310 lines
11 KiB
Python
310 lines
11 KiB
Python
from typing import Tuple, List, Dict, Union, Callable, Any
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from paddle import nn
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from ppcls.utils import logger
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class Identity(nn.Layer):
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def __init__(self):
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super(Identity, self).__init__()
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def forward(self, inputs):
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return inputs
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class TheseusLayer(nn.Layer):
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def __init__(self, *args, **kwargs):
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super(TheseusLayer, self).__init__()
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self.res_dict = {}
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self.res_name = self.full_name()
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self.pruner = None
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self.quanter = None
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def _return_dict_hook(self, layer, input, output):
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res_dict = {"output": output}
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# 'list' is needed to avoid error raised by popping self.res_dict
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for res_key in list(self.res_dict):
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res_dict[res_key] = self.res_dict.pop(res_key)
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return res_dict
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def _save_sub_res_hook(self, layer, input, output):
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self.res_dict[self.res_name] = output
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def replace_sub(self, *args, **kwargs) -> None:
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msg = "\"replace_sub\" is deprecated, please use \"layer_wrench\" instead."
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logger.error(DeprecationWarning(msg))
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raise DeprecationWarning(msg)
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# TODO(gaotingquan): what is a good name?
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def layer_wrench(self,
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layer_name_pattern: Union[str, List[str]],
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handle_func: Callable[[nn.Layer, str], nn.Layer]) -> Dict[
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str, nn.Layer]:
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"""use 'handle_func' to modify the sub-layer(s) specified by 'layer_name_pattern'.
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Args:
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layer_name_pattern (Union[str, List[str]]): The name of layer to be modified by 'handle_func'.
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handle_func (Callable[[nn.Layer, str], nn.Layer]): The function to modify target layer specified by 'layer_name_pattern'.
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Returns:
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Dict[str, nn.Layer]: The key is the patter and corresponding value is the result returned by 'handle_func'.
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Examples:
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from paddle import nn
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import paddleclas
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def rep_func(sub_layer: nn.Layer, pattern: str):
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new_layer = nn.Conv2D(
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in_channels=sub_layer._in_channels,
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out_channels=sub_layer._out_channels,
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kernel_size=5,
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padding=2
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)
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return new_layer
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net = paddleclas.MobileNetV1()
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res = net.replace_sub(layer_name_pattern=["blocks[11].depthwise_conv.conv", "blocks[12].depthwise_conv.conv"], handle_func=rep_func)
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print(res)
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# {'blocks[11].depthwise_conv.conv': the corresponding new_layer, 'blocks[12].depthwise_conv.conv': the corresponding new_layer}
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"""
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if not isinstance(layer_name_pattern, list):
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layer_name_pattern = [layer_name_pattern]
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handle_res_dict = {}
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for pattern in layer_name_pattern:
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# find parent layer of sub-layer specified by pattern
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sub_layer_parent = None
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for target_layer_dict in parse_pattern_str(
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pattern=pattern, idx=(0, -1), parent_layer=self):
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sub_layer_parent = target_layer_dict["target_layer"]
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if not sub_layer_parent:
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continue
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# find sub-layer specified by pattern
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sub_layer = None
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for target_layer_dict in parse_pattern_str(
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pattern=pattern, idx=-1, parent_layer=sub_layer_parent):
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sub_layer = target_layer_dict["target_layer"]
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sub_layer_name = target_layer_dict["target_layer_name"]
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sub_layer_index = target_layer_dict["target_layer_index"]
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if not sub_layer:
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continue
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new_sub_layer = handle_func(sub_layer, pattern)
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if sub_layer_index:
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getattr(sub_layer_parent,
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sub_layer_name)[sub_layer_index] = new_sub_layer
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else:
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setattr(sub_layer_parent, sub_layer_name, new_sub_layer)
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handle_res_dict[pattern] = new_sub_layer
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return handle_res_dict
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def stop_after(self, stop_layer_name: str) -> bool:
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"""stop forward and backward after 'stop_layer_name'.
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Args:
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stop_layer_name (str): The name of layer that stop forward and backward after this layer.
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Returns:
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bool: 'True' if successful, 'False' otherwise.
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"""
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to_identity_list = []
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for target_layer_dict in parse_pattern_str(stop_layer_name, self):
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sub_layer_name = target_layer_dict["target_layer_name"]
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sub_layer_index = target_layer_dict["target_layer_index"]
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parent_layer = target_layer_dict["parent_layer"]
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to_identity_list.append(
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(parent_layer, sub_layer_name, sub_layer_index))
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for to_identity_layer in to_identity_list:
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if not set_identity(*to_identity_layer):
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msg = "Failed to set the layers that after stop_layer_name to IdentityLayer."
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logger.warning(msg)
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return False
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return True
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def update_res(self,
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return_patterns: Union[str, List[str]]) -> Dict[str, bool]:
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"""update the results to be returned.
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Args:
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return_patterns (Union[str, List[str]]): The name of layer to return output.
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Returns:
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Dict[str, bool]: The pattern(str) is be set successfully if 'True'(bool), failed if 'False'(bool).
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"""
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class Handler(object):
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def __init__(self, res_dict):
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self.res_dict = res_dict
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def __call__(self, layer, pattern):
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layer.res_dict = self.res_dict
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layer.res_name = pattern
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layer.register_forward_post_hook(layer._save_sub_res_hook)
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return layer
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handle_func = Handler(self.res_dict)
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return self.replace_sub(return_patterns, handle_func=handle_func)
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class WrapLayer(TheseusLayer):
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def __init__(self, sub_layer):
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super(WrapLayer, self).__init__()
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self.sub_layer = sub_layer
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def forward(self, *inputs, **kwargs):
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return self.sub_layer(*inputs, **kwargs)
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def wrap_theseus(sub_layer):
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return WrapLayer(sub_layer)
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def unwrap_theseus(sub_layer):
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if isinstance(sub_layer, WrapLayer):
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sub_layer = sub_layer.sub_layer
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return sub_layer
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def set_identity(parent_layer: nn.Layer,
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layer_name: str,
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layer_index: str=None) -> bool:
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"""set the layer specified by layer_name and layer_index to Indentity.
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Args:
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parent_layer (nn.Layer): The parent layer of target layer specified by layer_name and layer_index.
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layer_name (str): The name of target layer to be set to Indentity.
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layer_index (str, optional): The index of target layer to be set to Indentity in parent_layer. Defaults to None.
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Returns:
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bool: True if successfully, False otherwise.
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"""
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stop_after = False
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for sub_layer_name in parent_layer._sub_layers:
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if stop_after:
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parent_layer._sub_layers[sub_layer_name] = Identity()
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continue
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if sub_layer_name == layer_name:
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stop_after = True
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if layer_index and stop_after:
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stop_after = False
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for sub_layer_index in parent_layer._sub_layers[
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layer_name]._sub_layers:
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if stop_after:
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parent_layer._sub_layers[layer_name][
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sub_layer_index] = Identity()
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continue
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if layer_index == sub_layer_index:
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stop_after = True
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return stop_after
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def slice_pattern(pattern: str, idx: Union[Tuple, int]=None) -> List:
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"""slice the string type "pattern" to list type by separator ".".
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Args:
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pattern (str): The pattern to discribe layer name.
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idx (Union[Tuple, int], optional): The index(s) of sub-list of list sliced. Defaults to None.
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Returns:
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List: The sub-list of list sliced by "pattern".
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"""
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pattern_list = pattern.split(".")
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if idx:
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if isinstance(idx, Tuple):
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if len(idx) == 1:
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return pattern_list[idx[0]]
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elif len(idx) == 2:
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return pattern_list[idx[0]:idx[1]]
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else:
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msg = f"Only support length of 'idx' is 1 or 2 when 'idx' is a Tuple."
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logger.warning(msg)
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return None
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elif isinstance(idx, int):
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return [pattern_list[idx]]
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else:
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msg = f"Only support type of 'idx' is int or Tuple."
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logger.warning(msg)
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return None
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return pattern_list
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def parse_pattern_str(pattern: str, parent_layer: nn.Layer,
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idx=None) -> Dict[str, Union[nn.Layer, None, str]]:
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"""parse the string type pattern.
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Args:
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pattern (str): The pattern to discribe layer name.
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parent_layer (nn.Layer): The parent layer of target layer(s) specified by "pattern".
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idx ([type], optional): [description]. The index(s) of sub-list of list sliced. Defaults to None.
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Returns:
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Dict[str, Union[nn.Layer, None, str]]: Dict["target_layer": Union[nn.Layer, None], "target_layer_name": str, "target_layer_index": str, "parent_layer": nn.Layer]
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Yields:
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Iterator[Dict[str, Union[nn.Layer, None, str]]]: Dict["target_layer": Union[nn.Layer, None], "target_layer_name": str, "target_layer_index": str, "parent_layer": nn.Layer]
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"""
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pattern_list = slice_pattern(pattern, idx)
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if not pattern_list:
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return None, None, None
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while len(pattern_list) > 0:
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if '[' in pattern_list[0]:
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target_layer_name = pattern_list[0].split('[')[0]
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target_layer_index = pattern_list[0].split('[')[1].split(']')[0]
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else:
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target_layer_name = pattern_list[0]
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target_layer_index = None
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target_layer = getattr(parent_layer, target_layer_name, None)
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target_layer = unwrap_theseus(target_layer)
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if target_layer is None:
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msg = f"Not found layer named({target_layer_name}) specifed in pattern({pattern})."
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logger.warning(msg)
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return {
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"target_layer": None,
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"target_layer_name": target_layer_name,
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"target_layer_index": target_layer_index,
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"parent_layer": parent_layer
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}
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if target_layer_index and target_layer:
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if int(target_layer_index) < 0 or int(target_layer_index) >= len(
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target_layer):
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msg = f"Not found layer by index({target_layer_index}) specifed in pattern({pattern}). The lenght of sub_layer's parent layer is < '{len(parent_layer)}' and > '0'."
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logger.warning(msg)
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return {
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"target_layer": None,
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"target_layer_name": target_layer_name,
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"target_layer_index": target_layer_index,
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"parent_layer": parent_layer
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}
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target_layer = target_layer[target_layer_index]
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target_layer = unwrap_theseus(target_layer)
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yield {
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"target_layer": target_layer,
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"target_layer_name": target_layer_name,
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"target_layer_index": target_layer_index,
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"parent_layer": parent_layer
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}
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pattern_list = pattern_list[1:]
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parent_layer = target_layer
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