Remove third_party/twisted_8_1

third_party/twisted_8_1/twisted/python/context.py

-# -*- test-case-name: twisted.test.test_context -*-
-# Copyright (c) 2001-2004 Twisted Matrix Laboratories.
-# See LICENSE for details.
-
-#
-
-"""
-Dynamic pseudo-scoping for Python.
-
-Call functions with context.call({key: value}, func); func and
-functions that it calls will be able to use 'context.get(key)' to
-retrieve 'value'.
-
-This is thread-safe.
-"""
-
-try:
-    from threading import local
-except ImportError:
-    local = None
-
-from twisted.python import threadable
-
-defaultContextDict = {}
-
-setDefault = defaultContextDict.__setitem__
-
-class ContextTracker:
-    def __init__(self):
-        self.contexts = [defaultContextDict]
-
-    def callWithContext(self, ctx, func, *args, **kw):
-        newContext = self.contexts[-1].copy()
-        newContext.update(ctx)
-        self.contexts.append(newContext)
-        try:
-            return func(*args,**kw)
-        finally:
-            self.contexts.pop()
-
-    def getContext(self, key, default=None):
-        return self.contexts[-1].get(key, default)
-
-
-class _ThreadedContextTracker:
-    def __init__(self):
-        self.threadId = threadable.getThreadID
-        self.contextPerThread = {}
-
-    def currentContext(self):
-        tkey = self.threadId()
-        try:
-            return self.contextPerThread[tkey]
-        except KeyError:
-            ct = self.contextPerThread[tkey] = ContextTracker()
-            return ct
-
-    def callWithContext(self, ctx, func, *args, **kw):
-        return self.currentContext().callWithContext(ctx, func, *args, **kw)
-
-    def getContext(self, key, default=None):
-        return self.currentContext().getContext(key, default)
-
-
-class _TLSContextTracker(_ThreadedContextTracker):
-    def __init__(self):
-        self.storage = local()
-
-    def currentContext(self):
-        try:
-            return self.storage.ct
-        except AttributeError:
-            ct = self.storage.ct = ContextTracker()
-            return ct
-
-if local is None:
-    ThreadedContextTracker = _ThreadedContextTracker
-else:
-    ThreadedContextTracker = _TLSContextTracker
-
-def installContextTracker(ctr):
-    global theContextTracker
-    global call
-    global get
-
-    theContextTracker = ctr
-    call = theContextTracker.callWithContext
-    get = theContextTracker.getContext
-
-installContextTracker(ThreadedContextTracker())