Added ES5 15.2.3.2 Object.getPrototypeOf.

Review URL: http://codereview.chromium.org/523124

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3555 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/messages.js

@@ -178,7 +178,8 @@ function FormatMessage(message) {
       result_not_primitive:         "Result of %0 must be a primitive, was %1",
       invalid_json:                 "String '%0' is not valid JSON",
       circular_structure:           "Converting circular structure to JSON",
-      object_keys_non_object:       "Object.keys called on non-object"
+      object_keys_non_object:       "Object.keys called on non-object",
+      object_get_prototype_non_object: "Object.getPrototypeOf called on non-object"
     };
   }
   var format = kMessages[message.type];

src/v8natives.js

@@ -448,6 +448,15 @@ function DefineOwnProperty(obj, p, desc, should_throw) {
 }
 
 
+// ES5 section 15.2.3.2.
+function ObjectGetPrototypeOf(obj) {
+ if (!IS_OBJECT(obj) && !IS_FUNCTION(obj)) {
+   throw MakeTypeError("object_get_prototype_non_object", [obj]);
+ }
+ return obj.__proto__;
+}
+
+
 // ES5 section 15.2.3.5.
 function ObjectCreate(proto, properties) {
   if (!IS_OBJECT(proto) && !IS_NULL(proto)) {
@@ -512,7 +521,8 @@ function SetupObject() {
   ));
   InstallFunctions($Object, DONT_ENUM, $Array(
     "keys", ObjectKeys,
-    "create", ObjectCreate
+    "create", ObjectCreate,
+    "getPrototypeOf", ObjectGetPrototypeOf
   ));
 }
 

test/es5conform/es5conform.status

@@ -38,7 +38,6 @@ chapter13: UNIMPLEMENTED
 chapter14: UNIMPLEMENTED
 chapter15/15.1: UNIMPLEMENTED
 chapter15/15.2/15.2.3/15.2.3.1: UNIMPLEMENTED
-chapter15/15.2/15.2.3/15.2.3.2: UNIMPLEMENTED
 chapter15/15.2/15.2.3/15.2.3.3: UNIMPLEMENTED
 chapter15/15.2/15.2.3/15.2.3.4: UNIMPLEMENTED
 chapter15/15.2/15.2.3/15.2.3.5: UNIMPLEMENTED
@@ -51,6 +50,9 @@ chapter15/15.2/15.2.3/15.2.3.11: UNIMPLEMENTED
 chapter15/15.2/15.2.3/15.2.3.12: UNIMPLEMENTED
 chapter15/15.2/15.2.3/15.2.3.13: UNIMPLEMENTED
 
+# Object.getPrototypeOf
+chapter15/15.2/15.2.3/15.2.3.2: PASS
+
 # Object.keys
 chapter15/15.2/15.2.3/15.2.3.14: PASS
 

test/mjsunit/get-prototype-of.js

@@ -0,0 +1,68 @@
+// Copyright 2010 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+function TryGetPrototypeOfNonObject(x) {
+  var caught = 0;
+  try {
+      Object.getPrototypeOf(x);
+  } catch (e) {
+    caught = e;
+  }
+
+  assertTrue(caught instanceof TypeError);
+};
+
+function GetPrototypeOfObject(x) {
+  assertDoesNotThrow(Object.getPrototypeOf(x));
+  assertNotNull(Object.getPrototypeOf(x));
+  assertEquals(Object.getPrototypeOf(x), x.__proto__);
+}
+
+function F(){};
+
+// Non object
+var x = 10;
+
+// Object
+var y = new F();
+
+// Make sure that TypeError exceptions are thrown when non-objects are passed
+// as argument
+TryGetPrototypeOfNonObject(0);
+TryGetPrototypeOfNonObject(null);
+TryGetPrototypeOfNonObject('Testing');
+TryGetPrototypeOfNonObject(x);
+
+// Make sure the real objects have this method and that it returns the
+// actual prototype object. Also test for Functions and RegExp.
+GetPrototypeOfObject(this);
+GetPrototypeOfObject(y);
+GetPrototypeOfObject({x:5});
+GetPrototypeOfObject(F);
+GetPrototypeOfObject(RegExp);
+

tools/presubmit.py

@@ -221,7 +221,7 @@ class CppLintProcessor(SourceFileProcessor):
 
 
 COPYRIGHT_HEADER_PATTERN = re.compile(
-    r'Copyright [\d-]*200[8-9] the V8 project authors. All rights reserved.')
+    r'Copyright [\d-]*20[0-1][0-9] the V8 project authors. All rights reserved.')
 
 class SourceProcessor(SourceFileProcessor):
   """