|
|
| System | : | Linux MiraNet 3.0.0-14-generic-pae #23-Ubuntu SMP Mon Nov 21 22:07:10 UTC 2011 i686 |
|---|
| Software | : | Apache. PHP/5.3.6-13ubuntu3.10 |
|---|
| ID | : | uid=65534(nobody) gid=65534(nogroup) groups=65534(nogroup)
|
|---|
|
| Safe Mode | : | OFF |
|---|
| Open_Basedir | : | OFF |
|---|
| Freespace | : | 21.69 GB of 70.42 GB (30.8%) |
|---|
|
|
MySQL: ON MSSQL: OFF Oracle: OFF PostgreSQL: OFF Curl: OFF Sockets: ON Fetch: OFF Wget: ON Perl: ON |
|
Disabled Functions: pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,
|
[ System Info ]
[ Processes ]
[ SQL Manager ]
[ Eval ]
[ Encoder ]
[ Mailer ]
[ Back Connection ]
[ Backdoor Server ]
[ Kernel Exploit Search ]
[ MD5 Decrypter ]
[ Reverse IP ]
[ Kill Shell ]
[ FTP Brute-Force ]
|
|
/
usr/
lib/
python2.7/
lib2to3/
fixes/
- drwxr-xr-x
|
Viewing file:  fix_next.py (3.11 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
"""Fixer for it.next() -> next(it), per PEP 3114."""
# Author: Collin Winter
# Things that currently aren't covered:
# - listcomp "next" names aren't warned
# - "with" statement targets aren't checked
# Local imports
from ..pgen2 import token
from ..pygram import python_symbols as syms
from .. import fixer_base
from ..fixer_util import Name, Call, find_binding
bind_warning = "Calls to builtin next() possibly shadowed by global binding"
class FixNext(fixer_base.BaseFix):
BM_compatible = True
PATTERN = """
power< base=any+ trailer< '.' attr='next' > trailer< '(' ')' > >
|
power< head=any+ trailer< '.' attr='next' > not trailer< '(' ')' > >
|
classdef< 'class' any+ ':'
suite< any*
funcdef< 'def'
name='next'
parameters< '(' NAME ')' > any+ >
any* > >
|
global=global_stmt< 'global' any* 'next' any* >
"""
order = "pre" # Pre-order tree traversal
def start_tree(self, tree, filename):
super(FixNext, self).start_tree(tree, filename)
n = find_binding(u'next', tree)
if n:
self.warning(n, bind_warning)
self.shadowed_next = True
else:
self.shadowed_next = False
def transform(self, node, results):
assert results
base = results.get("base")
attr = results.get("attr")
name = results.get("name")
if base:
if self.shadowed_next:
attr.replace(Name(u"__next__", prefix=attr.prefix))
else:
base = [n.clone() for n in base]
base[0].prefix = u""
node.replace(Call(Name(u"next", prefix=node.prefix), base))
elif name:
n = Name(u"__next__", prefix=name.prefix)
name.replace(n)
elif attr:
# We don't do this transformation if we're assigning to "x.next".
# Unfortunately, it doesn't seem possible to do this in PATTERN,
# so it's being done here.
if is_assign_target(node):
head = results["head"]
if "".join([str(n) for n in head]).strip() == u'__builtin__':
self.warning(node, bind_warning)
return
attr.replace(Name(u"__next__"))
elif "global" in results:
self.warning(node, bind_warning)
self.shadowed_next = True
### The following functions help test if node is part of an assignment
### target.
def is_assign_target(node):
assign = find_assign(node)
if assign is None:
return False
for child in assign.children:
if child.type == token.EQUAL:
return False
elif is_subtree(child, node):
return True
return False
def find_assign(node):
if node.type == syms.expr_stmt:
return node
if node.type == syms.simple_stmt or node.parent is None:
return None
return find_assign(node.parent)
def is_subtree(root, node):
if root == node:
return True
return any(is_subtree(c, node) for c in root.children)
|
