def transform(self, node, results):
future_import(u"division", node)
touch_import_top(u'past.utils', u'old_div', node)
expr1, expr2 = results[0].clone(), results[1].clone()
# Strip any leading space for the first number:
expr1.prefix = u''
return wrap_in_fn_call("old_div", expr1, expr2, prefix=node.prefix)
def transform(self, node, results):
future_import(u"division", node)
touch_import_top(u'past.utils', u'old_div', node)
expr1, expr2 = results[0].clone(), results[1].clone()
# Strip any leading space for the first number:
expr1.prefix = u''
return wrap_in_fn_call("old_div", expr1, expr2, prefix=node.prefix)
def transform(self, node, results):
head = results["head"]
method = results["method"][0] # Extract node for method name
tail = results["tail"]
syms = self.syms
method_name = method.value
isiter = method_name.startswith(u"iter")
isview = method_name.startswith(u"view")
head = [n.clone() for n in head]
tail = [n.clone() for n in tail]
# no changes neccessary if the call is in a special context
special = not tail and self.in_special_context(node, isiter)
new = pytree.Node(syms.power, head)
new.prefix = u""
if isiter or isview:
# replace the method with the six function
# e.g. d.iteritems() -> from six import iteritems\n iteritems(d)
new = Call(Name(method_name), [new])
touch_import_top('six', method_name, node)
elif special:
# it is not neccessary to change this case
return node
elif method_name in ("items", "values"):
# ensure to return a list in python 3
new = Call(Name(u"list" + method_name), [new])
touch_import_top('future.utils', 'list' + method_name, node)
else:
# method_name is "keys"; removed it and cast the dict to list
new = Call(Name(u"list"), [new])
if tail:
new = pytree.Node(syms.power, [new] + tail)
new.prefix = node.prefix
return new
def transform(self, node, results):
# transform_member() in lib2to3/fixes/fix_urllib.py breaks node so find_root(node)
# no longer works after the super() call below. So we find the root first:
root = find_root(node)
result = super(FixFutureStandardLibraryUrllib, self).transform(node, results)
# TODO: add a blank line between any __future__ imports and this?
touch_import_top(u'future', u'standard_library', root)
return result
def transform(self, node, results):
# transform_member() in lib2to3/fixes/fix_urllib.py breaks node so find_root(node)
# no longer works after the super() call below. So we find the root first:
root = find_root(node)
result = super(FixFutureStandardLibraryUrllib, self).transform(node, results)
# TODO: add a blank line between any __future__ imports and this?
touch_import_top(u'future', u'standard_library', root)
return result
def transform(self, node, results):
colon = results[u"colon"]
idx = node.children.index(colon)
if (node.children[idx-2].value == '(' and
node.children[idx-1].value == ')'):
del node.children[idx-2:idx]
idx -= 2
insert_object(node, idx)
touch_import_top(u'builtins', 'object', node)
def transform(self, node, results):
colon = results[u"colon"]
idx = node.children.index(colon)
if node.children[idx -
2].value == "(" and node.children[idx -
1].value == ")":
del node.children[idx - 2:idx]
idx -= 2
insert_object(node, idx)
touch_import_top(u"builtins", "object", node)
def transform(self, node, results):
if node.type == token.STRING:
touch_import_top(u'past.types', u'oldstr', node)
if _literal_re.match(node.value):
new = node.clone()
# Strip any leading space or comments:
# TODO: check: do we really want to do this?
new.prefix = u''
new.value = u'b' + new.value
wrapped = wrap_in_fn_call("oldstr", [new], prefix=node.prefix)
return wrapped
def transform(self, node, results):
if node.type == token.STRING:
touch_import_top(u'past.types', u'oldstr', node)
if _literal_re.match(node.value):
new = node.clone()
# Strip any leading space or comments:
# TODO: check: do we really want to do this?
new.prefix = u''
new.value = u'b' + new.value
wrapped = wrap_in_fn_call("oldstr", [new], prefix=node.prefix)
return wrapped
def transform(self, node, results):
if self.skip:
return
future_import(u"division", node)
expr1, expr2 = results[0].clone(), results[1].clone()
# Strip any leading space for the first number:
expr1.prefix = u''
# if expr1 or expr2 are obviously floats, we don't need to wrap in
# old_div, as the behavior of division between any number and a float
# should be the same in 2 or 3
if _is_floaty(expr1) or _is_floaty(expr2):
return
touch_import_top(u'past.utils', u'old_div', node)
return wrap_in_fn_call("old_div", (expr1, expr2), prefix=node.prefix)
def transform(self, node, results):
import_mod = results.get("module_name")
if import_mod:
mod_name = import_mod.value
if len(self.mapping[mod_name]) > 1:
new_name1, new_name2 = map(str, self.mapping[mod_name])
# import_mod.replace(Name(new_name, prefix=import_mod.prefix))
children = [
Leaf(token.NAME, new_name1, prefix=u" "),
Leaf(token.NAME, u"as", prefix=u" "),
Leaf(token.NAME, new_name2, prefix=u" ")
]
imp = Node(syms.dotted_as_name, children)
else:
new_name = self.mapping[mod_name][0]
imp = Name(new_name, prefix=import_mod.prefix)
new_name2 = new_name
import_mod.replace(imp)
if "name_import" in results:
# If it's not a "from x import x, y" or "import x as y" import,
# marked its usage to be replaced.
# TODO: fix this so that each module is imported only once.
self.replace[mod_name] = new_name2
if "multiple_imports" in results:
# This is a nasty hack to fix multiple imports on a line (e.g.,
# "import StringIO, urlparse"). The problem is that I can't
# figure out an easy way to make a pattern recognize the keys of
# MAPPING randomly sprinkled in an import statement.
results = self.match(node)
if results:
self.transform(node, results)
else:
# Replace usage of the module.
bare_name = results["bare_with_attr"][0]
new_name = self.replace.get(bare_name.value)
if new_name:
bare_name.replace(Name(new_name, prefix=bare_name.prefix))
touch_import_top(u'future', u'standard_library', node)
def transform(self, node, results):
import_mod = results.get("module_name")
if import_mod:
mod_name = import_mod.value
if len(self.mapping[mod_name]) > 1:
new_name1, new_name2 = map(str, self.mapping[mod_name])
# import_mod.replace(Name(new_name, prefix=import_mod.prefix))
children = [Leaf(token.NAME, new_name1, prefix=u" "),
Leaf(token.NAME, u"as", prefix=u" "),
Leaf(token.NAME, new_name2, prefix=u" ")]
imp = Node(syms.dotted_as_name, children)
else:
new_name = self.mapping[mod_name][0]
imp = Name(new_name, prefix=import_mod.prefix)
new_name2 = new_name
import_mod.replace(imp)
if "name_import" in results:
# If it's not a "from x import x, y" or "import x as y" import,
# marked its usage to be replaced.
# TODO: fix this so that each module is imported only once.
self.replace[mod_name] = new_name2
if "multiple_imports" in results:
# This is a nasty hack to fix multiple imports on a line (e.g.,
# "import StringIO, urlparse"). The problem is that I can't
# figure out an easy way to make a pattern recognize the keys of
# MAPPING randomly sprinkled in an import statement.
results = self.match(node)
if results:
self.transform(node, results)
else:
# Replace usage of the module.
bare_name = results["bare_with_attr"][0]
new_name = self.replace.get(bare_name.value)
if new_name:
bare_name.replace(Name(new_name, prefix=bare_name.prefix))
touch_import_top(u'future', u'standard_library', node)
def transform(self, node, results):
if self.skip:
return
future_import(u"division", node)
touch_import_top(u'past.utils', u'old_div', node)
return wrap_in_fn_call("old_div", results, prefix=node.prefix)
def transform(self, node, results):
result = super(FixXrangeWithImport, self).transform(node, results)
touch_import_top('builtins', 'range', node)
return result
def transform(self, node, results):
touch_import_top(u'future', u'standard_library', node)
def transform(self, node, results):
# import_str = """(ascii, bytes, chr, dict, filter, hex, input,
# int, list, map, next, object, oct, open, pow,
# range, round, str, super, zip)"""
touch_import_top(u'future.builtins', '*', node)
def transform(self, node, results):
touch_import_top(u"future", u"standard_library", node)
def transform(self, node, results):
result = super(FixFutureStandardLibrary, self).transform(node, results)
# TODO: add a blank line between any __future__ imports and this?
touch_import_top(u'future', u'standard_library', node)
return result
def transform(self, node, results):
touch_import_top(u'builtins', 'object', node)
def transform(self, node, results):
if self.skip:
return
future_import(u"division", node)
touch_import_top(u"past.utils", u"old_div", node)
return wrap_in_fn_call("old_div", results, prefix=node.prefix)
def transform(self, node, results):
touch_import_top(u'future.builtins', 'object', node)
def transform(self, node, results):
name = results["name"]
touch_import_top(u'builtins', name.value, node)
def transform(self, node, results):
touch_import_top(u"future.builtins", "object", node)
def transform(self, node, results):
result = super(FixXrangeWithImport, self).transform(node, results)
touch_import_top("builtins", "range", node)
return result
def transform(self, node, results):
# import pdb; pdb.set_trace()
name = results["name"]
touch_import_top(u'future.builtins', name.value, node)
def transform(self, node, results):
# import_str = """(ascii, bytes, chr, dict, filter, hex, input,
# int, list, map, next, object, oct, open, pow,
# range, round, str, super, zip)"""
touch_import_top(u'builtins', '*', node)
def transform(self, node, results):
touch_import_top(u"builtins", "object", node)
def transform(self, node, results):
# TODO: add a blank line between any __future__ imports and this?
touch_import_top(u'future', u'standard_library', node)
def transform(self, node, results):
if self.skip:
return
future_import(u"division", node)
touch_import_top(u'past.utils', u'old_div', node)
return results
def transform(self, node, results):
result = super(FixFutureStandardLibrary, self).transform(node, results)
# TODO: add a blank line between any __future__ imports and this?
touch_import_top(u'future', u'standard_library', node)
return result
def transform(self, node, results):
if self.skip:
return
future_import(u"division", node)
touch_import_top(u'past.utils', u'old_div', node)
return results
def transform(self, node, results):
result = super(FixXrangeWithImport, self).transform(node, results)
touch_import_top('future.builtins', 'range', node)
return result
def transform(self, node, results):
# TODO: add a blank line between any __future__ imports and this?
touch_import_top(u'future', u'standard_library', node)
def transform(self, node, results):
name = results["name"]
touch_import_top(u'future.builtins', name.value, node)
def transform(self, node, results):
touch_import_top(u"past.builtins", "basestring", node)
def transform(self, node, results):
touch_import_top(u'future', u'standard_library', node)
def transform(self, node, results):
syms = self.syms
exc = results["exc"].clone()
if exc.type == token.STRING:
msg = "Python 3 does not support string exceptions"
self.cannot_convert(node, msg)
return
# Python 2 supports
# raise ((((E1, E2), E3), E4), E5), V
# as a synonym for
# raise E1, V
# Since Python 3 will not support this, we recurse down any tuple
# literals, always taking the first element.
if is_tuple(exc):
while is_tuple(exc):
# exc.children[1:-1] is the unparenthesized tuple
# exc.children[1].children[0] is the first element of the tuple
exc = exc.children[1].children[0].clone()
exc.prefix = u" "
if "tb" in results:
tb = results["tb"].clone()
else:
tb = None
if "val" in results:
val = results["val"].clone()
if is_tuple(val):
# Assume that exc is a subclass of Exception and call exc(*val).
args = [c.clone() for c in val.children[1:-1]]
exc = Call(exc, args)
elif val.type in (token.NUMBER, token.STRING):
# Handle numeric and string literals specially, e.g.
# "raise Exception, 5" -> "raise Exception(5)".
val.prefix = u""
exc = Call(exc, [val])
elif val.type == token.NAME and val.value == u"None":
# Handle None specially, e.g.
# "raise Exception, None" -> "raise Exception".
pass
else:
# val is some other expression. If val evaluates to an instance
# of exc, it should just be raised. If val evaluates to None,
# a default instance of exc should be raised (as above). If val
# evaluates to a tuple, exc(*val) should be called (as
# above). Otherwise, exc(val) should be called. We can only
# tell what to do at runtime, so defer to future.utils.raise_(),
# which handles all of these cases.
touch_import_top(u"future.utils", u"raise_", node)
exc.prefix = u""
args = [exc, Comma(), val]
if tb is not None:
args += [Comma(), tb]
return Call(Name(u"raise_"), args)
if tb is not None:
tb.prefix = ""
exc_list = Attr(exc, Name('with_traceback')) + [ArgList([tb])]
else:
exc_list = [exc]
return pytree.Node(syms.raise_stmt, [Name(u"raise")] + exc_list,
prefix=node.prefix)
def transform(self, node, results):
touch_import_top(u'builtins', 'zip', node)
def transform(self, node, results):
touch_import_top(u'past.builtins', 'basestring', node)
