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[ES2015 profile]add TypedArray intrinsic object (#1507)

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* add %TypedArray% intrinsic object
* implement Int8Array
* will implement other types and prototype functions
in the following patches.

JerryScript-DCO-1.0-Signed-off-by: Zidong Jiang zidong.jiang@intel.com
This commit is contained in:
Zidong Jiang
2017-01-13 18:04:34 +08:00
committed by László Langó
parent 177c30de78
commit adfe61b4ed
43 changed files with 2327 additions and 119 deletions
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jerry-core/ecma/operations/ecma-arraybuffer-object.c
+52 -2
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@@ -81,8 +81,7 @@ ecma_op_create_arraybuffer_object (const ecma_value_t *arguments_list_p, /**< li
* extend_part
* data buffer
*
* @return ecma value
* Returned value must be freed with ecma_free_value
* @return ecma_object_t *
*/
ecma_object_t *
ecma_arraybuffer_new_object (ecma_length_t length) /**< length of the arraybuffer */
@@ -95,9 +94,60 @@ ecma_arraybuffer_new_object (ecma_length_t length) /**< length of the arraybuffe
ecma_extended_object_t *ext_object_p = (ecma_extended_object_t *) object_p;
ext_object_p->u.class_prop.class_id = LIT_MAGIC_STRING_ARRAY_BUFFER_UL;
ext_object_p->u.class_prop.u.length = length;
lit_utf8_byte_t *buf = (lit_utf8_byte_t *) (ext_object_p + 1);
memset (buf, 0, length);
return object_p;
} /* ecma_arraybuffer_new_object */
/**
* Helper function: create arraybuffer object by cloning another arraybuffer
*
* See also: ES2015 24.1.1.4
*
* @return ecma_object_t *
*/
ecma_object_t *
ecma_arraybuffer_new_object_by_clone_arraybuffer (ecma_object_t *src_p, /**< the src arraybuffer */
ecma_length_t offset) /**< the offset */
{
ecma_length_t length = ecma_arraybuffer_get_length (src_p);
JERRY_ASSERT (offset <= length);
ecma_length_t clone_length = length - offset;
ecma_object_t *dst_p = ecma_arraybuffer_new_object (clone_length);
lit_utf8_byte_t *src_buf = ecma_arraybuffer_get_buffer (src_p);
lit_utf8_byte_t *dst_buf = ecma_arraybuffer_get_buffer (dst_p);
memcpy (dst_buf, src_buf + offset, clone_length);
return dst_p;
} /* ecma_arraybuffer_new_object_by_clone_arraybuffer */
/**
* Helper function: check if the target is ArrayBuffer
*
*
* See also: ES2015 24.1.1.4
*
* @return bool True if it is ArrayBuffer
* Flase if it is not Object or it is not ArrayBuffer
*/
bool
ecma_is_arraybuffer (ecma_value_t target) /**< the target value */
{
if (!ecma_is_value_object (target))
{
return false;
}
ecma_object_t *obj_p = ecma_get_object_from_value (target);
lit_magic_string_id_t class_id = ecma_object_get_class_name (obj_p);
return class_id == LIT_MAGIC_STRING_ARRAY_BUFFER_UL;
} /* ecma_is_arraybuffer */
/**
* Helper function: return the length of the buffer inside the arraybuffer object
*