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� Zv d� d� � Zw d� d � Zx d� d� � Zy d� d� � Zz d� d� � Z{ e| d� k r�e{ � n d S(� uo 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.
u Ka-Ping Yee <ping@lfw.org>up GvR, ESR, Tim Peters, Thomas Wouters, Fred Drake, Skip Montanaro, Raymond Hettinger, Trent Nelson, Michael Foordi N( u lookupu BOM_UTF8( u
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untokenizeu ENCODINGu TokenInfoi i i u (u )u [u ]u :u ,u ;u +u -u *u /u |u &u <u >u =u .u %u {u }u ==u !=u <=u >=u ~u ^u <<u >>u **u +=u -=u *=u /=u %=u &=u |=u ^=u <<=u >>=u **=u //u //=u @c B s2 | Ee Z d Z d d � Z e d d � � Z d S( u TokenInfoc C s. d | j t | j f } d | j d | � S( Nu %d (%s)u8 TokenInfo(type=%s, string=%r, start=%r, end=%r, line=%r)u type( u typeu tok_nameu _replace( u selfu annotated_type( ( u- /opt/alt/python33/lib64/python3.3/tokenize.pyu __repr__b s u TokenInfo.__repr__c C s4 | j t k r) | j t k r) t | j S| j Sd S( N( u typeu OPu stringu EXACT_TOKEN_TYPES( u self( ( u- /opt/alt/python33/lib64/python3.3/tokenize.pyu
exact_typeg s u TokenInfo.exact_typeN( u __name__u
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[0-9]+[jJ]u [jJ]u (?:[bB][rR]?|[rR][bB]?|[uU])?u [^'\\]*(?:\\.[^'\\]*)*'u [^"\\]*(?:\\.[^"\\]*)*"u% [^'\\]*(?:(?:\\.|'(?!''))[^'\\]*)*'''u% [^"\\]*(?:(?:\\.|"(?!""))[^"\\]*)*"""u '''u """u '[^\n'\\]*(?:\\.[^\n'\\]*)*'u "[^\n"\\]*(?:\\.[^\n"\\]*)*"u \*\*=?u >>=?u <<=?u //=?u ->u [+\-*/%&|^=<>]=?u [][(){}]u \r?\nu \.\.\.u [:;.,@]u '[^\n'\\]*(?:\\.[^\n'\\]*)*u 'u "[^\n"\\]*(?:\\.[^\n"\\]*)*u "u
\\\r?\n|\Zc C s t j | t j � S( N( u reu compileu UNICODE( u expr( ( u- /opt/alt/python33/lib64/python3.3/tokenize.pyu _compile� s u _compileu r'''u r"""u b'''u b"""u R'''u R"""u B'''u B"""u br'''u br"""u bR'''u bR"""u Br'''u Br"""u BR'''u BR"""u rb'''u rb"""u Rb'''u Rb"""u rB'''u rB"""u RB'''u RB"""u u'''u u"""u U'''u U"""u ru Ru bu Bu uu Uu r'u r"u R'u R"u b'u b"u B'u B"u br'u br"u Br'u Br"u bR'u bR"u BR'u BR"u rb'u rb"u rB'u rB"u Rb'u Rb"u RB'u RB"u u'u u"u U'u U"i c B s | Ee Z d Z d S( u
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u Untokenizerc C s( g | _ d | _ d | _ d | _ d S( Ni i ( u tokensu prev_rowu prev_colu Noneu encoding( u self( ( u- /opt/alt/python33/lib64/python3.3/tokenize.pyu __init__� s u Untokenizer.__init__c C s� | \ } } | | j k s9 | | j k r` | | j k r` t d j | | | j | j � � � n | | j } | r� | j j d | � d | _ n | | j } | r� | j j d | � n d S( Nu+ start ({},{}) precedes previous end ({},{})u \
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u Untokenizer.add_whitespacec C s� t | � } x� | D]� } t | � d k r? | j | | � Pn | \ } } } } } | t k ro | | _ q n | t k r Pn | j | � | j j | � | \ | _ | _
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k r | j � qA n> | t t f k rd } n# | r>| r>| | d � d } n | | � qA Wd S( Ni i u i FTi����( u tokensu appendu NEWLINEu NLu Falseu chainu ENCODINGu encodingu NAMEu NUMBERu STRINGu Trueu INDENTu DEDENTu pop(
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u Untokenizerc C s@ t � } | j | � } | j d k r< | j | j � } n | S( u 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 intput:
# Output bytes will tokenize the 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
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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.
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The tokenize() generator requires one argment, 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. Alternately, 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.
The first token sequence will always be an ENCODING token
which tells you which encoding was used to decode the bytes stream.
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single_quotedu tabsizeu Exceptionu
TokenErroru StopTokenizingu Untokenizeru
untokenizeu _get_normal_nameu detect_encodingu openu tokenizeu _tokenizeu generate_tokensu mainu __name__( ( ( u- /opt/alt/python33/lib64/python3.3/tokenize.pyu <module> sF
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