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Commit 4b8cedab authored by Stefan Behnel's avatar Stefan Behnel
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solve most of the issues with failing async-gen tests, some asyncio tests are still failing

parent dcf0a543
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Showing with 1265 additions and 56 deletions
Cython/Compiler/ExprNodes.py
View file @ 4b8cedab
......@@ -9484,12 +9484,15 @@ class YieldExprNode(ExprNode):
if type.is_pyobject:
code.putln('%s->%s = 0;' % (Naming.cur_scope_cname, save_cname))
code.put_xgotref(cname)
code.putln(code.error_goto_if_null(Naming.sent_value_cname, self.pos))
self.generate_sent_value_handling_code(code, Naming.sent_value_cname)
if self.result_is_used:
self.allocate_temp_result(code)
code.put('%s = %s; ' % (self.result(), Naming.sent_value_cname))
code.put_incref(self.result(), py_object_type)
def generate_sent_value_handling_code(self, code, value_cname):
code.putln(code.error_goto_if_null(value_cname, self.pos))
class _YieldDelegationExprNode(YieldExprNode):
def yield_from_func(self, code):
......@@ -9582,8 +9585,7 @@ class AwaitIterNextExprNode(AwaitExprNode):
#
# Breaks out of loop on StopAsyncIteration exception.
def fetch_iteration_result(self, code):
assert code.break_label, "AwaitIterNextExprNode outside of 'async for' loop"
def _generate_break(self, code):
code.globalstate.use_utility_code(UtilityCode.load_cached("StopAsyncIteration", "Coroutine.c"))
code.putln("PyObject* exc_type = PyErr_Occurred();")
code.putln("if (exc_type && likely(exc_type == __Pyx_PyExc_StopAsyncIteration ||"
......@@ -9591,8 +9593,20 @@ class AwaitIterNextExprNode(AwaitExprNode):
code.putln("PyErr_Clear();")
code.putln("break;")
code.putln("}")
def fetch_iteration_result(self, code):
assert code.break_label, "AwaitIterNextExprNode outside of 'async for' loop"
self._generate_break(code)
super(AwaitIterNextExprNode, self).fetch_iteration_result(code)
def generate_sent_value_handling_code(self, code, value_cname):
assert code.break_label, "AwaitIterNextExprNode outside of 'async for' loop"
code.putln("if (unlikely(!%s)) {" % value_cname)
self._generate_break(code)
# all non-break exceptions are errors, as in parent class
code.putln(code.error_goto(self.pos))
code.putln("}")
class GlobalsExprNode(AtomicExprNode):
type = dict_type
......
Cython/Compiler/Nodes.py
View file @ 4b8cedab
......@@ -4025,19 +4025,19 @@ class AsyncGenNode(AsyncDefNode):
is_asyncgen = True
class GeneratorBodyDefNode(DefNode):
# Main code body of a generator implemented as a DefNode.
#
is_generator_body = True
is_inlined = False
is_async_gen = False
inlined_comprehension_type = None # container type for inlined comprehensions
def __init__(self, pos=None, name=None, body=None):
def __init__(self, pos=None, name=None, body=None, is_async_gen=False):
super(GeneratorBodyDefNode, self).__init__(
pos=pos, body=body, name=name, doc=None,
args=[], star_arg=None, starstar_arg=None)
pos=pos, body=body, name=name, is_async_gen=is_async_gen,
doc=None, args=[], star_arg=None, starstar_arg=None)
def declare_generator_body(self, env):
prefix = env.next_id(env.scope_prefix)
......@@ -4134,9 +4134,10 @@ class GeneratorBodyDefNode(DefNode):
# on normal generator termination, we do not take the exception propagation
# path: no traceback info is required and not creating it is much faster
if not self.is_inlined and not self.body.is_terminator:
code.putln('PyErr_SetNone(PyExc_StopIteration);')
code.putln('PyErr_SetNone(%s);' % (
'__Pyx_PyExc_StopAsyncIteration' if self.is_async_gen else 'PyExc_StopIteration'))
# ----- Error cleanup
if code.error_label in code.labels_used:
if code.label_used(code.error_label):
if not self.body.is_terminator:
code.put_goto(code.return_label)
code.put_label(code.error_label)
......@@ -4145,8 +4146,7 @@ class GeneratorBodyDefNode(DefNode):
if Future.generator_stop in env.global_scope().context.future_directives:
# PEP 479: turn accidental StopIteration exceptions into a RuntimeError
code.globalstate.use_utility_code(UtilityCode.load_cached("pep479", "Coroutine.c"))
code.putln("if (unlikely(PyErr_ExceptionMatches(PyExc_StopIteration))) "
"__Pyx_Generator_Replace_StopIteration();")
code.putln("__Pyx_Generator_Replace_StopIteration(%d);" % bool(self.is_async_gen))
for cname, type in code.funcstate.all_managed_temps():
code.put_xdecref(cname, type)
code.put_add_traceback(self.entry.qualified_name)
......@@ -5583,10 +5583,12 @@ class ReturnStatNode(StatNode):
# value ExprNode or None
# return_type PyrexType
# in_generator return inside of generator => raise StopIteration
# in_async_gen return inside of async generator
child_attrs = ["value"]
is_terminator = True
in_generator = False
in_async_gen = False
# Whether we are in a parallel section
in_parallel = False
......@@ -5598,6 +5600,8 @@ class ReturnStatNode(StatNode):
error(self.pos, "Return not inside a function body")
return self
if self.value:
if self.in_async_gen:
error(self.pos, "Return with value in async generator")
self.value = self.value.analyse_types(env)
if return_type.is_void or return_type.is_returncode:
error(self.value.pos, "Return with value in void function")
......@@ -5654,6 +5658,8 @@ class ReturnStatNode(StatNode):
else:
if self.return_type.is_pyobject:
if self.in_generator:
if self.in_async_gen:
code.put("PyErr_SetNone(__Pyx_PyExc_StopAsyncIteration); ")
code.putln("%s = NULL;" % Naming.retval_cname)
else:
code.put_init_to_py_none(Naming.retval_cname, self.return_type)
......
Cython/Compiler/ParseTreeTransforms.py
View file @ 4b8cedab
......@@ -2518,7 +2518,7 @@ class MarkClosureVisitor(CythonTransform):
if node.is_async_def:
coroutine_type = Nodes.AsyncGenNode if collector.has_yield else Nodes.AsyncDefNode
if collector.has_yield:
for yield_expr in collector.yields:
for yield_expr in collector.yields + collector.returns:
yield_expr.in_async_gen = True
elif collector.has_await:
found = next(y for y in collector.yields if y.is_await)
......@@ -2535,7 +2535,8 @@ class MarkClosureVisitor(CythonTransform):
retnode.in_generator = True
gbody = Nodes.GeneratorBodyDefNode(
pos=node.pos, name=node.name, body=node.body)
pos=node.pos, name=node.name, body=node.body,
is_async_gen=node.is_async_def and collector.has_yield)
coroutine = coroutine_type(
pos=node.pos, name=node.name, args=node.args,
star_arg=node.star_arg, starstar_arg=node.starstar_arg,
......
Cython/Utility/AsyncGen.c
View file @ 4b8cedab
// This is copied from genobject.c in CPython 3.6.
// Try to keep it in sync.
// Try to keep it in sync by doing this from time to time:
// sed -e 's|__pyx_||ig' Cython/Utility/AsyncGen.c | diff -udw - cpython/Objects/genobject.c | less
//////////////////// AsyncGenerator.proto ////////////////////
//@requires: Coroutine.c::Coroutine
......@@ -12,14 +13,20 @@ typedef struct {
int ag_closed;
} __pyx_PyAsyncGenObject;
typedef struct __pyx_PyAsyncGenASend_struct __pyx_PyAsyncGenASend;
static PyTypeObject *__pyx__PyAsyncGenWrappedValueType = 0;
static PyTypeObject *__pyx__PyAsyncGenASendType = 0;
static PyTypeObject *__pyx__PyAsyncGenAThrowType = 0;
static PyTypeObject *__pyx_AsyncGenType = 0;
#define __Pyx_AsyncGen_CheckExact(obj) (Py_TYPE(obj) == __pyx_AsyncGenType)
#define __pyx_PyAsyncGenASend_CheckExact(o) \
(Py_TYPE(o) == __pyx__PyAsyncGenASendType)
static PyObject *__Pyx_async_gen_anext(PyObject *o);
static PyObject *__Pyx_async_gen_anext(__pyx_PyAsyncGenObject *o);
static PyObject *__Pyx_async_gen_asend_iternext(__pyx_PyAsyncGenASend *o);
static PyObject *__Pyx_async_gen_asend_send(__pyx_PyAsyncGenASend *o, PyObject *arg);
static PyObject *__Pyx__PyAsyncGenValueWrapperNew(PyObject *val);
......@@ -120,7 +127,7 @@ typedef enum {
__PYX_AWAITABLE_STATE_CLOSED, /* closed */
} __pyx_AwaitableState;
typedef struct {
struct __pyx_PyAsyncGenASend_struct {
PyObject_HEAD
__pyx_PyAsyncGenObject *ags_gen;
......@@ -128,7 +135,7 @@ typedef struct {
PyObject *ags_sendval;
__pyx_AwaitableState ags_state;
} __pyx_PyAsyncGenASend;
};
typedef struct {
......@@ -167,9 +174,6 @@ static int __Pyx_ag_asend_freelist_free = 0;
#define __pyx__PyAsyncGenWrappedValue_CheckExact(o) \
(Py_TYPE(o) == __pyx__PyAsyncGenWrappedValueType)
#define __pyx_PyAsyncGenASend_CheckExact(o) \
(Py_TYPE(o) == __pyx__PyAsyncGenASendType)
static int
__Pyx_async_gen_traverse(__pyx_PyAsyncGenObject *gen, visitproc visit, void *arg)
......@@ -303,7 +307,7 @@ static PyMethodDef __Pyx_async_gen_methods[] = {
};
static PyAsyncMethods __Pyx_async_gen_as_async = {
static __Pyx_PyAsyncMethodsStruct __Pyx_async_gen_as_async = {
0, /* am_await */
PyObject_SelfIter, /* am_aiter */
(unaryfunc)__Pyx_async_gen_anext /* am_anext */
......@@ -475,12 +479,12 @@ __Pyx_async_gen_asend_send(__pyx_PyAsyncGenASend *o, PyObject *arg)
if (o->ags_state == __PYX_AWAITABLE_STATE_INIT) {
if (arg == NULL || arg == Py_None) {
arg = o->ags_sendval;
arg = o->ags_sendval ? o->ags_sendval : Py_None;
}
o->ags_state = __PYX_AWAITABLE_STATE_ITER;
}
result = __Pyx_Coroutine_SendEx((__pyx_CoroutineObject*)o->ags_gen, arg);
result = __Pyx_Coroutine_SendEx((__pyx_CoroutineObject*)o->ags_gen, arg, 0);
result = __Pyx_async_gen_unwrap_value(o->ags_gen, result);
if (result == NULL) {
......@@ -494,7 +498,7 @@ __Pyx_async_gen_asend_send(__pyx_PyAsyncGenASend *o, PyObject *arg)
static PyObject *
__Pyx_async_gen_asend_iternext(__pyx_PyAsyncGenASend *o)
{
return __Pyx_async_gen_asend_send(o, NULL);
return __Pyx_async_gen_asend_send(o, Py_None);
}
......@@ -535,7 +539,7 @@ static PyMethodDef __Pyx_async_gen_asend_methods[] = {
};
static PyAsyncMethods __Pyx_async_gen_asend_as_async = {
static __Pyx_PyAsyncMethodsStruct __Pyx_async_gen_asend_as_async = {
PyObject_SelfIter, /* am_await */
0, /* am_aiter */
0 /* am_anext */
......@@ -824,7 +828,7 @@ __Pyx_async_gen_athrow_send(__pyx_PyAsyncGenAThrow *o, PyObject *arg)
assert (o->agt_state == __PYX_AWAITABLE_STATE_ITER);
retval = __Pyx_Coroutine_SendEx((__pyx_CoroutineObject *)gen, arg);
retval = __Pyx_Coroutine_SendEx((__pyx_CoroutineObject *)gen, arg, 0);
if (o->agt_args) {
return __Pyx_async_gen_unwrap_value(o->agt_gen, retval);
} else {
......@@ -921,7 +925,7 @@ static PyMethodDef __Pyx_async_gen_athrow_methods[] = {
};
static PyAsyncMethods __Pyx_async_gen_athrow_as_async = {
static __Pyx_PyAsyncMethodsStruct __Pyx_async_gen_athrow_as_async = {
PyObject_SelfIter, /* am_await */
0, /* am_aiter */
0 /* am_anext */
......
Cython/Utility/Coroutine.c
View file @ 4b8cedab
......@@ -85,6 +85,16 @@ static CYTHON_INLINE PyObject* __Pyx__Coroutine_Yield_From(__pyx_CoroutineObject
gen->yieldfrom = source;
return retval;
}
#ifdef __Pyx_AsyncGen_USED
// inlined "__pyx_PyAsyncGenASend" handling to avoid the series of generic calls below
} else if (__pyx_PyAsyncGenASend_CheckExact(source)) {
retval = __Pyx_async_gen_asend_iternext((__pyx_PyAsyncGenASend *)source);
if (retval) {
Py_INCREF(source);
gen->yieldfrom = source;
return retval;
}
#endif
} else {
PyObject *source_gen = __Pyx__Coroutine_GetAwaitableIter(source);
if (unlikely(!source_gen))
......@@ -292,7 +302,7 @@ static CYTHON_INLINE PyObject *__Pyx_Coroutine_GetAsyncIter(PyObject *obj) {
static CYTHON_INLINE PyObject *__Pyx_Coroutine_AsyncIterNext(PyObject *obj) {
#ifdef __Pyx_AsyncGen_USED
if (__Pyx_AsyncGen_CheckExact(obj)) {
return __Pyx_async_gen_anext(obj);
return __Pyx_async_gen_anext((__pyx_PyAsyncGenObject*) obj);
}
#endif
#if CYTHON_USE_ASYNC_SLOTS
......@@ -320,22 +330,41 @@ static CYTHON_INLINE PyObject *__Pyx_Coroutine_AsyncIterNext(PyObject *obj) {
//////////////////// pep479.proto ////////////////////
static void __Pyx_Generator_Replace_StopIteration(void); /*proto*/
static void __Pyx_Generator_Replace_StopIteration(int in_async_gen); /*proto*/
//////////////////// pep479 ////////////////////
//@requires: Exceptions.c::GetException
static void __Pyx_Generator_Replace_StopIteration(void) {
PyObject *exc, *val, *tb;
// Chain exceptions by moving StopIteration to exc_info before creating the RuntimeError.
// In Py2.x, no chaining happens, but the exception still stays visible in exc_info.
static void __Pyx_Generator_Replace_StopIteration(CYTHON_UNUSED int in_async_gen) {
PyObject *exc, *val, *tb, *cur_exc;
__Pyx_PyThreadState_declare
#ifdef __Pyx_StopAsyncIteration_USED
int is_async_stopiteration = 0;
#endif
cur_exc = PyErr_Occurred();
if (likely(!PyErr_GivenExceptionMatches(cur_exc, PyExc_StopIteration))) {
#ifdef __Pyx_StopAsyncIteration_USED
if (in_async_gen && unlikely(PyErr_GivenExceptionMatches(cur_exc, __Pyx_PyExc_StopAsyncIteration))) {
is_async_stopiteration = 1;
} else
#endif
return;
}
__Pyx_PyThreadState_assign
// Chain exceptions by moving Stop(Async)Iteration to exc_info before creating the RuntimeError.
// In Py2.x, no chaining happens, but the exception still stays visible in exc_info.
__Pyx_GetException(&exc, &val, &tb);
Py_XDECREF(exc);
Py_XDECREF(val);
Py_XDECREF(tb);
PyErr_SetString(PyExc_RuntimeError, "generator raised StopIteration");
PyErr_SetString(PyExc_RuntimeError,
#ifdef __Pyx_StopAsyncIteration_USED
is_async_stopiteration ? "async generator raised StopAsyncIteration" :
in_async_gen ? "async generator raised StopIteration" :
#endif
"generator raised StopIteration");
}
......@@ -567,7 +596,7 @@ int __Pyx_Coroutine_CheckRunning(__pyx_CoroutineObject *gen) {
}
static CYTHON_INLINE
PyObject *__Pyx_Coroutine_SendEx(__pyx_CoroutineObject *self, PyObject *value) {
PyObject *__Pyx_Coroutine_SendEx(__pyx_CoroutineObject *self, PyObject *value, int closing) {
PyObject *retval;
__Pyx_PyThreadState_declare
......@@ -594,12 +623,22 @@ PyObject *__Pyx_Coroutine_SendEx(__pyx_CoroutineObject *self, PyObject *value) {
}
if (unlikely(self->resume_label == -1)) {
#ifdef __Pyx_AsyncGen_USED
if (__Pyx_AsyncGen_CheckExact((PyObject*)self))
PyErr_SetNone(__Pyx_PyExc_StopAsyncIteration);
else
#endif
PyErr_SetNone(PyExc_StopIteration);
if (!closing && __Pyx_Coroutine_CheckExact((PyObject*)self)) {
// `self` is an exhausted coroutine: raise an error,
// except when called from gen_close(), which should
// always be a silent method.
PyErr_SetString(PyExc_RuntimeError, "cannot reuse already awaited coroutine");
}
else if (value) {
// `gen` is an exhausted generator:
// only set exception if called from send().
#ifdef __Pyx_AsyncGen_USED
if (__Pyx_AsyncGen_CheckExact((PyObject*)self))
PyErr_SetNone(__Pyx_PyExc_StopAsyncIteration);
else
#endif
PyErr_SetNone(PyExc_StopIteration);
}
return NULL;
}
......@@ -652,9 +691,14 @@ PyObject *__Pyx_Coroutine_SendEx(__pyx_CoroutineObject *self, PyObject *value) {
}
static CYTHON_INLINE
PyObject *__Pyx_Coroutine_MethodReturn(PyObject *retval) {
PyObject *__Pyx_Coroutine_MethodReturn(PyObject* gen, PyObject *retval) {
if (unlikely(!retval && !PyErr_Occurred())) {
// method call must not terminate with NULL without setting an exception
#ifdef __Pyx_AsyncGen_USED
if (__Pyx_AsyncGen_CheckExact(gen)) {
PyErr_SetNone(__Pyx_PyExc_StopAsyncIteration);
} else
#endif
PyErr_SetNone(PyExc_StopIteration);
}
return retval;
......@@ -667,7 +711,7 @@ PyObject *__Pyx_Coroutine_FinishDelegation(__pyx_CoroutineObject *gen) {
__Pyx_Coroutine_Undelegate(gen);
__Pyx_PyGen_FetchStopIterationValue(&val);
// val == NULL on failure => pass on exception
ret = __Pyx_Coroutine_SendEx(gen, val);
ret = __Pyx_Coroutine_SendEx(gen, val, 0);
Py_XDECREF(val);
return ret;
}
......@@ -693,6 +737,11 @@ static PyObject *__Pyx_Coroutine_Send(PyObject *self, PyObject *value) {
ret = __Pyx_Coroutine_Send(yf, value);
} else
#endif
#ifdef __Pyx_AsyncGen_USED
if (__pyx_PyAsyncGenASend_CheckExact(yf)) {
ret = __Pyx_async_gen_asend_send((__pyx_PyAsyncGenASend *)yf, value);
} else
#endif
{
if (value == Py_None)
ret = Py_TYPE(yf)->tp_iternext(yf);
......@@ -706,9 +755,9 @@ static PyObject *__Pyx_Coroutine_Send(PyObject *self, PyObject *value) {
}
retval = __Pyx_Coroutine_FinishDelegation(gen);
} else {
retval = __Pyx_Coroutine_SendEx(gen, value);
retval = __Pyx_Coroutine_SendEx(gen, value, 0);
}
return __Pyx_Coroutine_MethodReturn(retval);
return __Pyx_Coroutine_MethodReturn(self, retval);
}
// This helper function is used by gen_close and gen_throw to
......@@ -776,7 +825,7 @@ static PyObject *__Pyx_Generator_Next(PyObject *self) {
}
return __Pyx_Coroutine_FinishDelegation(gen);
}
return __Pyx_Coroutine_SendEx(gen, Py_None);
return __Pyx_Coroutine_SendEx(gen, Py_None, 0);
}
static PyObject *__Pyx_Coroutine_Close(PyObject *self) {
......@@ -796,7 +845,7 @@ static PyObject *__Pyx_Coroutine_Close(PyObject *self) {
}
if (err == 0)
PyErr_SetNone(PyExc_GeneratorExit);
retval = __Pyx_Coroutine_SendEx(gen, NULL);
retval = __Pyx_Coroutine_SendEx(gen, NULL, 1);
if (retval) {
const char *msg;
Py_DECREF(retval);
......@@ -841,12 +890,15 @@ static PyObject *__Pyx__Coroutine_Throw(PyObject *self, PyObject *typ, PyObject
if (yf) {
PyObject *ret;
Py_INCREF(yf);
if (PyErr_GivenExceptionMatches(typ, PyExc_GeneratorExit)) {
if (PyErr_GivenExceptionMatches(typ, PyExc_GeneratorExit) && close_on_genexit) {
// Asynchronous generators *should not* be closed right away.
// We have to allow some awaits to work it through, hence the
// `close_on_genexit` parameter here.
int err = __Pyx_Coroutine_CloseIter(gen, yf);
Py_DECREF(yf);
__Pyx_Coroutine_Undelegate(gen);
if (err < 0)
return __Pyx_Coroutine_MethodReturn(__Pyx_Coroutine_SendEx(gen, NULL));
return __Pyx_Coroutine_MethodReturn(self, __Pyx_Coroutine_SendEx(gen, NULL, 0));
goto throw_here;
}
gen->is_running = 1;
......@@ -888,11 +940,11 @@ static PyObject *__Pyx__Coroutine_Throw(PyObject *self, PyObject *typ, PyObject
if (!ret) {
ret = __Pyx_Coroutine_FinishDelegation(gen);
}
return __Pyx_Coroutine_MethodReturn(ret);
return __Pyx_Coroutine_MethodReturn(self, ret);
}
throw_here:
__Pyx_Raise(typ, val, tb, NULL);
return __Pyx_Coroutine_MethodReturn(__Pyx_Coroutine_SendEx(gen, NULL));
return __Pyx_Coroutine_MethodReturn(self, __Pyx_Coroutine_SendEx(gen, NULL, 0));
}
static PyObject *__Pyx_Coroutine_Throw(PyObject *self, PyObject *args) {
......@@ -958,6 +1010,14 @@ static void __Pyx_Coroutine_dealloc(PyObject *self) {
PyObject_GC_UnTrack(self);
}
#ifdef __Pyx_AsyncGen_USED
if (__Pyx_AsyncGen_CheckExact(self)) {
/* We have to handle this case for asynchronous generators
right here, because this code has to be between UNTRACK
and GC_Del. */
Py_CLEAR(((__pyx_PyAsyncGenObject*)self)->ag_finalizer);
}
#endif
__Pyx_Coroutine_clear(self);
PyObject_GC_Del(gen);
}
......@@ -977,8 +1037,31 @@ static void __Pyx_Coroutine_del(PyObject *self) {
self->ob_refcnt = 1;
#endif
// Save the current exception, if any.
__Pyx_PyThreadState_assign
#ifdef __Pyx_AsyncGen_USED
if (__Pyx_AsyncGen_CheckExact(self)) {
__pyx_PyAsyncGenObject *agen = (__pyx_PyAsyncGenObject*)self;
PyObject *finalizer = agen->ag_finalizer;
if (finalizer && !agen->ag_closed) {
/* Save the current exception, if any. */
__Pyx_ErrFetch(&error_type, &error_value, &error_traceback);
res = __Pyx_PyObject_CallOneArg(finalizer, self);
if (res == NULL) {
PyErr_WriteUnraisable(self);
} else {
Py_DECREF(res);
}
/* Restore the saved exception. */
__Pyx_ErrRestore(error_type, error_value, error_traceback);
return;
}
}
#endif
// Save the current exception, if any.
__Pyx_ErrFetch(&error_type, &error_value, &error_traceback);
res = __Pyx_Coroutine_Close(self);
......
Cython/Utility/ModuleSetupCode.c
View file @ 4b8cedab
......@@ -387,15 +387,17 @@
#define __Pyx_PyAsyncMethodsStruct PyAsyncMethods
#define __Pyx_PyType_AsAsync(obj) (Py_TYPE(obj)->tp_as_async)
#else
#define __Pyx_PyType_AsAsync(obj) ((__Pyx_PyAsyncMethodsStruct*) (Py_TYPE(obj)->tp_reserved))
#endif
#else
#define __Pyx_PyType_AsAsync(obj) NULL
#endif
#ifndef __Pyx_PyAsyncMethodsStruct
typedef struct {
unaryfunc am_await;
unaryfunc am_aiter;
unaryfunc am_anext;
} __Pyx_PyAsyncMethodsStruct;
#define __Pyx_PyType_AsAsync(obj) ((__Pyx_PyAsyncMethodsStruct*) (Py_TYPE(obj)->tp_reserved))
#endif
#else
#define __Pyx_PyType_AsAsync(obj) NULL
#endif
// restrict
......
tests/run/test_asyncgen.py 0 → 100644
View file @ 4b8cedab
# cython: language_level=3, binding=True
# mode: run
# tag: pep525, asyncfor, await
from __future__ import generator_stop
import os
import sys
import inspect
import types
import unittest
import contextlib
#from unittest import mock
#from test.support import import_module
#asyncio = import_module("asyncio")
try:
import asyncio
except ImportError:
try:
from unittest import skip
except ImportError:
def requires_asyncio(c):
return None
else:
requires_asyncio = skip("tests require asyncio")
asyncio = None
else:
def requires_asyncio(c):
return c
# compiled exec()
def exec(code_string, l, g):
from Cython.Compiler.Errors import CompileError
from Cython.Shadow import inline
try:
from StringIO import StringIO
except ImportError:
from io import StringIO
old_stderr = sys.stderr
try:
sys.stderr = StringIO()
ns = inline(code_string, locals=l, globals=g, lib_dir=os.path.dirname(__file__))
except CompileError as exc:
raise SyntaxError(str(exc))
finally:
sys.stderr = old_stderr
g.update(ns)
class AwaitException(Exception):
pass
@types.coroutine
def awaitable(*, throw=False):
if throw:
yield ('throw',)
else:
yield ('result',)
def run_until_complete(coro):
exc = False
while True:
try:
if exc:
exc = False
fut = coro.throw(AwaitException)
else:
fut = coro.send(None)
except StopIteration as ex:
return ex.args[0]
if fut == ('throw',):
exc = True
def to_list(gen):
async def iterate():
res = []
async for i in gen:
res.append(i)
return res
return run_until_complete(iterate())
class AsyncGenSyntaxTest(unittest.TestCase):
@contextlib.contextmanager
def assertRaisesRegex(self, exc_type, regex):
# the error messages usually don't match, so we just ignore them
try:
yield
except exc_type:
self.assertTrue(True)
else:
self.assertTrue(False)
def test_async_gen_syntax_01(self):
code = '''async def foo():
await abc
yield from 123
'''
with self.assertRaisesRegex(SyntaxError, 'yield from.*inside async'):
exec(code, {}, {})
def test_async_gen_syntax_02(self):
code = '''async def foo():
yield from 123
'''
with self.assertRaisesRegex(SyntaxError, 'yield from.*inside async'):
exec(code, {}, {})
def test_async_gen_syntax_03(self):
code = '''async def foo():
await abc
yield
return 123
'''
with self.assertRaisesRegex(SyntaxError, 'return.*value.*async gen'):
exec(code, {}, {})
def test_async_gen_syntax_04(self):
code = '''async def foo():
yield
return 123
'''
with self.assertRaisesRegex(SyntaxError, 'return.*value.*async gen'):
exec(code, {}, {})
def test_async_gen_syntax_05(self):
code = '''async def foo():
if 0:
yield
return 12
'''
with self.assertRaisesRegex(SyntaxError, 'return.*value.*async gen'):
exec(code, {}, {})
class AsyncGenTest(unittest.TestCase):
def compare_generators(self, sync_gen, async_gen):
def sync_iterate(g):
res = []
while True:
try:
res.append(g.__next__())
except StopIteration:
res.append('STOP')
break
except Exception as ex:
res.append(str(type(ex)))
return res
def async_iterate(g):
res = []
while True:
try:
g.__anext__().__next__()
except StopAsyncIteration:
res.append('STOP')
break
except StopIteration as ex:
if ex.args:
res.append(ex.args[0])
else:
res.append('EMPTY StopIteration')
break
except Exception as ex:
res.append(str(type(ex)))
return res
sync_gen_result = sync_iterate(sync_gen)
async_gen_result = async_iterate(async_gen)
self.assertEqual(sync_gen_result, async_gen_result)
return async_gen_result
def test_async_gen_iteration_01(self):
async def gen():
await awaitable()
a = yield 123
self.assertIs(a, None)
await awaitable()
yield 456
await awaitable()
yield 789
self.assertEqual(to_list(gen()), [123, 456, 789])
def test_async_gen_iteration_02(self):
async def gen():
await awaitable()
yield 123
await awaitable()
g = gen()
ai = g.__aiter__()
self.assertEqual(ai.__anext__().__next__(), ('result',))
try:
ai.__anext__().__next__()
except StopIteration as ex:
self.assertEqual(ex.args[0], 123)
else:
self.fail('StopIteration was not raised')
self.assertEqual(ai.__anext__().__next__(), ('result',))
try:
ai.__anext__().__next__()
except StopAsyncIteration as ex:
self.assertFalse(ex.args)
else:
self.fail('StopAsyncIteration was not raised')
def test_async_gen_exception_03(self):
async def gen():
await awaitable()
yield 123
await awaitable(throw=True)
yield 456
with self.assertRaises(AwaitException):
to_list(gen())
def test_async_gen_exception_04(self):
async def gen():
await awaitable()
yield 123
1 / 0
g = gen()
ai = g.__aiter__()
self.assertEqual(ai.__anext__().__next__(), ('result',))
try:
ai.__anext__().__next__()
except StopIteration as ex:
self.assertEqual(ex.args[0], 123)
else:
self.fail('StopIteration was not raised')
with self.assertRaises(ZeroDivisionError):
ai.__anext__().__next__()
def test_async_gen_exception_05(self):
async def gen():
yield 123
raise StopAsyncIteration
with self.assertRaisesRegex(RuntimeError,
'async generator.*StopAsyncIteration'):
to_list(gen())
def test_async_gen_exception_06(self):
async def gen():
yield 123
raise StopIteration
with self.assertRaisesRegex(RuntimeError,
'async generator.*StopIteration'):
to_list(gen())
def test_async_gen_exception_07(self):
def sync_gen():
try:
yield 1
1 / 0
finally:
yield 2
yield 3
yield 100
async def async_gen():
try:
yield 1
1 / 0
finally:
yield 2
yield 3
yield 100
self.compare_generators(sync_gen(), async_gen())
def test_async_gen_exception_08(self):
def sync_gen():
try:
yield 1
finally:
yield 2
1 / 0
yield 3
yield 100
async def async_gen():
try:
yield 1
await awaitable()
finally:
await awaitable()
yield 2
1 / 0
yield 3
yield 100
self.compare_generators(sync_gen(), async_gen())
def test_async_gen_exception_09(self):
def sync_gen():
try:
yield 1
1 / 0
finally:
yield 2
yield 3
yield 100
async def async_gen():
try:
await awaitable()
yield 1
1 / 0
finally:
yield 2
await awaitable()
yield 3
yield 100
self.compare_generators(sync_gen(), async_gen())
def test_async_gen_exception_10(self):
async def gen():
yield 123
with self.assertRaisesRegex(TypeError,
"non-None value .* async generator"):
gen().__anext__().send(100)
def test_async_gen_api_01(self):
async def gen():
yield 123
g = gen()
self.assertEqual(g.__name__, 'gen')
g.__name__ = '123'
self.assertEqual(g.__name__, '123')
self.assertIn('.gen', g.__qualname__)
g.__qualname__ = '123'
self.assertEqual(g.__qualname__, '123')
#self.assertIsNone(g.ag_await)
#self.assertIsInstance(g.ag_frame, types.FrameType)
self.assertFalse(g.ag_running)
#self.assertIsInstance(g.ag_code, types.CodeType)
self.assertTrue(inspect.isawaitable(g.aclose()))
@requires_asyncio
class AsyncGenAsyncioTest(unittest.TestCase):
def setUp(self):
self.loop = asyncio.new_event_loop()
asyncio.set_event_loop(None)
def tearDown(self):
self.loop.close()
self.loop = None
async def to_list(self, gen):
res = []
async for i in gen:
res.append(i)
return res
def test_async_gen_asyncio_01(self):
async def gen():
yield 1
await asyncio.sleep(0.01, loop=self.loop)
yield 2
await asyncio.sleep(0.01, loop=self.loop)
return
yield 3
res = self.loop.run_until_complete(self.to_list(gen()))
self.assertEqual(res, [1, 2])
def test_async_gen_asyncio_02(self):
async def gen():
yield 1
await asyncio.sleep(0.01, loop=self.loop)
yield 2
1 / 0
yield 3
with self.assertRaises(ZeroDivisionError):
self.loop.run_until_complete(self.to_list(gen()))
def test_async_gen_asyncio_03(self):
loop = self.loop
class Gen:
async def __aiter__(self):
yield 1
await asyncio.sleep(0.01, loop=loop)
yield 2
res = loop.run_until_complete(self.to_list(Gen()))
self.assertEqual(res, [1, 2])
def test_async_gen_asyncio_anext_04(self):
async def foo():
yield 1
await asyncio.sleep(0.01, loop=self.loop)
try:
yield 2
yield 3
except ZeroDivisionError:
yield 1000
await asyncio.sleep(0.01, loop=self.loop)
yield 4
async def run1():
it = foo().__aiter__()
self.assertEqual(await it.__anext__(), 1)
self.assertEqual(await it.__anext__(), 2)
self.assertEqual(await it.__anext__(), 3)
self.assertEqual(await it.__anext__(), 4)
with self.assertRaises(StopAsyncIteration):
await it.__anext__()
with self.assertRaises(StopAsyncIteration):
await it.__anext__()
async def run2():
it = foo().__aiter__()
self.assertEqual(await it.__anext__(), 1)
self.assertEqual(await it.__anext__(), 2)
try:
it.__anext__().throw(ZeroDivisionError)
except StopIteration as ex:
self.assertEqual(ex.args[0], 1000)
else:
self.fail('StopIteration was not raised')
self.assertEqual(await it.__anext__(), 4)
with self.assertRaises(StopAsyncIteration):
await it.__anext__()
self.loop.run_until_complete(run1())
self.loop.run_until_complete(run2())
def test_async_gen_asyncio_anext_05(self):
async def foo():
v = yield 1
v = yield v
yield v * 100
async def run():
it = foo().__aiter__()
try:
it.__anext__().send(None)
except StopIteration as ex:
self.assertEqual(ex.args[0], 1)
else:
self.fail('StopIteration was not raised')
try:
it.__anext__().send(10)
except StopIteration as ex:
self.assertEqual(ex.args[0], 10)
else:
self.fail('StopIteration was not raised')
try:
it.__anext__().send(12)
except StopIteration as ex:
self.assertEqual(ex.args[0], 1200)
else:
self.fail('StopIteration was not raised')
with self.assertRaises(StopAsyncIteration):
await it.__anext__()
self.loop.run_until_complete(run())
def test_async_gen_asyncio_anext_06(self):
DONE = 0
# test synchronous generators
def foo():
try:
yield
except:
pass
g = foo()
g.send(None)
with self.assertRaises(StopIteration):
g.send(None)
# now with asynchronous generators
async def gen():
nonlocal DONE
try:
yield
except:
pass
DONE = 1
async def run():
nonlocal DONE
g = gen()
await g.asend(None)
with self.assertRaises(StopAsyncIteration):
await g.asend(None)
DONE += 10
self.loop.run_until_complete(run())
self.assertEqual(DONE, 11)
def test_async_gen_asyncio_anext_tuple(self):
async def foo():
try:
yield (1,)
except ZeroDivisionError:
yield (2,)
async def run():
it = foo().__aiter__()
self.assertEqual(await it.__anext__(), (1,))
with self.assertRaises(StopIteration) as cm:
it.__anext__().throw(ZeroDivisionError)
self.assertEqual(cm.exception.args[0], (2,))
with self.assertRaises(StopAsyncIteration):
await it.__anext__()
self.loop.run_until_complete(run())
def test_async_gen_asyncio_anext_stopiteration(self):
async def foo():
try:
yield StopIteration(1)
except ZeroDivisionError:
yield StopIteration(3)
async def run():
it = foo().__aiter__()
v = await it.__anext__()
self.assertIsInstance(v, StopIteration)
self.assertEqual(v.value, 1)
with self.assertRaises(StopIteration) as cm:
it.__anext__().throw(ZeroDivisionError)
v = cm.exception.args[0]
self.assertIsInstance(v, StopIteration)
self.assertEqual(v.value, 3)
with self.assertRaises(StopAsyncIteration):
await it.__anext__()
self.loop.run_until_complete(run())
def test_async_gen_asyncio_aclose_06(self):
async def foo():
try:
yield 1
1 / 0
finally:
await asyncio.sleep(0.01, loop=self.loop)
yield 12
async def run():
gen = foo()
it = gen.__aiter__()
await it.__anext__()
await gen.aclose()
with self.assertRaisesRegex(
RuntimeError,
"async generator ignored GeneratorExit"):
self.loop.run_until_complete(run())
def test_async_gen_asyncio_aclose_07(self):
DONE = 0
async def foo():
nonlocal DONE
try:
yield 1
1 / 0
finally:
await asyncio.sleep(0.01, loop=self.loop)
await asyncio.sleep(0.01, loop=self.loop)
DONE += 1
DONE += 1000
async def run():
gen = foo()
it = gen.__aiter__()
await it.__anext__()
await gen.aclose()
self.loop.run_until_complete(run())
self.assertEqual(DONE, 1)
def test_async_gen_asyncio_aclose_08(self):
DONE = 0
fut = asyncio.Future(loop=self.loop)
async def foo():
nonlocal DONE
try:
yield 1
await fut
DONE += 1000
yield 2
finally:
await asyncio.sleep(0.01, loop=self.loop)
await asyncio.sleep(0.01, loop=self.loop)
DONE += 1
DONE += 1000
async def run():
gen = foo()
it = gen.__aiter__()
self.assertEqual(await it.__anext__(), 1)
t = self.loop.create_task(it.__anext__())
await asyncio.sleep(0.01, loop=self.loop)
await gen.aclose()
return t
t = self.loop.run_until_complete(run())
self.assertEqual(DONE, 1)
# Silence ResourceWarnings
fut.cancel()
t.cancel()
self.loop.run_until_complete(asyncio.sleep(0.01, loop=self.loop))
def test_async_gen_asyncio_gc_aclose_09(self):
DONE = 0
async def gen():
nonlocal DONE
try:
while True:
yield 1
finally:
await asyncio.sleep(0.01, loop=self.loop)
await asyncio.sleep(0.01, loop=self.loop)
DONE = 1
async def run():
g = gen()
await g.__anext__()
await g.__anext__()
del g
await asyncio.sleep(0.1, loop=self.loop)
self.loop.run_until_complete(run())
self.assertEqual(DONE, 1)
def test_async_gen_asyncio_aclose_10(self):
DONE = 0
# test synchronous generators
def foo():
try:
yield
except:
pass
g = foo()
g.send(None)
g.close()
# now with asynchronous generators
async def gen():
nonlocal DONE
try:
yield
except:
pass
DONE = 1
async def run():
nonlocal DONE
g = gen()
await g.asend(None)
await g.aclose()
DONE += 10
self.loop.run_until_complete(run())
self.assertEqual(DONE, 11)
def test_async_gen_asyncio_aclose_11(self):
DONE = 0
# test synchronous generators
def foo():
try:
yield
except:
pass
yield
g = foo()
g.send(None)
with self.assertRaisesRegex(RuntimeError, 'ignored GeneratorExit'):
g.close()
# now with asynchronous generators
async def gen():
nonlocal DONE
try:
yield
except:
pass
yield
DONE += 1
async def run():
nonlocal DONE
g = gen()
await g.asend(None)
with self.assertRaisesRegex(RuntimeError, 'ignored GeneratorExit'):
await g.aclose()
DONE += 10
self.loop.run_until_complete(run())
self.assertEqual(DONE, 10)
def test_async_gen_asyncio_asend_01(self):
DONE = 0
# Sanity check:
def sgen():
v = yield 1
yield v * 2
sg = sgen()
v = sg.send(None)
self.assertEqual(v, 1)
v = sg.send(100)
self.assertEqual(v, 200)
async def gen():
nonlocal DONE
try:
await asyncio.sleep(0.01, loop=self.loop)
v = yield 1
await asyncio.sleep(0.01, loop=self.loop)
yield v * 2
await asyncio.sleep(0.01, loop=self.loop)
return
finally:
await asyncio.sleep(0.01, loop=self.loop)
await asyncio.sleep(0.01, loop=self.loop)
DONE = 1
async def run():
g = gen()
v = await g.asend(None)
self.assertEqual(v, 1)
v = await g.asend(100)
self.assertEqual(v, 200)
with self.assertRaises(StopAsyncIteration):
await g.asend(None)
self.loop.run_until_complete(run())
self.assertEqual(DONE, 1)
def test_async_gen_asyncio_asend_02(self):
DONE = 0
async def sleep_n_crash(delay):
await asyncio.sleep(delay, loop=self.loop)
1 / 0
async def gen():
nonlocal DONE
try:
await asyncio.sleep(0.01, loop=self.loop)
v = yield 1
await sleep_n_crash(0.01)
DONE += 1000
yield v * 2
finally:
await asyncio.sleep(0.01, loop=self.loop)
await asyncio.sleep(0.01, loop=self.loop)
DONE = 1
async def run():
g = gen()
v = await g.asend(None)
self.assertEqual(v, 1)
await g.asend(100)
with self.assertRaises(ZeroDivisionError):
self.loop.run_until_complete(run())
self.assertEqual(DONE, 1)
def test_async_gen_asyncio_asend_03(self):
DONE = 0
async def sleep_n_crash(delay):
fut = asyncio.ensure_future(asyncio.sleep(delay, loop=self.loop),
loop=self.loop)
self.loop.call_later(delay / 2, lambda: fut.cancel())
return await fut
async def gen():
nonlocal DONE
try:
await asyncio.sleep(0.01, loop=self.loop)
v = yield 1
await sleep_n_crash(0.01)
DONE += 1000
yield v * 2
finally:
await asyncio.sleep(0.01, loop=self.loop)
await asyncio.sleep(0.01, loop=self.loop)
DONE = 1
async def run():
g = gen()
v = await g.asend(None)
self.assertEqual(v, 1)
await g.asend(100)
with self.assertRaises(asyncio.CancelledError):
self.loop.run_until_complete(run())
self.assertEqual(DONE, 1)
def test_async_gen_asyncio_athrow_01(self):
DONE = 0
class FooEr(Exception):
pass
# Sanity check:
def sgen():
try:
v = yield 1
except FooEr:
v = 1000
yield v * 2
sg = sgen()
v = sg.send(None)
self.assertEqual(v, 1)
v = sg.throw(FooEr)
self.assertEqual(v, 2000)
with self.assertRaises(StopIteration):
sg.send(None)
async def gen():
nonlocal DONE
try:
await asyncio.sleep(0.01, loop=self.loop)
try:
v = yield 1
except FooEr:
v = 1000
await asyncio.sleep(0.01, loop=self.loop)
yield v * 2
await asyncio.sleep(0.01, loop=self.loop)
# return
finally:
await asyncio.sleep(0.01, loop=self.loop)
await asyncio.sleep(0.01, loop=self.loop)
DONE = 1
async def run():
g = gen()
v = await g.asend(None)
self.assertEqual(v, 1)
v = await g.athrow(FooEr)
self.assertEqual(v, 2000)
with self.assertRaises(StopAsyncIteration):
await g.asend(None)
self.loop.run_until_complete(run())
self.assertEqual(DONE, 1)
def test_async_gen_asyncio_athrow_02(self):
DONE = 0
class FooEr(Exception):
pass
async def sleep_n_crash(delay):
fut = asyncio.ensure_future(asyncio.sleep(delay, loop=self.loop),
loop=self.loop)
self.loop.call_later(delay / 2, lambda: fut.cancel())
return await fut
async def gen():
nonlocal DONE
try:
await asyncio.sleep(0.01, loop=self.loop)
try:
v = yield 1
except FooEr:
await sleep_n_crash(0.01)
yield v * 2
await asyncio.sleep(0.01, loop=self.loop)
# return
finally:
await asyncio.sleep(0.01, loop=self.loop)
await asyncio.sleep(0.01, loop=self.loop)
DONE = 1
async def run():
g = gen()
v = await g.asend(None)
self.assertEqual(v, 1)
try:
await g.athrow(FooEr)
except asyncio.CancelledError:
self.assertEqual(DONE, 1)
raise
else:
self.fail('CancelledError was not raised')
with self.assertRaises(asyncio.CancelledError):
self.loop.run_until_complete(run())
self.assertEqual(DONE, 1)
def test_async_gen_asyncio_athrow_03(self):
DONE = 0
# test synchronous generators
def foo():
try:
yield
except:
pass
g = foo()
g.send(None)
with self.assertRaises(StopIteration):
g.throw(ValueError)
# now with asynchronous generators
async def gen():
nonlocal DONE
try:
yield
except:
pass
DONE = 1
async def run():
nonlocal DONE
g = gen()
await g.asend(None)
with self.assertRaises(StopAsyncIteration):
await g.athrow(ValueError)
DONE += 10
self.loop.run_until_complete(run())
self.assertEqual(DONE, 11)
def test_async_gen_asyncio_athrow_tuple(self):
async def gen():
try:
yield 1
except ZeroDivisionError:
yield (2,)
async def run():
g = gen()
v = await g.asend(None)
self.assertEqual(v, 1)
v = await g.athrow(ZeroDivisionError)
self.assertEqual(v, (2,))
with self.assertRaises(StopAsyncIteration):
await g.asend(None)
self.loop.run_until_complete(run())
def test_async_gen_asyncio_athrow_stopiteration(self):
async def gen():
try:
yield 1
except ZeroDivisionError:
yield StopIteration(2)
async def run():
g = gen()
v = await g.asend(None)
self.assertEqual(v, 1)
v = await g.athrow(ZeroDivisionError)
self.assertIsInstance(v, StopIteration)
self.assertEqual(v.value, 2)
with self.assertRaises(StopAsyncIteration):
await g.asend(None)
self.loop.run_until_complete(run())
def test_async_gen_asyncio_shutdown_01(self):
finalized = 0
async def waiter(timeout):
nonlocal finalized
try:
await asyncio.sleep(timeout, loop=self.loop)
yield 1
finally:
await asyncio.sleep(0, loop=self.loop)
finalized += 1
async def wait():
async for _ in waiter(1):
pass
t1 = self.loop.create_task(wait())
t2 = self.loop.create_task(wait())
self.loop.run_until_complete(asyncio.sleep(0.1, loop=self.loop))
self.loop.run_until_complete(self.loop.shutdown_asyncgens())
self.assertEqual(finalized, 2)
# Silence warnings
t1.cancel()
t2.cancel()
self.loop.run_until_complete(asyncio.sleep(0.1, loop=self.loop))
def test_async_gen_asyncio_shutdown_02(self):
logged = 0
def logger(loop, context):
nonlocal logged
self.assertIn('asyncgen', context)
expected = 'an error occurred during closing of asynchronous'
if expected in context['message']:
logged += 1
async def waiter(timeout):
try:
await asyncio.sleep(timeout, loop=self.loop)
yield 1
finally:
1 / 0
async def wait():
async for _ in waiter(1):
pass
t = self.loop.create_task(wait())
self.loop.run_until_complete(asyncio.sleep(0.1, loop=self.loop))
self.loop.set_exception_handler(logger)
self.loop.run_until_complete(self.loop.shutdown_asyncgens())
self.assertEqual(logged, 1)
# Silence warnings
t.cancel()
self.loop.run_until_complete(asyncio.sleep(0.1, loop=self.loop))
if __name__ == "__main__":
unittest.main()
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