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�
��_^@ � � � d dl mZ d� Zd� ZdS )� )�c_astc �& � t | t j � � sJ �t | j t j � � s| S t j g | j j � � }d}| j j pg D ]�}t |t j t j f� � r=|j � |� � t ||j � � |j d }�e|�|j � |� � ��|j � |� � ��|| _ | S )a� The 'case' statements in a 'switch' come out of parsing with one
child node, so subsequent statements are just tucked to the parent
Compound. Additionally, consecutive (fall-through) case statements
come out messy. This is a peculiarity of the C grammar. The following:
switch (myvar) {
case 10:
k = 10;
p = k + 1;
return 10;
case 20:
case 30:
return 20;
default:
break;
}
Creates this tree (pseudo-dump):
Switch
ID: myvar
Compound:
Case 10:
k = 10
p = k + 1
return 10
Case 20:
Case 30:
return 20
Default:
break
The goal of this transform is to fix this mess, turning it into the
following:
Switch
ID: myvar
Compound:
Case 10:
k = 10
p = k + 1
return 10
Case 20:
Case 30:
return 20
Default:
break
A fixed AST node is returned. The argument may be modified.
N���) �
isinstancer �Switch�stmt�Compound�coord� block_items�Case�Default�append�_extract_nested_case�stmts)� switch_node� new_compound� last_case�childs �=/usr/lib/python3.11/site-packages/pycparser/ast_transforms.py�fix_switch_casesr
s � �f �k�5�<� 0� 0�0�0�0� �k�&��� 7� 7� ��� �>�"�k�&6�&<�=�=�L� �I�
�"�.�4�"� .� .�� �e�e�j�%�-� 8� 9� 9� .�
� $� +� +�E� 2� 2� 2� �� �(@� A� A� A�$�0��4�I�I� � � �(�/�/��6�6�6�6���&�&�u�-�-�-�-�#�K�� �� c �� � t | j d t j t j f� � rD|� | j � � � � � t |d |� � dS dS )z� Recursively extract consecutive Case statements that are made nested
by the parser and add them to the stmts_list.
� r N)r r r r r
r �popr )� case_node�
stmts_lists r r r c sl � � �)�/�!�$�u�z�5�=�&A�B�B� 9����)�/�-�-�/�/�0�0�0� �Z��^�Z�8�8�8�8�8�9� 9r N)� r r r � r r �<module>r sE �� � � � � � �S� S� S�l9� 9� 9� 9� 9r