# Path: init2winit/utils.py
# class TrainingDivergedError(Exception):
# class _MetricsLeafState:
# class TrainingMetricsGrabber:
# class MetricLogger(object):
# def dtype_from_str(dtype_string):
# def timed(f):
#   def wrapper(*args, **kwargs):
# def set_up_loggers(train_dir, xm_work_unit=None):
# def get_summary_tree(training_metrics_grabber):
#   def _reduce_node(node):
# def _update_param_stats(leaf_state, param_gradient, update, new_param, config):
# def _validate_config(config):
#   def create(model_params, config):
#     def _node_init(x):
#   def update(self, model_gradient, old_params, new_params):
#   def state_dict(self):
#   def restore_state(self, state, state_dict):
# def run_in_parallel(function, list_of_kwargs_to_function, num_workers):
# def should_eval(global_step, eval_frequency, eval_steps):
# def add_log_file(logfile):
# def load_pytrees(pytree_path):
#   def __init__(self,
#                csv_path='',
#                json_path='',
#                pytree_path='',
#                events_dir=None,
#                **logger_kwargs):
#   def append_scalar_metrics(self, metrics):
#   def write_pytree(self, pytree):
#   def append_pytree(self, pytree):
#   def append_json_object(self, json_obj):
# def _summary_str(param):
# def log_pytree_shape_and_statistics(pytree, json_path=None):
# 
# Path: init2winit/model_lib/base_model.py
# def _evaluate_batch(flax_module, params, batch_stats, batch, metrics_bundle,
#                     apply_one_hot_in_loss):
# def _predict_batch(flax_module,
#                    params,
#                    batch_stats,
#                    batch,
#                    output_activation_fn=None):
#   def __init__(self, hps, dataset_meta_data, loss_name, metrics_name):
#   def evaluate_batch(self, params, batch_stats, batch):
#   def predict_batch(self,
#                     params,
#                     batch_stats,
#                     batch,
#                     apply_output_activation_fn=False):
#   def training_cost(self, params, batch, batch_stats=None, dropout_rng=None):
#   def get_fake_batch(self, hps):
#   def build_flax_module(self):
# class BaseModel(object):
# 
# Path: init2winit/model_lib/model_utils.py
# ACTIVATIONS = {
#     'relu': jax.nn.relu,
#     'id': lambda x: x,
#     'tanh': jnp.tanh,
#     'sigmoid': jax.nn.sigmoid,
#     'silu': jax.nn.silu,
#     'leaky_relu': jax.nn.leaky_relu,
# }
# INITIALIZERS = {
#     'delta_orthogonal': initializers.delta_orthogonal,
#     'orthogonal': initializers.orthogonal,
#     'lecun_normal': lecun_normal,
#     'xavier_uniform': initializers.xavier_uniform,
# }
# class ScalarMultiply(nn.Module):
#   def __call__(self, x):
# def get_normalizer(normalizer,
#                    train,
#                    batch_size=None,
#                    virtual_batch_size=None,
#                    total_batch_size=None,
#                    dtype=jnp.float32,
#                    data_format='NHWC'):
#     def identity_wrapper(*args, **kwargs):
#       def identity(x, *args, **kwargs):
# def apply_label_smoothing(one_hot_targets, label_smoothing):
# def sync_batchnorm_stats(state):
# def cross_device_avg(pytree):
# def l2_regularization(params, l2_decay_rank_threshold):
# def flatten_dict(nested_dict, sep='/'):
# def rescale_layers(params, layer_rescale_factors):


from typing import Any, Optional
from flax import linen as nn
from init2winit import utils
from init2winit.model_lib import base_model
from init2winit.model_lib import model_utils
from jax import lax
from ml_collections.config_dict import config_dict
import jax
import jax.numpy as jnp
import numpy as np
  decode: bool = False

  @nn.compact
  def __call__(self,
               inputs,
               train,
               decoder_mask=None,
               encoder_decoder_mask=None,
               inputs_positions=None,
               inputs_segmentation=None):
    """Applies Transformer1DBlock module.

    Args:
      inputs: input data
      train: bool: if model is training.
      decoder_mask: decoder self-attention mask.
      encoder_decoder_mask: encoder-decoder attention mask.
      inputs_positions: input subsequence positions for packed examples.
      inputs_segmentation: input segmentation info for packed examples.

    Returns:
      output after transformer block.

    """

    # Attention block.
    assert inputs.ndim == 3
    if self.normalizer in [
        'batch_norm', 'layer_norm', 'pre_layer_norm', 'none'
    ]:

# Path: init2winit/utils.py
# class TrainingDivergedError(Exception):
# class _MetricsLeafState:
# class TrainingMetricsGrabber:
# class MetricLogger(object):
# def dtype_from_str(dtype_string):
# def timed(f):
#   def wrapper(*args, **kwargs):
# def set_up_loggers(train_dir, xm_work_unit=None):
# def get_summary_tree(training_metrics_grabber):
#   def _reduce_node(node):
# def _update_param_stats(leaf_state, param_gradient, update, new_param, config):
# def _validate_config(config):
#   def create(model_params, config):
#     def _node_init(x):
#   def update(self, model_gradient, old_params, new_params):
#   def state_dict(self):
#   def restore_state(self, state, state_dict):
# def run_in_parallel(function, list_of_kwargs_to_function, num_workers):
# def should_eval(global_step, eval_frequency, eval_steps):
# def add_log_file(logfile):
# def load_pytrees(pytree_path):
#   def __init__(self,
#                csv_path='',
#                json_path='',
#                pytree_path='',
#                events_dir=None,
#                **logger_kwargs):
#   def append_scalar_metrics(self, metrics):
#   def write_pytree(self, pytree):
#   def append_pytree(self, pytree):
#   def append_json_object(self, json_obj):
# def _summary_str(param):
# def log_pytree_shape_and_statistics(pytree, json_path=None):
# 
# Path: init2winit/model_lib/base_model.py
# def _evaluate_batch(flax_module, params, batch_stats, batch, metrics_bundle,
#                     apply_one_hot_in_loss):
# def _predict_batch(flax_module,
#                    params,
#                    batch_stats,
#                    batch,
#                    output_activation_fn=None):
#   def __init__(self, hps, dataset_meta_data, loss_name, metrics_name):
#   def evaluate_batch(self, params, batch_stats, batch):
#   def predict_batch(self,
#                     params,
#                     batch_stats,
#                     batch,
#                     apply_output_activation_fn=False):
#   def training_cost(self, params, batch, batch_stats=None, dropout_rng=None):
#   def get_fake_batch(self, hps):
#   def build_flax_module(self):
# class BaseModel(object):
# 
# Path: init2winit/model_lib/model_utils.py
# ACTIVATIONS = {
#     'relu': jax.nn.relu,
#     'id': lambda x: x,
#     'tanh': jnp.tanh,
#     'sigmoid': jax.nn.sigmoid,
#     'silu': jax.nn.silu,
#     'leaky_relu': jax.nn.leaky_relu,
# }
# INITIALIZERS = {
#     'delta_orthogonal': initializers.delta_orthogonal,
#     'orthogonal': initializers.orthogonal,
#     'lecun_normal': lecun_normal,
#     'xavier_uniform': initializers.xavier_uniform,
# }
# class ScalarMultiply(nn.Module):
#   def __call__(self, x):
# def get_normalizer(normalizer,
#                    train,
#                    batch_size=None,
#                    virtual_batch_size=None,
#                    total_batch_size=None,
#                    dtype=jnp.float32,
#                    data_format='NHWC'):
#     def identity_wrapper(*args, **kwargs):
#       def identity(x, *args, **kwargs):
# def apply_label_smoothing(one_hot_targets, label_smoothing):
# def sync_batchnorm_stats(state):
# def cross_device_avg(pytree):
# def l2_regularization(params, l2_decay_rank_threshold):
# def flatten_dict(nested_dict, sep='/'):
# def rescale_layers(params, layer_rescale_factors):


# Path: init2winit/model_lib/transformer_lm.py
from typing import Any, Optional
from flax import linen as nn
from init2winit import utils
from init2winit.model_lib import base_model
from init2winit.model_lib import model_utils
from jax import lax
from ml_collections.config_dict import config_dict
import jax
import jax.numpy as jnp
import numpy as np

  decode: bool = False

  @nn.compact
  def __call__(self,
               inputs,
               train,
               decoder_mask=None,
               encoder_decoder_mask=None,
               inputs_positions=None,
               inputs_segmentation=None):
    """Applies Transformer1DBlock module.

    Args:
      inputs: input data
      train: bool: if model is training.
      decoder_mask: decoder self-attention mask.
      encoder_decoder_mask: encoder-decoder attention mask.
      inputs_positions: input subsequence positions for packed examples.
      inputs_segmentation: input segmentation info for packed examples.

    Returns:
      output after transformer block.

    """

    # Attention block.
    assert inputs.ndim == 3
    if self.normalizer in [
        'batch_norm', 'layer_norm', 'pre_layer_norm', 'none'
    ]:

      maybe_pre_normalize = model_utils.get_normalizer(