse()
    assert str(UpperCamelCase      ) == "->".join(str(UpperCamelCase      ) for i in range(-8							,   1      )      )
def        _SCREAMING_SNAKE_CASE  (	):



    """simple docstring"""





    lowerCAmelCase__			:  Any											= [
        -9,
        100,
        Node(77345112      ),
        """dlrow olleH""",
        7,
        5555,
        0,
        -192.5_5555,
        """Hello, world!""",
        77.9,
        Node(10      ),
        None,
        None,
        12.20,
    ]
    lowerCAmelCase__			:  List[Any]											= LinkedList()

    for i in test_input:
        linked_list.insert_tail(UpperCamelCase      )

    # Check if it's empty or not
    assert linked_list.is_empty() is False
    assert (
        str(UpperCamelCase      ) == "-9->100->Node(77345112)->dlrow olleH->7->5555->0->"
        "-192.55555->Hello, world!->77.9->Node(10)->None->None->12.2"
    )

    # Delete the head
    lowerCAmelCase__			:  List[str]											= linked_list.delete_head()
    assert result == -9
    assert (
        str(UpperCamelCase      ) == "100->Node(77345112)->dlrow olleH->7->5555->0->-192.55555->"
        "Hello, world!->77.9->Node(10)->None->None->12.2"
    )

    # Delete the tail
    lowerCAmelCase__			:  Union[str, Any]											= linked_list.delete_tail()
    assert result == 12.2
    assert (
        str(UpperCamelCase      ) == "100->Node(77345112)->dlrow olleH->7->5555->0->-192.55555->"
        "Hello, world!->77.9->Node(10)->None->None"
    )

    # Delete a node in specific location in linked list
    lowerCAmelCase__			:  str											= linked_list.delete_nth(10      )
    assert result is None
    assert (
        str(UpperCamelCase      ) == "100->Node(77345112)->dlrow olleH->7->5555->0->-192.55555->"
        "Hello, world!->77.9->Node(10)->None"
    )

    # Add a Node instance to its head
    linked_list.insert_head(Node("""Hello again, world!"""      )      )
    assert (
        str(UpperCamelCase      )
        == "Node(Hello again, world!)->100->Node(77345112)->dlrow olleH->"
        "7->5555->0->-192.55555->Hello, world!->77.9->Node(10)->None"
    )

    # Add None to its tail
    linked_list.insert_tail(UpperCamelCase      )
    assert (
        str(UpperCamelCase      )
        == "Node(Hello again, world!)->100->Node(77345112)->dlrow olleH->"
        "7->5555->0->-192.55555->Hello, world!->77.9->Node(10)->None->None"
    )

    # Reverse the linked list
    linked_list.reverse()
    assert (
        str(UpperCamelCase      )
        == "None->None->Node(10)->77.9->Hello, world!->-192.55555->0->5555->"
        "7->dlrow olleH->Node(77345112)->100->Node(Hello again, world!)"
    )
def        _SCREAMING_SNAKE_CASE  (	):



    """simple docstring"""





    from doctest import testmod

    testmod()

    lowerCAmelCase__			:  str											= LinkedList()
    linked_list.insert_head(input("""Inserting 1st at head """      ).strip()      )
    linked_list.insert_head(input("""Inserting 2nd at head """      ).strip()      )
    print("""\nPrint list:"""      )
    linked_list.print_list()
    linked_list.insert_tail(input("""\nInserting 1st at tail """      ).strip()      )
    linked_list.insert_tail(input("""Inserting 2nd at tail """      ).strip()      )
    print("""\nPrint list:"""      )
    linked_list.print_list()
    print("""\nDelete head"""      )
    linked_list.delete_head()
    print("""Delete tail"""      )
    linked_list.delete_tail()
    print("""\nPrint list:"""      )
    linked_list.print_list()
    print("""\nReverse linked list"""      )
    linked_list.reverse()
    print("""\nPrint list:"""      )
    linked_list.print_list()
    print("""\nString representation of linked list:"""      )
    print(UpperCamelCase      )
    print("""\nReading/changing Node data using indexing:"""      )
    print(f"""Element at Position 1: {linked_list[1]}"""      )
    lowerCAmelCase__			:  Dict											= input("""Enter New Value: """      ).strip()
    print("""New list:"""      )
    print(UpperCamelCase      )
    print(f"""length of linked_list is : {len(UpperCamelCase      )}"""      )


if __name__ == "__main__":
 main()


