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/* Copyright JS Foundation and other contributors, http://js.foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "ecma-arraybuffer-object.h"
#include "ecma-builtin-helpers.h"
#include "ecma-builtins.h"
#include "ecma-iterator-object.h"
#include "ecma-typedarray-object.h"
#if JERRY_ESNEXT
#define ECMA_BUILTINS_INTERNAL
#include "ecma-builtins-internal.h"
/**
* This object has a custom dispatch function.
*/
#define BUILTIN_CUSTOM_DISPATCH
/**
* List of built-in routine identifiers.
*/
enum
{
ECMA_ARRAY_ITERATOR_PROTOTYPE_ROUTINE_START = 0,
ECMA_ARRAY_ITERATOR_PROTOTYPE_OBJECT_NEXT,
};
#define BUILTIN_INC_HEADER_NAME "ecma-builtin-array-iterator-prototype.inc.h"
#define BUILTIN_UNDERSCORED_ID array_iterator_prototype
#include "ecma-builtin-internal-routines-template.inc.h"
/** \addtogroup ecma ECMA
* @{
*
* \addtogroup ecmabuiltins
* @{
*
* \addtogroup %arrayiteratorprototype% ECMA %ArrayIteratorPrototype% object built-in
* @{
*/
/**
* The %ArrayIteratorPrototype% object's 'next' routine
*
* See also:
* ECMA-262 v6, 22.1.5.2.1
*
* Note:
* Returned value must be freed with ecma_free_value.
*
* @return iterator result object, if success
* error - otherwise
*/
static ecma_value_t
ecma_builtin_array_iterator_prototype_object_next (ecma_value_t this_val) /**< this argument */
{
/* 1 - 2. */
if (!ecma_is_value_object (this_val))
{
return ecma_raise_type_error (ECMA_ERR_ARGUMENT_THIS_NOT_OBJECT);
}
ecma_object_t *obj_p = ecma_get_object_from_value (this_val);
ecma_extended_object_t *ext_obj_p = (ecma_extended_object_t *) obj_p;
/* 3. */
if (!ecma_object_class_is (obj_p, ECMA_OBJECT_CLASS_ARRAY_ITERATOR))
{
return ecma_raise_type_error (ECMA_ERR_ARGUMENT_THIS_NOT_ITERATOR);
}
ecma_value_t iterated_value = ext_obj_p->u.cls.u3.iterated_value;
/* 4 - 5 */
if (ecma_is_value_empty (iterated_value))
{
return ecma_create_iter_result_object (ECMA_VALUE_UNDEFINED, ECMA_VALUE_TRUE);
}
ecma_object_t *array_object_p = ecma_get_object_from_value (iterated_value);
/* 8. */
ecma_length_t length;
if (ecma_object_is_typedarray (array_object_p))
{
/* a. */
ecma_object_t *arraybuffer_p = ecma_typedarray_get_arraybuffer (array_object_p);
if (ecma_arraybuffer_is_detached (arraybuffer_p))
{
return ecma_raise_type_error (ECMA_ERR_ARRAYBUFFER_IS_DETACHED);
}
/* b. */
length = ecma_typedarray_get_length (array_object_p);
}
else
{
ecma_value_t len_value = ecma_op_object_get_length (array_object_p, &length);
if (ECMA_IS_VALUE_ERROR (len_value))
{
return len_value;
}
}
ecma_length_t index = ext_obj_p->u.cls.u2.iterator_index;
if (JERRY_UNLIKELY (index == ECMA_ITERATOR_INDEX_LIMIT))
{
/* After the ECMA_ITERATOR_INDEX_LIMIT limit is reached the [[%Iterator%NextIndex]]
property is stored as an internal property */
ecma_string_t *prop_name_p = ecma_get_magic_string (LIT_INTERNAL_MAGIC_STRING_ITERATOR_NEXT_INDEX);
ecma_value_t index_value = ecma_op_object_get (obj_p, prop_name_p);
if (!ecma_is_value_undefined (index_value))
{
index = (ecma_length_t) (ecma_get_number_from_value (index_value) + 1);
}
ecma_value_t put_result = ecma_op_object_put (obj_p, prop_name_p, ecma_make_length_value (index), true);
JERRY_ASSERT (ecma_is_value_true (put_result));
ecma_free_value (index_value);
}
else
{
/* 11. */
ext_obj_p->u.cls.u2.iterator_index++;
}
if (index >= length)
{
ext_obj_p->u.cls.u3.iterated_value = ECMA_VALUE_EMPTY;
return ecma_create_iter_result_object (ECMA_VALUE_UNDEFINED, ECMA_VALUE_TRUE);
}
/* 7. */
uint8_t iterator_kind = ext_obj_p->u.cls.u1.iterator_kind;
if (iterator_kind == ECMA_ITERATOR_KEYS)
{
/* 12. */
return ecma_create_iter_result_object (ecma_make_length_value (index), ECMA_VALUE_FALSE);
}
/* 14. */
ecma_value_t get_value = ecma_op_object_get_by_index (array_object_p, index);
/* 15. */
if (ECMA_IS_VALUE_ERROR (get_value))
{
return get_value;
}
ecma_value_t result;
/* 16. */
if (iterator_kind == ECMA_ITERATOR_VALUES)
{
result = ecma_create_iter_result_object (get_value, ECMA_VALUE_FALSE);
}
else
{
/* 17.a */
JERRY_ASSERT (iterator_kind == ECMA_ITERATOR_ENTRIES);
/* 17.b */
ecma_value_t entry_array_value;
entry_array_value = ecma_create_array_from_iter_element (get_value, ecma_make_length_value (index));
result = ecma_create_iter_result_object (entry_array_value, ECMA_VALUE_FALSE);
ecma_free_value (entry_array_value);
}
ecma_free_value (get_value);
return result;
} /* ecma_builtin_array_iterator_prototype_object_next */
/**
* Dispatcher of the built-in's routines
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
ecma_value_t
ecma_builtin_array_iterator_prototype_dispatch_routine (uint8_t builtin_routine_id, /**< built-in routine identifier */
ecma_value_t this_arg, /**< 'this' argument value */
const ecma_value_t arguments_list_p[], /**< list of arguments
* passed to routine */
uint32_t arguments_number) /**< length of arguments' list */
{
JERRY_UNUSED_2 (arguments_list_p, arguments_number);
switch (builtin_routine_id)
{
case ECMA_ARRAY_ITERATOR_PROTOTYPE_OBJECT_NEXT:
{
return ecma_builtin_array_iterator_prototype_object_next (this_arg);
}
default:
{
JERRY_UNREACHABLE ();
}
}
} /* ecma_builtin_array_iterator_prototype_dispatch_routine */
/**
* @}
* @}
* @}
*/
#endif /* JERRY_ESNEXT */
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