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

Rework resolving references and namespace creation in modules (#4695)

Browse Source 
- Properties of namespace objects are ordered in lexical order
- The namespace object is created and imports are bound during linking phase
- Namespace imports are changed to read-only
- Reduced memory consumption

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2021-07-06 14:50:19 +02:00
committed by GitHub
parent ccc152594a
commit d1204ab1c9
14 changed files with 882 additions and 476 deletions
Download Patch File Download Diff File Expand all files Collapse all files
jerry-core/ecma/base/ecma-helpers.c
+45 -30
View File
@@ -365,16 +365,20 @@ ecma_clone_decl_lexical_environment (ecma_object_t *lex_env_p, /**< declarative
ecma_object_t *new_lex_env_p = ecma_create_decl_lex_env (outer_lex_env_p);
jmem_cpointer_t prop_iter_cp = lex_env_p->u1.property_list_cp;
ecma_property_header_t *prop_iter_p;
JERRY_ASSERT (prop_iter_cp != JMEM_CP_NULL);
ecma_property_header_t *prop_iter_p = ECMA_GET_NON_NULL_POINTER (ecma_property_header_t,
prop_iter_cp);
#if JERRY_PROPERTY_HASHMAP
prop_iter_p = ECMA_GET_NON_NULL_POINTER (ecma_property_header_t, prop_iter_cp);
if (prop_iter_p->types[0] == ECMA_PROPERTY_TYPE_HASHMAP)
{
prop_iter_cp = prop_iter_p->next_property_cp;
}
JERRY_ASSERT (prop_iter_cp != JMEM_CP_NULL);
#endif /* JERRY_PROPERTY_HASHMAP */
do
{
@@ -630,9 +634,9 @@ ecma_create_named_accessor_property (ecma_object_t *object_p, /**< object */
void
ecma_create_named_reference_property (ecma_object_t *object_p, /**< object */
ecma_string_t *name_p, /**< property name */
ecma_property_t *property_p) /**< referenced property */
ecma_value_t reference) /**< property reference */
{
JERRY_ASSERT (object_p != NULL && name_p != NULL && property_p != NULL);
JERRY_ASSERT (object_p != NULL && name_p != NULL);
JERRY_ASSERT (ecma_find_named_property (object_p, name_p) == NULL);
JERRY_ASSERT ((ecma_is_lexical_environment (object_p)
&& ecma_get_lex_env_type (object_p) == ECMA_LEXICAL_ENVIRONMENT_CLASS
@@ -640,34 +644,9 @@ ecma_create_named_reference_property (ecma_object_t *object_p, /**< object */
|| ecma_object_class_is (object_p, ECMA_OBJECT_CLASS_MODULE_NAMESPACE));
uint8_t type_and_flags = ECMA_PROPERTY_CONFIGURABLE_ENUMERABLE;
ecma_property_value_t *referenced_value_p = ECMA_PROPERTY_VALUE_PTR (property_p);
ecma_property_value_t value;
if (*property_p & ECMA_PROPERTY_FLAG_DATA)
{
jmem_cpointer_tag_t offset = (jmem_cpointer_tag_t) (((uintptr_t) property_p) & 0x1);
#if JERRY_CPOINTER_32_BIT
if (offset != 0)
{
--referenced_value_p;
}
#else /* !JERRY_CPOINTER_32_BIT */
if (offset == 0)
{
++referenced_value_p;
}
#endif /* JERRY_CPOINTER_32_BIT */
JERRY_ASSERT ((((uintptr_t) referenced_value_p) & (((uintptr_t) 1 << JMEM_ALIGNMENT_LOG) - 1)) == 0);
ECMA_SET_NON_NULL_POINTER_TAG (value.value, referenced_value_p, offset);
}
else
{
value.value = referenced_value_p->value;
}
value.value = reference;
ecma_create_property (object_p, name_p, type_and_flags, value, NULL);
} /* ecma_create_named_reference_property */
@@ -1074,6 +1053,42 @@ ecma_set_named_accessor_property_setter (ecma_object_t *object_p, /**< the prope
#if JERRY_MODULE_SYSTEM
/**
* Construct a reference to a given property
*
* @return property reference
*/
ecma_value_t
ecma_property_to_reference (ecma_property_t *property_p) /**< data or reference property */
{
ecma_property_value_t *referenced_value_p = ECMA_PROPERTY_VALUE_PTR (property_p);
if (!(*property_p & ECMA_PROPERTY_FLAG_DATA))
{
return referenced_value_p->value;
}
jmem_cpointer_tag_t offset = (jmem_cpointer_tag_t) (((uintptr_t) property_p) & 0x1);
#if JERRY_CPOINTER_32_BIT
if (offset != 0)
{
--referenced_value_p;
}
#else /* !JERRY_CPOINTER_32_BIT */
if (offset == 0)
{
++referenced_value_p;
}
#endif /* JERRY_CPOINTER_32_BIT */
JERRY_ASSERT ((((uintptr_t) referenced_value_p) & (((uintptr_t) 1 << JMEM_ALIGNMENT_LOG) - 1)) == 0);
ecma_value_t result;
ECMA_SET_NON_NULL_POINTER_TAG (result, referenced_value_p, offset);
return result;
} /* ecma_property_to_reference */
/**
* Gets the referenced property value
*