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a k�hI � @ s� d Z ddlmZ ddlZddlZddlZddlZddlZddlZddl m Z m Z ddl m Z ddlmZ ddlmZmZmZmZmZmZ ddlmZmZ dd lmZ dd l m Z m Z m Z dd l m!Z! d Z"d Z#er�e�$dde%� ddd�dd�Z&dddd�dd�Z'G dd � d ej(�Z)dd d d �d d!�Z*d;ddddd d$�d%d&�Z+d'd(d)�d*d+�Z,d'd,d-d.�d/d0�Z-d<ddd1d2�d3d4�Z.d=ddd'd2�d5d6�Z/d>dddd7d8�d9d:�Z0dS )?z�The AstroidBuilder makes astroid from living object and / or from _ast. 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NTzAstroidManager | Noner% �None)�manager�apply_transformsr c s& t � �|� || _tjjs"t�� d S �N)�super�__init__�_apply_transformsr �InspectBuilderZ bootstrappedZ_astroid_bootstrapping)�selfr2 r3 �� __class__r! r" r6 H s zAstroidBuilder.__init__ztypes.ModuleTyper$ � nodes.Module)�module�modnamer c C s� d}t |dd�}t |dd�}|rH|p(|j}|�|�}|rH| j|||d�}|du r�|dur�tj�t�|��\}}|dv r�tj� |d �r�| � |d |�}|du r�| j |||d�}| j r�| j �|�}t|tj�s�J �|S )z/Build an astroid from a living module instance.N�__file__� __loader__)�path> z.pyc�.pyz.pyorB �r> rA )�getattr�__name__� get_source� string_build�osrA �splitextr Z_path_from_filename�exists� file_buildZ inspect_buildr7 �_manager�visit_transforms� isinstancer �Module) r9 r= r> r& rA �loader�sourceZpath_�extr! r! r" � module_buildP s$ zAstroidBuilder.module_buildr )rA r> r c C sH zt |�\}}}W n� tyH } z td|||d�|�W Y d}~nrd}~0 ttfy� } z td|||d�|�W Y d}~n:d}~0 ty� } ztd|d�|�W Y d}~n d}~0 0 |�| |du �rzd�t� |��}W n, t �y t j � t j �|��d }Y n0 | �|||�\}}| �|||�W d � S 1 �s:0 Y dS ) zyBuild astroid from a source code file (i.e. from an ast). *path* is expected to be a python source file z#Unable to load file {path}: {error})r> rA �errorNzBPython 3 encoding specification error or unknown encoding: {error}z.Wrong or no encoding specified for {filename}.)r �.r )r# �OSErrorr � SyntaxError� LookupErrorr � UnicodeError�joinr Zmodpath_from_file� ImportErrorrH rA rI �basename� _data_build� _post_build) r9 rA r> r r r �excr= �builderr! r! r" rK m sD ������ zAstroidBuilder.file_build� )r r> rA r c C s, | � |||�\}}|�d�|_| �||d�S )z&Build astroid from source code string.zutf-8)r] �encodeZ file_bytesr^ )r9 r r> rA r= r` r! r! r" rG � s zAstroidBuilder.string_buildzrebuilder.TreeRebuilder)r= r` r r c C sz ||_ | j�|� |jD ]4}|jdkrB|jD ]\}}|j�|� q,| �|� q|j D ]}| � |� qT| j rv| j� |�}|S )zAHandles encoding and delayed nodes after a module has been built.� __future__) � file_encodingrL � cache_moduleZ_import_from_nodesr> �namesZfuture_imports�add�add_from_names_to_localsZ_delayed_assattr�delayed_assattrr7 rM )r9 r= r` r Z from_node�symbol�_Zdelayedr! r! r" r^ � s zAstroidBuilder._post_buildz,tuple[nodes.Module, rebuilder.TreeRebuilder]c C s� zt |d|d�\}}W n> tttfyT } z td||||d�|�W Y d}~n d}~0 0 |durltj�|�}nd}|�d�r�|dd� }d}n$|duo�tj� tj� |��d d k}t � | j ||�} | �||||�} | | fS ) z4Build tree node from data and add some informations.T)� type_commentsr> z#Parsing Python code failed: {error})rQ r> rA rT Nz<?>z .__init__i����r r6 )� _parse_string� TypeError� ValueErrorrW r rH rA �abspath�endswithrI r\ r Z TreeRebuilderrL Z visit_module) r9 r r> rA r& � parser_moduler_ Z node_file�packager` r= r! r! r" r] � s4 ��� �zAstroidBuilder._data_buildznodes.ImportFrom�r& r c s� ddd�dd�� ddd�� fd d � }|j s.J �|jD ]�\}}|d kr�z |�� }W n tyf Y q4Y n0 |�� D ]&}|j �||� ||j �� j| � qpq4|j �|p�||� ||j �� j|p�| � q4d S ) zeStore imported names to the locals. Resort the locals if coming from a delayed node � nodes.NodeNG�intrt c S s | j pdS )Nr )� fromlineno�r& r! r! r" � _key_func� s z:AstroidBuilder.add_from_names_to_locals.<locals>._key_funczlist[nodes.NodeNG]r1 )�my_listr c s | j � d� d S )N)�key)�sort)rz �ry r! r" � sort_locals� s z<AstroidBuilder.add_from_names_to_locals.<locals>.sort_locals�*N)�parentrf Zdo_import_moduler Z public_namesZ set_local�scope�locals)r9 r& r~ �name�asnameZimportedr! r} r" rh � s z'AstroidBuilder.add_from_names_to_localsznodes.AssignAttrc C s� ddl m} z�|j�� D ]�}t|tj�r*qztt|�tj |j hv r^|j }|j }t ||j�s�W qn>t|tj �rpW qn,t|tjtjf�r�W qn|jr�|j }n|j}W n ty� Y qY n0 |�|jg �}||v r�q|�|� qW n ty� Y n0 dS )z_Visit a AssAttr node. This adds name to locals and handle members definition. r )�objectsN)�astroidr� �exprZinferrN r ZUninferableBase�typer �InstanceZExceptionInstanceZ_proxiedZinstance_attrsr/ r' ZProxyZ is_functionr� �AttributeError� setdefault�appendr )r9 r& r� �inferredZiattrs�valuesr! r! r" ri � s4 z AstroidBuilder.delayed_assattr)NT)N)N)ra N) rE � __module__� __qualname__�__doc__r6 rS rK rG r^ r] rh ri � __classcell__r! r! r: r" r0 > s � � ' �!r0 z Sequence[str]r< )r� rA r c C s" t j| |dd�}|jg d d� |S )NT)rA rs )�bodyZdoc_node)r rO Zpostinit)r� rA r= r! r! r" � build_namespace_package_module s r� ra T)�code� module_namerA r3 r c C s( t �| �} tt� |d�}|j| ||d�S )aw Parses a source string in order to obtain an astroid AST from it. :param str code: The code for the module. :param str module_name: The name for the module, if any :param str path: The path for the module :param bool apply_transforms: Apply the transforms for the give code. Use it if you don't want the default transforms to be applied. )r2 r3 rC )�textwrap�dedentr0 r rG )r� r� rA r3 r` r! r! r" �parse s �r� ru zIterator[nodes.NodeNG]rt c c s� t | tj�r�t | jtj�r�| jjtkr�| jd }| js:J �| j|_| jj D ]T}t | j|�}t |t �r�t |�D ]\}}|| u rl|||< qlqJ|| u rJt | j||� qJ|V n | �� D ]}t|�E dH q�dS )a Find expressions in a call to _TRANSIENT_FUNCTION and extract them. The function walks the AST recursively to search for expressions that are wrapped into a call to _TRANSIENT_FUNCTION. If it finds such an expression, it completely removes the function call node from the tree, replacing it by the wrapped expression inside the parent. :param node: An astroid node. :type node: astroid.bases.NodeNG :yields: The sequence of wrapped expressions on the modified tree expression can be found. r N)rN r �Call�func�Namer� �_TRANSIENT_FUNCTION�argsr� Z_astroid_fieldsrD �list� enumerate�setattr� get_children�_extract_expressions)r& Z real_exprr� �child�idxZcompound_childr! r! r" r� / s( � � � r� rv �nodes.NodeNG | None)r& �liner c C sX t | tjtjtjf�r | j}n| j}||kr0| S | �� D ]}t||�}|r8| S q8dS )a� Extracts the statement on a specific line from an AST. If the line number of node matches line, it will be returned; otherwise its children are iterated and the function is called recursively. :param node: An astroid node. :type node: astroid.bases.NodeNG :param line: The line number of the statement to extract. :type line: int :returns: The statement on the line, or None if no statement for the line can be found. :rtype: astroid.bases.NodeNG or None N) rN r �ClassDef� FunctionDefZ MatchCaserw �linenor� �_find_statement_by_line)r& r� Z node_liner� �resultr! r! r" r� W s r� z!nodes.NodeNG | list[nodes.NodeNG])r� r� r c s� ddd�dd�� g }t | �� �D ]$\}}|�� �t�r |�|d � q t| |d���js`td��g }|rz�fdd �|D �}|� t ��� |s�|��jd � � fd d �|D �}d d � |D �}t |�dkr�|d S |S )ah Parses some Python code as a module and extracts a designated AST node. Statements: To extract one or more statement nodes, append #@ to the end of the line Examples: >>> def x(): >>> def y(): >>> return 1 #@ The return statement will be extracted. >>> class X(object): >>> def meth(self): #@ >>> pass The function object 'meth' will be extracted. Expressions: To extract arbitrary expressions, surround them with the fake function call __(...). After parsing, the surrounded expression will be returned and the whole AST (accessible via the returned node's parent attribute) will look like the function call was never there in the first place. Examples: >>> a = __(1) The const node will be extracted. >>> def x(d=__(foo.bar)): pass The node containing the default argument will be extracted. >>> def foo(a, b): >>> return 0 < __(len(a)) < b The node containing the function call 'len' will be extracted. If no statements or expressions are selected, the last toplevel statement will be returned. If the selected statement is a discard statement, (i.e. an expression turned into a statement), the wrapped expression is returned instead. For convenience, singleton lists are unpacked. :param str code: A piece of Python code that is parsed as a module. Will be passed through textwrap.dedent first. :param str module_name: The name of the module. :returns: The designated node from the parse tree, or a list of nodes. r� rt c S s t | tj�r| jS | S r4 )rN r �Exprr( rx r! r! r" �_extract� s z extract_node.<locals>._extract� )r� z"Empty tree, cannot extract from itc s g | ]}t � |��qS r! )r� )r) r� )�treer! r" � <listcomp>� r, z extract_node.<locals>.<listcomp>���c s g | ] }� |��qS r! r! �r) r& )r� r! r" r� � r, c S s g | ]}|d ur|�qS r4 r! r� r! r! r" r� � r, r ) r� � splitlines�striprq �_STATEMENT_SELECTORr� r� r� ro �extendr� �len)r� r� Zrequested_linesr� r� Z extractedZextracted_without_noner! )r� r� r" � extract_nodez s& 6 r� c C s t | |�}t|t�r |d S |S )zDCall extract_node while making sure that only one value is returned.r )r� rN r� )r� r� �retr! r! r" �_extract_single_node� s r� z tuple[ast.Module, ParserModule])r rl r> r c C s� t |d�}z|j| d ||d�}W n\ ty~ } zDt�d|jp@d�}|rL|sN� t dd�}|j| d dd�}W Y d }~n d }~0 0 ||fS )N)rl � )rl r z #\s+type:ra F)r r� rW �re�search�text)r rl r> rr �parsedr_ Ztype_annot_relatedr! r! r" rm � s � (rm )ra NT)ra )ra )TN)1r� rc r �astrH r� r� �types�warnings�collections.abcr r �ior �tokenizer r� r r r r r r Z astroid._astr r Z astroid.constr Zastroid.exceptionsr r r Zastroid.managerr r� r� �filterwarnings� SyntaxWarningr# r/ r8 r0 r� r� r� r� r� r� rm r! r! r! r" �<module> sD V �(#V �
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