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Implement ES2015 class feature (part II.) (#2439)

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This patch is the second milestone of the implementation of this new language element.

Supported:
 - Single class inheritance
 - Functionality of 'super' keyword
 - Implicit constructor in class heritage
 - Specific behaviour while extending with the built-in 'Array' or '%TypedArray%' object
 - Abstract subclasses (Mix-ins)

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
This commit is contained in:
Robert Fancsik
2018-10-25 16:00:48 +02:00
committed by Akos Kiss
parent e0e6363f85
commit d1860d0e34
54 changed files with 2543 additions and 199 deletions
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jerry-core/ecma/base/ecma-helpers.c
+17 -6
View File
@@ -127,7 +127,7 @@ ecma_create_decl_lex_env (ecma_object_t *outer_lexical_environment_p) /**< outer
/**
* Create a object lexical environment with specified outer lexical environment
* (or NULL if the environment is not nested), binding object and provideThis flag.
* (or NULL if the environment is not nested), binding object and provided type flag.
*
* See also: ECMA-262 v5, 10.2.1.2
*
@@ -137,16 +137,22 @@ ecma_create_decl_lex_env (ecma_object_t *outer_lexical_environment_p) /**< outer
*/
ecma_object_t *
ecma_create_object_lex_env (ecma_object_t *outer_lexical_environment_p, /**< outer lexical environment */
ecma_object_t *binding_obj_p) /**< binding object */
ecma_object_t *binding_obj_p, /**< binding object */
ecma_lexical_environment_type_t type) /**< type of the new lexical environment */
{
#ifndef CONFIG_DISABLE_ES2015_CLASS
JERRY_ASSERT (type == ECMA_LEXICAL_ENVIRONMENT_THIS_OBJECT_BOUND
|| type == ECMA_LEXICAL_ENVIRONMENT_SUPER_OBJECT_BOUND);
#else /* CONFIG_DISABLE_ES2015_CLASS */
JERRY_ASSERT (type == ECMA_LEXICAL_ENVIRONMENT_THIS_OBJECT_BOUND);
#endif /* !CONFIG_DISABLE_ES2015_CLASS */
JERRY_ASSERT (binding_obj_p != NULL
&& !ecma_is_lexical_environment (binding_obj_p));
ecma_object_t *new_lexical_environment_p = ecma_alloc_object ();
uint16_t type = ECMA_OBJECT_FLAG_BUILT_IN_OR_LEXICAL_ENV | ECMA_LEXICAL_ENVIRONMENT_THIS_OBJECT_BOUND;
new_lexical_environment_p->type_flags_refs = type;
new_lexical_environment_p->type_flags_refs = (uint16_t) (ECMA_OBJECT_FLAG_BUILT_IN_OR_LEXICAL_ENV | type);
ecma_init_gc_info (new_lexical_environment_p);
@@ -355,7 +361,12 @@ ecma_get_lex_env_binding_object (const ecma_object_t *object_p) /**< object-boun
{
JERRY_ASSERT (object_p != NULL);
JERRY_ASSERT (ecma_is_lexical_environment (object_p));
#ifndef CONFIG_DISABLE_ES2015
JERRY_ASSERT (ecma_get_lex_env_type (object_p) == ECMA_LEXICAL_ENVIRONMENT_THIS_OBJECT_BOUND
|| ecma_get_lex_env_type (object_p) == ECMA_LEXICAL_ENVIRONMENT_SUPER_OBJECT_BOUND);
#else /* CONFIG_DISABLE_ES2015 */
JERRY_ASSERT (ecma_get_lex_env_type (object_p) == ECMA_LEXICAL_ENVIRONMENT_THIS_OBJECT_BOUND);
#endif /* !CONFIG_DISABLE_ES2015 */
return ECMA_GET_NON_NULL_POINTER (ecma_object_t,
object_p->property_list_or_bound_object_cp);
@@ -766,7 +777,7 @@ ecma_free_property (ecma_object_t *object_p, /**< object the property belongs to
/* Must be a native pointer. */
JERRY_ASSERT (ECMA_PROPERTY_GET_NAME_TYPE (*property_p) == ECMA_DIRECT_STRING_MAGIC
&& (name_cp == LIT_INTERNAL_MAGIC_STRING_NATIVE_POINTER));
&& name_cp >= LIT_FIRST_INTERNAL_MAGIC_STRING);
break;
}
}