✏️ Editing: ast_transforms.cpython-38.pyc Read Only

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����������������������@���s ���d�dl�mZ�dd��Zdd��ZdS�)����)�c_astc�����������������C���s����t�|�tj�st�t�|�jtj�s"|�S�t�g�|�jj�}d}|�jjD�]\}t�|tjtj	f�rx|j�
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|��q>||�_|�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 it 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���)
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isinstancer����Switch�AssertionError�stmt�Compound�coord�block_items�Case�Default�append�_extract_nested_case�stmts)Zswitch_nodeZnew_compoundZ	last_case�child��r����../pycparser/ast_transforms.py�fix_switch_cases
���s����3r���c�����������������C���s:���t�|�jd�tjtjf�r6|�|�j�����t|d�|��dS�)z� Recursively extract consecutive Case statements that are made nested
        by the parser and add them to the stmts_list.
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����popr���)Z	case_nodeZ
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