def _step(self, result):
"""Takes a single step in the generator / deferred interaction."""
# Largely based on the twisted.internet.defer.inlineCallbacks implementation.
# This function is complicated by the need to prevent unbounded recursion
# arising from repeatedly yielding immediately ready deferreds. This while
# loop and the waiting variable solve that by manually unfolding the
# recursion.
while self._state != STATE_CANCELLED:
try:
# Send the last result back as the result of the yield expression.
if isinstance(result, failure.Failure):
result = result.throwExceptionIntoGenerator(self._generator)
else:
result = self._generator.send(result)
except StopIteration:
# Fell off the end, or "return" statement
if self._state != STATE_CANCELLED:
self.callback(None)
return
except defer._DefGen_Return, e: # Need to access protected member for consistency. # pylint: disable=W0212
if self._state != STATE_CANCELLED:
context.setCurrent(self._context)
self.callback(e.value)
return
except:
def _step(self, result):
"""Takes a single step in the generator / deferred interaction."""
# Largely based on the twisted.internet.defer.inlineCallbacks implementation.
# This function is complicated by the need to prevent unbounded recursion
# arising from repeatedly yielding immediately ready deferreds. This while
# loop and the waiting variable solve that by manually unfolding the
# recursion.
while self._state != STATE_CANCELLED:
try:
# Send the last result back as the result of the yield expression.
if isinstance(result, failure.Failure):
result = result.throwExceptionIntoGenerator(self._generator)
else:
result = self._generator.send(result)
except StopIteration:
# Fell off the end, or "return" statement
if self._state != STATE_CANCELLED:
self.callback(None)
return
except defer._DefGen_Return, e: # Need to access protected member for consistency. # pylint: disable=W0212
if self._state != STATE_CANCELLED:
context.setCurrent(self._context)
self.callback(e.value)
return
except:
def call(*args, **kwargs):
"""The new function."""
# Save and restore the context afterwards so fn() doesn't interfere with other deferreds
current = context.current()
reprFn = None
if args[:1] and hasattr(args[0], 'describeDeferred'):
reprFn = args[0].describeDeferred
className = None
if isMethod and args:
try:
className = args[0].__class__.__name__
except AttributeError:
pass
d = InlinedCallbacks(fn(*args, **kwargs),
reprFn=reprFn,
className=className)
context.setCurrent(current)
if d.called:
if isinstance(d.result, failure.Failure):
f = d.result
d.addErrback(
lambda _: None
) # Eat the error so we don't get Unhandled Error In Deferred.
f.raiseException()
else:
return d.result
else:
return d
def call(*args, **kwargs):
"""The new function."""
# Save and restore the context afterwards so fn() doesn't interfere with other deferreds
current = context.current()
reprFn = None
if args[:1] and hasattr(args[0], 'describeDeferred'):
reprFn = args[0].describeDeferred
className = None
if isMethod and args:
try:
className = args[0].__class__.__name__
except AttributeError:
pass
d = InlinedCallbacks(fn(*args, **kwargs), reprFn=reprFn, className=className)
context.setCurrent(current)
if d.called:
if isinstance(d.result, failure.Failure):
f = d.result
d.addErrback(lambda _: None) # Eat the error so we don't get Unhandled Error In Deferred.
f.raiseException()
else:
return d.result
else:
return d
def call(*args, **kwargs):
"""The new function."""
# Save and restore the context afterwards so fn() doesn't interfere with other deferreds
current = context.current()
d = InlinedCallbacks(fn(*args, **kwargs))
context.setCurrent(current)
if d.called:
if isinstance(d.result, failure.Failure):
f = d.result
d.addErrback(lambda _: None) # Eat the error so we don't get Unhandled Error In Deferred.
f.raiseException()
else:
return d.result
else:
return d
def call(*args, **kwargs):
"""The new function."""
# Save and restore the context afterwards so fn() doesn't interfere with other deferreds
current = context.current()
d = InlinedCallbacks(fn(*args, **kwargs))
context.setCurrent(current)
if d.called:
if isinstance(d.result, failure.Failure):
f = d.result
d.addErrback(lambda _: None) # Eat the error so we don't get Unhandled Error In Deferred.
f.raiseException()
else:
return d.result
else:
return d
