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Implement WeakRef Object (#4546)

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Related test262 test-cases has been removed from skip list.
Execpt two test-case since they need other feature to work (Finalization registry and async GC)

JerryScript-DCO-1.0-Signed-off-by: Bence Gabor Kis kisbg@inf.u-szeged.hu
This commit is contained in:
kisbg
2021-03-01 12:46:54 +00:00
committed by GitHub
parent 9556701742
commit 129ca4946c
24 changed files with 500 additions and 108 deletions
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jerry-core/ecma/base/ecma-gc.c
+23 -5
View File
@@ -1382,7 +1382,7 @@ ecma_gc_free_properties (ecma_object_t *object_p) /**< object */
break;
}
#endif /* JERRY_ESNEXT */
#if JERRY_BUILTIN_WEAKMAP || JERRY_BUILTIN_WEAKSET
#if JERRY_BUILTIN_WEAKMAP || JERRY_BUILTIN_WEAKSET || JERRY_BUILTIN_WEAKREF
case LIT_INTERNAL_MAGIC_STRING_WEAK_REFS:
{
ecma_collection_t *refs_p = ECMA_GET_INTERNAL_VALUE_POINTER (ecma_collection_t,
@@ -1392,17 +1392,23 @@ ecma_gc_free_properties (ecma_object_t *object_p) /**< object */
const ecma_value_t value = refs_p->buffer_p[j];
if (!ecma_is_value_empty (value))
{
ecma_object_t *container_p = ecma_get_object_from_value (value);
ecma_object_t *obj_p = ecma_get_object_from_value (value);
ecma_op_container_remove_weak_entry (container_p,
ecma_make_object_value (object_p));
if (ecma_object_class_is (obj_p, LIT_MAGIC_STRING_WEAKREF_UL))
{
JERRY_ASSERT (ecma_object_class_is (obj_p, LIT_MAGIC_STRING_WEAKREF_UL));
ecma_extended_object_t *ext_obj_p = (ecma_extended_object_t *) obj_p;
ext_obj_p->u.class_prop.u.target = ECMA_VALUE_UNDEFINED;
continue;
}
ecma_op_container_remove_weak_entry (obj_p, ecma_make_object_value (object_p));
}
}
ecma_collection_destroy (refs_p);
break;
}
#endif /* JERRY_BUILTIN_WEAKMAP || JERRY_BUILTIN_WEAKSET */
#endif /* JERRY_BUILTIN_WEAKMAP || JERRY_BUILTIN_WEAKSET || JERRY_BUILTIN_WEAKREF */
default:
{
JERRY_ASSERT (name_cp == LIT_INTERNAL_MAGIC_STRING_NATIVE_POINTER);
@@ -1641,6 +1647,18 @@ ecma_gc_free_object (ecma_object_t *object_p) /**< object to free */
break;
}
#endif /* JERRY_BUILTIN_PROMISE */
#if JERRY_BUILTIN_WEAKREF
case LIT_MAGIC_STRING_WEAKREF_UL:
{
ecma_value_t target = ext_object_p->u.class_prop.u.target;
if (!ecma_is_value_undefined (target))
{
ecma_op_object_unref_weak (ecma_get_object_from_value (target), ecma_make_object_value (object_p));
}
break;
}
#endif /* JERRY_BUILTIN_WEAKREF */
#if JERRY_BUILTIN_CONTAINER
#if JERRY_BUILTIN_MAP
case LIT_MAGIC_STRING_MAP_UL:
jerry-core/ecma/base/ecma-globals.h
+1 -1
View File
@@ -959,7 +959,7 @@ typedef struct
ecma_value_t date; /**< Date object [[DateValue]] internal property */
int32_t tza; /**< TimeZone adjustment for date objects */
uint32_t length; /**< length related property (e.g. length of ArrayBuffer) */
ecma_value_t target; /**< [[ProxyTarget]] internal property */
ecma_value_t target; /**< [[ProxyTarget]] or [[WeakRefTarget]] internal property */
ecma_value_t head; /**< points to the async generator task queue head item */
ecma_value_t promise; /**< PromiseCapability[[Promise]] internal slot */
} u;