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Add non-standard behaviour support for Proxies (#4562)

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JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2021-02-04 15:58:16 +01:00
committed by GitHub
parent e9df2ca814
commit 9ca046b670
12 changed files with 292 additions and 21 deletions
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jerry-core/ecma/operations/ecma-proxy-object.c
+31 -8
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@@ -48,7 +48,8 @@
*/
ecma_object_t *
ecma_proxy_create (ecma_value_t target, /**< proxy target */
ecma_value_t handler) /**< proxy handler */
ecma_value_t handler, /**< proxy handler */
uint32_t options) /**< ecma_proxy_flag_types_t option bits */
{
/* ES2015: 1, 3. */
/* ES11+: 1 - 2. */
@@ -65,17 +66,19 @@ ecma_proxy_create (ecma_value_t target, /**< proxy target */
ecma_proxy_object_t *proxy_obj_p = (ecma_proxy_object_t *) obj_p;
obj_p->u2.prototype_cp = (jmem_cpointer_t) options;
/* ES2015: 7. */
/* ES11+: 5. */
if (ecma_op_is_callable (target))
{
ECMA_SET_FIRST_BIT_TO_POINTER_TAG (obj_p->u2.prototype_cp);
obj_p->u2.prototype_cp |= ECMA_PROXY_IS_CALLABLE;
/* ES2015: 7.b. */
/* ES11+: 5.b. */
if (ecma_is_constructor (target))
{
ECMA_SET_SECOND_BIT_TO_POINTER_TAG (obj_p->u2.prototype_cp);
obj_p->u2.prototype_cp |= ECMA_PROXY_IS_CONSTRUCTABLE;
}
}
@@ -150,7 +153,7 @@ ecma_proxy_create_revocable (ecma_value_t target, /**< target argument */
ecma_value_t handler) /**< handler argument */
{
/* 1. */
ecma_object_t *proxy_p = ecma_proxy_create (target, handler);
ecma_object_t *proxy_p = ecma_proxy_create (target, handler, 0);
/* 2. */
if (proxy_p == NULL)
@@ -688,6 +691,25 @@ ecma_proxy_object_get_own_property_descriptor (ecma_object_t *obj_p, /**< proxy
return ecma_raise_type_error (ECMA_ERR_MSG ("Trap is neither an object nor undefined"));
}
if (obj_p->u2.prototype_cp & ECMA_PROXY_SKIP_GET_OWN_PROPERTY_CHECKS)
{
if (ecma_is_value_undefined (trap_result))
{
return ECMA_VALUE_FALSE;
}
ecma_value_t result_val = ecma_op_to_property_descriptor (trap_result, prop_desc_p);
ecma_free_value (trap_result);
if (ECMA_IS_VALUE_ERROR (result_val))
{
return result_val;
}
ecma_op_to_complete_property_descriptor (prop_desc_p);
return ECMA_VALUE_TRUE;
}
/* 12. */
ecma_property_descriptor_t target_desc;
ecma_value_t target_status = ecma_op_object_get_own_property_descriptor (target_obj_p, prop_name_p, &target_desc);
@@ -1118,7 +1140,8 @@ ecma_proxy_object_get (ecma_object_t *obj_p, /**< proxy object */
ecma_deref_object (func_obj_p);
/* 10. */
if (ECMA_IS_VALUE_ERROR (trap_result))
if (ECMA_IS_VALUE_ERROR (trap_result)
|| (obj_p->u2.prototype_cp & ECMA_PROXY_SKIP_GET_CHECKS))
{
return trap_result;
}
@@ -1147,9 +1170,9 @@ ecma_proxy_object_get (ecma_object_t *obj_p, /**< proxy object */
ret_value = ecma_raise_type_error (ECMA_ERR_MSG ("Incorrect value is returned by a Proxy 'get' trap"));
}
else if (!(target_desc.flags & ECMA_PROP_IS_CONFIGURABLE)
&& (target_desc.flags & (ECMA_PROP_IS_GET_DEFINED | ECMA_PROP_IS_SET_DEFINED))
&& target_desc.get_p == NULL
&& !ecma_is_value_undefined (trap_result))
&& (target_desc.flags & (ECMA_PROP_IS_GET_DEFINED | ECMA_PROP_IS_SET_DEFINED))
&& target_desc.get_p == NULL
&& !ecma_is_value_undefined (trap_result))
{
ret_value = ecma_raise_type_error (ECMA_ERR_MSG ("Property of a Proxy is non-configurable and "
"does not have a getter function"));