Add future 0.18.2

lib/libpasteurize/fixes/fix_imports.py

@@ -0,0 +1,112 @@
+u"""
+Fixer for standard library imports renamed in Python 3
+"""
+
+from lib2to3 import fixer_base
+from lib2to3.fixer_util import Name, is_probably_builtin, Newline, does_tree_import
+from lib2to3.pygram import python_symbols as syms
+from lib2to3.pgen2 import token
+from lib2to3.pytree import Node, Leaf
+
+from libfuturize.fixer_util import touch_import_top
+# from ..fixer_util import NameImport
+
+# used in simple_mapping_to_pattern()
+MAPPING = {u"reprlib": u"repr",
+           u"winreg": u"_winreg",
+           u"configparser": u"ConfigParser",
+           u"copyreg": u"copy_reg",
+           u"queue": u"Queue",
+           u"socketserver": u"SocketServer",
+           u"_markupbase": u"markupbase",
+           u"test.support": u"test.test_support",
+           u"dbm.bsd": u"dbhash",
+           u"dbm.ndbm": u"dbm",
+           u"dbm.dumb": u"dumbdbm",
+           u"dbm.gnu": u"gdbm",
+           u"html.parser": u"HTMLParser",
+           u"html.entities": u"htmlentitydefs",
+           u"http.client": u"httplib",
+           u"http.cookies": u"Cookie",
+           u"http.cookiejar": u"cookielib",
+#          "tkinter": "Tkinter",
+           u"tkinter.dialog": u"Dialog",
+           u"tkinter._fix": u"FixTk",
+           u"tkinter.scrolledtext": u"ScrolledText",
+           u"tkinter.tix": u"Tix",
+           u"tkinter.constants": u"Tkconstants",
+           u"tkinter.dnd": u"Tkdnd",
+           u"tkinter.__init__": u"Tkinter",
+           u"tkinter.colorchooser": u"tkColorChooser",
+           u"tkinter.commondialog": u"tkCommonDialog",
+           u"tkinter.font": u"tkFont",
+           u"tkinter.ttk": u"ttk",
+           u"tkinter.messagebox": u"tkMessageBox",
+           u"tkinter.turtle": u"turtle",
+           u"urllib.robotparser": u"robotparser",
+           u"xmlrpc.client": u"xmlrpclib",
+           u"builtins": u"__builtin__",
+}
+
+# generic strings to help build patterns
+# these variables mean (with http.client.HTTPConnection as an example):
+# name = http
+# attr = client
+# used = HTTPConnection
+# fmt_name is a formatted subpattern (simple_name_match or dotted_name_match)
+
+# helps match 'queue', as in 'from queue import ...'
+simple_name_match = u"name='%s'"
+# helps match 'client', to be used if client has been imported from http
+subname_match = u"attr='%s'"
+# helps match 'http.client', as in 'import urllib.request'
+dotted_name_match = u"dotted_name=dotted_name< %s '.' %s >"
+# helps match 'queue', as in 'queue.Queue(...)'
+power_onename_match = u"%s"
+# helps match 'http.client', as in 'http.client.HTTPConnection(...)'
+power_twoname_match = u"power< %s trailer< '.' %s > any* >"
+# helps match 'client.HTTPConnection', if 'client' has been imported from http
+power_subname_match = u"power< %s any* >"
+# helps match 'from http.client import HTTPConnection'
+from_import_match = u"from_import=import_from< 'from' %s 'import' imported=any >"
+# helps match 'from http import client'
+from_import_submod_match = u"from_import_submod=import_from< 'from' %s 'import' (%s | import_as_name< %s 'as' renamed=any > | import_as_names< any* (%s | import_as_name< %s 'as' renamed=any >) any* > ) >"
+# helps match 'import urllib.request'
+name_import_match = u"name_import=import_name< 'import' %s > | name_import=import_name< 'import' dotted_as_name< %s 'as' renamed=any > >"
+# helps match 'import http.client, winreg'
+multiple_name_import_match = u"name_import=import_name< 'import' dotted_as_names< names=any* > >"
+
+def all_patterns(name):
+    u"""
+    Accepts a string and returns a pattern of possible patterns involving that name
+    Called by simple_mapping_to_pattern for each name in the mapping it receives.
+    """
+
+    # i_ denotes an import-like node
+    # u_ denotes a node that appears to be a usage of the name
+    if u'.' in name:
+        name, attr = name.split(u'.', 1)
+        simple_name = simple_name_match % (name)
+        simple_attr = subname_match % (attr)
+        dotted_name = dotted_name_match % (simple_name, simple_attr)
+        i_from = from_import_match % (dotted_name)
+        i_from_submod = from_import_submod_match % (simple_name, simple_attr, simple_attr, simple_attr, simple_attr)
+        i_name = name_import_match % (dotted_name, dotted_name)
+        u_name = power_twoname_match % (simple_name, simple_attr)
+        u_subname = power_subname_match % (simple_attr)
+        return u' | \n'.join((i_name, i_from, i_from_submod, u_name, u_subname))
+    else:
+        simple_name = simple_name_match % (name)
+        i_name = name_import_match % (simple_name, simple_name)
+        i_from = from_import_match % (simple_name)
+        u_name = power_onename_match % (simple_name)
+        return u' | \n'.join((i_name, i_from, u_name))
+
+
+class FixImports(fixer_base.BaseFix):
+
+    PATTERN = u' | \n'.join([all_patterns(name) for name in MAPPING])
+    PATTERN = u' | \n'.join((PATTERN, multiple_name_import_match))
+
+    def transform(self, node, results):
+        touch_import_top(u'future', u'standard_library', node)