Implement DataView builtin (#2804)

New API functions:
 - jerry_create_dataview
 - jerry_value_is_dataview
 - jerry_get_dataview_buffer

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu

jerry-core/ecma/operations/ecma-dataview-object.h

@@ -0,0 +1,42 @@
+/* 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.
+ */
+
+#ifndef ECMA_DATAVIEW_OBJECT_H
+#define ECMA_DATAVIEW_OBJECT_H
+
+#include "ecma-globals.h"
+
+#if ENABLED (JERRY_ES2015_BUILTIN_DATAVIEW)
+
+/** \addtogroup ecma ECMA
+ * @{
+ *
+ * \addtogroup ecmadataviewobject ECMA builtin DataView helper functions
+ * @{
+ */
+
+ecma_value_t ecma_op_dataview_create (const ecma_value_t *arguments_list_p, ecma_length_t arguments_list_len);
+ecma_dataview_object_t *ecma_op_dataview_get_object (ecma_value_t this_arg);
+ecma_value_t ecma_op_dataview_get_set_view_value (ecma_value_t view, ecma_value_t request_index,
+                                                  ecma_value_t little_endian, ecma_value_t value_to_set, uint8_t type);
+
+/**
+ * @}
+ * @}
+ */
+
+#endif /* ENABLED (JERRY_ES2015_BUILTIN_DATAVIEW */
+
+#endif /* !ECMA_DATAVIEW_OBJECT_H */