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# Copyright 2015 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from py_utils.refactor import snippet
from six.moves import range # pylint: disable=redefined-builtin
class AnnotatedSymbol(snippet.Symbol):
def __init__(self, symbol_type, children):
super(AnnotatedSymbol, self).__init__(symbol_type, children)
self._modified = False
@property
def modified(self):
if self._modified:
return True
return super(AnnotatedSymbol, self).modified
def __setattr__(self, name, value):
if (hasattr(self.__class__, name) and
isinstance(getattr(self.__class__, name), property)):
self._modified = True
return super(AnnotatedSymbol, self).__setattr__(name, value)
def Cut(self, child):
for i in range(len(self._children)):
if self._children[i] == child:
self._modified = True
del self._children[i]
break
else:
raise ValueError('%s is not in %s.' % (child, self))
def Paste(self, child):
self._modified = True
self._children.append(child)
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