Implement Object.property.hasOwnProperty

JerryScript-DCO-1.0-Signed-off-by: Peter Gal [email protected]

Author: galpeter

jerry-core/ecma/builtin-objects/ecma-builtin-object-prototype.cpp

@@ -173,7 +173,50 @@ static ecma_completion_value_t
 ecma_builtin_object_prototype_object_has_own_property (ecma_value_t this_arg, /**< this argument */
                                                        ecma_value_t arg) /**< first argument */
 {
-  ECMA_BUILTIN_CP_UNIMPLEMENTED (this_arg, arg);
+  ecma_completion_value_t return_value = ecma_make_empty_completion_value ();
+
+  /* 1. */
+  ECMA_TRY_CATCH (to_string_val,
+                  ecma_op_to_string (arg),
+                  return_value);
+
+  /* 2. */
+  ECMA_TRY_CATCH (obj_val,
+                  ecma_op_to_object (this_arg),
+                  return_value);
+
+  ecma_string_t *property_name_string_p = ecma_get_string_from_value (to_string_val);
+
+  ecma_object_t *obj_p = ecma_get_object_from_value (obj_val);
+
+  /* 3. */
+  ecma_property_t *property_p = ecma_op_object_get_own_property (obj_p, property_name_string_p);
+
+  if (property_p == NULL)
+  {
+    return_value = ecma_make_simple_completion_value (ECMA_SIMPLE_VALUE_FALSE);
+  }
+  else if (property_p->type == ECMA_PROPERTY_NAMEDDATA)
+  {
+    ecma_value_t property_value = ecma_get_named_data_property_value (property_p);
+
+    return_value = ecma_make_simple_completion_value (!ecma_is_value_undefined (property_value)
+                                                      ? ECMA_SIMPLE_VALUE_TRUE
+                                                      : ECMA_SIMPLE_VALUE_FALSE);
+  }
+  else if (property_p->type == ECMA_PROPERTY_NAMEDACCESSOR)
+  {
+    ecma_object_t *property_object = ecma_get_named_accessor_property_getter (property_p);
+
+    return_value = ecma_make_simple_completion_value (property_object != NULL
+                                                      ? ECMA_SIMPLE_VALUE_TRUE
+                                                      : ECMA_SIMPLE_VALUE_FALSE);
+  }
+  ECMA_FINALIZE (obj_val)
+
+  ECMA_FINALIZE (to_string_val)
+
+  return return_value;
 } /* ecma_builtin_object_prototype_object_has_own_property */
 
 /**

tests/jerry/object_prototype_hasownproperty.js

@@ -0,0 +1,53 @@
+// Copyright 2015 Samsung Electronics Co., Ltd.
+// Copyright 2015 University of Szeged.
+//
+// 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.
+
+var obj1 = {};
+obj1.prop = "hi";
+
+assert (obj1.hasOwnProperty('prop') === true);
+assert (obj1.hasOwnProperty('NO_PROP') === false);
+
+
+// Test if the toString fails.
+try {
+  obj1.hasOwnProperty({toString: function() { throw new ReferenceError ("foo"); }});
+
+  assert (false);
+} catch (e) {
+  assert (e.message === "foo");
+  assert (e instanceof ReferenceError);
+}
+
+// Test if the toObject fails.
+
+var obj2;
+try {
+  obj2.hasOwnProperty("fail");
+
+  assert (false);
+} catch (e) {
+  assert (e instanceof TypeError);
+}
+
+var obj_undef;
+var obj3 = {};
+Object.defineProperty(obj3, 'Test', { 'get' : function () {throw new ReferenceError ("foo"); } });
+assert (obj3.hasOwnProperty("Test") === true);
+
+Object.defineProperty(obj3, 'Test2', { 'get' : function () { return 0/0; } });
+assert (obj3.hasOwnProperty("Test2") === true);
+
+Object.defineProperty(obj3, 'Test4', { 'get' : function () { return obj_undef; } });
+assert (obj3.hasOwnProperty("Test4") === true);