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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/operations/ecma-array-object.c
+69 -6
View File
@@ -24,6 +24,7 @@
#include "ecma-number-arithmetic.h"
#include "ecma-objects.h"
#include "ecma-objects-general.h"
#include "ecma-function-object.h"
/** \addtogroup ecma ECMA
* @{
@@ -43,14 +44,14 @@
*/
ecma_value_t
ecma_op_create_array_object (const ecma_value_t *arguments_list_p, /**< list of arguments that
are passed to Array constructor */
* are passed to Array constructor */
ecma_length_t arguments_list_len, /**< length of the arguments' list */
bool is_treat_single_arg_as_length) /**< if the value is true,
arguments_list_len is 1
and single argument is Number,
then treat the single argument
as new Array's length rather
than as single item of the Array */
* arguments_list_len is 1
* and single argument is Number,
* then treat the single argument
* as new Array's length rather
* than as single item of the Array */
{
JERRY_ASSERT (arguments_list_len == 0
|| arguments_list_p != NULL);
@@ -131,6 +132,68 @@ ecma_op_create_array_object (const ecma_value_t *arguments_list_p, /**< list of
return ecma_make_object_value (object_p);
} /* ecma_op_create_array_object */
#ifndef CONFIG_DISABLE_ES2015_CLASS
/**
* Array object creation with custom prototype.
*
* See also: ECMA-262 v6, 9.4.2.3
*
* @return ecma value
* Returned value must be freed with ecma_free_value
*/
ecma_value_t
ecma_op_create_array_object_by_constructor (const ecma_value_t *arguments_list_p, /**< list of arguments that
* are passed to
* Array constructor */
ecma_length_t arguments_list_len, /**< length of the arguments' list */
bool is_treat_single_arg_as_length, /**< if the value is true,
* arguments_list_len is 1
* and single argument is Number,
* then treat the single argument
* as new Array's length rather
* than as single item of the
* Array */
ecma_object_t *object_p) /**< The object from whom the new array object
* is being created */
{
ecma_value_t constructor_value = ecma_op_object_get_by_magic_id (object_p, LIT_MAGIC_STRING_CONSTRUCTOR);
if (ECMA_IS_VALUE_ERROR (constructor_value)
|| !ecma_is_value_object (constructor_value)
|| !ecma_is_constructor (constructor_value))
{
ecma_free_value (constructor_value);
return ecma_raise_type_error (ECMA_ERR_MSG ("object.constructor is not a constructor."));
}
ecma_object_t *constructor_object_p = ecma_get_object_from_value (constructor_value);
ecma_value_t constructor_prototype = ecma_op_object_get_by_magic_id (constructor_object_p,
LIT_MAGIC_STRING_PROTOTYPE);
ecma_deref_object (constructor_object_p);
if (ECMA_IS_VALUE_ERROR (constructor_prototype))
{
return constructor_prototype;
}
ecma_value_t result = ecma_op_create_array_object (arguments_list_p,
arguments_list_len,
is_treat_single_arg_as_length);
if (ecma_is_value_object (constructor_prototype))
{
ecma_object_t *result_object_p = ecma_get_object_from_value (result);
ecma_object_t *constructor_prototpye_object_p = ecma_get_object_from_value (constructor_prototype);
ECMA_SET_POINTER (result_object_p->prototype_or_outer_reference_cp, constructor_prototpye_object_p);
}
ecma_free_value (constructor_prototype);
return result;
} /* ecma_op_create_array_object_by_constructor */
#endif /* !CONFIG_DISABLE_ES2015_CLASS */
/**
* Update the length of an array to a new length
*