efortuna@google.com
ce74c20fdb
BUG= Review URL: https://codereview.chromium.org//12082122 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@17994 260f80e4-7a28-3924-810f-c04153c831b5
67 lines
1.7 KiB
Python
67 lines
1.7 KiB
Python
#!/usr/bin/python
|
|
# Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
|
|
# for details. All rights reserved. Use of this source code is governed by a
|
|
# BSD-style license that can be found in the LICENSE file.
|
|
|
|
"""This module provides maps and sets that report unused elements."""
|
|
|
|
_monitored_values = []
|
|
|
|
|
|
def FinishMonitoring():
|
|
for value in _monitored_values:
|
|
value.CheckUsage()
|
|
|
|
class MonitoredCollection(object):
|
|
def __init__(self, name):
|
|
self.name = name
|
|
self._used_keys = set()
|
|
_monitored_values.append(self)
|
|
|
|
class Dict(MonitoredCollection):
|
|
"""Wrapper for a read-only dict that reports unused keys."""
|
|
|
|
def __init__(self, name, map):
|
|
super(Dict, self).__init__(name)
|
|
self._map = map
|
|
|
|
def __getitem__(self, key):
|
|
self._used_keys.add(key)
|
|
return self._map[key]
|
|
|
|
def __setitem__(self, key, value):
|
|
self._map[key] = value
|
|
|
|
def __contains__(self, key):
|
|
self._used_keys.add(key)
|
|
return key in self._map
|
|
|
|
def __iter__(self):
|
|
return self._map.__iter__()
|
|
|
|
def get(self, key, default=None):
|
|
self._used_keys.add(key)
|
|
return self._map.get(key, default)
|
|
|
|
def CheckUsage(self):
|
|
for v in sorted(self._map.keys()):
|
|
if v not in self._used_keys:
|
|
print "dict '%s' has unused key '%s'" % (self.name, v)
|
|
|
|
|
|
class Set(MonitoredCollection):
|
|
"""Wrapper for a read-only set that reports unused keys."""
|
|
|
|
def __init__(self, name, a_set):
|
|
super(Set, self).__init__(name)
|
|
self._set = a_set
|
|
|
|
def __contains__(self, key):
|
|
self._used_keys.add(key)
|
|
return key in self._set
|
|
|
|
def CheckUsage(self):
|
|
for v in sorted(self._set):
|
|
if v not in self._used_keys:
|
|
print "set '%s' has unused key '%s'" % (self.name, v)
|