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Implement yield* operator (#3923)

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Missing features:
- caching next() method (this also true for normal generators)
- automatic sync to async generator conversion

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2020-06-25 17:11:16 +02:00
committed by GitHub
parent c12c60c550
commit f88489beef
28 changed files with 1258 additions and 111 deletions
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jerry-core/ecma/operations/ecma-jobqueue.c
+43 -1
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@@ -260,7 +260,49 @@ ecma_process_promise_async_reaction_job (ecma_job_promise_async_reaction_t *job_
if (ecma_job_queue_get_type (&job_p->header) == ECMA_JOB_PROMISE_ASYNC_REACTION_REJECTED)
{
executable_object_p->frame_ctx.byte_code_p = opfunc_resume_executable_object_with_throw;
if (!(executable_object_p->extended_object.u.class_prop.extra_info & ECMA_GENERATOR_ITERATE_AND_YIELD))
{
executable_object_p->frame_ctx.byte_code_p = opfunc_resume_executable_object_with_throw;
}
else if (ECMA_ASYNC_YIELD_ITERATOR_GET_STATE (executable_object_p) == ECMA_ASYNC_YIELD_ITERATOR_AWAIT_RETURN)
{
/* Unlike other operations, return captures rejected promises as well. */
ECMA_ASYNC_YIELD_ITERATOR_CHANGE_STATE (executable_object_p, RETURN, OPERATION);
}
else
{
/* Exception: Abort iterators, clear all status. */
ECMA_ASYNC_YIELD_ITERATOR_END (executable_object_p);
JERRY_ASSERT (ecma_is_value_object (executable_object_p->frame_ctx.block_result));
executable_object_p->frame_ctx.block_result = ECMA_VALUE_UNDEFINED;
executable_object_p->frame_ctx.byte_code_p = opfunc_resume_executable_object_with_throw;
}
}
if (executable_object_p->extended_object.u.class_prop.extra_info & ECMA_GENERATOR_ITERATE_AND_YIELD)
{
job_p->argument = ecma_async_yield_continue_await (executable_object_p, job_p->argument);
if (ECMA_IS_VALUE_ERROR (job_p->argument))
{
job_p->argument = jcontext_take_exception ();
executable_object_p->frame_ctx.byte_code_p = opfunc_resume_executable_object_with_throw;
}
else if (executable_object_p->extended_object.u.class_prop.extra_info & ECMA_GENERATOR_ITERATE_AND_YIELD)
{
/* Continue iteration. */
JERRY_ASSERT (job_p->argument == ECMA_VALUE_UNDEFINED);
ecma_free_promise_async_reaction_job (job_p);
return ECMA_VALUE_UNDEFINED;
}
/* End of yield*, clear all status. */
ECMA_ASYNC_YIELD_ITERATOR_END (executable_object_p);
JERRY_ASSERT (ecma_is_value_object (executable_object_p->frame_ctx.block_result));
executable_object_p->frame_ctx.block_result = ECMA_VALUE_UNDEFINED;
}
ecma_value_t result = opfunc_resume_executable_object (executable_object_p, job_p->argument);