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u"""
Fixer for complicated imports
"""
from lib2to3 import fixer_base
from lib2to3.fixer_util import Name, String, FromImport, Newline, Comma
from libfuturize.fixer_util import touch_import_top
TK_BASE_NAMES = (u'ACTIVE', u'ALL', u'ANCHOR', u'ARC',u'BASELINE', u'BEVEL', u'BOTH',
u'BOTTOM', u'BROWSE', u'BUTT', u'CASCADE', u'CENTER', u'CHAR',
u'CHECKBUTTON', u'CHORD', u'COMMAND', u'CURRENT', u'DISABLED',
u'DOTBOX', u'E', u'END', u'EW', u'EXCEPTION', u'EXTENDED', u'FALSE',
u'FIRST', u'FLAT', u'GROOVE', u'HIDDEN', u'HORIZONTAL', u'INSERT',
u'INSIDE', u'LAST', u'LEFT', u'MITER', u'MOVETO', u'MULTIPLE', u'N',
u'NE', u'NO', u'NONE', u'NORMAL', u'NS', u'NSEW', u'NUMERIC', u'NW',
u'OFF', u'ON', u'OUTSIDE', u'PAGES', u'PIESLICE', u'PROJECTING',
u'RADIOBUTTON', u'RAISED', u'READABLE', u'RIDGE', u'RIGHT',
u'ROUND', u'S', u'SCROLL', u'SE', u'SEL', u'SEL_FIRST', u'SEL_LAST',
u'SEPARATOR', u'SINGLE', u'SOLID', u'SUNKEN', u'SW', u'StringTypes',
u'TOP', u'TRUE', u'TclVersion', u'TkVersion', u'UNDERLINE',
u'UNITS', u'VERTICAL', u'W', u'WORD', u'WRITABLE', u'X', u'Y', u'YES',
u'wantobjects')
PY2MODULES = {
u'urllib2' : (
u'AbstractBasicAuthHandler', u'AbstractDigestAuthHandler',
u'AbstractHTTPHandler', u'BaseHandler', u'CacheFTPHandler',
u'FTPHandler', u'FileHandler', u'HTTPBasicAuthHandler',
u'HTTPCookieProcessor', u'HTTPDefaultErrorHandler',
u'HTTPDigestAuthHandler', u'HTTPError', u'HTTPErrorProcessor',
u'HTTPHandler', u'HTTPPasswordMgr',
u'HTTPPasswordMgrWithDefaultRealm', u'HTTPRedirectHandler',
u'HTTPSHandler', u'OpenerDirector', u'ProxyBasicAuthHandler',
u'ProxyDigestAuthHandler', u'ProxyHandler', u'Request',
u'StringIO', u'URLError', u'UnknownHandler', u'addinfourl',
u'build_opener', u'install_opener', u'parse_http_list',
u'parse_keqv_list', u'randombytes', u'request_host', u'urlopen'),
u'urllib' : (
u'ContentTooShortError', u'FancyURLopener',u'URLopener',
u'basejoin', u'ftperrors', u'getproxies',
u'getproxies_environment', u'localhost', u'pathname2url',
u'quote', u'quote_plus', u'splitattr', u'splithost',
u'splitnport', u'splitpasswd', u'splitport', u'splitquery',
u'splittag', u'splittype', u'splituser', u'splitvalue',
u'thishost', u'unquote', u'unquote_plus', u'unwrap',
u'url2pathname', u'urlcleanup', u'urlencode', u'urlopen',
u'urlretrieve',),
u'urlparse' : (
u'parse_qs', u'parse_qsl', u'urldefrag', u'urljoin',
u'urlparse', u'urlsplit', u'urlunparse', u'urlunsplit'),
u'dbm' : (
u'ndbm', u'gnu', u'dumb'),
u'anydbm' : (
u'error', u'open'),
u'whichdb' : (
u'whichdb',),
u'BaseHTTPServer' : (
u'BaseHTTPRequestHandler', u'HTTPServer'),
u'CGIHTTPServer' : (
u'CGIHTTPRequestHandler',),
u'SimpleHTTPServer' : (
u'SimpleHTTPRequestHandler',),
u'FileDialog' : TK_BASE_NAMES + (
u'FileDialog', u'LoadFileDialog', u'SaveFileDialog',
u'dialogstates', u'test'),
u'tkFileDialog' : (
u'Directory', u'Open', u'SaveAs', u'_Dialog', u'askdirectory',
u'askopenfile', u'askopenfilename', u'askopenfilenames',
u'askopenfiles', u'asksaveasfile', u'asksaveasfilename'),
u'SimpleDialog' : TK_BASE_NAMES + (
u'SimpleDialog',),
u'tkSimpleDialog' : TK_BASE_NAMES + (
u'askfloat', u'askinteger', u'askstring', u'Dialog'),
u'SimpleXMLRPCServer' : (
u'CGIXMLRPCRequestHandler', u'SimpleXMLRPCDispatcher',
u'SimpleXMLRPCRequestHandler', u'SimpleXMLRPCServer',
u'list_public_methods', u'remove_duplicates',
u'resolve_dotted_attribute'),
u'DocXMLRPCServer' : (
u'DocCGIXMLRPCRequestHandler', u'DocXMLRPCRequestHandler',
u'DocXMLRPCServer', u'ServerHTMLDoc',u'XMLRPCDocGenerator'),
}
MAPPING = { u'urllib.request' :
(u'urllib2', u'urllib'),
u'urllib.error' :
(u'urllib2', u'urllib'),
u'urllib.parse' :
(u'urllib2', u'urllib', u'urlparse'),
u'dbm.__init__' :
(u'anydbm', u'whichdb'),
u'http.server' :
(u'CGIHTTPServer', u'SimpleHTTPServer', u'BaseHTTPServer'),
u'tkinter.filedialog' :
(u'tkFileDialog', u'FileDialog'),
u'tkinter.simpledialog' :
(u'tkSimpleDialog', u'SimpleDialog'),
u'xmlrpc.server' :
(u'DocXMLRPCServer', u'SimpleXMLRPCServer'),
}
# helps match 'http', as in 'from http.server import ...'
simple_name = u"name='%s'"
# helps match 'server', as in 'from http.server import ...'
simple_attr = u"attr='%s'"
# helps match 'HTTPServer', as in 'from http.server import HTTPServer'
simple_using = u"using='%s'"
# helps match 'urllib.request', as in 'import urllib.request'
dotted_name = u"dotted_name=dotted_name< %s '.' %s >"
# helps match 'http.server', as in 'http.server.HTTPServer(...)'
power_twoname = u"pow=power< %s trailer< '.' %s > trailer< '.' using=any > any* >"
# helps match 'dbm.whichdb', as in 'dbm.whichdb(...)'
power_onename = u"pow=power< %s trailer< '.' using=any > any* >"
# helps match 'from http.server import HTTPServer'
# also helps match 'from http.server import HTTPServer, SimpleHTTPRequestHandler'
# also helps match 'from http.server import *'
from_import = u"from_import=import_from< 'from' %s 'import' (import_as_name< using=any 'as' renamed=any> | in_list=import_as_names< using=any* > | using='*' | using=NAME) >"
# helps match 'import urllib.request'
name_import = u"name_import=import_name< 'import' (%s | in_list=dotted_as_names< imp_list=any* >) >"
#############
# WON'T FIX #
#############
# helps match 'import urllib.request as name'
name_import_rename = u"name_import_rename=dotted_as_name< %s 'as' renamed=any >"
# helps match 'from http import server'
from_import_rename = u"from_import_rename=import_from< 'from' %s 'import' (%s | import_as_name< %s 'as' renamed=any > | in_list=import_as_names< any* (%s | import_as_name< %s 'as' renamed=any >) any* >) >"
def all_modules_subpattern():
u"""
Builds a pattern for all toplevel names
(urllib, http, etc)
"""
names_dot_attrs = [mod.split(u".") for mod in MAPPING]
ret = u"( " + u" | ".join([dotted_name % (simple_name % (mod[0]),
simple_attr % (mod[1])) for mod in names_dot_attrs])
ret += u" | "
ret += u" | ".join([simple_name % (mod[0]) for mod in names_dot_attrs if mod[1] == u"__init__"]) + u" )"
return ret
def build_import_pattern(mapping1, mapping2):
u"""
mapping1: A dict mapping py3k modules to all possible py2k replacements
mapping2: A dict mapping py2k modules to the things they do
This builds a HUGE pattern to match all ways that things can be imported
"""
# py3k: urllib.request, py2k: ('urllib2', 'urllib')
yield from_import % (all_modules_subpattern())
for py3k, py2k in mapping1.items():
name, attr = py3k.split(u'.')
s_name = simple_name % (name)
s_attr = simple_attr % (attr)
d_name = dotted_name % (s_name, s_attr)
yield name_import % (d_name)
yield power_twoname % (s_name, s_attr)
if attr == u'__init__':
yield name_import % (s_name)
yield power_onename % (s_name)
yield name_import_rename % (d_name)
yield from_import_rename % (s_name, s_attr, s_attr, s_attr, s_attr)
class FixImports2(fixer_base.BaseFix):
run_order = 4
PATTERN = u" | \n".join(build_import_pattern(MAPPING, PY2MODULES))
def transform(self, node, results):
touch_import_top(u'future', u'standard_library', node)
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