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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/builtin-objects/ecma-builtin-generator-prototype.c
+4 -3
View File
@@ -75,7 +75,7 @@ ecma_builtin_generator_prototype_object_do (vm_executable_object_t *executable_o
{
if (executable_object_p->extended_object.u.class_prop.extra_info & ECMA_GENERATOR_ITERATE_AND_YIELD)
{
ecma_value_t iterator = executable_object_p->extended_object.u.class_prop.u.value;
ecma_value_t iterator = executable_object_p->frame_ctx.block_result;
bool done = false;
ecma_value_t result = ecma_op_iterator_do (resume_mode, iterator, arg, &done);
@@ -102,6 +102,7 @@ ecma_builtin_generator_prototype_object_do (vm_executable_object_t *executable_o
}
executable_object_p->extended_object.u.class_prop.extra_info &= (uint16_t) ~ECMA_GENERATOR_ITERATE_AND_YIELD;
executable_object_p->frame_ctx.block_result = ECMA_VALUE_UNDEFINED;
if (ECMA_IS_VALUE_ERROR (arg))
{
@@ -137,7 +138,7 @@ ecma_builtin_generator_prototype_object_do (vm_executable_object_t *executable_o
if (byte_code_p[-1] == CBC_EXT_YIELD_ITERATOR)
{
ecma_value_t iterator = ecma_op_get_iterator (value, ECMA_VALUE_EMPTY);
ecma_value_t iterator = ecma_op_get_iterator (value, ECMA_VALUE_SYNC_ITERATOR);
ecma_free_value (value);
if (ECMA_IS_VALUE_ERROR (iterator))
@@ -149,7 +150,7 @@ ecma_builtin_generator_prototype_object_do (vm_executable_object_t *executable_o
ecma_deref_object (ecma_get_object_from_value (iterator));
executable_object_p->extended_object.u.class_prop.extra_info |= ECMA_GENERATOR_ITERATE_AND_YIELD;
executable_object_p->extended_object.u.class_prop.u.value = iterator;
executable_object_p->frame_ctx.block_result = iterator;
arg = ECMA_VALUE_UNDEFINED;
continue;
}
jerry-core/ecma/builtin-objects/ecma-builtin-intrinsic.inc.h
+4
View File
@@ -21,6 +21,10 @@
#if ENABLED (JERRY_ESNEXT)
/* ECMA-262 v10, 19.4.2.1 */
SYMBOL_VALUE (LIT_GLOBAL_SYMBOL_ASYNC_ITERATOR,
LIT_MAGIC_STRING_ASYNC_ITERATOR)
/* ECMA-262 v6, 19.4.2.2 */
SYMBOL_VALUE (LIT_GLOBAL_SYMBOL_HAS_INSTANCE,
LIT_MAGIC_STRING_HAS_INSTANCE)
jerry-core/ecma/builtin-objects/ecma-builtin-promise.c
+3 -2
View File
@@ -527,8 +527,9 @@ ecma_builtin_promise_race_or_all (ecma_value_t this_arg, /**< 'this' argument */
return capability;
}
ecma_value_t iterator = ecma_builtin_promise_reject_abrupt (ecma_op_get_iterator (iterable, ECMA_VALUE_EMPTY),
capability);
ecma_value_t iterator;
iterator = ecma_builtin_promise_reject_abrupt (ecma_op_get_iterator (iterable, ECMA_VALUE_SYNC_ITERATOR),
capability);
if (ECMA_IS_VALUE_ERROR (iterator))
{
jerry-core/ecma/builtin-objects/ecma-builtin-symbol.inc.h
+5
View File
@@ -41,6 +41,11 @@ OBJECT_VALUE (LIT_MAGIC_STRING_PROTOTYPE,
ECMA_BUILTIN_ID_SYMBOL_PROTOTYPE,
ECMA_PROPERTY_FIXED)
/* ECMA-262 v10, 19.4.2.1 */
INTRINSIC_PROPERTY (LIT_MAGIC_STRING_ASYNC_ITERATOR,
LIT_GLOBAL_SYMBOL_ASYNC_ITERATOR,
ECMA_PROPERTY_FIXED)
/* ECMA-262 v6, 19.4.2.2 */
INTRINSIC_PROPERTY (LIT_MAGIC_STRING_HAS_INSTANCE,
LIT_GLOBAL_SYMBOL_HAS_INSTANCE,