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Unified Diff: third_party/google-endpoints/libpasteurize/fixes/fix_next.py

Issue 2666783008: Add google-endpoints to third_party/. (Closed)
Patch Set: Created 3 years, 11 months ago
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Index: third_party/google-endpoints/libpasteurize/fixes/fix_next.py
diff --git a/third_party/google-endpoints/libpasteurize/fixes/fix_next.py b/third_party/google-endpoints/libpasteurize/fixes/fix_next.py
new file mode 100644
index 0000000000000000000000000000000000000000..9ecb6c0439e08a706d114e0ff17402fdb6f611cd
--- /dev/null
+++ b/third_party/google-endpoints/libpasteurize/fixes/fix_next.py
@@ -0,0 +1,43 @@
+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))

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