YourWishes/jerryscript
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Implement for-await-of statement. (#3946)

Browse Source 
AsyncIteratorClose has not supported yet.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2020-06-30 11:21:50 +02:00
committed by GitHub
parent 0b404ea893
commit 5535ea88ac
20 changed files with 729 additions and 199 deletions
Download Patch File Download Diff File Expand all files Collapse all files
jerry-core/vm/opcodes.c
+54 -3
View File
@@ -730,6 +730,12 @@ opfunc_resume_executable_object (vm_executable_object_t *executable_object_p, /*
ecma_value_t *stack_top_p = executable_object_p->frame_ctx.stack_top_p;
if (value != ECMA_VALUE_EMPTY)
{
*stack_top_p = value;
executable_object_p->frame_ctx.stack_top_p = stack_top_p + 1;
}
if (executable_object_p->frame_ctx.context_depth > 0)
{
while (register_p < register_end_p)
@@ -752,9 +758,6 @@ opfunc_resume_executable_object (vm_executable_object_t *executable_object_p, /*
ecma_ref_if_object (executable_object_p->frame_ctx.block_result);
*register_p++ = value;
executable_object_p->frame_ctx.stack_top_p = register_p;
JERRY_ASSERT (ECMA_EXECUTABLE_OBJECT_IS_SUSPENDED (executable_object_p->extended_object.u.class_prop.extra_info));
executable_object_p->extended_object.u.class_prop.extra_info |= ECMA_EXECUTABLE_OBJECT_RUNNING;
@@ -840,6 +843,54 @@ opfunc_async_generator_yield (ecma_extended_object_t *async_generator_object_p,
}
} /* opfunc_async_generator_yield */
/**
* Creates a new executable object and awaits for the value
*
* Note:
* extra_flags can be used to set additional extra_info flags
*
* @return a new Promise object on success, error otherwise
*/
ecma_value_t
opfunc_async_create_and_await (vm_frame_ctx_t *frame_ctx_p, /**< frame context */
ecma_value_t value, /**< awaited value (takes reference) */
uint16_t extra_flags) /**< extra flags */
{
JERRY_ASSERT (frame_ctx_p->block_result == ECMA_VALUE_UNDEFINED);
/* TODO: An CBC_FUNCTION_ASYNC_ARROW should be defined. */
JERRY_ASSERT (CBC_FUNCTION_GET_TYPE (frame_ctx_p->bytecode_header_p->status_flags) == CBC_FUNCTION_ASYNC
|| CBC_FUNCTION_GET_TYPE (frame_ctx_p->bytecode_header_p->status_flags) == CBC_FUNCTION_ARROW);
ecma_object_t *promise_p = ecma_builtin_get (ECMA_BUILTIN_ID_PROMISE);
ecma_value_t result = ecma_promise_reject_or_resolve (ecma_make_object_value (promise_p), value, true);
ecma_free_value (value);
if (ECMA_IS_VALUE_ERROR (result))
{
return result;
}
vm_executable_object_t *executable_object_p;
executable_object_p = opfunc_create_executable_object (frame_ctx_p, VM_CREATE_EXECUTABLE_OBJECT_ASYNC);
executable_object_p->extended_object.u.class_prop.extra_info |= extra_flags;
ecma_promise_async_then (result, ecma_make_object_value ((ecma_object_t *) executable_object_p));
ecma_deref_object ((ecma_object_t *) executable_object_p);
ecma_free_value (result);
ecma_object_t *old_new_target_p = JERRY_CONTEXT (current_new_target);
JERRY_CONTEXT (current_new_target) = promise_p;
result = ecma_op_create_promise_object (ECMA_VALUE_EMPTY, ECMA_PROMISE_EXECUTOR_EMPTY);
JERRY_ASSERT (ecma_is_value_object (result));
executable_object_p->frame_ctx.block_result = result;
JERRY_CONTEXT (current_new_target) = old_new_target_p;
return result;
} /* opfunc_async_create_and_await */
/**
* Implicit class constructor handler when the classHeritage is not present.
*