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Unified Diff: infra_libs/infra_types/infra_types.py

Issue 2213143002: Add infra_libs as a bootstrap dependency. (Closed) Base URL: https://chromium.googlesource.com/infra/infra.git@master
Patch Set: Removed the ugly import hack Created 4 years, 4 months ago
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Index: infra_libs/infra_types/infra_types.py
diff --git a/infra_libs/infra_types/infra_types.py b/infra_libs/infra_types/infra_types.py
deleted file mode 100644
index faa20e043dc18b48c36562db1f409fd2bcfd916a..0000000000000000000000000000000000000000
--- a/infra_libs/infra_types/infra_types.py
+++ /dev/null
@@ -1,83 +0,0 @@
-# Copyright 2014 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.
-
-import collections
-import operator
-
-
-def freeze(obj):
- """Takes a generic object ``obj``, and returns an immutable version of it.
-
- Supported types:
- * dict / OrderedDict -> FrozenDict
- * list -> tuple
- * set -> frozenset
- * any object with a working __hash__ implementation (assumes that hashable
- means immutable)
-
- Will raise TypeError if you pass an object which is not hashable.
- """
- if isinstance(obj, dict):
- return FrozenDict((freeze(k), freeze(v)) for k, v in obj.iteritems())
- elif isinstance(obj, (list, tuple)):
- return tuple(freeze(i) for i in obj)
- elif isinstance(obj, set):
- return frozenset(freeze(i) for i in obj)
- else:
- hash(obj)
- return obj
-
-
-def thaw(obj):
- """Takes an object from freeze() and returns a mutable copy of it."""
- if isinstance(obj, FrozenDict):
- return collections.OrderedDict(
- (thaw(k), thaw(v)) for k, v in obj.iteritems())
- elif isinstance(obj, tuple):
- return list(thaw(i) for i in obj)
- elif isinstance(obj, frozenset):
- return set(thaw(i) for i in obj)
- else:
- return obj
-
-
-class FrozenDict(collections.Mapping):
- """An immutable OrderedDict.
-
- Modified From: http://stackoverflow.com/a/2704866
- """
- def __init__(self, *args, **kwargs):
- self._d = collections.OrderedDict(*args, **kwargs)
-
- # Calculate the hash immediately so that we know all the items are
- # hashable too.
- self._hash = reduce(operator.xor,
- (hash(i) for i in enumerate(self._d.iteritems())), 0)
-
- def __eq__(self, other):
- if not isinstance(other, collections.Mapping):
- return NotImplemented
- if self is other:
- return True
- if len(self) != len(other):
- return False
- for k, v in self.iteritems():
- if k not in other or other[k] != v:
- return False
- return True
-
- def __iter__(self):
- return iter(self._d)
-
- def __len__(self):
- return len(self._d)
-
- def __getitem__(self, key):
- return self._d[key]
-
- def __hash__(self):
- return self._hash
-
- def __repr__(self):
- return 'FrozenDict(%r)' % (self._d.items(),)

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