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Implement CreateAsyncFromSyncIterator (#4802)

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JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik robert.fancsik@h-lab.eu
This commit is contained in:
Robert Fancsik
2021-10-28 12:45:47 +02:00
committed by GitHub
parent dd77ec914a
commit d2388e907f
24 changed files with 1015 additions and 418 deletions
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jerry-core/ecma/operations/ecma-promise-object.c
+140 -99
View File
@@ -607,7 +607,7 @@ ecma_promise_all_or_all_settled_handler_cb (ecma_object_t *function_obj_p, /**<
ecma_promise_all_executor_t *executor_p = (ecma_promise_all_executor_t *) function_obj_p;
uint8_t promise_type = executor_p->header.u.built_in.u2.routine_flags;
promise_type = (uint8_t) (promise_type >> ECMA_NATIVE_HANDLER_FLAGS_PROMISE_HELPER_SHIFT);
promise_type = (uint8_t) (promise_type >> ECMA_NATIVE_HANDLER_COMMON_FLAGS_SHIFT);
/* 1 - 2. */
if (executor_p->index == 0)
@@ -894,103 +894,6 @@ ecma_promise_reject_or_resolve (ecma_value_t this_arg, /**< "this" argument */
return promise;
} /* ecma_promise_reject_or_resolve */
/**
* It performs the "then" operation on promiFulfilled
* and onRejected as its settlement actions.
*
* See also: 25.4.5.3.1
*
* @return ecma value of the new promise object
* Returned value must be freed with ecma_free_value
*/
static ecma_value_t
ecma_promise_do_then (ecma_value_t promise, /**< the promise which call 'then' */
ecma_value_t on_fulfilled, /**< on_fulfilled function */
ecma_value_t on_rejected, /**< on_rejected function */
ecma_object_t *result_capability_obj_p) /**< promise capability */
{
JERRY_ASSERT (ecma_object_class_is (result_capability_obj_p, ECMA_OBJECT_CLASS_PROMISE_CAPABILITY));
ecma_promise_capabality_t *capability_p = (ecma_promise_capabality_t *) result_capability_obj_p;
/* 3. boolean true indicates "indentity" */
if (!ecma_op_is_callable (on_fulfilled))
{
on_fulfilled = ECMA_VALUE_TRUE;
}
/* 4. boolean false indicates "thrower" */
if (!ecma_op_is_callable (on_rejected))
{
on_rejected = ECMA_VALUE_FALSE;
}
ecma_object_t *promise_obj_p = ecma_get_object_from_value (promise);
ecma_promise_object_t *promise_p = (ecma_promise_object_t *) promise_obj_p;
uint16_t flags = ecma_promise_get_flags (promise_obj_p);
if (flags & ECMA_PROMISE_IS_PENDING)
{
/* 7. */
/* [ capability, (on_fulfilled), (on_rejected) ] */
ecma_value_t reaction_values[3];
ecma_value_t *reactions_p = reaction_values + 1;
uint8_t tag = 0;
if (on_fulfilled != ECMA_VALUE_TRUE)
{
tag |= JMEM_FIRST_TAG_BIT_MASK;
*reactions_p++ = on_fulfilled;
}
if (on_rejected != ECMA_VALUE_FALSE)
{
tag |= JMEM_SECOND_TAG_BIT_MASK;
*reactions_p++ = on_rejected;
}
ECMA_SET_NON_NULL_POINTER_TAG (reaction_values[0], result_capability_obj_p, tag);
uint32_t value_count = (uint32_t) (reactions_p - reaction_values);
ecma_collection_append (promise_p->reactions, reaction_values, value_count);
}
else if (flags & ECMA_PROMISE_IS_FULFILLED)
{
/* 8. */
ecma_value_t value = ecma_promise_get_result (promise_obj_p);
ecma_enqueue_promise_reaction_job (ecma_make_object_value (result_capability_obj_p), on_fulfilled, value);
ecma_free_value (value);
}
else
{
/* 9. */
ecma_value_t reason = ecma_promise_get_result (promise_obj_p);
ecma_enqueue_promise_reaction_job (ecma_make_object_value (result_capability_obj_p), on_rejected, reason);
ecma_free_value (reason);
#if JERRY_PROMISE_CALLBACK
if (ecma_promise_get_flags (promise_obj_p) & ECMA_PROMISE_UNHANDLED_REJECT)
{
promise_p->header.u.cls.u1.promise_flags &= (uint8_t) ~ECMA_PROMISE_UNHANDLED_REJECT;
if (JERRY_UNLIKELY (JERRY_CONTEXT (promise_callback_filters) & JERRY_PROMISE_EVENT_FILTER_ERROR))
{
JERRY_ASSERT (JERRY_CONTEXT (promise_callback) != NULL);
JERRY_CONTEXT (promise_callback) (JERRY_PROMISE_EVENT_CATCH_HANDLER_ADDED,
promise,
ECMA_VALUE_UNDEFINED,
JERRY_CONTEXT (promise_callback_user_p));
}
}
#endif /* JERRY_PROMISE_CALLBACK */
}
/* 10. */
return ecma_copy_value (capability_p->header.u.cls.u3.promise);
} /* ecma_promise_do_then */
/**
* The common function for ecma_builtin_promise_prototype_then
* and ecma_builtin_promise_prototype_catch.
@@ -1029,7 +932,7 @@ ecma_promise_then (ecma_value_t promise, /**< the promise which call 'then' */
return ECMA_VALUE_ERROR;
}
ecma_value_t ret = ecma_promise_do_then (promise, on_fulfilled, on_rejected, result_capability_obj_p);
ecma_value_t ret = ecma_promise_perform_then (promise, on_fulfilled, on_rejected, result_capability_obj_p);
ecma_deref_object (result_capability_obj_p);
return ret;
@@ -1326,6 +1229,144 @@ ecma_promise_async_await (ecma_extended_object_t *async_generator_object_p, /**<
return ECMA_VALUE_UNDEFINED;
} /* ecma_promise_async_await */
/**
* Reject the promise if the value is error.
*
* See also:
* ES2015 25.4.1.1.1
*
* @return ecma value of the new promise.
* Returned value must be freed with ecma_free_value.
*/
ecma_value_t
ecma_op_if_abrupt_reject_promise (ecma_value_t *value_p, /**< [in - out] completion value */
ecma_object_t *capability_obj_p) /**< capability */
{
JERRY_ASSERT (ecma_object_class_is (capability_obj_p, ECMA_OBJECT_CLASS_PROMISE_CAPABILITY));
if (!ECMA_IS_VALUE_ERROR (*value_p))
{
return ECMA_VALUE_EMPTY;
}
ecma_value_t reason = jcontext_take_exception ();
ecma_promise_capabality_t *capability_p = (ecma_promise_capabality_t *) capability_obj_p;
ecma_value_t call_ret = ecma_op_function_call (ecma_get_object_from_value (capability_p->reject),
ECMA_VALUE_UNDEFINED,
&reason,
1);
ecma_free_value (reason);
if (ECMA_IS_VALUE_ERROR (call_ret))
{
*value_p = call_ret;
return call_ret;
}
ecma_free_value (call_ret);
*value_p = ecma_copy_value (capability_p->header.u.cls.u3.promise);
return ECMA_VALUE_EMPTY;
} /* ecma_op_if_abrupt_reject_promise */
/**
* It performs the "then" operation on promiFulfilled
* and onRejected as its settlement actions.
*
* See also: 25.4.5.3.1
*
* @return ecma value of the new promise object
* Returned value must be freed with ecma_free_value
*/
ecma_value_t
ecma_promise_perform_then (ecma_value_t promise, /**< the promise which call 'then' */
ecma_value_t on_fulfilled, /**< on_fulfilled function */
ecma_value_t on_rejected, /**< on_rejected function */
ecma_object_t *result_capability_obj_p) /**< promise capability */
{
JERRY_ASSERT (ecma_object_class_is (result_capability_obj_p, ECMA_OBJECT_CLASS_PROMISE_CAPABILITY));
ecma_promise_capabality_t *capability_p = (ecma_promise_capabality_t *) result_capability_obj_p;
/* 3. boolean true indicates "indentity" */
if (!ecma_op_is_callable (on_fulfilled))
{
on_fulfilled = ECMA_VALUE_TRUE;
}
/* 4. boolean false indicates "thrower" */
if (!ecma_op_is_callable (on_rejected))
{
on_rejected = ECMA_VALUE_FALSE;
}
ecma_object_t *promise_obj_p = ecma_get_object_from_value (promise);
ecma_promise_object_t *promise_p = (ecma_promise_object_t *) promise_obj_p;
uint16_t flags = ecma_promise_get_flags (promise_obj_p);
if (flags & ECMA_PROMISE_IS_PENDING)
{
/* 7. */
/* [ capability, (on_fulfilled), (on_rejected) ] */
ecma_value_t reaction_values[3];
ecma_value_t *reactions_p = reaction_values + 1;
uint8_t tag = 0;
if (on_fulfilled != ECMA_VALUE_TRUE)
{
tag |= JMEM_FIRST_TAG_BIT_MASK;
*reactions_p++ = on_fulfilled;
}
if (on_rejected != ECMA_VALUE_FALSE)
{
tag |= JMEM_SECOND_TAG_BIT_MASK;
*reactions_p++ = on_rejected;
}
ECMA_SET_NON_NULL_POINTER_TAG (reaction_values[0], result_capability_obj_p, tag);
uint32_t value_count = (uint32_t) (reactions_p - reaction_values);
ecma_collection_append (promise_p->reactions, reaction_values, value_count);
}
else if (flags & ECMA_PROMISE_IS_FULFILLED)
{
/* 8. */
ecma_value_t value = ecma_promise_get_result (promise_obj_p);
ecma_enqueue_promise_reaction_job (ecma_make_object_value (result_capability_obj_p), on_fulfilled, value);
ecma_free_value (value);
}
else
{
/* 9. */
ecma_value_t reason = ecma_promise_get_result (promise_obj_p);
ecma_enqueue_promise_reaction_job (ecma_make_object_value (result_capability_obj_p), on_rejected, reason);
ecma_free_value (reason);
#if JERRY_PROMISE_CALLBACK
if (ecma_promise_get_flags (promise_obj_p) & ECMA_PROMISE_UNHANDLED_REJECT)
{
promise_p->header.u.cls.u1.promise_flags &= (uint8_t) ~ECMA_PROMISE_UNHANDLED_REJECT;
if (JERRY_UNLIKELY (JERRY_CONTEXT (promise_callback_filters) & JERRY_PROMISE_EVENT_FILTER_ERROR))
{
JERRY_ASSERT (JERRY_CONTEXT (promise_callback) != NULL);
JERRY_CONTEXT (promise_callback) (JERRY_PROMISE_EVENT_CATCH_HANDLER_ADDED,
promise,
ECMA_VALUE_UNDEFINED,
JERRY_CONTEXT (promise_callback_user_p));
}
}
#endif /* JERRY_PROMISE_CALLBACK */
}
/* 10. */
return ecma_copy_value (capability_p->header.u.cls.u3.promise);
} /* ecma_promise_perform_then */
/**
* @}
* @}