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tokenize.cpython-36.pyc
3 \8s � - @ s� d Z dZdZddlmZ ddlmZmZ ddl Z ddl m Z ddl m Z ddl ZddlZddlZdd lT ejd ej�Zejd ej�ZddlZejd d dddddg Z[eZd ee< ed Zdee< ed Zdee< ed7 Ze e e e e e!e"e#e$e%e&e'e(e)e*e+e,e-e.e/e0e1e2e3e4e5e6e7e8e9e:e;e<e=e>e?e@eAeBeCeDeEeFeGd�,ZHG dd� de jIdd��ZJdd� ZKdd � ZLd d � ZMd ZNd ZOeNeLd!eN � eMeO� ZPd"ZQd#ZRd$ZSd%ZTd&ZUeKeReSeTeU�ZVd'ZWeKd(d)�eMeW� ZXd*eW ZYeKeXeY�ZZeKd+eZd, �Z[eKe[eZeV�Z\d-d.� Z]d/d0� Z^eKe]� � Z_d1Z`d2Zad3Zbd4ZceKe_d5 e_d6 �ZdeKe_d7 e_d8 �ZeeKd9d:d;d<d=d>d?d@�ZfdAZgeKdBdCdD�ZheKefegeh�ZieKe\eieeeQ�ZjePej ZkeKe_dE eKdFd!� e_dG eKdHd!� �ZleKdIeOed�ZmeNeKeme\eieleQ� Zni Zox@e]� D ]6Zpe`eoepdF < eaeoepdH < ebeoepd5 < eceoepd6 < �q�W eq� Zreq� Zsx\e]� D ]RZtx$etdH etdF fD ]Zuerjveu� �q8W x$etd6 etd5 fD ]Zuesjveu� �q^W �q"W dJZwG dKdL� dLex�ZyG dMdN� dNex�ZzG dOdP� dP�Z{dQd� Z|dRdS� Z}dTd� Z~dUdV� ZdWd � ZdXdY� Z�dZd[� Z�d\d]� Z�e�d^k�r�e�� dS )_ao Tokenization help for Python programs. tokenize(readline) is a generator that breaks a stream of bytes into Python tokens. It decodes the bytes according to PEP-0263 for determining source file encoding. It accepts a readline-like method which is called repeatedly to get the next line of input (or b"" for EOF). It generates 5-tuples with these members: the token type (see token.py) the token (a string) the starting (row, column) indices of the token (a 2-tuple of ints) the ending (row, column) indices of the token (a 2-tuple of ints) the original line (string) It is designed to match the working of the Python tokenizer exactly, except that it produces COMMENT tokens for comments and gives type OP for all operators. Additionally, all token lists start with an ENCODING token which tells you which encoding was used to decode the bytes stream. zKa-Ping Yee <ping@lfw.org>zpGvR, ESR, Tim Peters, Thomas Wouters, Fred Drake, Skip Montanaro, Raymond Hettinger, Trent Nelson, Michael Foord� )�open)�lookup�BOM_UTF8N)� TextIOWrapper)�chain)�*z&^[ \t\f]*#.*?coding[:=][ \t]*([-\w.]+)s ^[ \t\f]*(?:[#\r\n]|$)�COMMENT�tokenize�detect_encoding�NL� untokenize�ENCODING� TokenInfo� � � ),�(�)�[�]�:�,�;�+�-r �/�|�&�<�>�=�.�%�{�}z==z!=z<=z>=�~�^z<<z>>z**z+=z-=z*=z/=z%=z&=z|=z^=z<<=z>>=z**=z//z//=�@z@=c @ s e Zd Zdd� Zedd� �ZdS )r c C s$ d| j t| j f }d| j|d� S )Nz%d (%s)z8TokenInfo(type=%s, string=%r, start=%r, end=%r, line=%r))�type)r( �tok_name�_replace)�self�annotated_type� r- � /usr/lib64/python3.6/tokenize.py�__repr__d s zTokenInfo.__repr__c C s( | j tkr | jtkr t| j S | j S d S )N)r( �OP�string�EXACT_TOKEN_TYPES)r+ r- r- r. � exact_typei s zTokenInfo.exact_typeN)�__name__� __module__� __qualname__r/ �propertyr3 r- r- r- r. r c s ztype string start end linec G s ddj | � d S )Nr r r )�join)�choicesr- r- r. �groupp s r: c G s t | � d S )Nr )r: )r9 r- r- r. �anyq s r; c G s t | � d S )N�?)r: )r9 r- r- r. �mayber s r= z[ \f\t]*z #[^\r\n]*z\\\r?\nz\w+z0[xX](?:_?[0-9a-fA-F])+z0[bB](?:_?[01])+z0[oO](?:_?[0-7])+z (?:0(?:_?0)*|[1-9](?:_?[0-9])*)z[eE][-+]?[0-9](?:_?[0-9])*z)[0-9](?:_?[0-9])*\.(?:[0-9](?:_?[0-9])*)?z\.[0-9](?:_?[0-9])*z[0-9](?:_?[0-9])*z[0-9](?:_?[0-9])*[jJ]z[jJ]c C sn ddddddg} t dg�}xN| D ]F}x@tj|�D ]2}x,tjdd � |D �� D ]}|jdj|�� qJW q0W q W |S ) N�b�r�u�f�br�fr� c S s g | ]}||j � f�qS r- )�upper)�.0�cr- r- r. � <listcomp>� s z(_all_string_prefixes.<locals>.<listcomp>)�set� _itertools� permutations�product�addr8 )�_valid_string_prefixes�result�prefix�tr@ r- r- r. �_all_string_prefixes� s rR c C s t j| t j�S )N)�re�compile�UNICODE)�exprr- r- r. �_compile� s rW z[^'\\]*(?:\\.[^'\\]*)*'z[^"\\]*(?:\\.[^"\\]*)*"z%[^'\\]*(?:(?:\\.|'(?!''))[^'\\]*)*'''z%[^"\\]*(?:(?:\\.|"(?!""))[^"\\]*)*"""z'''z"""z '[^\n'\\]*(?:\\.[^\n'\\]*)*'z "[^\n"\\]*(?:\\.[^\n"\\]*)*"z\*\*=?z>>=?z<<=?z!=z//=?z->z[+\-*/%&@|^=<>]=?r% z[][(){}]z\r?\nz\.\.\.z[:;.,@]z'[^\n'\\]*(?:\\.[^\n'\\]*)*�'z"[^\n"\\]*(?:\\.[^\n"\\]*)*�"z \\\r?\n|\Z� c @ s e Zd ZdS )� TokenErrorN)r4 r5 r6 r- r- r- r. r[ � s r[ c @ s e Zd ZdS )�StopTokenizingN)r4 r5 r6 r- r- r- r. r\ � s r\ c @ s, e Zd Zdd� Zdd� Zdd� Zdd� Zd S ) � Untokenizerc C s g | _ d| _d| _d | _d S )Nr r )�tokens�prev_row�prev_col�encoding)r+ r- r- r. �__init__� s zUntokenizer.__init__c C s� |\}}|| j k s&|| j kr>|| jk r>tdj||| j | j���|| j }|rb| jjd| � d| _|| j }|r�| jjd| � d S )Nz+start ({},{}) precedes previous end ({},{})z\ r � )r_ r` � ValueError�formatr^ �append)r+ �start�row�col� row_offset� col_offsetr- r- r. �add_whitespace� s zUntokenizer.add_whitespacec C s4 t |�}g }d}�x|D �] }t|�dkr8| j||� P |\}}}} } |tkrV|| _q|tkr`P |tkrv|j|� qnl|tkr�|j � | \| _ | _ qnL|t t fkr�d}n:|r�|r�|d } |d t| �kr�| jj| � t| �| _ d}| j|� | jj|� | \| _ | _ |t t fkr| j d7 _ d| _ qW dj| j�S )NFr Tr r rD ���)�iter�len�compatr ra � ENDMARKER�INDENTrf �DEDENT�popr_ r` �NEWLINEr r^ rl r8 ) r+ �iterable�it�indents� startlinerQ �tok_type�tokenrg �end�line�indentr- r- r. r � sF zUntokenizer.untokenizec C s� g }| j j}|d ttfk}d}x�t|g|�D ]�}|d d� \}} |tkrR| | _q.|ttt t fkrj| d7 } |t kr�|r~d| } d}nd}|t kr�|j| � q.n>|t kr�|j� q.n*|ttfkr�d}n|r�|r�||d � d}|| � q.W d S )Nr Fr rc Tr rm )r^ rf ru r r r ra �NAME�NUMBER�ASYNC�AWAIT�STRINGrr rs rt ) r+ r{ rv rx � toks_appendry � prevstring�tok�toknum�tokvalr- r- r. rp s8 zUntokenizer.compatN)r4 r5 r6 rb rl r rp r- r- r- r. r] � s %r] c C s* t � }|j| �}|jdk r&|j|j�}|S )a Transform tokens back into Python source code. It returns a bytes object, encoded using the ENCODING token, which is the first token sequence output by tokenize. Each element returned by the iterable must be a token sequence with at least two elements, a token number and token value. If only two tokens are passed, the resulting output is poor. Round-trip invariant for full input: Untokenized source will match input source exactly Round-trip invariant for limited input: # Output bytes will tokenize back to the input t1 = [tok[:2] for tok in tokenize(f.readline)] newcode = untokenize(t1) readline = BytesIO(newcode).readline t2 = [tok[:2] for tok in tokenize(readline)] assert t1 == t2 N)r] r ra �encode)rv �ut�outr- r- r. r = s c C sH | dd� j � jdd�}|dks*|jd�r.dS |d ks@|jd�rDdS | S )z(Imitates get_normal_name in tokenizer.c.N� �_r zutf-8zutf-8-�latin-1� iso-8859-1� iso-latin-1�latin-1-� iso-8859-1-� iso-latin-1-)r� r� r� )r� r� r� )�lower�replace� startswith)�orig_enc�encr- r- r. �_get_normal_nameX s r� c s� y �j j�W n tk r$ d�Y nX d� d}d}�fdd�}� �fdd�}|� }|jt�rpd� |d d� }d }|s||g fS ||�}|r�||gfS tj|�s�||gfS |� }|s�||gfS ||�}|r�|||gfS |||gfS ) a The detect_encoding() function is used to detect the encoding that should be used to decode a Python source file. It requires one argument, readline, in the same way as the tokenize() generator. It will call readline a maximum of twice, and return the encoding used (as a string) and a list of any lines (left as bytes) it has read in. It detects the encoding from the presence of a utf-8 bom or an encoding cookie as specified in pep-0263. If both a bom and a cookie are present, but disagree, a SyntaxError will be raised. If the encoding cookie is an invalid charset, raise a SyntaxError. Note that if a utf-8 bom is found, 'utf-8-sig' is returned. If no encoding is specified, then the default of 'utf-8' will be returned. NFzutf-8c s y� � S t k r dS X d S )N� )� StopIterationr- )�readliner- r. � read_or_stop{ s z%detect_encoding.<locals>.read_or_stopc s� y| j d�}W n4 tk rB d}�d k r6dj|��}t|��Y nX tj|�}|sVd S t|jd��}y t|�}W n: t k r� �d kr�d| }n dj�|�}t|��Y nX � r�|dkr؈d kr�d}n dj��}t|��|d 7 }|S ) Nzutf-8z'invalid or missing encoding declarationz {} for {!r}r zunknown encoding: z unknown encoding for {!r}: {}zencoding problem: utf-8z encoding problem for {!r}: utf-8z-sig) �decode�UnicodeDecodeErrorre � SyntaxError� cookie_re�matchr� r: r � LookupError)r} � line_string�msgr� ra �codec)� bom_found�filenamer- r. � find_cookie� s6 z$detect_encoding.<locals>.find_cookieTr z utf-8-sig)�__self__�name�AttributeErrorr� r �blank_rer� )r� ra �defaultr� r� �first�secondr- )r� r� r� r. r c s8 & c C sV t | d�}y0t|j�\}}|jd� t||dd�}d|_|S |j� � Y nX dS )zXOpen a file in read only mode using the encoding detected by detect_encoding(). �rbr T)�line_bufferingr? N)� _builtin_openr r� �seekr �mode�close)r� �bufferra �lines�textr- r- r. r � s r c C sB ddl m}m} t| �\}}t| d�}|d�}t||||�j|�S )a� The tokenize() generator requires one argument, readline, which must be a callable object which provides the same interface as the readline() method of built-in file objects. Each call to the function should return one line of input as bytes. Alternatively, readline can be a callable function terminating with StopIteration: readline = open(myfile, 'rb').__next__ # Example of alternate readline The generator produces 5-tuples with these members: the token type; the token string; a 2-tuple (srow, scol) of ints specifying the row and column where the token begins in the source; a 2-tuple (erow, ecol) of ints specifying the row and column where the token ends in the source; and the line on which the token was found. The line passed is the logical line; continuation lines are included. 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