Implement Symbol.unscopables (#3405)

Added a new property for Array.prototype based on ECMA-262 v6, 22.1.3.31 Also upgraded the HasBinding operation with ECMA-262 v6, 8.1.1.2.1 steps 7-9 JerryScript-DCO-1.0-Signed-off-by: Adam Szilagyi aszilagy@inf.u-szeged.hu
2019-12-19 16:34:23 +01:00
parent 52616f7d8c
commit 7bfbc701d8
7 changed files with 294 additions and 33 deletions
@@ -0,0 +1,28 @@
+/* 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-builtin-helpers.h"
+#include "ecma-builtins.h"
+
+#if ENABLED (JERRY_ES2015)
+
+#define ECMA_BUILTINS_INTERNAL
+#include "ecma-builtins-internal.h"
+
+#define BUILTIN_INC_HEADER_NAME "ecma-builtin-array-prototype-unscopables.inc.h"
+#define BUILTIN_UNDERSCORED_ID array_prototype_unscopables
+#include "ecma-builtin-internal-routines-template.inc.h"
+
+#endif /* ENABLED (JERRY_ES2015) */
@@ -0,0 +1,55 @@
+/* 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.
+ */
+
+/*
+ * Array.prototype[@@unscopables] built-in description
+ */
+
+#include "ecma-builtin-helpers-macro-defines.inc.h"
+
+
+#if ENABLED (JERRY_ES2015)
+
+SIMPLE_VALUE (LIT_MAGIC_STRING_COPY_WITHIN,
+              ECMA_VALUE_TRUE,
+              ECMA_PROPERTY_CONFIGURABLE_ENUMERABLE_WRITABLE)
+
+SIMPLE_VALUE (LIT_MAGIC_STRING_ENTRIES,
+              ECMA_VALUE_TRUE,
+              ECMA_PROPERTY_CONFIGURABLE_ENUMERABLE_WRITABLE)
+
+SIMPLE_VALUE (LIT_MAGIC_STRING_FILL,
+              ECMA_VALUE_TRUE,
+              ECMA_PROPERTY_CONFIGURABLE_ENUMERABLE_WRITABLE)
+
+SIMPLE_VALUE (LIT_MAGIC_STRING_FIND,
+              ECMA_VALUE_TRUE,
+              ECMA_PROPERTY_CONFIGURABLE_ENUMERABLE_WRITABLE)
+
+SIMPLE_VALUE (LIT_MAGIC_STRING_FIND_INDEX,
+              ECMA_VALUE_TRUE,
+              ECMA_PROPERTY_CONFIGURABLE_ENUMERABLE_WRITABLE)
+
+SIMPLE_VALUE (LIT_MAGIC_STRING_KEYS,
+              ECMA_VALUE_TRUE,
+              ECMA_PROPERTY_CONFIGURABLE_ENUMERABLE_WRITABLE)
+
+SIMPLE_VALUE (LIT_MAGIC_STRING_VALUES,
+              ECMA_VALUE_TRUE,
+              ECMA_PROPERTY_CONFIGURABLE_ENUMERABLE_WRITABLE)
+
+#endif /* ENABLED (JERRY_ES2015) */
+
+#include "ecma-builtin-helpers-macro-undefs.inc.h"
@@ -29,6 +29,13 @@ OBJECT_VALUE (LIT_MAGIC_STRING_CONSTRUCTOR,
              ECMA_BUILTIN_ID_ARRAY,
              ECMA_PROPERTY_CONFIGURABLE_WRITABLE)

+#if ENABLED (JERRY_ES2015)
+/* ECMA-262 v6, 22.1.3.31 */
+OBJECT_VALUE (LIT_GLOBAL_SYMBOL_UNSCOPABLES,
+              ECMA_BUILTIN_ID_ARRAY_PROTOTYPE_UNSCOPABLES,
+              ECMA_PROPERTY_FLAG_CONFIGURABLE)
+#endif /* ENABLED (JERRY_ES2015) */
+
 /* Number properties:
 *  (property name, object pointer getter) */

@@ -510,6 +510,13 @@ BUILTIN_ROUTINE (ECMA_BUILTIN_ID_WEAKSET,

 #if ENABLED (JERRY_ES2015)

+/* The Array.prototype[@@unscopables] object */
+BUILTIN (ECMA_BUILTIN_ID_ARRAY_PROTOTYPE_UNSCOPABLES,
+         ECMA_OBJECT_TYPE_GENERAL,
+         ECMA_BUILTIN_ID__COUNT,
+         true,
+         array_prototype_unscopables)
+
 /* The Symbol prototype object (ECMA-262 v6, 19.4.2.7) */
 BUILTIN (ECMA_BUILTIN_ID_SYMBOL_PROTOTYPE,
         ECMA_OBJECT_TYPE_GENERAL,