Improve arguments object (#4145)

- Enhancement: Arguments object properties are now lazy instantiated - Bugfix: Mapped arguments object instantiated properties cannot be lcached - Bugfix: Mapped arguments should be constructed even if 0 formal parameters or arguments are provided - Update: remove 'caller' property of unmapped arguments object JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
2020-09-28 15:57:58 +02:00
parent 32de38198a
commit 75385a6045
14 changed files with 943 additions and 591 deletions
@@ -0,0 +1,45 @@
+/* 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_ARGUMENTS_OBJECT_H
+#define ECMA_ARGUMENTS_OBJECT_H
+
+#include "ecma-globals.h"
+#include "ecma-helpers.h"
+#include "vm-defines.h"
+
+void
+ecma_op_create_arguments_object (ecma_object_t *func_obj_p, ecma_object_t *lex_env_p,
+                                 vm_frame_ctx_shared_args_t *shared_p);
+
+ecma_value_t
+ecma_op_arguments_object_delete (ecma_object_t *object_p, ecma_string_t *property_name_p, bool is_throw);
+ecma_value_t
+ecma_op_arguments_object_define_own_property (ecma_object_t *object_p, ecma_string_t *property_name_p,
+                                              const ecma_property_descriptor_t *property_desc_p);
+
+ecma_property_t *
+ecma_op_arguments_object_try_to_lazy_instantiate_property (ecma_object_t *object_p,
+                                                           ecma_string_t *property_name_p);
+
+void
+ecma_op_arguments_object_list_lazy_property_names (ecma_object_t *obj_p,
+                                                   ecma_collection_t *prop_names_p,
+                                                   ecma_property_counter_t *prop_counter_p);
+
+ecma_string_t *
+ecma_op_arguments_object_get_formal_parameter (ecma_mapped_arguments_t *mapped_arguments_p,
+                                               uint32_t index);
+#endif /* !ECMA_ARGUMENTS_OBJECT_H */