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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 find_root( t pytreet pygram( t btm_utils( t btm_matcherc C� sz t | g g d g � } g } xU t j | j � D]A \ } } } | j d � r1 | rb | d } n | j | � q1 q1 W| S( sE Return a sorted list of all available fix names in the given package.t *t fix_i ( t
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d | � � d S( sf Accepts a pytree Pattern Node and returns a set
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Return the fully qualified names for fixers in the package pkg_name.
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t j d � | _ g | _ t | _ t j | j d t j d | j �| _ | j � \ | _ | _ g | _ t j � | _ g | _ g | _ x} t! | j | j � D]f } | j" rT| j j# | � q2| | j k rv| j j$ | � q2| | j k r2| j j$ | � q2q2Wt% | j � | _& t% | j � | _' d S( s� Initializer.
Args:
fixer_names: a list of fixers to import
options: a dict with configuration.
explicit: a list of fixers to run even if they are explicit.
Rg Rh Rf t convertt loggerN(( t fixerst explicitt _default_optionst copyt optionsR! R' R t! python_grammar_no_print_statementt grammarR2 t getRh t errorst loggingt getLoggerRk t fixer_logR@ t wroteR t DriverR Rj t
get_fixerst pre_ordert
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c C� s� g } g } x�| j D]�} t | i i d g � } | j d d � d } | j | j � rr | t | j � } n | j d � } | j d j g | D] } | j � ^ q� � } y t
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� } | j d | � | j 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.
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R? i i����t _t s Can't find %s.%ss Skipping optional fixer: %ss Adding transformation: %st pret posts Illegal fixer order: %rt run_ordert key( Rl R t rsplitR t FILE_PREFIXt lent splitt CLASS_PREFIXt joint titlet getattrt AttributeErrorRd Rp Rw Rm RW t log_messaget log_debugt orderR t operatort
attrgettert sort( R� t pre_order_fixerst post_order_fixerst fix_mod_patht modRB t partsR+ t
class_namet fix_classR; t key_func( ( s5 /opt/alt/python27/lib64/python2.7/lib2to3/refactor.pyRz � s8 /
c O� s � d S( s Called when an error occurs.N( ( R� t msgt argst kwds( ( s5 /opt/alt/python27/lib64/python2.7/lib2to3/refactor.pyt log_error s c G� s' | r | | } n | j j | � d S( s Hook to log a message.N( Rk t info( R� R� R� ( ( s5 /opt/alt/python27/lib64/python2.7/lib2to3/refactor.pyR� s
c G� s' | r | | } n | j j | � d S( N( Rk t debug( R� R� R� ( ( s5 /opt/alt/python27/lib64/python2.7/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( ( s5 /opt/alt/python27/lib64/python2.7/lib2to3/refactor.pyt print_output! s c C� sP xI | D]A } t j j | � r5 | j | | | � q | j | | | � q Wd S( s) Refactor a list of files and directories.N( RI t patht isdirt refactor_dirt
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c C� s� t j d } x� t j | � D]� \ } } } | j d | � | j � | j � xe | D]] } | j d � rW t j j | � d | k rW t j j | | � } | j | | | � qW qW Wg | D] }
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^ 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.
t pys Descending into %sR? i N(
RI t extsept walkR� R� R R� t splitextR� R� ( R� t dir_nameR� R� t py_extt dirpatht dirnamest filenamesR t fullnamet dn( ( s5 /opt/alt/python27/lib64/python2.7/lib2to3/refactor.pyR� / s
c C� s� y t | d � } Wn' t k
r< } | j d | | � d SXz t j | j � d } Wd | j � Xt | d d | �� } t | j
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Do our best to decode a Python source file correctly.
t rbs Can't open %s: %si NR* t encoding( NN( t opent IOErrorR� R! R t detect_encodingRR t closet _open_with_encodingRH t read( R� R� t ft errR� ( ( s5 /opt/alt/python27/lib64/python2.7/lib2to3/refactor.pyt _read_python_sourceC s c C� s | j | � \ } } | d k r% d S| d 7} | r� | j d | � | j | | � } | j sl | | k r� | j | | | | | � q� | j d | � nc | j | | � } | j s� | r� | j r� | j t | � d | d | d | �n | j d | � d S( s Refactors a file.Nu
s Refactoring doctests in %ss No doctest changes in %si����R� R� s No changes in %s( R� R! R� t refactor_docstringRh t processed_filet refactor_stringt was_changedt unicode( R� R� R� R� RG R� t outputt tree( ( s5 /opt/alt/python27/lib64/python2.7/lib2to3/refactor.pyR� S s
c C� s� t | � } d | k r* t j | j _ n zM y | j j | � } Wn0 t k
ru } | j d | | j j | � d SXWd | j | j _ X| | _
| j d | � | j | | � | 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 Rq R Rr t parse_stringR( R� t __class__R t future_featuresR� t
refactor_tree( R� t dataR R` R� R� ( ( s5 /opt/alt/python27/lib64/python2.7/lib2to3/refactor.pyR� j s c C� s� t j j � } | ro | j d � | j | d � } | j sI | | k r_ | j | d | � q� | j d � nS | j | d � } | j s� | r� | j r� | j t | � d | � n
| j d � d S( Ns Refactoring doctests in stdins <stdin>s No doctest changes in stdins No changes in stdin(
t syst stdinR� R� R� Rh R� R� R� R� ( R� R� RG R� R� ( ( s5 /opt/alt/python27/lib64/python2.7/lib2to3/refactor.pyt refactor_stdin� s
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C� s� x- t | j | j � D] } | j | | � q W| j | j | j � � | j | j | j � � | j j | j � � } x�t
| j � � rcx�| j j D]�} | | k r� | | r� | | j
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d t j j � n x[t | | � D]F} | | | k r9| | j | � n y t | � Wn t k
r]qn X| j r|| | j k r|qn | j | � } | r| j | | � } | d k rU| j | � x9 | j � D]+ } | j s�g | _ n | j j | � q�W| j j | j � � } x? | D]4 } | | k r6g | | <n | | j | | � qWqUqqWq� q� Wq} Wx- t | j | j � D] } | j | | � qzW| j S( s� Refactors a parse tree (modifying the tree in place).
For compatible patterns the bottom matcher module is
used. Otherwise the tree is traversed node-to-node for
matches.
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� t reverseN(! R R{ R| t
start_treet traverse_byR� R� R� t runt leavest anyt valuesRl R� R t Baset depthRW t keep_line_ordert
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d Sxr | D]j } xa | | j D]R } | j | � } | r% | j | | � } | d k rw | j | � | } qw 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 R� R� R! RF ( R� Rl t traversalR� R; R� R� ( ( s5 /opt/alt/python27/lib64/python2.7/lib2to3/refactor.pyR� � s
c C� s� | j j | � | d k rB | j | � d } | d k rB d Sn | | k } | j | | | | � | r� | j d | � | j s� d Sn | r� | j | | | | � n | j d | � d S( sR
Called when a file has been refactored and there may be changes.
i Ns No changes to %ss Not writing changes to %s( R} R R! R� R� R� Rh t
write_file( R� R� R� R� R� R� R� ( ( s5 /opt/alt/python27/lib64/python2.7/lib2to3/refactor.pyR� � s c C� s� y t | d d | �} Wn* t j k
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r� } | j d | | � n XWd | j � X| j 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.
t wR� s Can't create %s: %sNs Can't write %s: %ss Wrote changes to %s(
R� RI t errorR� R� RK R� R� RW Rx ( R� R� R� R� R� R� R� ( ( s5 /opt/alt/python27/lib64/python2.7/lib2to3/refactor.pyR� s s >>> s ... c
C� s� g } d } d } d } d } x+| j t � D]} | d 7} | j � j | j � r� | d k r� | j | j | | | | � � n | } | g } | j | j � } | | } q. | d k r| j | | j � s� | | | j j
� d k r| j | � q. | d k r/| j | j | | | | � � n d } d } | j | � q. W| d k rz| j | j | | | | � � n d j | � 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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t � } | | d | | d } } | d g | d k s� t | � � | d j d � s | d c d 7<n | | j | j d � g } | ro| g | D] } | | j | ^ qK7} qon | 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
with "..." (identically indented).
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s+ Can't parse docstring in %s line %s: %s: %si i����i ( t parse_blockR( Rk t isEnabledForRu t DEBUGR� R R� R� R R� R� R� RW t AssertionErrort endswithR� t popR (
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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:( Rx R} R� Rw Rt R� ( R� R t filet messageR� R� R� ( ( s5 /opt/alt/python27/lib64/python2.7/lib2to3/refactor.pyt summarizep s$
c C� s1 | j j | j | | | � � } t � | _ | S( s� Parses a block into a tree.
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in the parser diagnostics and embedded into the parse tree.
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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( ( s5 /opt/alt/python27/lib64/python2.7/lib2to3/refactor.pyR � s
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This strips the first len(indent + self.PS1) characters off each line.
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s line=%r, prefix=%rR� N( R� R R R� R R RW ( R� R R t prefix1t prefix2t prefixR ( ( s5 /opt/alt/python27/lib64/python2.7/lib2to3/refactor.pyR � s
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