Implement the spread operator for array initialization (#3265)

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
2019-11-04 16:36:58 +01:00
parent fc3cfc4fdc
commit 6f83da4c0b
12 changed files with 417 additions and 10 deletions
@@ -0,0 +1,88 @@
+/* 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-spread-object.h"
+#include "ecma-globals.h"
+#include "ecma-helpers.h"
+#include "ecma-objects.h"
+
+/** \addtogroup ecma ECMA
+ * @{
+ *
+ * \addtogroup ecmaspreadeanobject ECMA Spread object related routines
+ * @{
+ */
+
+/**
+ * Spread object creation operation.
+ *
+ * @return pseudo array object as an ecma value
+ *         Returned value must be freed with ecma_free_value
+ */
+ecma_value_t
+ecma_op_create_spread_object (ecma_value_t element) /**< value to spread */
+{
+  ecma_object_t *object_p = ecma_create_object (NULL,
+                                                sizeof (ecma_extended_object_t),
+                                                ECMA_OBJECT_TYPE_PSEUDO_ARRAY);
+
+  ecma_extended_object_t *ext_object_p = (ecma_extended_object_t *) object_p;
+  ext_object_p->u.pseudo_array.type = ECMA_PSEUDO_SPREAD_OBJECT;
+  ext_object_p->u.pseudo_array.u2.spread_value = ecma_copy_value_if_not_object (element);
+
+  return ecma_make_object_value (object_p);
+} /* ecma_op_create_spread_object */
+
+/**
+ * Spread object creation operation.
+ *
+ * @return true - if the argument is a spread object
+ *         false, otherwise
+ */
+bool
+ecma_op_is_spread_object (ecma_value_t value) /**< value to check */
+{
+  if (ecma_is_value_object (value))
+  {
+    ecma_object_t *object_p = ecma_get_object_from_value (value);
+
+    if (ecma_get_object_type (object_p) == ECMA_OBJECT_TYPE_PSEUDO_ARRAY)
+    {
+      ecma_extended_object_t *ext_object_p = (ecma_extended_object_t *) object_p;
+      return ext_object_p->u.pseudo_array.type == ECMA_PSEUDO_SPREAD_OBJECT;
+    }
+  }
+
+  return false;
+} /* ecma_op_is_spread_object */
+
+/**
+ * Get the referenced element by the spread object
+ *
+ * @return element referenced by the spread object as an ecma-value
+ */
+ecma_value_t
+ecma_op_spread_object_get_spreaded_element (ecma_object_t *object_p) /**< spread object */
+{
+  JERRY_ASSERT (ecma_op_is_spread_object (ecma_make_object_value (object_p)));
+
+  ecma_extended_object_t *ext_object_p = (ecma_extended_object_t *) object_p;
+  return ecma_copy_value (ext_object_p->u.pseudo_array.u2.spread_value);
+} /* ecma_op_spread_object_get_spreaded_element */
+
+/**
+ * @}
+ * @}
+ */
@@ -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_SPREAD_OBJECT_H
+#define ECMA_SPREAD_OBJECT_H
+
+#include "ecma-globals.h"
+
+/** \addtogroup ecma ECMA
+ * @{
+ *
+ * \addtogroup ecmaspreadobject ECMA Spread object related routines
+ * @{
+ */
+
+ecma_value_t
+ecma_op_create_spread_object (ecma_value_t arg);
+
+bool
+ecma_op_is_spread_object (ecma_value_t value);
+
+ecma_value_t
+ecma_op_spread_object_get_spreaded_element (ecma_object_t *object_p);
+
+/**
+ * @}
+ * @}
+ */
+
+#endif /* !ECMA_SPREAD_OBJECT_H */