'''simple docstring'''
from typing import TYPE_CHECKING

from ...utils import (
    OptionalDependencyNotAvailable,
    _LazyModule,
    is_flax_available,
    is_tf_available,
    is_torch_available,
)


a=  {'''configuration_encoder_decoder''': ['''EncoderDecoderConfig''']}

try:
  if not is_torch_available():
    raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
  pass
else:
  a=  ['''EncoderDecoderModel''']

try:
  if not is_tf_available():
    raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
  pass
else:
  a=  ['''TFEncoderDecoderModel''']

try:
  if not is_flax_available():
    raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
  pass
else:
  a=  ['''FlaxEncoderDecoderModel''']

if TYPE_CHECKING:
  from .configuration_encoder_decoder import EncoderDecoderConfig

  try:
    if not is_torch_available():
      raise OptionalDependencyNotAvailable()
  except OptionalDependencyNotAvailable:
    pass
  else:
    from .modeling_encoder_decoder import EncoderDecoderModel

  try:
    if not is_tf_available():
      raise OptionalDependencyNotAvailable()
  except OptionalDependencyNotAvailable:
    pass
  else:
    from .modeling_tf_encoder_decoder import TFEncoderDecoderModel

  try:
    if not is_flax_available():
      raise OptionalDependencyNotAvailable()
  except OptionalDependencyNotAvailable:
    pass
  else:
    from .modeling_flax_encoder_decoder import FlaxEncoderDecoderModel

else:
  import sys

  a=  _LazyModule(__name__, globals()['''__file__'''], _import_structure, module_spec=__spec__)




'''simple docstring'''
import warnings

from ...configuration_utils import PretrainedConfig
from ...utils import logging


a=  logging.get_logger(__name__)

a=  {
    '''xlnet-base-cased''': '''https://huggingface.co/xlnet-base-cased/resolve/main/config.json''',
    '''xlnet-large-cased''': '''https://huggingface.co/xlnet-large-cased/resolve/main/config.json''',
}






class 			__lowercase		(						_lowerCamelCase						):







     """simple docstring"""






     SCREAMING_SNAKE_CASE__		   =						'''xlnet'''
     SCREAMING_SNAKE_CASE__		   =						['''mems''']
     SCREAMING_SNAKE_CASE__		   =						{
         '''n_token''': '''vocab_size''',  # Backward compatibility
         '''hidden_size''': '''d_model''',
         '''num_attention_heads''': '''n_head''',
         '''num_hidden_layers''': '''n_layer''',
     }







     def __init__(		self     ,			_lowerCamelCase=3_2_0_0_0     ,			_lowerCamelCase=1_0_2_4     ,			_lowerCamelCase=2_4     ,			_lowerCamelCase=1_6     ,			_lowerCamelCase=4_0_9_6     ,			_lowerCamelCase="gelu"     ,			_lowerCamelCase=True     ,			_lowerCamelCase="bi"     ,			_lowerCamelCase=0.0_2     ,			_lowerCamelCase=1E-1_2     ,			_lowerCamelCase=0.1     ,			_lowerCamelCase=5_1_2     ,			_lowerCamelCase=None     ,			_lowerCamelCase=True     ,			_lowerCamelCase=False     ,			_lowerCamelCase=False     ,			_lowerCamelCase=-1     ,			_lowerCamelCase=False     ,			_lowerCamelCase="last"     ,			_lowerCamelCase=True     ,			_lowerCamelCase="tanh"     ,			_lowerCamelCase=0.1     ,			_lowerCamelCase=5     ,			_lowerCamelCase=5     ,			_lowerCamelCase=5     ,			_lowerCamelCase=1     ,			_lowerCamelCase=2     ,			**_lowerCamelCase     ,			):
         __UpperCamelCase	:	List[str]		    =  vocab_size
         __UpperCamelCase	:	List[Any]		    =  d_model
         __UpperCamelCase	:	List[str]		    =  n_layer
         __UpperCamelCase	:	Optional[Any]		    =  n_head
         if d_model % n_head != 0:
             raise ValueError(f"""'d_model % n_head' ({d_model % n_head}) should be equal to 0"""    )
         if "d_head" in kwargs:
             if kwargs["d_head"] != d_model // n_head:
                 raise ValueError(
                     f"""`d_head` ({kwargs['d_head']}) should be equal to `d_model // n_head` ({d_model // n_head})"""    )
         __UpperCamelCase	:	str		    =  d_model // n_head
         __UpperCamelCase	:	Union[str, Any]		    =  ff_activation
         __UpperCamelCase	:	str		    =  d_inner
         __UpperCamelCase	:	Any		    =  untie_r
         __UpperCamelCase	:	List[Any]		    =  attn_type

         __UpperCamelCase	:	str		    =  initializer_range
         __UpperCamelCase	:	Optional[int]		    =  layer_norm_eps

         __UpperCamelCase	:	Union[str, Any]		    =  dropout
         __UpperCamelCase	:	List[str]		    =  mem_len
         __UpperCamelCase	:	Optional[int]		    =  reuse_len
         __UpperCamelCase	:	str		    =  bi_data
         __UpperCamelCase	:	Tuple		    =  clamp_len
         __UpperCamelCase	:	List[Any]		    =  same_length

         __UpperCamelCase	:	Optional[Any]		    =  summary_type
         __UpperCamelCase	:	List[str]		    =  summary_use_proj
         __UpperCamelCase	:	Union[str, Any]		    =  summary_activation
         __UpperCamelCase	:	str		    =  summary_last_dropout
         __UpperCamelCase	:	Union[str, Any]		    =  start_n_top
         __UpperCamelCase	:	str		    =  end_n_top

         __UpperCamelCase	:	Optional[int]		    =  bos_token_id
         __UpperCamelCase	:	Optional[Any]		    =  pad_token_id
         __UpperCamelCase	:	List[Any]		    =  eos_token_id

         if "use_cache" in kwargs:
             warnings.warn(
                 'The `use_cache` argument is deprecated and will be removed in a future version, use `use_mems_eval`'
                 ' instead.'     ,			_lowerCamelCase     ,			)
             __UpperCamelCase	:	Optional[int]		    =  kwargs['use_cache']

         __UpperCamelCase	:	Optional[int]		    =  use_mems_eval
         __UpperCamelCase	:	Tuple		    =  use_mems_train
         super().__init__(pad_token_id=_lowerCamelCase     ,			bos_token_id=_lowerCamelCase     ,			eos_token_id=_lowerCamelCase     ,			**_lowerCamelCase    )







     @property
     def lowerCAmelCase     (		self    ):
         logger.info(f"""The model {self.model_type} is one of the few models that has no sequence length limit."""    )
         return -1







     @max_position_embeddings.setter
     def lowerCAmelCase     (		self     ,			_lowerCamelCase    ):
         # Message copied from Transformer-XL documentation
         raise NotImplementedError(
             f"""The model {self.model_type} is one of the few models that has no sequence length limit."""    )



