| u""" |
| Fixer for: |
| it.__next__() -> it.next(). |
| next(it) -> it.next(). |
| """ |
|
|
| from lib2to3.pgen2 import token |
| from lib2to3.pygram import python_symbols as syms |
| from lib2to3 import fixer_base |
| from lib2to3.fixer_util import Name, Call, find_binding, Attr |
|
|
| bind_warning = u"Calls to builtin next() possibly shadowed by global binding" |
|
|
|
|
| class FixNext(fixer_base.BaseFix): |
|
|
| PATTERN = u""" |
| power< base=any+ trailer< '.' attr='__next__' > any* > |
| | |
| power< head='next' trailer< '(' arg=any ')' > any* > |
| | |
| classdef< 'class' base=any+ ':' |
| suite< any* |
| funcdef< 'def' |
| attr='__next__' |
| parameters< '(' NAME ')' > any+ > |
| any* > > |
| """ |
|
|
| def transform(self, node, results): |
| assert results |
|
|
| base = results.get(u"base") |
| attr = results.get(u"attr") |
| head = results.get(u"head") |
| arg_ = results.get(u"arg") |
| if arg_: |
| arg = arg_.clone() |
| head.replace(Attr(Name(unicode(arg),prefix=head.prefix), |
| Name(u"next"))) |
| arg_.remove() |
| elif base: |
| attr.replace(Name(u"next", prefix=attr.prefix)) |
|
|
