#!/usr/bin/python
# -*- coding: utf-8 -*-
# PythonTidy.py
# 2006 Oct 27 . ccr
'''PythonTidy.py cleans up, regularizes, and reformats the text of
Python scripts.
===========================================
Copyright © 2006 Charles Curtis Rhode
===========================================
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at
your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA.
===========================================
Charles Curtis Rhode,
1518 N 3rd, Sheboygan, WI 53081
mailto:CRhode@LacusVeris.com?subject=PythonTidy
===========================================
This script reads Python code from standard input and writes a revised
version to standard output.
Alternatively, it may be invoked with file names as arguments:
python PythonTidy.py input output
Suffice it to say that *input* defaults to \'-\', the standard input,
and *output* defaults to \'-\', the standard output.
It means to encapsulate the wisdom revealed in:
o Rossum, Guido van, and Barry Warsaw. "PEP 8: Style Guide for Python
Code." 23 Mar. 2006. Python.org. 28 Nov. 2006
<http://www.python.org/dev/peps/pep-0008/>.
Python scripts are usually so good looking that no beautification is
required. However, from time to time, it may be necessary to alter
the style to conform to changing standards. This script converts
programs in a consistent way. It abstracts the pretty presentation of
the symbolic code from the humdrum[1] process of writing it and
getting it to work.
This script assumes that the input Python code is well-formed and
works to begin with. It doesn\'t check. If all goes well, the output
Python code will work, too. Of course, you are advised to test it
fully to be sure.
This script should be run only by python.2.5 (and perhaps higher) on
scripts written for that version (and perhaps lower) because of its
limited knowledge of and expectations for the abstract syntax tree
node classes returned by the *compiler* module. It wouldn\'t hurt
much to try it from (and on) other versions, though, and it might
actually work.
Search this script for "Python Version Dependency."
Most of the Python 2.5 test suite passes through PythonTidy.py
unimpaired. Here are some tests that don\t:
test_cProfile.py
test_dis.py
test_doctest.py
test_grammar.py
test_inspect.py
test_pep263.py
test_profile.py
test_sys.py
test_trace.py
The more esoteric capabilities of PythonTidy.py had to be turned off
to avoid corrupting the test-suite code. In practice, you\'ll want to
run with PERSONAL = True (See, below.) to use all the functionality,
and of course you\'ll have the good taste to find and patch all the
glitches it introduces.
[1] "Humdrum: A low cart with three wheels, drawn by one horse." The
Collaborative International Dictionary of English v.0.48.
'''
from __future__ import division
DEBUG = False
PERSONAL = False
VERSION = '1.11' # 2007 Jan 22
# 2007 Jan 22 . v1.11 . ccr . This update implements a couple of
# well-taken user requests:
# Jens Diemer wants a module-level function, *tidy_up*, to accept file
# names or file-like objects.
# Wolfgang Grafen wants trailing spaces eliminated to avoid spurious
# differences with pre-tidied code.
# 2007 Jan 14 . v1.10 . ccr . There was a big problem with earlier
# versions: Canonical values were substituted for strings and numbers.
# For example, decimal integers were substituted for hexadecimal, and
# escaped strings for raw strings. Authors of Python scripts usually
# use peculiar notations for peculiar purposes, and doing away with
# them negatively impacts the readability of the code.
# This version preserves the original constants (parsed by *tokenize*)
# in a literal pool indexed by the value they evaluate to. The
# canonical values (output by *compiler*) are then translated back
# (when possible) to the original constants by looking them up in the
# literal pool.
# 2006 Dec 19 . v1.9 . ccr . If class name is a string, pass it to
# personal substitutions routine to distinguish module globals like
# gtk.VBox from class attributes like gtk.Dialog.vbox.
# 2006 Dec 17 . v1.8 . ccr . Trailing comma in function parameter list
# is not allowed in all cases. Catch substitutions that collide with
# built-ins.
# 2006 Dec 14 . v1.7 . ccr . Track line numbers on output.
# Write a "Name Substitutions Report" on stderr.
# 2006 Dec 13 . v1.6 . ccr . A *yield* may appear in parens when it is
# the subject of an assignment; otherwise, not.
# 2006 Dec 05 . v1.5 . ccr . Strings default to single quotes when
# DOUBLE_QUOTED_STRINGS = False. Pass the newline convention from
# input to output (transparently :-) ).
# 2006 Dec 01 . v1.4 . ccr . Tighten qualifications for in-line
# comments. Decode string nodes. Enclose docstrings in double
# quotes. Allow file-name arguments.
# 2006 Nov 30 . v1.3 . ccr . Safe check against names of *compiler* .
# abstract syntax tree nodes rather than their classes to step around
# one Python Version Dependency.
import sys
import os
import codecs
import StringIO
import re
if DEBUG:
import token
import tokenize
import compiler
ZERO = 0
SPACE = ' '
NULL = ''
NA = -1
APOST = "'"
# Old code is parsed. New code is generated from the parsed version,
# using these literals:
COL_LIMIT = 72
INDENTATION = ' '
ASSIGNMENT = ' = '
FUNCTION_PARAM_ASSIGNMENT = '='
FUNCTION_PARAM_SEP = ', '
LIST_SEP = ', '
SUBSCRIPT_SEP = ', '
DICT_COLON = ': '
SLICE_COLON = ':'
COMMENT_PREFIX = '#'
SHEBANG = '#!/usr/bin/python'
CODING = 'utf-8'
CODING_SPEC = '# -*- coding: %s -*-' % CODING
BLANK_LINE = NULL
KEEP_BLANK_LINES = True
ADD_BLANK_LINES_AROUND_COMMENTS = True
MAX_SEPS_BEFORE_SPLIT_LINE = 8
MAX_LINES_BEFORE_SPLIT_LIT = 2
LEFT_MARGIN = NULL
LEFTJUST_DOC_STRINGS = False
DOUBLE_QUOTED_STRINGS = False # 2006 Dec 05
RECODE_STRINGS = False # 2006 Dec 01
OVERRIDE_NEWLINE = None # 2006 Dec 05
# Repertoire of name-transformation functions:
def all_lower_case(str, **attribs):
return str.lower()
def all_upper_case(str, **attribs):
return str.upper()
def title_case(str, **attribs):
return str.title()
def strip_underscores(str, **attribs):
return str.replace('_', NULL)
def insert_underscores(str, **attribs):
return UNDERSCORE_PATTERN.sub('_\\1', str)
def is_magic(str):
return str in ['self', 'cls'] or str.startswith('__') and str.endswith('__')
def underscore_to_camel_case(str, **attribs):
if is_magic(str):
return str
else:
return strip_underscores(title_case(camel_case_to_underscore(str)))
def camel_case_to_underscore(str, **attribs):
if is_magic(str):
return str
else:
return all_lower_case(insert_underscores(str))
def unmangle(str, **attribs):
if str.startswith('__'):
str = str[2:]
return str
def munge(str, **attribs):
"""Create an unparsable name.
"""
return '<*%s*>' % str
def substitutions(str, **attribs):
result = SUBSTITUTE_FOR.get(str, str)
module = attribs.get('module') # 2006 Dec 19
if module is None:
pass
else:
result = SUBSTITUTE_FOR.get('%s.%s' % (module, str), result)
return result
def elide_c(str, **attribs):
return ELIDE_C_PATTERN.sub('\\1', str)
def elide_a(str, **attribs):
return ELIDE_A_PATTERN.sub('\\1', str)
def elide_f(str, **attribs):
return ELIDE_F_PATTERN.sub('\\1', str)
# Name-transformation scripts:
LOCAL_NAME_SCRIPT = []
GLOBAL_NAME_SCRIPT = []
CLASS_NAME_SCRIPT = []
FUNCTION_NAME_SCRIPT = []
# It is not wise to monkey with the
# spelling of function names (methods)
# where they are defined unless you are
# willing to change their spelling where
# they are referred to as class
# attributes, too.
FORMAL_PARAM_NAME_SCRIPT = []
# It is not wise to monkey with the
# spelling of formal parameters for fear
# of changing those of functions
# (methods) defined in other modules.
ATTR_NAME_SCRIPT = []
# It is not wise to monkey with the
# spelling of attributes (methods) for
# fear of changing those of classes
# defined in other modules.
# Author's preferences:
if PERSONAL:
LEFTJUST_DOC_STRINGS = True
LOCAL_NAME_SCRIPT.extend([unmangle, camel_case_to_underscore])
GLOBAL_NAME_SCRIPT.extend([unmangle, camel_case_to_underscore,
all_upper_case])
CLASS_NAME_SCRIPT.extend([elide_c, underscore_to_camel_case])
FUNCTION_NAME_SCRIPT.extend([camel_case_to_underscore])
FORMAL_PARAM_NAME_SCRIPT.extend([elide_a, camel_case_to_underscore])
ATTR_NAME_SCRIPT.extend([elide_f, camel_case_to_underscore,
substitutions])
# Other global constants:
UNDERSCORE_PATTERN = re.compile('(?<=[a-z])([A-Z])')
COMMENT_PATTERN = re.compile('#')
SHEBANG_PATTERN = re.compile('#!')
CODING_PATTERN = re.compile('coding[=:]\\s*([.\\w\\-_]+)')
NEW_LINE_PATTERN = re.compile('(?<!\\\\)\\\\n')
UNIVERSAL_NEW_LINE_PATTERN = re.compile(r'((?:\r\n)|(?:\r)|(?:\n))')
QUOTE_PATTERN = re.compile(r'([rRuU]{,2})((?:""")|(?:%s)|(?:")|(?:%s))((?:%s)|(?:\\%s)|)' \
% (APOST * 3, APOST, APOST, APOST)) # 2006 Jan 14
ELIDE_C_PATTERN = re.compile('^c([A-Z])')
ELIDE_A_PATTERN = re.compile('^a([A-Z])')
ELIDE_F_PATTERN = re.compile('^f([A-Z])')
SUBSTITUTE_FOR = {
'abday_1':'ABDAY_1',
'abday_2':'ABDAY_2',
'abday_3':'ABDAY_3',
'abday_4':'ABDAY_4',
'abday_5':'ABDAY_5',
'abday_6':'ABDAY_6',
'abday_7':'ABDAY_7',
'abmon_1':'ABMON_1',
'abmon_10':'ABMON_10',
'abmon_11':'ABMON_11',
'abmon_12':'ABMON_12',
'abmon_2':'ABMON_2',
'abmon_3':'ABMON_3',
'abmon_4':'ABMON_4',
'abmon_5':'ABMON_5',
'abmon_6':'ABMON_6',
'abmon_7':'ABMON_7',
'abmon_8':'ABMON_8',
'abmon_9':'ABMON_9',
'accel_group': 'AccelGroup',
'action_default': 'ACTION_DEFAULT',
'action_copy': 'ACTION_COPY',
'align_left': 'ALIGN_LEFT',
'align_right': 'ALIGN_RIGHT',
'align_center': 'ALIGN_CENTER',
'alignment': 'Alignment',
'button_press': 'BUTTON_PRESS',
'button_press_mask': 'BUTTON_PRESS_MASK',
'buttons_cancel': 'BUTTONS_CANCEL',
'can_default': 'CAN_DEFAULT',
'can_focus': 'CAN_FOCUS',
'cell_renderer_pixbuf': 'CellRendererPixbuf',
'cell_renderer_text': 'CellRendererText',
'check_button': 'CheckButton',
'child_nodes': 'childNodes',
'color': 'Color',
'config_parser': 'ConfigParser',
'cursor': 'Cursor',
'day_1':'DAY_1',
'day_2':'DAY_2',
'day_3':'DAY_3',
'day_4':'DAY_4',
'day_5':'DAY_5',
'day_6':'DAY_6',
'day_7':'DAY_7',
'dest_default_all': 'DEST_DEFAULT_ALL',
'dialog_modal': 'DIALOG_MODAL',
'dict_reader': 'DictReader',
'dict_writer': 'DictWriter',
'dir_tab_forward': 'DIR_TAB_FORWARD',
'dotall': 'DOTALL',
'dotall': 'DOTALL',
'enter_notify_mask': 'ENTER_NOTIFY_MASK',
'error': 'Error',
'event_box': 'EventBox',
'expand': 'EXPAND',
'exposure_mask': 'EXPOSURE_MASK',
'file_selection': 'FileSelection',
'fill': 'FILL',
'ftp': 'FTP',
'get_attribute': 'getAttribute',
'gtk.button': 'Button',
'gtk.combo': 'Combo',
'gtk.dialog': 'Dialog',
'gtk.entry': 'Entry',
'pixmap': 'Pixmap',
'gtk.image': 'Image',
'gtk.label': 'Label',
'gtk.menu': 'Menu',
'gtk.pack_end': 'PACK_END',
'gtk.pack_start': 'PACK_START',
'gtk.vbox': 'VBox',
'gtk.window': 'Window',
'hand2': 'HAND2',
'hbox': 'HBox',
'icon_size_button': 'ICON_SIZE_BUTTON',
'icon_size_dialog': 'ICON_SIZE_DIALOG',
'icon_size_dnd': 'ICON_SIZE_DND',
'icon_size_large_toolbar': 'ICON_SIZE_LARGE_TOOLBAR',
'icon_size_menu': 'ICON_SIZE_MENU',
'icon_size_small_toolbar': 'ICON_SIZE_SMALL_TOOLBAR',
'image_menu_item': 'ImageMenuItem',
'item_factory': 'ItemFactory',
'justify_center': 'JUSTIFY_CENTER',
'justify_fill': 'JUSTIFY_FILL',
'justify_left': 'JUSTIFY_LEFT',
'justify_right': 'JUSTIFY_RIGHT',
'list_item': 'ListItem',
'list_store': 'ListStore',
'menu_bar': 'MenuBar',
'message_dialog': 'MessageDialog',
'message_info': 'MESSAGE_INFO',
'mon_1':'MON_1',
'mon_10':'MON_10',
'mon_11':'MON_11',
'mon_12':'MON_12',
'mon_2':'MON_2',
'mon_3':'MON_3',
'mon_4':'MON_4',
'mon_5':'MON_5',
'mon_6':'MON_6',
'mon_7':'MON_7',
'mon_8':'MON_8',
'mon_9':'MON_9',
'multiline': 'MULTILINE',
'node_type': 'nodeType',
'notebook': 'Notebook',
'o_creat': 'O_CREAT',
'o_excl': 'O_EXCL',
'o_ndelay': 'O_NDELAY',
'o_rdwr': 'O_RDWR',
'p_nowait':'P_NOWAIT',
'parsing_error': 'ParsingError',
'pointer_motion_mask': 'POINTER_MOTION_MASK',
'pointer_motion_hint_mask': 'POINTER_MOTION_HINT_MASK',
'policy_automatic': 'POLICY_AUTOMATIC',
'policy_never': 'POLICY_NEVER',
'radio_button': 'RadioButton',
'realized': 'REALIZED',
'relief_none': 'RELIEF_NONE',
'request':'Request',
'response_cancel': 'RESPONSE_CANCEL',
'response_delete_event': 'RESPONSE_DELETE_EVENT',
'response_no': 'RESPONSE_NO',
'response_none': 'RESPONSE_NONE',
'response_ok': 'RESPONSE_OK',
'response_yes': 'RESPONSE_YES',
'scrolled_window': 'ScrolledWindow',
'shadow_in': 'SHADOW_IN',
'sniffer': 'Sniffer',
'sort_ascending': 'SORT_ASCENDING',
'sort_descending': 'SORT_DESCENDING',
'state_normal': 'STATE_NORMAL',
'stock_add': 'STOCK_ADD',
'stock_apply': 'STOCK_APPLY',
'stock_bold': 'STOCK_BOLD',
'stock_cancel': 'STOCK_CANCEL',
'stock_close': 'STOCK_CLOSE',
'stock_convert': 'STOCK_CONVERT',
'stock_copy': 'STOCK_COPY',
'stock_cut': 'STOCK_CUT',
'stock_dialog_info': 'STOCK_DIALOG_INFO',
'stock_dialog_info': 'STOCK_DIALOG_INFO',
'stock_dialog_question': 'STOCK_DIALOG_QUESTION',
'stock_execute': 'STOCK_EXECUTE',
'stock_find': 'STOCK_FIND',
'stock_find_and_replace': 'STOCK_FIND_AND_REPLACE',
'stock_go_back': 'STOCK_GO_BACK',
'stock_go_forward': 'STOCK_GO_FORWARD',
'stock_help': 'STOCK_HELP',
'stock_index': 'STOCK_INDEX',
'stock_jump_to': 'STOCK_JUMP_TO',
'stock_new': 'STOCK_NEW',
'stock_no': 'STOCK_NO',
'stock_ok': 'STOCK_OK',
'stock_open': 'STOCK_OPEN',
'stock_paste': 'STOCK_PASTE',
'stock_preferences': 'STOCK_PREFERENCES',
'stock_print_preview': 'STOCK_PRINT_PREVIEW',
'stock_quit': 'STOCK_QUIT',
'stock_refresh': 'STOCK_REFRESH',
'stock_remove': 'STOCK_REMOVE',
'stock_save': 'STOCK_SAVE',
'stock_save_as': 'STOCK_SAVE_AS',
'stock_yes': 'STOCK_YES',
'string_io': 'StringIO',
'style_italic': 'STYLE_ITALIC',
'sunday': 'SUNDAY',
'tab': 'Tab',
'tab_array': 'TabArray',
'tab_left': 'TAB_LEFT',
'table': 'Table',
'target_same_app': 'TARGET_SAME_APP',
'target_same_widget': 'TARGET_SAME_WIDGET',
'text_iter': 'TextIter',
'text_node': 'TEXT_NODE',
'text_tag': 'TextTag',
'text_view': 'TextView',
'text_window_text': 'TEXT_WINDOW_TEXT',
'text_window_widget': 'TEXT_WINDOW_WIDGET',
'text_wrapper':'TextWrapper',
'tooltips': 'Tooltips',
'tree_view': 'TreeView',
'tree_view_column': 'TreeViewColumn',
'type_string': 'TYPE_STRING',
'underline_single': 'UNDERLINE_SINGLE',
'weight_bold': 'WEIGHT_BOLD',
'window_toplevel': 'WINDOW_TOPLEVEL',
'wrap_none': 'WRAP_NONE',
'wrap_word': 'WRAP_WORD',
}
class InputUnit(object):
"""File-buffered wrapper for sys.stdin.
"""
def __init__(self, file_in):
object.__init__(self)
self.is_file_like = hasattr(file_in, 'read') # 2007 Jan 22
if self.is_file_like:
buffer = file_in.read() # 2006 Dec 05
else:
unit = open(os.path.expanduser(file_in), 'rb')
buffer = unit.read() # 2006 Dec 05
unit.close()
self.lines = UNIVERSAL_NEW_LINE_PATTERN.split(buffer) # 2006 Dec 05
if len(self.lines) > 2:
if OVERRIDE_NEWLINE is None:
self.newline = self.lines[1] # ... the first delimiter.
else:
self.newline = OVERRIDE_NEWLINE
look_ahead = '\n'.join([self.lines[ZERO],self.lines[2]])
else:
self.newline = '\n'
look_ahead = NULL
match = CODING_PATTERN.search(look_ahead)
if match is None:
self.coding = 'ascii'
else:
self.coding = match.group(1)
self.rewind() # 2006 Dec 05
return
def rewind(self): # 2006 Dec 05
self.ndx = ZERO
self.end = len(self.lines) - 1
return self
def next(self): # 2006 Dec 05
if self.ndx > self.end:
raise StopIteration
elif self.ndx == self.end:
result = self.lines[self.ndx]
else:
result = self.lines[self.ndx] + '\n'
self.ndx += 2
return result
def __iter__(self): # 2006 Dec 05
return self
def readline(self): # 2006 Dec 05
try:
result = self.next()
except StopIteration:
result = NULL
return result
def readlines(self): # 2006 Dec 05
self.rewind()
return [line for line in self]
def __str__(self): # 2006 Dec 05
return NULL.join(self.readlines())
def decode(self, str):
return str # It will not do to feed Unicode to *compiler.parse*.
class OutputUnit(object):
"""Line-buffered wrapper for sys.stdout.
"""
def __init__(self, file_out):
object.__init__(self)
self.is_file_like = hasattr(file_out, 'write') # 2007 Jan 22
if self.is_file_like:
self.unit = codecs.getwriter(CODING)(file_out)
else:
self.unit = codecs.open(os.path.expanduser(file_out), 'wb', CODING)
self.blank_line_count = 1
self.margin = LEFT_MARGIN
self.newline = INPUT.newline # 2006 Dec 05
self.lineno = ZERO # 2006 Dec 14
self.buffer = NULL
return
def close(self): # 2006 Dec 01
self.unit.write(self.buffer) # 2007 Jan 22
if self.is_file_like:
pass
else:
self.unit.close()
return self
def line_init(self, indent=ZERO, lineno=ZERO):
self.blank_line_count = ZERO
self.col = ZERO
if DEBUG:
margin = '%5i %s' % (lineno, INDENTATION * indent)
else:
margin = self.margin + INDENTATION * indent
self.tab_stack = []
self.tab_set(len(margin) + len(INDENTATION))
self.chunks = []
self.line_more(margin)
return self
def line_more(self, chunk=NULL, tab_set=False, tab_clear=False,
can_split_after=False, can_break_after=False):
self.chunks.append([chunk, tab_set, tab_clear, can_split_after,
can_break_after])
self.col += len(chunk)
return self
def line_term(self):
def is_split_needed():
width = len(chunk)
pos = self.pos
return pos + width > COL_LIMIT and pos > ZERO
self.pos = ZERO
can_split_before = False
can_break_before = False
for (chunk, tab_set, tab_clear, can_split_after, can_break_after) in \
self.chunks:
if is_split_needed():
if can_split_before:
self.line_split()
elif can_break_before:
self.line_break()
self.put(chunk) # 2006 Dec 14
self.pos += len(chunk)
if tab_set:
self.tab_set(self.pos)
if tab_clear:
self.tab_clear()
can_split_before = can_split_after
can_break_before = can_break_after
self.put(self.newline) # 2006 Dec 05
return self
def line_split(self):
self.put(self.newline) # 2006 Dec 05
self.pos = self.tab_forward()
return self
def line_break(self):
self.put('\\%s' % self.newline) # 2006 Dec 14
self.pos = self.tab_forward()
return self
def tab_forward(self):
if len(self.tab_stack) > 1:
col = (self.tab_stack)[1]
else:
col = (self.tab_stack)[ZERO]
self.put(SPACE * col) # 2006 Dec 14
return col
def put(self, text): # 2006 Dec 14
self.lineno += text.count(self.newline)
self.buffer += text # 2007 Jan 22
if self.buffer.endswith('\n'):
self.unit.write(self.buffer.rstrip())
self.unit.write('\n')
self.buffer = NULL
return self
def put_blank_line(self, trace, count=1):
count -= self.blank_line_count
while count > ZERO:
self.put(BLANK_LINE) # 2006 Dec 14
self.put(self.newline) # 2006 Dec 05
if DEBUG:
self.put(str(trace)) # 2006 Dec 14
self.blank_line_count += 1
count -= 1
return self
def tab_set(self, col):
if col > COL_LIMIT / 2:
col = (self.tab_stack)[-1] + 4
self.tab_stack.append(col)
return self
def tab_clear(self):
if len(self.tab_stack) > 1:
result = self.tab_stack.pop()
else:
result = None
return result
def inc_margin(self):
self.margin += INDENTATION
return self
def dec_margin(self):
self.margin = (self.margin)[:-len(INDENTATION)]
return self
class Comments(dict):
"""Collection of comments (blank lines) parsed out of the
input Python code and indexed by line number.
"""
def __init__(self):
self.literal_pool = {} # 2007 Jan 14
lines = tokenize.generate_tokens(INPUT.readline)
for (token_type, token_string, start, end, line) in lines:
if DEBUG:
print (token.tok_name)[token_type], token_string, start, \
end, line
(self.max_lineno, scol) = start
(erow, ecol) = end
if token_type in [tokenize.COMMENT, tokenize.NL]:
token_string = token_string.strip().decode(INPUT.coding)
if SHEBANG_PATTERN.match(token_string) is not None:
pass
elif CODING_PATTERN.search(token_string) is not None and \
self.max_lineno <= 2:
pass
else:
token_string = COMMENT_PATTERN.sub(COMMENT_PREFIX,
token_string, 1)
self[self.max_lineno] = [scol, token_string]
elif token_type in [tokenize.NUMBER, tokenize.STRING]: # 2007 Jan 14
try:
token_string = token_string.strip().decode(INPUT.coding, 'backslashreplace')
canonical_value = repr(eval(token_string))
if canonical_value == token_string:
pass
else:
original_values = self.literal_pool.setdefault(canonical_value, [])
for (token, lineno) in original_values: # 2007 Jan 17
if token == token_string:
break
else:
original_values.append([token_string, self.max_lineno])
except:
pass
self.prev_lineno = NA
self[self.prev_lineno] = (ZERO, SHEBANG)
self[ZERO] = (ZERO, CODING_SPEC)
return
def merge(self, lineno=None, fin=False):
def is_blank():
return token_string in [NULL, BLANK_LINE]
def is_blank_line_needed():
return ADD_BLANK_LINES_AROUND_COMMENTS and not (is_blank() and
KEEP_BLANK_LINES)
if fin:
lineno = self.max_lineno + 1
on1 = True
found = False
while self.prev_lineno < lineno:
if self.prev_lineno in self:
(scol, token_string) = self[self.prev_lineno]
if on1 and is_blank_line_needed():
OUTPUT.put_blank_line(1)
if is_blank():
if KEEP_BLANK_LINES:
OUTPUT.put_blank_line(2)
else:
OUTPUT.line_init().line_more('%s%s' % (SPACE * scol,
token_string)).line_term()
found = True
on1 = False
self.prev_lineno += 1
if found and is_blank_line_needed() and not fin:
OUTPUT.put_blank_line(3)
return self
def put_inline(self, lineno):
on1 = True
while self.prev_lineno <= lineno:
if self.prev_lineno in self:
(scol, token_string) = self[self.prev_lineno]
if token_string in [NULL]:
pass
else:
if on1:
OUTPUT.line_more(SPACE * 2)
col = OUTPUT.col
else:
OUTPUT.line_init().line_more(SPACE * col)
OUTPUT.line_more(token_string).line_term()
on1 = False
self.prev_lineno += 1
if on1:
OUTPUT.line_term()
return self
class Name(list): # 2006 Dec 14
"""Maps new name to old names.
"""
def __init__(self, new):
self.new = new
self.is_reported = False
return
def append(self, item):
if item in self:
pass
else:
list.append(self, item)
return
def rept_collision(self, key):
self.append(key) # 2006 Dec 17
if len(self) == 1:
pass
elif self.is_reported:
pass
else:
sys.stderr.write("Error: %s ambiguously replaced by '%s' at line %i.\n" % \
(str(self), self.new, OUTPUT.lineno + 1))
self.is_reported = True
return self
def rept_external(self, expr):
if isinstance(expr, NodeName):
expr = expr.name.str
else:
expr = str(expr)
if expr in ['self','cls']:
pass
elif self.new == self[ZERO]:
pass
else:
sys.stderr.write("Warning: '%s.%s,' defined elsewhere, replaced by '.%s' at line %i.\n" % \
(expr, self[ZERO], self.new, OUTPUT.lineno + 1))
return self
class NameSpace(list):
"""Dictionary of names (variables).
Actually a list of dictionaries. The current scope is the top one
(ZEROth member).
"""
def push_scope(self):
self.insert(ZERO, {})
return self
def pop_scope(self):
return self.pop(ZERO)
def make_name(self, name, rules):
name = name.get_as_str()
key = name
for rule in rules:
name = rule(name)
name = self[ZERO].setdefault(name,Name(name)) # 2006 Dec 14
self[ZERO].setdefault(key,name)
name.append(key)
return name
def make_local_name(self, name):
if self.is_global():
result = self.make_global_name(name)
else:
result = self.make_name(name, LOCAL_NAME_SCRIPT)
return result
def make_global_name(self, name):
return self.make_name(name, GLOBAL_NAME_SCRIPT)
def make_class_name(self, name):
return self.make_name(name, CLASS_NAME_SCRIPT)
def make_function_name(self, name):
return self.make_name(name, FUNCTION_NAME_SCRIPT)
def make_formal_param_name(self, name):
return self.make_name(name, FORMAL_PARAM_NAME_SCRIPT)
def make_imported_name(self, name):
return self.make_name(name, [])
def make_attr_name(self, expr, name):
if isinstance(expr, NodeName): # 2006 Dec 19
module = expr.name.str
else:
module = None
name = name.get_as_str()
key = name
for rule in ATTR_NAME_SCRIPT:
name = rule(name, module=module) # 2006 Dec 19
name = Name(name) # 2006 Dec 14
name.append(key)
name.rept_external(expr)
return name.new
def make_keyword_name(self, name):
name = name.get_as_str()
key = name
for rule in FORMAL_PARAM_NAME_SCRIPT:
name = rule(name)
name = Name(name) # 2006 Dec 14
name.append(key)
return name.new
def get_name(self, node):
name = key = node.get_as_str() # 2006 Dec 17
for scope in self:
if key in scope:
name = scope[key]
name.rept_collision(key) # 2006 Dec 14
name = name.new
break
return name
def has_name(self, node):
name = node.get_as_str()
return name in self[ZERO]
def is_global(self):
return len(self) == 1
def transform(indent, lineno, node):
"""Convert the nodes in the abstract syntax tree returned by the
*compiler* module to objects with *put* methods.
The kinds of nodes are a Python Version Dependency.
"""
def isinstance_(node, class_name): # 2006 Nov 30
"""Safe check against name of a node class rather than the
class itself, which may or may not be supported at the current
Python version.
"""
class_ = getattr(compiler.ast, class_name, None)
if class_ is None:
result = False
else:
result = isinstance(node, class_)
return result
if isinstance_(node, 'Node') and node.lineno is not None:
lineno = node.lineno
if isinstance_(node, 'Add'):
result = NodeAdd(indent, lineno, node.left, node.right)
elif isinstance_(node, 'And'):
result = NodeAnd(indent, lineno, node.nodes)
elif isinstance_(node, 'AssAttr'):
result = NodeAsgAttr(indent, lineno, node.expr, node.attrname,
node.flags)
elif isinstance_(node, 'AssList'):
result = NodeAsgList(indent, lineno, node.nodes)
elif isinstance_(node, 'AssName'):
result = NodeAsgName(indent, lineno, node.name, node.flags)
elif isinstance_(node, 'AssTuple'):
result = NodeAsgTuple(indent, lineno, node.nodes)
elif isinstance_(node, 'Assert'):
result = NodeAssert(indent, lineno, node.test, node.fail)
elif isinstance_(node, 'Assign'):
result = NodeAssign(indent, lineno, node.nodes, node.expr)
elif isinstance_(node, 'AugAssign'):
result = NodeAugAssign(indent, lineno, node.node, node.op, node.expr)
elif isinstance_(node, 'Backquote'):
result = NodeBackquote(indent, lineno, node.expr)
elif isinstance_(node, 'Bitand'):
result = NodeBitAnd(indent, lineno, node.nodes)
elif isinstance_(node, 'Bitor'):
result = NodeBitOr(indent, lineno, node.nodes)
elif isinstance_(node, 'Bitxor'):
result = NodeBitXor(indent, lineno, node.nodes)
elif isinstance_(node, 'Break'):
result = NodeBreak(indent, lineno)
elif isinstance_(node, 'CallFunc'):
result = NodeCallFunc(indent, lineno, node.node, node.args, node.star_args,
node.dstar_args)
elif isinstance_(node, 'Class'):
result = NodeClass(indent, lineno, node.name, node.bases, node.doc,
node.code)
elif isinstance_(node, 'Compare'):
result = NodeCompare(indent, lineno, node.expr, node.ops)
elif isinstance_(node, 'Const'):
result = NodeConst(indent, lineno, node.value)
elif isinstance_(node, 'Continue'):
result = NodeContinue(indent, lineno)
elif isinstance_(node, 'Decorators'):
result = NodeDecorators(indent, lineno, node.nodes)
elif isinstance_(node, 'Dict'):
result = NodeDict(indent, lineno, node.items)
elif isinstance_(node, 'Discard'):
result = NodeDiscard(indent, lineno, node.expr)
elif isinstance_(node, 'Div'):
result = NodeDiv(indent, lineno, node.left, node.right)
elif isinstance_(node, 'Ellipsis'):
result = NodeEllipsis(indent, lineno)
elif isinstance_(node, 'Exec'):
result = NodeExec(indent, lineno, node.expr, node.locals, node.globals)
elif isinstance_(node, 'FloorDiv'):
result = NodeFloorDiv(indent, lineno, node.left, node.right)
elif isinstance_(node, 'For'):
result = NodeFor(indent, lineno, node.assign, node.list, node.body,
node.else_)
elif isinstance_(node, 'From'):
result = NodeFrom(indent, lineno, node.modname, node.names)
elif isinstance_(node, 'Function'):
result = NodeFunction(
indent,
lineno,
getattr(node, 'decorators', None),
node.name,
node.argnames,
node.defaults,
node.flags,
node.doc,
node.code,
)
elif isinstance_(node, 'GenExpr'):
result = NodeGenExpr(indent, lineno, node.code)
elif isinstance_(node, 'GenExprFor'):
result = NodeGenExprFor(indent, lineno, node.assign, node.iter,
node.ifs)
elif isinstance_(node, 'GenExprIf'):
result = NodeGenExprIf(indent, lineno, node.test)
elif isinstance_(node, 'GenExprInner'):
result = NodeGenExprInner(indent, lineno, node.expr, node.quals)
elif isinstance_(node, 'Getattr'):
result = NodeGetAttr(indent, lineno, node.expr, node.attrname)
elif isinstance_(node, 'Global'):
result = NodeGlobal(indent, lineno, node.names)
elif isinstance_(node, 'If'):
result = NodeIf(indent, lineno, node.tests, node.else_)
elif isinstance_(node, 'IfExp'):
result = NodeIfExp(indent, lineno, node.test, node.then, node.else_)
elif isinstance_(node, 'Import'):
result = NodeImport(indent, lineno, node.names)
elif isinstance_(node, 'Invert'):
result = NodeInvert(indent, lineno, node.expr)
elif isinstance_(node, 'Keyword'):
result = NodeKeyword(indent, lineno, node.name, node.expr)
elif isinstance_(node, 'Lambda'):
result = NodeLambda(indent, lineno, node.argnames, node.defaults,
node.flags, node.code)
elif isinstance_(node, 'LeftShift'):
result = NodeLeftShift(indent, lineno, node.left, node.right)
elif isinstance_(node, 'List'):
result = NodeList(indent, lineno, node.nodes)
elif isinstance_(node, 'ListComp'):
result = NodeListComp(indent, lineno, node.expr, node.quals)
elif isinstance_(node, 'ListCompFor'):
result = NodeListCompFor(indent, lineno, node.assign, node.list,
node.ifs)
elif isinstance_(node, 'ListCompIf'):
result = NodeListCompIf(indent, lineno, node.test)
elif isinstance_(node, 'Mod'):
result = NodeMod(indent, lineno, node.left, node.right)
elif isinstance_(node, 'Module'):
result = NodeModule(indent, lineno, node.doc, node.node)
elif isinstance_(node, 'Mul'):
result = NodeMul(indent, lineno, node.left, node.right)
elif isinstance_(node, 'Name'):
result = NodeName(indent, lineno, node.name)
elif isinstance_(node, 'Not'):
result = NodeNot(indent, lineno, node.expr)
elif isinstance_(node, 'Or'):
result = NodeOr(indent, lineno, node.nodes)
elif isinstance_(node, 'Pass'):
result = NodePass(indent, lineno)
elif isinstance_(node, 'Power'):
result = NodePower(indent, lineno, node.left, node.right)
elif isinstance_(node, 'Print'):
result = NodePrint(indent, lineno, node.nodes, node.dest)
elif isinstance_(node, 'Printnl'):
result = NodePrintnl(indent, lineno, node.nodes, node.dest)
elif isinstance_(node, 'Raise'):
result = NodeRaise(indent, lineno, node.expr1, node.expr2, node.expr3)
elif isinstance_(node, 'Return'):
result = NodeReturn(indent, lineno, node.value)
elif isinstance_(node, 'RightShift'):
result = NodeRightShift(indent, lineno, node.left, node.right)
elif isinstance_(node, 'Slice'):
result = NodeSlice(indent, lineno, node.expr, node.flags, node.lower,
node.upper)
elif isinstance_(node, 'Sliceobj'):
result = NodeSliceobj(indent, lineno, node.nodes)
elif isinstance_(node, 'Stmt'):
result = NodeStmt(indent, lineno, node.nodes)
elif isinstance_(node, 'Sub'):
result = NodeSub(indent, lineno, node.left, node.right)
elif isinstance_(node, 'Subscript'):
result = NodeSubscript(indent, lineno, node.expr, node.flags,
node.subs)
elif isinstance_(node, 'TryExcept'):
result = NodeTryExcept(indent, lineno, node.body, node.handlers,
node.else_)
elif isinstance_(node, 'TryFinally'):
result = NodeTryFinally(indent, lineno, node.body, node.final)
elif isinstance_(node, 'Tuple'):
result = NodeTuple(indent, lineno, node.nodes)
elif isinstance_(node, 'UnaryAdd'):
result = NodeUnaryAdd(indent, lineno, node.expr)
elif isinstance_(node, 'UnarySub'):
result = NodeUnarySub(indent, lineno, node.expr)
elif isinstance_(node, 'While'):
result = NodeWhile(indent, lineno, node.test, node.body, node.else_)
elif isinstance_(node, 'With'):
result = NodeWith(indent, lineno, node.expr, node.vars, node.body)
elif isinstance_(node, 'Yield'):
result = NodeYield(indent, lineno, node.value)
elif isinstance(node, basestring):
result = NodeStr(indent, lineno, node)
elif isinstance(node, int):
result = NodeInt(indent, lineno, node)
else:
result = node
return result
class Node(object):
"""Parent of parsed tokens.
"""
tag = 'Generic node'
def __init__(self, indent, lineno):
object.__init__(self)
self.indent = indent
self.lineno = lineno
if DEBUG:
sys.stderr.write('%5i %s\n' % (self.lineno, self.tag))
return
def line_init(self, need_blank_line=ZERO):
COMMENTS.merge(self.get_lineno())
OUTPUT.put_blank_line(4, count=need_blank_line)
OUTPUT.line_init(self.indent, self.get_lineno())
return self
def line_more(self, chunk, tab_set=False, tab_clear=False,
can_split_after=False, can_break_after=False):
OUTPUT.line_more(chunk, tab_set, tab_clear, can_split_after,
can_break_after)
return self
def line_term(self, lineno=ZERO):
lineno = max(self.get_hi_lineno(), self.get_lineno()) # , lineno) # 2006 Dec 01
COMMENTS.put_inline(lineno)
return self
def put(self, can_split=False):
'''Place self on output.
For the "Generic" node, this is abstract. A Generic node *is*
instantiated for nodes of unrecognized type, and we don\'t
know what to do for them, so we just place a string on output
that should force an error when Python is used to interpret
the result.
'''
self.line_more(' /* %s at line %i */ ' % (self.tag, self.get_lineno()))
return self
def get_lineno(self):
return self.lineno
def get_hi_lineno(self):
return self.get_lineno()
def inc_margin(self):
OUTPUT.inc_margin()
return self
def dec_margin(self):
OUTPUT.dec_margin()
return self
def marshal_names(self):
return self
def make_local_name(self):
return self
class NodeOpr(Node):
"""Operator.
"""
tag = 'Opr'
is_commutative = True
def put_expr(self, node, can_split=False):
if type(node) in OPERATOR_TRUMPS[type(self)] or type(node) in \
OPERATOR_LEVEL[type(self)] and not self.is_commutative:
self.line_more('(', tab_set=True)
node.put(can_split=True)
self.line_more(')', tab_clear=True)
else:
node.put(can_split=can_split)
return self
class NodeStr(Node):
"""String value.
"""
tag = 'Str'
def __init__(self, indent, lineno, str):
Node.__init__(self, indent, lineno)
self.set_as_str(str)
return
def put(self, can_split=False):
self.line_more(self.get_as_str())
return self
def get_as_str(self):
return self.str
def set_as_str(self, str_):
self.str = str_
if isinstance(self.str, unicode):
pass
elif not RECODE_STRINGS: # 2006 Dec 01
pass
else:
try:
self.str = self.str.decode(INPUT.coding)
except UnicodeError:
pass
try:
self.str = str(self.str)
except UnicodeError:
pass
return self
def put_doc(self, need_blank_line=ZERO):
doc = self.get_as_str()
if LEFTJUST_DOC_STRINGS:
doc = doc.strip()
lines = doc.splitlines()
lines = [line.strip() for line in lines]
lines.extend([NULL, NULL])
margin = '%s%s' % (OUTPUT.newline, INDENTATION * self.indent) # 2006 Dec 05
doc = margin.join(lines)
self.line_init(need_blank_line=need_blank_line) # 2006 Dec 01
quoted = self.force_double_quote(doc)
lines = NEW_LINE_PATTERN.split(quoted)
quoted = OUTPUT.newline.join(lines) # 2006 Dec 05
self.put_multi_line(quoted)
self.line_term()
OUTPUT.put_blank_line(5)
return self
def force_double_quote(self, lit): # 2006 Dec 01
lit = repr("'" + lit)
match = QUOTE_PATTERN.match(lit)
(prefix, quote, apost) = match.group(1, 2, 3)
if (quote, apost) == ("'", "\\'"):
pass
elif (quote, apost) == ("'''", "\\'"): # 2007 Jan 14
pass
elif (quote, apost) == ('"', "'"):
pass
elif (quote, apost) == ('"""', "'"): # 2007 Jan 14
pass
else:
raise NotImplementedError
lit = QUOTE_PATTERN.sub(prefix + quote, lit, 1)
return lit
def put_lit(self):
lit = self.get_as_str()
result = repr(lit)
original_values = COMMENTS.literal_pool.get(result, []) # 2007 Jan 14
if len(original_values) == 1:
(lit, lineno) = original_values[ZERO]
else:
if DOUBLE_QUOTED_STRINGS: # 2006 Dec 05
lit = self.force_double_quote(lit)
else:
lit = result
lines = NEW_LINE_PATTERN.split(lit)
if len(lines) > MAX_LINES_BEFORE_SPLIT_LIT:
lit = OUTPUT.newline.join(lines) # 2006 Dec 05
self.put_multi_line(lit)
else:
self.line_more(lit)
return self
def put_multi_line(self, lit): # 2006 Dec 01
match = QUOTE_PATTERN.match(lit)
(prefix, quote, apost) = match.group(1, 2, 3)
if len(quote) == 3: # 2006 Jan 14
head = prefix + quote + apost
tail = NULL
else:
head = prefix + quote * 3 + apost
tail = quote * 2
lit = QUOTE_PATTERN.sub(head, lit, 1) + tail
self.line_more(lit)
return self
class NodeInt(Node):
"""Integer value.
"""
tag = 'Int'
def __init__(self, indent, lineno, int):
Node.__init__(self, indent, lineno)
self.int = int
return
def put(self, can_split=False):
self.line_more(self.get_as_repr())
return self
def get_as_repr(self):
result = repr(self.int)
original_values = COMMENTS.literal_pool.get(result, []) # 2006 Jan 14
if len(original_values) == 1:
(result, lineno) = original_values[ZERO]
return result
class NodeAdd(NodeOpr):
"""Add operation.
"""
tag = 'Add'
def __init__(self, indent, lineno, left, right):
Node.__init__(self, indent, lineno)
self.left = transform(indent, lineno, left)
self.right = transform(indent, lineno, right)
return
def put(self, can_split=False):
self.put_expr(self.left, can_split=can_split)
self.line_more(' + ', can_split_after=can_split, can_break_after=
True)
self.put_expr(self.right, can_split=can_split)
return self
def get_hi_lineno(self):
return self.right.get_hi_lineno()
class NodeAnd(NodeOpr):
'''Logical "and" operation.
'''
tag = 'And'
def __init__(self, indent, lineno, nodes):
Node.__init__(self, indent, lineno)
self.nodes = [transform(indent, lineno, node) for node in nodes]
return
def put(self, can_split=False):
for node in (self.nodes)[:1]:
self.put_expr(node, can_split=can_split)
for node in (self.nodes)[1:]:
self.line_more(' and ', can_split_after=can_split,
can_break_after=True)
self.put_expr(node, can_split=can_split)
return self
def get_hi_lineno(self):
return (self.nodes)[-1].get_hi_lineno()
class NodeAsgAttr(NodeOpr):
"""Assignment to a class attribute.
"""
tag = 'AsgAttr'
def __init__(self, indent, lineno, expr, attrname, flags):
Node.__init__(self, indent, lineno)
self.expr = transform(indent, lineno, expr)
self.attrname = transform(indent, lineno, attrname)
self.flags = transform(indent, lineno, flags)
return
def put(self, can_split=False):
is_del = self.flags.get_as_str() in ['OP_DELETE']
if is_del:
self.line_init()
self.line_more('del ')
if isinstance(self.expr, NodeConst):
self.line_more('(')
self.expr.put(can_split=True)
self.line_more(')')
else:
self.put_expr(self.expr, can_split=can_split)
self.line_more('.')
self.line_more(NAME_SPACE.make_attr_name(self.expr, self.attrname))
if DEBUG:
self.line_more(' /* AsgAttr flags: ')
self.flags.put()
self.line_more(' */ ')
if is_del:
self.line_term()
return self
def get_hi_lineno(self):
return self.expr.get_hi_lineno()
class NodeAsgList(Node):
"""A list as a destination of an assignment operation.
"""
tag = 'AsgList'
def __init__(self, indent, lineno, nodes):
Node.__init__(self, indent, lineno)
self.nodes = [transform(indent, lineno, node) for node in nodes]
return
def put(self, can_split=False):
self.line_more('[', tab_set=True)
if len(self.nodes) > MAX_SEPS_BEFORE_SPLIT_LINE:
self.line_term()
self.inc_margin()
for node in self.nodes:
self.line_init()
node.put(can_split=True)
self.line_more(LIST_SEP)
self.line_term()
self.line_init()
self.dec_margin()
else:
for node in (self.nodes)[:1]:
node.put(can_split=True)
self.line_more(LIST_SEP, can_split_after=True)
for node in (self.nodes)[1:2]:
node.put(can_split=True)
for node in (self.nodes)[2:]:
self.line_more(LIST_SEP, can_split_after=True)
node.put(can_split=True)
self.line_more(']', tab_clear=True)
return self
def make_local_name(self):
for node in self.nodes:
node.make_local_name()
return self
def get_hi_lineno(self):
return node[-1].get_hi_lineno()
class NodeAsgName(Node):
"""Destination of an assignment operation.
"""
tag = 'AsgName'
def __init__(self, indent, lineno, name, flags):
Node.__init__(self, indent, lineno)
self.name = transform(indent, lineno, name)
self.flags = transform(indent, lineno, flags)
return
def put(self, can_split=False):
is_del = self.flags.get_as_str() in ['OP_DELETE']
if is_del:
self.line_init()
self.line_more('del ')
self.line_more(NAME_SPACE.get_name(self.name))
if DEBUG:
self.line_more(' /* AsgName flags: ')
self.flags.put()
self.line_more(' */ ')
if is_del:
self.line_term()
return self
def make_local_name(self):
if NAME_SPACE.has_name(self.name):
pass
else:
NAME_SPACE.make_local_name(self.name)
return self
def get_hi_lineno(self):
return self.name.get_hi_lineno()
class NodeAsgTuple(Node):
"""A tuple as a destination of an assignment operation.
"""
tag = 'AsgTuple'
def __init__(self, indent, lineno, nodes):
Node.__init__(self, indent, lineno)
self.nodes = [transform(indent, lineno, node) for node in nodes]
return
def put(self, can_split=False):
self.line_more('(', tab_set=True)
if len(self.nodes) > MAX_SEPS_BEFORE_SPLIT_LINE:
self.line_term()
self.inc_margin()
for node in self.nodes:
self.line_init()
node.put(can_split=True)
self.line_more(LIST_SEP)
self.line_term()
self.line_init()
self.dec_margin()
else:
for node in (self.nodes)[:1]:
node.put(can_split=True)
self.line_more(LIST_SEP, can_split_after=True)
for node in (self.nodes)[1:2]:
node.put(can_split=True)
for node in (self.nodes)[2:]:
self.line_more(LIST_SEP, can_split_after=True)
node.put(can_split=True)
self.line_more(')', tab_clear=True)
return self
def make_local_name(self):
for node in self.nodes:
node.make_local_name()
return self
def get_hi_lineno(self):
return (self.nodes)[-1].get_hi_lineno()
class NodeAssert(Node):
"""Assertion.
"""
tag = 'Assert'
def __init__(self, indent, lineno, test, fail):
Node.__init__(self, indent, lineno)
self.test = transform(indent, lineno, test)
self.fail = transform(indent, lineno, fail)
return
def put(self, can_split=False):
self.line_init()
self.line_more('assert ')
self.test.put(can_split=can_split)
if self.fail is None:
pass
else:
self.line_more(LIST_SEP, can_break_after=True)
self.fail.put()
self.line_term()
return self
def get_hi_lineno(self):
lineno = self.test.get_hi_lineno()
if self.fail is None:
pass
else:
lineno = self.fail.get_hi_lineno()
return lineno
class NodeAssign(Node):
"""Set one or more destinations to the value of the expression.
"""
tag = 'Assign'
def __init__(self, indent, lineno, nodes, expr):
Node.__init__(self, indent, lineno)
self.nodes = [transform(indent, lineno, node) for node in nodes]
self.expr = transform(indent, lineno, expr)
return
def put(self, can_split=False):
self.line_init()
for node in self.nodes:
node.put(can_split=can_split)
self.line_more(ASSIGNMENT, can_break_after=True)
if isinstance(self.expr, NodeYield): # 2006 Dec 13
self.line_more('(')
self.expr.put(can_split=True)
self.line_more(')')
else:
self.expr.put(can_split=can_split)
self.line_term()
return self
def marshal_names(self):
for node in self.nodes:
node.make_local_name()
return self
def get_hi_lineno(self):
return self.expr.get_hi_lineno()
class NodeAugAssign(Node):
"""Augment the destination by the value of the expression.
"""
tag = 'AugAssign'
def __init__(self, indent, lineno, node, op, expr):
Node.__init__(self, indent, lineno)
self.node = transform(indent, lineno, node)
self.op = transform(indent, lineno, op)
self.expr = transform(indent, lineno, expr)
return
def put(self, can_split=False):
self.line_init()
self.node.put(can_split=can_split)
op = ASSIGNMENT.replace('=', self.op.get_as_str())
self.line_more(op, can_break_after=True)
self.expr.put(can_split=can_split)
self.line_term()
return self
def marshal_names(self):
self.node.make_local_name()
return self
def get_hi_lineno(self):
return self.expr.get_hi_lineno()
class NodeBackquote(Node):
"""String conversion a'la *repr*.
"""
tag = 'Backquote'
def __init__(self, indent, lineno, expr):
Node.__init__(self, indent, lineno)
self.expr = transform(indent, lineno, expr)
return
def put(self, can_split=False):
self.line_more('`')
self.expr.put(can_split=can_split)
self.line_more('`')
return self
def get_hi_lineno(self):
return self.expr.get_hi_lineno()
class NodeBitAnd(NodeOpr):
'''Bitwise "and" operation (set union).
'''
tag = 'BitAnd'
def __init__(self, indent, lineno, nodes):
Node.__init__(self, indent, lineno)
self.nodes = [transform(indent, lineno, node) for node in nodes]
return
def put(self, can_split=False):
for node in (self.nodes)[:1]:
self.put_expr(node, can_split=can_split)
for node in (self.nodes)[1:]:
self.line_more(' & ', can_split_after=can_split,
can_break_after=True)
self.put_expr(node, can_split=can_split)
return self
def get_hi_lineno(self):
return (self.nodes)[-1].get_hi_lineno()
class NodeBitOr(NodeOpr):
'''Bitwise "or" operation (set intersection).
'''
tag = 'BitOr'
def __init__(self, indent, lineno, nodes):
Node.__init__(self, indent, lineno)
self.nodes = [transform(indent, lineno, node) for node in nodes]
return
def put(self, can_split=False):
for node in (self.nodes)[:1]:
self.put_expr(node, can_split=can_split)
for node in (self.nodes)[1:]:
self.line_more(' | ', can_split_after=can_split,
can_break_after=True)
self.put_expr(node, can_split=can_split)
return self
def get_hi_lineno(self):
return (self.nodes)[-1].get_hi_lineno()
class NodeBitXor(NodeOpr):
'''Bitwise "xor" operation.
'''
tag = 'BitXor'
def __init__(self, indent, lineno, nodes):
Node.__init__(self, indent, lineno)
self.nodes = [transform(indent, lineno, node) for node in nodes]
return
def put(self, can_split=False):
for node in (self.nodes)[:1]:
self.put_expr(node, can_split=can_split)
for node in (self.nodes)[1:]:
self.line_more(' ^ ', can_split_after=can_split,
can_break_after=True)
self.put_expr(node, can_split=can_split)
return self
def get_hi_lineno(self):
return (self.nodes)[-1].get_hi_lineno()
class NodeBreak(Node):
"""Escape from a loop.
"""
tag = 'Break'
def __init__(self, indent, lineno):
Node.__init__(self, indent, lineno)
return
def put(self, can_split=False):
self.line_init()
self.line_more('break')
self.line_term()
return self
class NodeCallFunc(Node):
"""Function invocation.
"""
tag = 'CallFunc'
def __init__(self, indent, lineno, node, args, star_args, dstar_args):
Node.__init__(self, indent, lineno)
self.node = transform(indent, lineno, node)
self.args = [transform(indent, lineno, arg) for arg in args]
self.star_args = transform(indent, lineno, star_args)
self.dstar_args = transform(indent, lineno, dstar_args)
if len(self.args) == 1:
arg = (self.args)[ZERO]
if isinstance(arg, NodeGenExpr):
arg.need_parens = False
return
def put(self, can_split=False):
def count_seps():
result = len(self.args)
if self.star_args is None:
pass
else:
result += 1
if self.dstar_args is None:
pass
else:
result += 1
return result
if isinstance(self.node, NodeLambda):
self.line_more('(')
self.node.put(can_split=True)
self.line_more(')')
else:
self.node.put(can_split=can_split)
self.line_more('(', tab_set=True)
if count_seps() > MAX_SEPS_BEFORE_SPLIT_LINE:
self.line_term()
self.inc_margin()
for arg in self.args:
self.line_init()
arg.put(can_split=True)
self.line_more(LIST_SEP)
self.line_term()
if self.star_args is None:
pass
else:
self.line_init()
self.line_more('*')
self.star_args.put(can_split=True)
self.line_more(LIST_SEP)
self.line_term()
if self.dstar_args is None:
pass
else:
self.line_init()
self.line_more('**')
self.dstar_args.put(can_split=True)
self.line_more(LIST_SEP)
self.line_term()
self.line_init()
self.dec_margin()
else:
for arg in (self.args)[:-1]:
arg.put(can_split=True)
self.line_more(FUNCTION_PARAM_SEP, can_split_after=True)
for arg in (self.args)[-1:]:
arg.put(can_split=True)
if self.star_args is None and self.dstar_args is None:
pass
else:
self.line_more(FUNCTION_PARAM_SEP, can_split_after=
True)
if self.star_args is None:
pass
else:
self.line_more('*')
self.star_args.put(can_split=True)
if self.dstar_args is None:
pass
else:
self.line_more(FUNCTION_PARAM_SEP, can_split_after=
True)
if self.dstar_args is None:
pass
else:
self.line_more('**')
self.dstar_args.put(can_split=True)
self.line_more(')', tab_clear=True)
return self
def get_lineno(self):
return self.node.get_lineno()
def get_hi_lineno(self):
lineno = Node.get_hi_lineno(self)
if self.args:
lineno = (self.args)[-1].get_hi_lineno()
if self.star_args is None:
pass
else:
lineno = self.star_args.get_hi_lineno()
if self.dstar_args is None:
pass
else:
lineno = self.dstar_args.get_hi_lineno()
return lineno
class NodeClass(Node):
"""Class declaration.
"""
tag = 'Class'
def __init__(self, indent, lineno, name, bases, doc, code):
Node.__init__(self, indent, lineno)
self.name = transform(indent, lineno, name)
self.bases = [transform(indent, lineno, base) for base in bases]
self.doc = transform(indent + 1, lineno, doc)
self.code = transform(indent + 1, lineno, code)
return
def put(self, can_split=False):
self.line_init(need_blank_line=2)
self.line_more('class ')
self.line_more(NAME_SPACE.get_name(self.name))
if self.bases:
self.line_more('(')
for base in (self.bases)[:1]:
base.put(can_split=True)
for base in (self.bases)[1:]:
self.line_more(LIST_SEP, can_split_after=True)
base.put(can_split=True)
self.line_more(')')
self.line_more(':')
self.line_term(self.code.get_lineno() - 1)
if self.doc is None:
pass
else:
self.doc.put_doc(need_blank_line=1)
OUTPUT.put_blank_line(6)
self.push_scope()
self.code.marshal_names()
self.code.put()
self.pop_scope()
OUTPUT.put_blank_line(7, count=2)
return self
def push_scope(self):
NAME_SPACE.push_scope()
return self
def pop_scope(self):
NAME_SPACE.pop_scope()
return self
def marshal_names(self):
NAME_SPACE.make_class_name(self.name)
return self
def get_hi_lineno(self):
lineno = self.name.get_hi_lineno()
if self.bases:
lineno = (self.bases)[-1].get_hi_lineno()
return lineno
class NodeCompare(NodeOpr):
"""Logical comparison.
"""
tag = 'Compare'
is_commutative = False
def __init__(self, indent, lineno, expr, ops):
Node.__init__(self, indent, lineno)
self.expr = transform(indent, lineno, expr)
self.ops = [(op, transform(indent, lineno, ex)) for (op, ex) in
ops]
return
def put(self, can_split=False):
self.put_expr(self.expr, can_split=can_split)
for (op, ex) in self.ops:
self.line_more(' %s ' % op, can_split_after=can_split,
can_break_after=True)
ex.put(can_split=can_split)
return self
def get_hi_lineno(self):
(op, ex) = (self.ops)[-1]
return ex.get_hi_lineno()
class NodeConst(Node):
"""Literal or expression.
"""
tag = 'Const'
def __init__(self, indent, lineno, value):
Node.__init__(self, indent, lineno)
self.value = transform(indent, lineno, value)
return
def put(self, can_split=False):
if isinstance(self.value, NodeStr):
self.value.put_lit()
elif isinstance(self.value, Node):
self.value.put(can_split=can_split)
else:
result = repr(self.value)
original_values = COMMENTS.literal_pool.get(result, []) # 2006 Jan 14
if len(original_values) == 1:
(result, lineno) = original_values[ZERO]
self.line_more(result)
return self
def is_none(self):
return self.value is None
class NodeContinue(Node):
"""Start a new trip through a loop.
"""
tag = 'Continue'
def __init__(self, indent, lineno):
Node.__init__(self, indent, lineno)
return
def put(self, can_split=False):
self.line_init()
self.line_more('continue')
self.line_term()
return self
class NodeDecorators(Node):
"""Functions that take a class method (the next) and a return
callable object, e.g., *classmethod*.
"""
def __init__(self, indent, lineno, nodes):
Node.__init__(self, indent, lineno)
self.nodes = [transform(indent, lineno, node) for node in nodes]
return
def put(self, spacing=ZERO, can_split=False):
for node in self.nodes:
self.line_init(need_blank_line=spacing)
self.line_more('@')
node.put(can_split=can_split)
self.line_term()
spacing = ZERO
return self
def get_hi_lineno(self):
return (self.nodes)[-1].get_hi_lineno()
class NodeDict(Node):
"""Declaration of a map (dictionary).
"""
tag = 'Dict'
def __init__(self, indent, lineno, items):
Node.__init__(self, indent, lineno)
self.items = [(transform(indent, lineno, key), transform(indent,
lineno, value)) for (key, value) in items]
return
def put(self, can_split=False):
def put_item():
key.put(can_split=can_split)
self.line_more(DICT_COLON)
value.put(can_split=can_split)
return
self.line_more('{', tab_set=True)
if len(self.items) > MAX_SEPS_BEFORE_SPLIT_LINE:
self.line_term()
self.inc_margin()
for (key, value) in self.items:
self.line_init()
put_item()
self.line_more(LIST_SEP)
self.line_term()
self.line_init()
self.dec_margin()
else:
for (key, value) in (self.items)[:1]:
put_item()
for (key, value) in (self.items)[1:]:
self.line_more(LIST_SEP, can_split_after=True)
put_item()
self.line_more('}', tab_clear=True)
return self
def get_hi_lineno(self):
lineno = Node.get_hi_lineno(self)
if self.items:
(key, value) = (self.items)[-1]
lineno = value.get_hi_lineno()
return lineno
class NodeDiscard(Node):
"""Evaluate an expression (function) without saving the result.
"""
tag = 'Discard'
def __init__(self, indent, lineno, expr):
Node.__init__(self, indent, lineno)
self.expr = transform(indent, lineno, expr)
return
def put(self, can_split=False):
self.line_init()
self.expr.put(can_split=can_split)
self.line_term()
return self
def marshal_names(self):
self.expr.marshal_names()
return self
def get_lineno(self):
return self.expr.get_lineno()
def get_hi_lineno(self):
return self.expr.get_hi_lineno()
class NodeDiv(NodeOpr):
"""Division operation.
"""
tag = 'Div'
is_commutative = False
def __init__(self, indent, lineno, left, right):
Node.__init__(self, indent, lineno)
self.left = transform(indent, lineno, left)
self.right = transform(indent, lineno, right)
return
def put(self, can_split=False):
self.put_expr(self.left, can_split=can_split)
self.line_more(' / ', can_split_after=can_split, can_break_after=
True)
self.put_expr(self.right, can_split=can_split)
return self
def get_hi_lineno(self):
return self.right.get_hi_lineno()
class NodeEllipsis(Node):
tag = 'Ellipsis'
def __init__(self, indent, lineno):
Node.__init__(self, indent, lineno)
return
def put(self, can_split=False):
self.line_more('...')
return self
class NodeExec(Node):
"""Execute a given string of Python code in a specified namespace.
"""
tag = 'Exec'
def __init__(self, indent, lineno, expr, locals, globals):
Node.__init__(self, indent, lineno)
self.expr = transform(indent, lineno, expr)
self.locals = transform(indent, lineno, locals)
self.globals = transform(indent, lineno, globals)
return
def put(self, can_split=False):
self.line_init()
self.line_more('exec ')
self.expr.put(can_split=can_split)
if self.locals is None:
pass
else:
self.line_more(' in ', can_break_after=True)
self.locals.put(can_split=can_split)
if self.globals is None:
pass
else:
self.line_more(LIST_SEP, can_break_after=True)
self.globals.put(can_split=can_split)
self.line_term()
return self
def get_hi_lineno(self):
lineno = self.expr.get_hi_lineno()
if self.locals is None:
pass
else:
lineno = self.locals.get_hi_lineno()
if self.globals is None:
pass
else:
lineno = self.globals.get_hi_lineno()
return lineno
class NodeFor(Node):
"""For loop.
"""
tag = 'For'
def __init__(self, indent, lineno, assign, list, body, else_):
Node.__init__(self, indent, lineno)
self.assign = transform(indent, lineno, assign)
self.list = transform(indent, lineno, list)
self.body = transform(indent + 1, lineno, body)
self.else_ = transform(indent + 1, lineno, else_)
return
def put(self, can_split=False):
self.line_init()
self.line_more('for ')
self.assign.put(can_split=can_split)
self.line_more(' in ', can_break_after=True)
self.list.put(can_split=can_split)
self.line_more(':')
self.line_term(self.body.get_lineno() - 1)
self.body.put()
if self.else_ is None:
pass
else:
self.line_init()
self.line_more('else:')
self.line_term(self.else_.get_lineno() - 1)
self.else_.put()
return self
def marshal_names(self):
self.assign.make_local_name()
self.body.marshal_names()
if self.else_ is None:
pass
else:
self.else_.marshal_names()
return self
def get_hi_lineno(self):
return self.list.get_hi_lineno()
class NodeFloorDiv(NodeOpr):
"""Floor division operation.
"""
tag = 'FloorDiv'
is_commutative = False
def __init__(self, indent, lineno, left, right):
Node.__init__(self, indent, lineno)
self.left = transform(indent, lineno, left)
self.right = transform(indent, lineno, right)
return
def put(self, can_split=False):
self.put_expr(self.left, can_split=can_split)
self.line_more(' // ', can_split_after=can_split,
can_break_after=True)
self.put_expr(self.right, can_split=can_split)
return self
def get_hi_lineno(self):
return self.right.get_hi_lineno()
class NodeFrom(Node):
"""Import a name space.
"""
tag = 'From'
def __init__(self, indent, lineno, modname, names):
Node.__init__(self, indent, lineno)
self.modname = transform(indent, lineno, modname)
self.names = [(transform(indent, lineno, identifier), transform(indent,
lineno, name)) for (identifier, name) in names]
return
def put(self, can_split=False):
def put_name():
identifier.put(can_split=can_split)
if name is None:
pass
else:
self.line_more(' as ')
name.put(can_split=can_split)
return
self.line_init()
self.line_more('from ')
self.modname.put(can_split=can_split)
self.line_more(' import ')
for (identifier, name) in (self.names)[:-1]:
put_name()
self.line_more(LIST_SEP, can_break_after=True)
for (identifier, name) in (self.names)[-1:]:
put_name()
self.line_term()
return self
def marshal_names(self):
for (identifier, name) in self.names:
if name is None:
NAME_SPACE.make_imported_name(identifier)
else:
NAME_SPACE.make_local_name(name)
return self
def get_hi_lineno(self):
(identifier, name) = (self.names)[-1]
lineno = identifier.get_hi_lineno()
if name is None:
pass
else:
lineno = name.get_hi_lineno()
return lineno
class NodeFunction(Node):
"""Function declaration.
"""
tag = 'Function'
def __init__(
self,
indent,
lineno,
decorators,
name,
argnames,
defaults,
flags,
doc,
code,
):
Node.__init__(self, indent, lineno)
self.decorators = transform(indent, lineno, decorators)
self.name = transform(indent, lineno, name)
self.argnames = self.walk(argnames, self.xform)
self.defaults = [transform(indent, lineno, default) for default in
defaults]
self.flags = transform(indent, lineno, flags)
self.doc = transform(indent + 1, lineno, doc)
self.code = transform(indent + 1, lineno, code)
return
def walk(self, tuple_, func, need_tuple=False):
if isinstance(tuple_, tuple) or isinstance(tuple_, list):
result = [self.walk(item, func, need_tuple) for item in
tuple_]
if need_tuple:
result = tuple(result)
else:
result = func(tuple_)
return result
def xform(self, node):
result = transform(self.indent, self.lineno, node)
return result
def pair_up(self, args, defaults):
args = args[:] # This function manipulates its arguments
defaults = defaults[:] # destructively, so make copies first.
stars = []
args.reverse()
defaults.reverse()
is_excess_positionals = self.flags.int & 4
is_excess_keywords = self.flags.int & 8
if is_excess_positionals == ZERO:
pass
else:
stars.insert(ZERO, '*')
defaults.insert(ZERO, None)
if is_excess_keywords == ZERO:
pass
else:
stars.insert(ZERO, '**')
defaults.insert(ZERO, None)
result = map(None, args, defaults, stars)
result.reverse()
return result
def put_parm(self, arg, default, stars, can_split=True):
if stars is None:
pass
else:
self.line_more(stars)
tuple_ = self.walk(arg, NAME_SPACE.get_name, need_tuple=True)
tuple_ = str(tuple_)
tuple_ = tuple_.replace("'", NULL).replace(',)', ', )')
self.line_more(tuple_)
if default is None:
pass
else:
self.line_more(FUNCTION_PARAM_ASSIGNMENT)
default.put(can_split=can_split)
return
def put(self, can_split=False):
if NAME_SPACE.is_global():
spacing = 2
else:
spacing = 1
if self.decorators is None:
pass
else:
self.decorators.put(spacing)
spacing = ZERO
self.line_init(need_blank_line=spacing)
self.line_more('def ')
self.line_more(NAME_SPACE.get_name(self.name))
self.push_scope()
parms = self.pair_up(self.argnames, self.defaults)
for (arg, default, stars) in parms:
self.walk(arg, NAME_SPACE.make_formal_param_name)
self.code.marshal_names()
self.line_more('(', tab_set=True)
if len(parms) > MAX_SEPS_BEFORE_SPLIT_LINE:
self.line_term()
self.inc_margin()
for (arg, default, stars) in parms[:-1]:
self.line_init()
self.put_parm(arg, default, stars)
self.line_more(FUNCTION_PARAM_SEP)
self.line_term()
for (arg, default, stars) in parms[-1:]:
self.line_init()
self.put_parm(arg, default, stars)
if stars is None: # 2006 Dec 17
self.line_more(FUNCTION_PARAM_SEP)
self.line_term()
self.line_init()
self.dec_margin()
else:
for (arg, default, stars) in parms[:1]:
self.put_parm(arg, default, stars)
for (arg, default, stars) in parms[1:]:
self.line_more(FUNCTION_PARAM_SEP, can_split_after=True)
self.put_parm(arg, default, stars)
self.line_more('):', tab_clear=True)
if DEBUG:
self.line_more(' /* Function flags: ')
self.flags.put()
self.line_more(' */ ')
self.line_term(self.code.get_lineno() - 1)
if self.doc is None:
pass
else:
self.doc.put_doc()
self.code.put()
self.pop_scope()
OUTPUT.put_blank_line(8, count=spacing)
return self
def push_scope(self):
NAME_SPACE.push_scope()
return self
def pop_scope(self):
NAME_SPACE.pop_scope()
return self
def marshal_names(self):
NAME_SPACE.make_function_name(self.name)
return self
class NodeLambda(NodeFunction):
tag = 'Lambda'
def __init__(self, indent, lineno, argnames, defaults, flags, code):
NodeFunction.__init__(
self,
indent,
lineno,
None,
None,
argnames,
defaults,
flags,
None,
code,
)
return
def put(self, can_split=False):
self.line_more('lambda ')
self.push_scope()
parms = self.pair_up(self.argnames, self.defaults)
for (arg, default, stars) in parms:
self.walk(arg, NAME_SPACE.make_formal_param_name)
for (arg, default, stars) in parms[:1]:
self.put_parm(arg, default, stars, can_split=False)
for (arg, default, stars) in parms[1:]:
self.line_more(FUNCTION_PARAM_SEP, can_break_after=True)
self.put_parm(arg, default, stars, can_split=False)
self.line_more(': ', can_break_after=True)
if DEBUG:
self.line_more(' /* Function flags: ')
self.flags.put()
self.line_more(' */ ')
self.code.put()
self.pop_scope()
return self
def get_hi_lineno(self):
return self.code.get_hi_lineno()
def marshal_names(self):
return self
class NodeGenExpr(Node):
"""Generator expression, which needs its own parentheses.
"""
tag = 'GenExpr'
def __init__(self, indent, lineno, code):
Node.__init__(self, indent, lineno)
self.code = transform(indent, lineno, code)
self.need_parens = True
return
def put(self, can_split=False):
if self.need_parens:
self.line_more('(')
self.code.put(can_split=True)
if self.need_parens:
self.line_more(')')
return self
def get_hi_lineno(self):
return self.code.get_hi_lineno()
class NodeGenExprInner(Node):
"""Generator expression inside parentheses.
"""
tag = 'GenExprInner'
def __init__(self, indent, lineno, expr, quals):
Node.__init__(self, indent, lineno)
self.expr = transform(indent, lineno, expr)
self.quals = [transform(indent, lineno, qual) for qual in quals]
return
def put(self, can_split=False):
self.push_scope()
self.marshal_names()
self.expr.put(can_split=can_split)
for qual in self.quals:
qual.put(can_split=can_split)
self.pop_scope()
return self
def push_scope(self):
NAME_SPACE.push_scope()
return self
def pop_scope(self):
NAME_SPACE.pop_scope()
return self
def marshal_names(self):
for qual in self.quals:
qual.marshal_names()
return self
def get_hi_lineno(self):
lineno = (self.quals)[-1].get_hi_lineno()
return lineno
class NodeGenExprFor(Node):
'''"For" of a generator expression.
'''
tag = 'GenExprFor'
def __init__(self, indent, lineno, assign, list, ifs):
Node.__init__(self, indent, lineno)
self.assign = transform(indent, lineno, assign)
self.list = transform(indent, lineno, list)
self.ifs = [transform(indent, lineno, if_) for if_ in ifs]
return
def put(self, can_split=False):
self.line_more(SPACE, can_split_after=True)
self.line_more('for ')
self.assign.put(can_split=can_split)
self.line_more(' in ', can_split_after=True)
self.list.put(can_split=can_split)
for if_ in self.ifs:
if_.put(can_split=can_split)
return self
def marshal_names(self):
self.assign.make_local_name()
return self
def get_hi_lineno(self):
lineno = self.list.get_hi_lineno()
if self.ifs:
lineno = (self.ifs)[-1].get_hi_lineno()
return lineno
class NodeGenExprIf(Node):
'''"If" of a generator expression.
'''
tag = 'GenExprIf'
def __init__(self, indent, lineno, test):
Node.__init__(self, indent, lineno)
self.test = transform(indent, lineno, test)
return
def put(self, can_split=False):
self.line_more(SPACE, can_split_after=True)
self.line_more('if ')
self.test.put(can_split=can_split)
return self
def get_hi_lineno(self):
return self.test.get_hi_lineno()
class NodeGetAttr(NodeOpr):
"""Class attribute (method).
"""
tag = 'GetAttr'
def __init__(self, indent, lineno, expr, attrname):
Node.__init__(self, indent, lineno)
self.expr = transform(indent, lineno, expr)
self.attrname = transform(indent, lineno, attrname)
return
def put(self, can_split=False):
if isinstance(self.expr, NodeConst):
self.line_more('(')
self.expr.put(can_split=True)
self.line_more(')')
else:
self.put_expr(self.expr, can_split=can_split)
self.line_more('.')
self.line_more(NAME_SPACE.make_attr_name(self.expr, self.attrname))
return self
def get_hi_lineno(self):
return self.attrname.get_hi_lineno()
class NodeGlobal(Node):
tag = 'Global'
def __init__(self, indent, lineno, names):
Node.__init__(self, indent, lineno)
self.names = [transform(indent, lineno, name) for name in names]
return
def put(self, can_split=False):
self.line_init()
self.line_more('global ')
for name in (self.names)[:1]:
self.line_more(NAME_SPACE.get_name(name))
for name in (self.names)[1:]:
self.line_more(LIST_SEP, can_break_after=True)
self.line_more(NAME_SPACE.get_name(name))
self.line_term()
return self
def marshal_names(self):
for name in self.names:
NAME_SPACE.make_global_name(name)
return self
def get_hi_lineno(self):
return (self.names)[-1].get_hi_lineno()
class NodeIf(Node):
"""True/False test.
"""
tag = 'If'
def __init__(self, indent, lineno, tests, else_):
Node.__init__(self, indent, lineno)
self.tests = [(transform(indent, lineno, expr), transform(indent +
1, lineno, stmt)) for (expr, stmt) in tests]
self.else_ = transform(indent + 1, lineno, else_)
return
def put(self, can_split=False):
for (expr, stmt) in (self.tests)[:1]:
self.line_init()
self.line_more('if ')
expr.put(can_split=can_split)
self.line_more(':')
self.line_term(stmt.get_lineno() - 1)
stmt.put()
for (expr, stmt) in (self.tests)[1:]:
self.line_init()
self.line_more('elif ')
expr.put(can_split=can_split)
self.line_more(':')
self.line_term(stmt.get_lineno() - 1)
stmt.put()
if self.else_ is None:
pass
else:
self.line_init()
self.line_more('else:')
self.line_term(self.else_.get_lineno() - 1)
self.else_.put()
return self
def marshal_names(self):
for (expr, stmt) in self.tests:
stmt.marshal_names()
if self.else_ is None:
pass
else:
self.else_.marshal_names()
return self
def get_hi_lineno(self):
(expr, stmt) = (self.tests)[ZERO]
return expr.get_hi_lineno()
class NodeIfExp(Node):
"""Conditional assignment.
"""
tag = 'IfExp'
def __init__(self, indent, lineno, test, then, else_):
Node.__init__(self, indent, lineno)
self.test = transform(indent, lineno, test)
self.then = transform(indent, lineno, then)
self.else_ = transform(indent, lineno, else_)
return
def put(self, can_split=False):
self.then.put(can_split=can_split)
self.line_more(' if ')
self.test.put(can_split=can_split)
self.line_more(' else ')
self.else_.put()
return self
def get_hi_lineno(self):
return self.else_.get_hi_lineno()
class NodeImport(Node):
tag = 'Import'
def __init__(self, indent, lineno, names):
Node.__init__(self, indent, lineno)
self.names = [(transform(indent, lineno, identifier), transform(indent,
lineno, name)) for (identifier, name) in names]
return
def put(self, can_split=False):
def put_name():
identifier.put(can_split=can_split)
if name is None:
pass
else:
self.line_more(' as ')
name.put(can_split=can_split)
return
for (identifier, name) in self.names:
self.line_init()
self.line_more('import ')
put_name()
self.line_term()
return self
def marshal_names(self):
for (identifier, name) in self.names:
if name is None:
pass
else:
NAME_SPACE.make_local_name(name)
return self
def get_hi_lineno(self):
(identifier, name) = (self.names)[-1]
lineno = identifier.get_hi_lineno()
if name is None:
pass
else:
lineno = name.get_hi_lineno()
return lineno
class NodeInvert(NodeOpr):
"""Unary bitwise complement.
"""
tag = 'Invert'
def __init__(self, indent, lineno, expr):
Node.__init__(self, indent, lineno)
self.expr = transform(indent, lineno, expr)
return
def put(self, can_split=False):
self.line_more('~')
self.put_expr(self.expr, can_split=can_split)
return self
def get_hi_lineno(self):
return self.expr.get_hi_lineno()
class NodeKeyword(Node):
"""Formal parameter on a function invocation.
"""
tag = 'Keyword'
def __init__(self, indent, lineno, name, expr):
Node.__init__(self, indent, lineno)
self.name = transform(indent, lineno, name)
self.expr = transform(indent, lineno, expr)
return
def put(self, can_split=False):
self.line_more(NAME_SPACE.make_keyword_name(self.name))
self.line_more(FUNCTION_PARAM_ASSIGNMENT, can_split_after=True)
self.expr.put(can_split=can_split)
return self
def get_hi_lineno(self):
return self.expr.get_hi_lineno()
class NodeLeftShift(NodeOpr):
"""Bitwise shift left.
"""
tag = 'LeftShift'
is_commutative = False
def __init__(self, indent, lineno, left, right):
Node.__init__(self, indent, lineno)
self.left = transform(indent, lineno, left)
self.right = transform(indent, lineno, right)
return
def put(self, can_split=False):
self.put_expr(self.left, can_split=can_split)
self.line_more(' << ', can_split_after=can_split,
can_break_after=True)
self.put_expr(self.right, can_split=can_split)
return self
def get_hi_lineno(self):
return self.right.get_hi_lineno()
class NodeList(Node):
"""Declaration of a mutable list.
"""
tag = 'List'
def __init__(self, indent, lineno, nodes):
Node.__init__(self, indent, lineno)
self.nodes = [transform(indent, lineno, node) for node in nodes]
return
def put(self, can_split=False):
self.line_more('[', tab_set=True)
if len(self.nodes) > MAX_SEPS_BEFORE_SPLIT_LINE:
self.line_term()
self.inc_margin()
for node in self.nodes:
self.line_init()
node.put(can_split=True)
self.line_more(LIST_SEP)
self.line_term()
self.line_init()
self.dec_margin()
else:
for node in (self.nodes)[:1]:
node.put(can_split=True)
for node in (self.nodes)[1:]:
self.line_more(LIST_SEP, can_split_after=True)
node.put(can_split=True)
self.line_more(']', tab_clear=True)
return self
def get_hi_lineno(self):
lineno = Node.get_hi_lineno(self)
if self.nodes:
lineno = (self.nodes)[-1].get_hi_lineno()
return lineno
class NodeListComp(Node):
"""List comprehension.
"""
tag = 'ListComp'
def __init__(self, indent, lineno, expr, quals):
Node.__init__(self, indent, lineno)
self.expr = transform(indent, lineno, expr)
self.quals = [transform(indent, lineno, qual) for qual in quals]
return
def put(self, can_split=False):
self.push_scope()
self.marshal_names()
self.line_more('[', tab_set=True)
self.expr.put(can_split=True)
for qual in self.quals:
qual.put(can_split=True)
self.line_more(']', tab_clear=True)
self.pop_scope()
return self
def push_scope(self):
NAME_SPACE.push_scope()
return self
def pop_scope(self):
NAME_SPACE.pop_scope()
return self
def marshal_names(self):
for qual in self.quals:
qual.marshal_names()
return self
def get_hi_lineno(self):
lineno = (self.quals)[-1].get_hi_lineno()
return lineno
class NodeListCompFor(Node):
'''"For" of a list comprehension.
'''
tag = 'ListCompFor'
def __init__(self, indent, lineno, assign, list, ifs):
Node.__init__(self, indent, lineno)
self.assign = transform(indent, lineno, assign)
self.list = transform(indent, lineno, list)
self.ifs = [transform(indent, lineno, if_) for if_ in ifs]
return
def put(self, can_split=False):
self.line_more(SPACE, can_split_after=True)
self.line_more('for ')
self.assign.put(can_split=can_split)
self.line_more(' in ', can_split_after=True)
self.list.put(can_split=can_split)
for if_ in self.ifs:
if_.put(can_split=can_split)
return self
def marshal_names(self):
self.assign.make_local_name()
return self
def get_hi_lineno(self):
lineno = self.list.get_hi_lineno()
if self.ifs:
lineno = (self.ifs)[-1].get_hi_lineno()
return lineno
class NodeListCompIf(Node):
'''"If" of a list comprehension.
'''
tag = 'ListCompIf'
def __init__(self, indent, lineno, test):
Node.__init__(self, indent, lineno)
self.test = transform(indent, lineno, test)
return
def put(self, can_split=False):
self.line_more(SPACE, can_split_after=True)
self.line_more('if ')
self.test.put(can_split=can_split)
return self
def get_hi_lineno(self):
return self.test.get_hi_lineno()
class NodeMod(NodeOpr):
"""Modulus (string formatting) operation.
"""
tag = 'Mod'
is_commutative = False
def __init__(self, indent, lineno, left, right):
Node.__init__(self, indent, lineno)
self.left = transform(indent, lineno, left)
self.right = transform(indent, lineno, right)
return
def put(self, can_split=False):
self.put_expr(self.left, can_split=can_split)
self.line_more(' % ', can_split_after=can_split, can_break_after=
True)
self.put_expr(self.right, can_split=can_split)
return self
def get_hi_lineno(self):
return self.right.get_hi_lineno()
class NodeModule(Node):
"""A whole script.
Contains a doc string and a statement.
"""
tag = 'Module'
def __init__(self, indent, lineno, doc, node):
Node.__init__(self, indent, lineno)
self.doc = transform(indent, lineno, doc)
self.node = transform(indent, lineno, node)
return
def put(self, can_split=False):
if self.doc is None:
pass
else:
self.doc.lineno = self.get_lineno()
self.doc.put_doc()
self.node.put()
return self
def push_scope(self):
NAME_SPACE.push_scope()
return self
def pop_scope(self):
NAME_SPACE.pop_scope()
return self
def marshal_names(self):
self.node.marshal_names()
return self
def get_lineno(self):
return self.node.get_lineno()
class NodeMul(NodeOpr):
"""Multiply operation.
"""
tag = 'Mul'
is_commutative = False # ... string replication, that is.
def __init__(self, indent, lineno, left, right):
Node.__init__(self, indent, lineno)
self.left = transform(indent, lineno, left)
self.right = transform(indent, lineno, right)
return
def put(self, can_split=False):
self.put_expr(self.left, can_split=can_split)
self.line_more(' * ', can_split_after=can_split, can_break_after=
True)
self.put_expr(self.right, can_split=can_split)
return self
def get_hi_lineno(self):
return self.right.get_hi_lineno()
class NodeName(Node):
"""Variable.
"""
tag = 'Name'
def __init__(self, indent, lineno, name):
Node.__init__(self, indent, lineno)
self.name = transform(indent, lineno, name)
return
def put(self, can_split=False):
self.line_more(NAME_SPACE.get_name(self.name))
return self
def make_local_name(self):
if NAME_SPACE.has_name(self.name):
pass
else:
NAME_SPACE.make_local_name(self.name)
return self
def get_hi_lineno(self):
return self.name.get_hi_lineno()
class NodeNot(NodeOpr):
"""Logical negation.
"""
tag = 'Not'
def __init__(self, indent, lineno, expr):
Node.__init__(self, indent, lineno)
self.expr = transform(indent, lineno, expr)
return
def put(self, can_split=False):
self.line_more('not ')
self.put_expr(self.expr, can_split=can_split)
return self
def get_hi_lineno(self):
return self.expr.get_hi_lineno()
class NodeOr(NodeOpr):
'''Logical "or" operation.
'''
tag = 'Or'
def __init__(self, indent, lineno, nodes):
Node.__init__(self, indent, lineno)
self.nodes = [transform(indent, lineno, node) for node in nodes]
return
def put(self, can_split=False):
for node in (self.nodes)[:1]:
self.put_expr(node, can_split=can_split)
for node in (self.nodes)[1:]:
self.line_more(' or ', can_split_after=can_split,
can_break_after=True)
self.put_expr(node, can_split=can_split)
return self
def get_hi_lineno(self):
return (self.nodes)[-1].get_hi_lineno()
class NodePass(Node):
"""No-op.
"""
tag = 'Pass'
def __init__(self, indent, lineno):
Node.__init__(self, indent, lineno)
return
def put(self, can_split=False):
self.line_init()
self.line_more('pass')
self.line_term()
return self
class NodePower(NodeOpr):
"""Exponentiation.
"""
tag = 'Power'
is_commutative = False
def __init__(self, indent, lineno, left, right):
Node.__init__(self, indent, lineno)
self.left = transform(indent, lineno, left)
self.right = transform(indent, lineno, right)
return
def put(self, can_split=False):
self.put_expr(self.left, can_split=can_split)
self.line_more(' ** ', can_split_after=can_split,
can_break_after=True)
self.put_expr(self.right, can_split=can_split)
return self
def get_hi_lineno(self):
return self.right.get_hi_lineno()
class NodePrint(Node):
"""The print statement with optional chevron and trailing comma.
"""
tag = 'Print'
def __init__(self, indent, lineno, nodes, dest):
Node.__init__(self, indent, lineno)
self.nodes = [transform(indent, lineno, node) for node in nodes]
self.dest = transform(indent, lineno, dest)
return
def put(self, can_split=False):
self.line_init()
self.line_more('print ')
if self.dest is None:
pass
else:
self.line_more('>> ')
self.dest.put(can_split=can_split)
if self.nodes:
self.line_more(LIST_SEP, can_break_after=True)
for node in self.nodes:
node.put(can_split=can_split)
self.line_more(LIST_SEP, can_break_after=True)
self.line_term()
return self
def get_hi_lineno(self):
lineno = Node.get_hi_lineno(self)
if self.dest is None:
pass
else:
lineno = self.dest.get_hi_lineno()
if self.nodes:
lineno = (self.nodes)[-1].get_hi_lineno()
return lineno
class NodePrintnl(Node):
"""The print statement with optional chevron and without trailing comma.
"""
tag = 'Printnl'
def __init__(self, indent, lineno, nodes, dest):
Node.__init__(self, indent, lineno)
self.nodes = [transform(indent, lineno, node) for node in nodes]
self.dest = transform(indent, lineno, dest)
return
def put(self, can_split=False):
self.line_init()
self.line_more('print ')
if self.dest is None:
pass
else:
self.line_more('>> ')
self.dest.put(can_split=can_split)
if self.nodes:
self.line_more(LIST_SEP, can_break_after=True)
for node in (self.nodes)[:-1]:
node.put(can_split=can_split)
self.line_more(LIST_SEP, can_break_after=True)
for node in (self.nodes)[-1:]:
node.put(can_split=can_split)
self.line_term()
return self
def get_hi_lineno(self):
lineno = Node.get_hi_lineno(self)
if self.dest is None:
pass
else:
lineno = self.dest.get_hi_lineno()
if self.nodes:
lineno = (self.nodes)[-1].get_hi_lineno()
return lineno
class NodeRaise(Node):
"""Raise an exception.
"""
tag = 'Raise'
def __init__(self, indent, lineno, expr1, expr2, expr3):
Node.__init__(self, indent, lineno)
self.expr1 = transform(indent, lineno, expr1)
self.expr2 = transform(indent, lineno, expr2)
self.expr3 = transform(indent, lineno, expr3)
return
def put(self, can_split=False):
self.line_init()
self.line_more('raise ')
if self.expr1 is None:
pass
else:
self.expr1.put(can_split=can_split)
if self.expr2 is None:
pass
else:
self.line_more(LIST_SEP, can_break_after=True)
self.expr2.put(can_split=can_split)
if self.expr3 is None:
pass
else:
self.line_more(LIST_SEP, can_break_after=True)
self.expr3.put(can_split=can_split)
self.line_term()
return self
def get_hi_lineno(self):
lineno = Node.get_hi_lineno(self)
if self.expr1 is None:
pass
else:
lineno = self.expr1.get_hi_lineno()
if self.expr2 is None:
pass
else:
lineno = self.expr2.get_hi_lineno()
if self.expr3 is None:
pass
else:
lineno = self.expr3.get_hi_lineno()
return lineno
class NodeReturn(Node):
"""Return a value from a function.
"""
tag = 'Return'
def __init__(self, indent, lineno, value):
Node.__init__(self, indent, lineno)
self.value = transform(indent, lineno, value)
return
def has_value(self):
return not (isinstance(self.value, NodeConst) and self.value.is_none())
def put(self, can_split=False):
self.line_init()
self.line_more('return ')
if self.has_value():
self.value.put(can_split=can_split)
self.line_term()
return self
def get_hi_lineno(self):
lineno = Node.get_hi_lineno(self)
if self.has_value:
lineno = self.value.get_hi_lineno()
return lineno
class NodeRightShift(NodeOpr):
"""Bitwise shift right.
"""
tag = 'RightShift'
is_commutative = False
def __init__(self, indent, lineno, left, right):
Node.__init__(self, indent, lineno)
self.left = transform(indent, lineno, left)
self.right = transform(indent, lineno, right)
return
def put(self, can_split=False):
self.put_expr(self.left, can_split=can_split)
self.line_more(' >> ', can_split_after=can_split,
can_break_after=True)
self.put_expr(self.right, can_split=can_split)
return self
def get_hi_lineno(self):
return self.right.get_hi_lineno()
class NodeSlice(NodeOpr):
"""A slice of a series.
"""
tag = 'Slice'
def __init__(self, indent, lineno, expr, flags, lower, upper):
Node.__init__(self, indent, lineno)
self.expr = transform(indent, lineno, expr)
self.flags = transform(indent, lineno, flags)
self.lower = transform(indent, lineno, lower)
self.upper = transform(indent, lineno, upper)
return
def has_value(self, node):
return not (node is None or isinstance(node, NodeConst) and node.is_none())
def put(self, can_split=False):
is_del = self.flags.get_as_str() in ['OP_DELETE']
if is_del:
self.line_init()
self.line_more('del ')
self.put_expr(self.expr, can_split=can_split)
self.line_more('[')
if self.has_value(self.lower):
self.lower.put(can_split=True)
self.line_more(SLICE_COLON)
if self.has_value(self.upper):
self.upper.put(can_split=True)
self.line_more(']')
if DEBUG:
self.line_more(' /* Subscript flags: ')
self.flags.put()
self.line_more(' */ ')
if is_del:
self.line_term()
return self
def make_local_name(self):
self.expr.make_local_name()
return self
def get_hi_lineno(self):
lineno = Node.get_hi_lineno(self)
if self.has_value(self.lower):
lineno = self.lower.get_hi_lineno()
if self.has_value(self.upper):
lineno = self.upper.get_hi_lineno()
return lineno
class NodeSliceobj(Node):
"""A subscript range.
This is used for multi-dimensioned arrays.
"""
tag = 'Sliceobj'
def __init__(self, indent, lineno, nodes):
Node.__init__(self, indent, lineno)
self.nodes = [transform(indent, lineno, node) for node in nodes]
return
def has_value(self, node):
return not (node is None or isinstance(node, NodeConst) and node.is_none())
def put(self, can_split=False):
for node in (self.nodes)[:1]:
if self.has_value(node):
node.put(can_split=can_split)
for node in (self.nodes)[1:]:
self.line_more(SLICE_COLON, can_split_after=True)
if self.has_value(node):
node.put(can_split=can_split)
return self
def get_hi_lineno(self):
lineno = Node.get_hi_lineno(self)
for node in self.nodes:
if self.has_value(node):
lineno = node.get_hi_lineno()
return lineno
class NodeStmt(Node):
"""A list of nodes..
"""
tag = 'Stmt'
def __init__(self, indent, lineno, nodes):
Node.__init__(self, indent, lineno)
self.nodes = [transform(indent, lineno, node) for node in nodes]
return
def put(self, can_split=False):
for node in self.nodes:
node.put()
return self
def get_lineno(self):
for node in self.nodes:
result = node.get_lineno()
if result == ZERO:
pass
else:
return result
return ZERO
def marshal_names(self):
for node in self.nodes:
node.marshal_names()
return self
class NodeSub(NodeOpr):
"""Subtract operation.
"""
tag = 'Sub'
is_commutative = False
def __init__(self, indent, lineno, left, right):
Node.__init__(self, indent, lineno)
self.left = transform(indent, lineno, left)
self.right = transform(indent, lineno, right)
return
def put(self, can_split=False):
self.put_expr(self.left, can_split=can_split)
self.line_more(' - ', can_split_after=can_split, can_break_after=
True)
self.put_expr(self.right, can_split=can_split)
return self
def get_hi_lineno(self):
return self.right.get_hi_lineno()
class NodeSubscript(NodeOpr):
"""A subscripted sequence.
"""
tag = 'Subscript'
def __init__(self, indent, lineno, expr, flags, subs):
Node.__init__(self, indent, lineno)
self.expr = transform(indent, lineno, expr)
self.flags = transform(indent, lineno, flags)
self.subs = [transform(indent, lineno, sub) for sub in subs]
return
def put(self, can_split=False):
is_del = self.flags.get_as_str() in ['OP_DELETE']
if is_del:
self.line_init()
self.line_more('del ')
self.put_expr(self.expr, can_split=can_split)
if DEBUG:
self.line_more(' /* Subscript flags: ')
self.flags.put()
self.line_more(' */ ')
self.line_more('[', tab_set=True)
for sub in (self.subs)[:1]:
sub.put(can_split=True)
for sub in (self.subs)[1:]:
self.line_more(SUBSCRIPT_SEP, can_split_after=True)
sub.put(can_split=True)
self.line_more(']', tab_clear=True)
if is_del:
self.line_term()
return self
def make_local_name(self):
self.expr.make_local_name()
return self
def get_hi_lineno(self):
lineno = self.expr.get_hi_lineno()
if self.subs:
lineno = (self.subs)[-1].get_hi_lineno()
return lineno
class NodeTryExcept(Node):
"""Define exception handlers.
"""
tag = 'TryExcept'
def __init__(self, indent, lineno, body, handlers, else_):
Node.__init__(self, indent, lineno)
self.body = transform(indent + 1, lineno, body)
self.handlers = [(transform(indent, lineno, expr), transform(indent,
lineno, target), transform(indent + 1, lineno,
suite)) for (expr, target, suite) in handlers]
self.else_ = transform(indent + 1, lineno, else_)
self.has_finally = False
return
def put(self, can_split=False):
if self.has_finally:
pass
else:
self.line_init()
self.line_more('try:')
self.line_term(self.body.get_lineno() - 1)
self.body.put()
for (expr, target, suite) in self.handlers:
self.line_init()
self.line_more('except')
if expr is None:
pass
else:
self.line_more(SPACE)
expr.put()
if target is None:
pass
else:
self.line_more(LIST_SEP, can_break_after=True)
target.put()
self.line_more(':')
self.line_term(suite.get_lineno() - 1)
suite.put()
if self.else_ is None:
pass
else:
self.line_init()
self.line_more('else:')
self.line_term(self.else_.get_lineno() - 1)
self.else_.put()
return self
def marshal_names(self):
self.body.marshal_names()
for (expr, target, suite) in self.handlers:
suite.marshal_names()
if self.else_ is None:
pass
else:
self.else_.marshal_names()
return self
class NodeTryFinally(Node):
"""Force housekeeping code to execute even after an unhandled
except is raised and before the default handling takes care of it.
"""
tag = 'TryFinally'
def __init__(self, indent, lineno, body, final):
Node.__init__(self, indent, lineno)
if isinstance(body, compiler.ast.TryExcept):
self.body = transform(indent, lineno, body)
self.body.has_finally = True
else:
self.body = transform(indent + 1, lineno, body)
self.final = transform(indent + 1, lineno, final)
return
def put(self, can_split=False):
self.line_init()
self.line_more('try:')
self.line_term(self.body.get_lineno() - 1)
self.body.put()
self.line_init()
self.line_more('finally:')
self.line_term(self.final.get_lineno() - 1)
self.final.put()
return self
def marshal_names(self):
self.body.marshal_names()
self.final.marshal_names()
return self
class NodeTuple(Node):
"""Declaration of an immutable tuple.
"""
tag = 'Tuple'
def __init__(self, indent, lineno, nodes):
Node.__init__(self, indent, lineno)
self.nodes = [transform(indent, lineno, node) for node in nodes]
return
def put(self, can_split=False):
self.line_more('(', tab_set=True)
if len(self.nodes) > MAX_SEPS_BEFORE_SPLIT_LINE:
self.line_term()
self.inc_margin()
for node in self.nodes:
self.line_init()
node.put(can_split=True)
self.line_more(LIST_SEP)
self.line_term()
self.line_init()
self.dec_margin()
else:
for node in (self.nodes)[:1]:
node.put(can_split=True)
self.line_more(LIST_SEP, can_split_after=True)
for node in (self.nodes)[1:2]:
node.put(can_split=True)
for node in (self.nodes)[2:]:
self.line_more(LIST_SEP, can_split_after=True)
node.put(can_split=True)
self.line_more(')', tab_clear=True)
return self
def get_hi_lineno(self):
lineno = Node.get_hi_lineno(self)
if self.nodes:
lineno = (self.nodes)[-1].get_hi_lineno()
return lineno
class NodeUnaryAdd(NodeOpr):
"""Algebraic positive.
"""
tag = 'UnaryAdd'
def __init__(self, indent, lineno, expr):
Node.__init__(self, indent, lineno)
self.expr = transform(indent, lineno, expr)
return
def put(self, can_split=False):
self.line_more('+')
self.put_expr(self.expr, can_split=can_split)
return self
def get_hi_lineno(self):
return self.expr.get_hi_lineno()
class NodeUnarySub(NodeOpr):
"""Algebraic negative.
"""
tag = 'UnarySub'
def __init__(self, indent, lineno, expr):
Node.__init__(self, indent, lineno)
self.expr = transform(indent, lineno, expr)
return
def put(self, can_split=False):
self.line_more('-')
self.put_expr(self.expr, can_split=can_split)
return self
def get_hi_lineno(self):
return self.expr.get_hi_lineno()
class NodeWhile(Node):
"""While loop.
"""
tag = 'While'
def __init__(self, indent, lineno, test, body, else_):
Node.__init__(self, indent, lineno)
self.test = transform(indent, lineno, test)
self.body = transform(indent + 1, lineno, body)
self.else_ = transform(indent + 1, lineno, else_)
return
def put(self, can_split=False):
self.line_init()
self.line_more('while ')
self.test.put(can_split=can_split)
self.line_more(':')
self.line_term(self.body.get_lineno() - 1)
self.body.put()
if self.else_ is None:
pass
else:
self.line_init()
self.line_more('else:')
self.line_term(self.else_.get_lineno() - 1)
self.else_.put()
return self
def marshal_names(self):
self.body.marshal_names()
if self.else_ is None:
pass
else:
self.else_.marshal_names()
return
def get_hi_lineno(self):
return self.test.get_hi_lineno()
class NodeWith(Node):
"""Context manager.
"""
tag = 'With'
def __init__(self, indent, lineno, expr, vars, body):
Node.__init__(self, indent, lineno)
self.expr = transform(indent, lineno, expr)
self.vars = transform(indent, lineno, vars)
self.body = transform(indent + 1, lineno, body)
return
def put(self, can_split=False):
self.line_init()
self.line_more('with ')
self.expr.put(can_split=can_split)
if self.vars is None:
pass
else:
self.line_more(' as ', can_break_after=True)
self.vars.put(can_split=can_split)
self.line_more(':')
self.line_term(self.body.get_lineno() - 1)
self.body.put()
return self
def marshal_names(self):
if self.vars is None:
pass
else:
self.vars.make_local_name()
self.body.marshal_names()
return self
def get_hi_lineno(self):
lineno = self.expr.get_hi_lineno()
if self.vars is None:
pass
else:
lineno = self.vars.get_hi_lineno()
return lineno
class NodeYield(Node):
"""Yield a generator value.
"""
tag = 'Yield'
def __init__(self, indent, lineno, value):
Node.__init__(self, indent, lineno)
self.value = transform(indent, lineno, value)
return
def put(self, can_split=False):
self.line_more('yield ') # 2006 Dec 13
self.value.put(can_split=can_split)
return self
def get_hi_lineno(self):
return self.value.get_hi_lineno()
# The abstract syntax tree returns the nodes of arithmetic and logical
# expressions in the correct order for evaluation, but, to reconstruct
# the specifying code in general and to output it correctly, we need
# to insert parentheses to enforce the correct order.
# This is a Python Version Dependency.
OPERATOR_PRECEDENCE = [
(NodeIfExp, ),
(NodeLambda, ),
(NodeOr, ),
(NodeAnd, ),
(NodeNot, ),
(NodeCompare, ),
(NodeBitOr, ),
(NodeBitXor, ),
(NodeBitAnd, ),
(NodeLeftShift, NodeRightShift),
(NodeAdd, NodeSub),
(NodeMul, NodeDiv, NodeFloorDiv, NodeMod),
(NodeUnaryAdd, NodeUnarySub),
(NodeInvert, ),
(NodePower, ),
(NodeAsgAttr, NodeGetAttr),
(NodeSubscript, ),
(NodeSlice, ),
(NodeCallFunc, ),
(NodeTuple, ),
(NodeList, ),
(NodeDict, ),
(NodeBackquote, ),
]
OPERATORS = []
OPERATOR_TRUMPS = {}
OPERATOR_LEVEL = {}
for LEVEL in OPERATOR_PRECEDENCE:
for OPERATOR in LEVEL:
OPERATOR_LEVEL[OPERATOR] = LEVEL
OPERATOR_TRUMPS[OPERATOR] = OPERATORS[:] # a static copy.
OPERATORS.extend(LEVEL)
def tidy_up(file_in=sys.stdin, file_out=sys.stdout): # 2007 Jan 22
"""Clean up, regularize, and reformat the text of a Python script.
File_in is a file name or a file-like object with a *read* method,
which contains the input script.
File_out is a file name or a file-like object with a *write*
method to contain the output script.
"""
global INPUT, OUTPUT, COMMENTS, NAME_SPACE
INPUT = InputUnit(file_in)
OUTPUT = OutputUnit(file_out)
COMMENTS = Comments()
NAME_SPACE = NameSpace()
module = compiler.parse(str(INPUT))
module = transform(indent=ZERO, lineno=ZERO, node=module)
del INPUT
module.push_scope().marshal_names().put().pop_scope()
COMMENTS.merge(fin=True)
OUTPUT.close()
return
if __name__ == "__main__": # 2007 Jan 22
if len(sys.argv) > 1:
file_in = sys.argv[1]
else:
file_in = '-'
if file_in in ['-']:
file_in = sys.stdin
if len(sys.argv) > 2:
file_out = sys.argv[2]
else:
file_out = '-'
if file_out in ['-']:
file_out = sys.stdout
tidy_up(file_in, file_out)
# Fin
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