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Used as a main program, this can refactor any number of files and/or
recursively descend down directories. Imported as a module, this
provides infrastructure to write your own refactoring tool.
i( t with_statements# Guido van Rossum <guido@python.org>N( t chaini ( t drivert tokenizet token( t pytreet pygramc C s t | g g d g } t i i | i } g } xg t t i | D]P } | i d o: | i d o* | o | d } n | i | d qI qI W| S( sE Return a sorted list of all available fix names in the given package.t *t fix_s .pyi i(
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d | d S( sf Accepts a pytree Pattern Node and returns a set
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c C s t i t } g } x | D] } | i o\ y t | i } Wn t j
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Return the fully qualified names for fixers in the package pkg_name.
t .( R t False( t pkg_namet _[1]t fix_name( ( s& /usr/lib/python2.6/lib2to3/refactor.pyt get_fixers_from_packaged s c C s | S( N( ( t obj( ( s& /usr/lib/python2.6/lib2to3/refactor.pyt _identityk s i i c C s | i d d S( Nu
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d | _ g | _ t | _ t i | i d t i d | i | _ | i \ | _ | _ t | i | _ t | i | _ g | _ d S( s Initializer.
Args:
fixer_names: a list of fixers to import
options: an dict with configuration.
explicit: a list of fixers to run even if they are explicit.
Rg Rf t convertt loggerN( t fixerst explicitt _default_optionst copyt optionsR! R' R t! python_grammar_no_print_statementt grammarR2 t errorst loggingt getLoggerRj t fixer_logR@ t wroteR t DriverR Ri t
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} | i d | | i d | | | f S( s Inspects the options to load the requested patterns and handlers.
Returns:
(pre_order, post_order), where pre_order is the list of fixers that
want a pre-order AST traversal, and post_order is the list that want
post-order traversal.
R R? i it _t s Can't find %s.%ss Skipping implicit fixer: %ss Adding transformation: %st pret posts Illegal fixer order: %rt run_ordert key( Rk R t rsplitR t FILE_PREFIXt lent splitt CLASS_PREFIXt joint titlet getattrt AttributeErrorRd Ro Ru Rl RW t log_messaget log_debugt orderR t operatort
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7c O s d S( s Called when an error occurs.N( ( R~ t msgt argst kwds( ( s& /usr/lib/python2.6/lib2to3/refactor.pyt log_error s c G s) | o | | } n | i i | d S( s Hook to log a message.N( Rj t info( R~ R R ( ( s& /usr/lib/python2.6/lib2to3/refactor.pyR s c G s) | o | | } n | i i | d S( N( Rj t debug( R~ R R ( ( s& /usr/lib/python2.6/lib2to3/refactor.pyR s c C s d S( sT Called with the old version, new version, and filename of a
refactored file.N( ( R~ t old_textt new_textt filenamet equal( ( s& /usr/lib/python2.6/lib2to3/refactor.pyt print_output s c C sR xK | D]C } t i i | o | i | | | q | i | | | q Wd S( s) Refactor a list of files and directories.N( R
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c C s x t i | D] \ } } } | i d | | i | i xk | D]c } | i d oL t i i | d i d o, t i i | | } | i | | | qJ qJ Wg } | D]! }
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i d p | |
q q ~ | (q Wd S( s Descends down a directory and refactor every Python file found.
Python files are assumed to have a .py extension.
Files and subdirectories starting with '.' are skipped.
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Do our best to decode a Python source file correctly.
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t opent IOErrorR R! R t detect_encodingRR t closet _open_with_encodingt __exit__t __enter__RI t read( R~ R t ft errR RB ( ( s& /usr/lib/python2.6/lib2to3/refactor.pyt _read_python_source( s ,c C s | i | \ } } | d j o d S| d 7} | o` | i d | | i | | } | | j o | i | | | | | q | i d | n^ | i | | } | o4 | i o* | i t | d | d | d | n | i d | d S( s Refactors a file.Nu
s Refactoring doctests in %ss No doctest changes in %siR R s No changes in %s( R R! R t refactor_docstringt processed_filet refactor_stringt was_changedt unicode( R~ R R R RH R t outputt tree( ( s& /usr/lib/python2.6/lib2to3/refactor.pyR 8 s
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o& } | i d | | i i | d SXWd | i | i _ X| | _
| i d | | i | | | S( sF Refactor a given input string.
Args:
data: a string holding the code to be refactored.
name: a human-readable name for use in error/log messages.
Returns:
An AST corresponding to the refactored input stream; None if
there were errors during the parse.
Rg s Can't parse %s: %s: %sNs Refactoring %s(
Rc R Rp R Rq t parse_stringR( R t __class__R t future_featuresR t
refactor_tree( R~ t dataR R` R R ( ( s& /usr/lib/python2.6/lib2to3/refactor.pyR O s
c C s t i i } | oT | i d | i | d } | | j o | i | d | q | i d nN | i | d } | o' | i o | i t | d | n | i d d S( Ns Refactoring doctests in stdins <stdin>s No doctest changes in stdins No changes in stdin( t syst stdinR R R R R R R ( R~ R RH R R ( ( s& /usr/lib/python2.6/lib2to3/refactor.pyt refactor_stdinj s
c C s x- t | i | i D] } | i | | q W| i | i | i | i | i | i x- t | i | i D] } | i | | qx W| i S( sA Refactors a parse tree (modifying the tree in place).
Args:
tree: a pytree.Node instance representing the root of the tree
to be refactored.
name: a human-readable name for this tree.
Returns:
True if the tree was modified, False otherwise.
( R Ry Rz t
start_treet traverse_byR{ R| t finish_treeR ( R~ R R R; ( ( s& /usr/lib/python2.6/lib2to3/refactor.pyR z s c C s | p d Sxv | D]n } xe | | i D]V } | i | } | o: | i | | } | d j o | i | | } q} q' q' Wq Wd S( s Traverse an AST, applying a set of fixers to each node.
This is a helper method for refactor_tree().
Args:
fixers: a list of fixer instances.
traversal: a generator that yields AST nodes.
Returns:
None
N( R t matcht transformR! RG ( R~ Rk t traversalt nodeR; t resultst new( ( s& /usr/lib/python2.6/lib2to3/refactor.pyR s
c C s | i i | | d j o) | i | d } | d j o d Sn | | j } | i | | | | | o | i d | d S| o | i | | | | n | i d | d S( sP
Called when a file has been refactored, and there are changes.
i Ns No changes to %ss Not writing changes to %s( R} R R! R R R t
write_file( R~ R R R R R R ( ( s& /usr/lib/python2.6/lib2to3/refactor.pyR s
c C s y t | d d | } Wn, t i j
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o } | i d | | n XWd | i X| i d | t | _ d S( s Writes a string to a file.
It first shows a unified diff between the old text and the new text, and
then rewrites the file; the latter is only done if the write option is
set.
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t errorR R RK R R RW Rv ( R~ R R R R R R ( ( s& /usr/lib/python2.6/lib2to3/refactor.pyR s s >>> s ... c
C s g } d } d } d } d } x5| i t D]$} | d 7} | i i | i o_ | d j o# | i | i | | | | n | } | g } | i | i } | | } q. | d j oF | i | | i p | | | i i
d j o | i | q. | d j o# | i | i | | | | n d } d } | i | q. W| d j o# | i | i | | | | n d i | S( s Refactors a docstring, looking for doctests.
This returns a modified version of the input string. It looks
for doctests, which start with a ">>>" prompt, and may be
continued with "..." prompts, as long as the "..." is indented
the same as the ">>>".
(Unfortunately we can't use the doctest module's parser,
since, like most parsers, it is not geared towards preserving
the original source.)
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splitlinesRW t lstripR t PS1R6 t refactor_doctestt findt PS2t rstripR R (
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7} q^n | S( s Refactors one doctest.
A doctest is given as a block of lines, the first of which starts
with ">>>" (possibly indented), while the remaining lines start
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s+ Can't parse docstring in %s line %s: %s: %si ii ( t parse_blockR( t logt isEnabledForRs t DEBUGR R R R R R R R RW R R t popR ( R~ R R R R R R R R t clippedRB ( ( s& /usr/lib/python2.6/lib2to3/refactor.pyR s& ! 8c C s' | i o
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need to bes No files %s modified.s Files that %s modified:s$ Warnings/messages while refactoring:i s There was 1 error:s There were %d errors:( Rv R} R Ru Rr R ( R~ R t filet messageR R R ( ( s& /usr/lib/python2.6/lib2to3/refactor.pyt summarize s*
c C s1 | i i | i | | | } t | _ | S( s Parses a block into a tree.
This is necessary to get correct line number / offset information
in the parser diagnostics and embedded into the parse tree.
( R t parse_tokenst wrap_toksRS R ( R~ R R R R ( ( s& /usr/lib/python2.6/lib2to3/refactor.pyR 1 s ! c c s t i | i | | i } xe | D]] \ } } \ } } \ } }
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f | f Vq% Wd S( s; Wraps a tokenize stream to systematically modify start/end.i N( R RP t gen_linesRL ( R~ R R R R5 R Rb t line0t col0t line1t col1t line_text( ( s& /usr/lib/python2.6/lib2to3/refactor.pyR ; s !c c s | | i } | | i } | } xm | D]e } | i | o | t | Vn7 | | i d j o d Vn t d | | f | } q' Wx t o d Vq Wd S( s Generates lines as expected by tokenize from a list of lines.
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