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Add indexOf and lastIndexOf function to typedArray (#2938)

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The algorithm's are based on ECMA-262 v6, 22.2.3.13, 22.2.3.16

Co-authored-by: Tibor Dusnoki tdusnoki@inf.u-szeged.hu
JerryScript-DCO-1.0-Signed-off-by: Adam Szilagyi aszilagy@inf.u-szeged.hu
This commit is contained in:
Szilagyi Adam
2019-08-30 14:01:30 +02:00
committed by Dániel Bátyai
parent e3c1451d42
commit f0578b2c25
10 changed files with 360 additions and 72 deletions
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jerry-core/ecma/builtin-objects/ecma-builtin-helpers.c
+24 -7
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@@ -314,7 +314,7 @@ ecma_builtin_helper_object_get_properties (ecma_object_t *obj_p, /**< object */
* If the index is negative, it is used as the offset from the end of the array,
* to compute normalized index.
* If the index is greater than the length of the array, the normalized index will be the length of the array.
*
* If is_last_index_of is true, then we use the method in ECMA-262 v6, 22.2.3.16 to compute the normalized index.
* See also:
* ECMA-262 v5, 15.4.4.10 steps 5-6, 7 (part 2) and 8
* ECMA-262 v5, 15.4.4.12 steps 5-6
@@ -326,12 +326,15 @@ ecma_builtin_helper_object_get_properties (ecma_object_t *obj_p, /**< object */
* - The Array.prototype.splice routine.
* - The Array.prototype.indexOf routine.
* - The String.prototype.slice routine.
* - The TypedArray.prototype.indexOf routine.
* - The TypedArray.prototype.lastIndexOf routine
*
* @return uint32_t - the normalized value of the index
*/
uint32_t
ecma_builtin_helper_array_index_normalize (ecma_number_t index, /**< index */
uint32_t length) /**< array's length */
uint32_t length, /**< array's length */
bool is_last_index_of) /**< true - normalize for lastIndexOf method*/
{
uint32_t norm_index;
@@ -344,7 +347,14 @@ ecma_builtin_helper_array_index_normalize (ecma_number_t index, /**< index */
}
else if (ecma_number_is_infinity (index))
{
norm_index = ecma_number_is_negative (index) ? 0 : length;
if (is_last_index_of)
{
norm_index = ecma_number_is_negative (index) ? (uint32_t) -1 : length - 1;
}
else
{
norm_index = ecma_number_is_negative (index) ? 0 : length;
}
}
else
{
@@ -352,20 +362,27 @@ ecma_builtin_helper_array_index_normalize (ecma_number_t index, /**< index */
{
ecma_number_t index_neg = -index;
if (index_neg > length)
if (is_last_index_of)
{
norm_index = 0;
norm_index = length - ecma_number_to_uint32 (index_neg);
}
else
{
norm_index = length - ecma_number_to_uint32 (index_neg);
if (index_neg > length)
{
norm_index = 0;
}
else
{
norm_index = length - ecma_number_to_uint32 (index_neg);
}
}
}
else
{
if (index > length)
{
norm_index = length;
norm_index = is_last_index_of ? length - 1 : length;
}
else
{