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Add new API function

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Implemented 'jerry_is_array' and 'jerry_get_array_length' API functions.

JerryScript-DCO-1.0-Signed-off-by: László Langó llango.u-szeged@partner.samsung.com
This commit is contained in:
László Langó 2016-06-17 15:49:04 +02:00
parent 4091444016
commit cfa0c94697
3 changed files with 52 additions and 0 deletions
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2
jerry-core/jerry-api.h
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@ -185,6 +185,7 @@ jerry_string_t *jerry_create_string_sz (const jerry_char_t *, jerry_size_t);
*/
bool jerry_set_array_index_value (jerry_object_t *, jerry_length_t, jerry_value_t);
bool jerry_get_array_index_value (jerry_object_t *, jerry_length_t, jerry_value_t *);
uint32_t jerry_get_array_length (const jerry_object_t *);
/**
* Functions of 'jerry_string_t'
@ -196,6 +197,7 @@ jerry_size_t jerry_string_to_char_buffer (const jerry_string_t *, jerry_char_t *
/**
* General API functions of JS objects
*/
bool jerry_is_array (const jerry_object_t *);
bool jerry_is_constructor (const jerry_object_t *);
bool jerry_is_function (const jerry_object_t *);
bool jerry_add_object_field (jerry_object_t *, const jerry_char_t *, jerry_size_t, const jerry_value_t, bool);

48
jerry-core/jerry.c
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@ -590,6 +590,40 @@ jerry_get_array_index_value (jerry_object_t *array_obj_p, /**< array object */
return false;
} /* jerry_get_array_index_value */
/**
* Get length of an array object
*
* Note:
* Returns 0, if the given parameter is not an array object.
*
* @return length of the given array
*/
uint32_t
jerry_get_array_length (const jerry_object_t *object_p)
{
jerry_assert_api_available ();
if (!jerry_is_array (object_p))
{
return 0;
}
jerry_length_t length = 0;
ecma_string_t *magic_string_length_p = ecma_get_magic_string (LIT_MAGIC_STRING_LENGTH);
ecma_value_t len_value = ecma_op_object_get ((jerry_object_t *) object_p, magic_string_length_p);
ecma_deref_ecma_string (magic_string_length_p);
if (ecma_is_value_number (len_value))
{
length = ecma_number_to_uint32 (ecma_get_number_from_value (len_value));
}
ecma_free_value (len_value);
return length;
} /* jerry_get_array_length */
/**
* Create an error object
*
@ -757,6 +791,20 @@ jerry_dispatch_object_free_callback (ecma_external_pointer_t freecb_p, /**< poin
jerry_make_api_available ();
} /* jerry_dispatch_object_free_callback */
/**
* Check if the specified object is an array object.
*
* @return true - if the specified object is an array object,
* false - otherwise.
*/
bool
jerry_is_array (const jerry_object_t *object_p) /**< an object */
{
jerry_assert_api_available ();
return (ecma_get_object_type (object_p) == ECMA_OBJECT_TYPE_ARRAY);
} /* jerry_is_array */
/**
* Check if the specified object is a function object.
*

2
tests/unit/test-api.c
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@ -583,6 +583,8 @@ main (void)
// Test: Array Object API
jerry_object_t *array_obj_p = jerry_create_array_object (10);
JERRY_ASSERT (jerry_is_array (array_obj_p));
JERRY_ASSERT (jerry_get_array_length (array_obj_p) == 10);
jerry_value_t v_in = jerry_create_number_value (10.5);
jerry_set_array_index_value (array_obj_p, 5, v_in);