[Isolates] Merge crankshaft (r5922 from bleeding_edge).

test/mjsunit/accessors-on-global-object.js

+// 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.
+
+// Test that installing a getter on the global object instead of a
+// normal property works.
+
+var x = 0;
+
+function getX() { return x; }
+
+for (var i = 0; i < 10; i++) {
+  assertEquals(i < 5 ? 0 : 42, getX());
+  if (i == 4) __defineGetter__("x", function() { return 42; });
+}
+
+
+// Test that installing a setter on the global object instead of a
+// normal property works.
+
+var y = 0;
+var setter_y;
+
+function setY(value) { y = value; }
+
+for (var i = 0; i < 10; i++) {
+  setY(i);
+  assertEquals(i < 5 ? i : 2 * i, y);
+  if (i == 4) {
+    __defineSetter__("y", function(value) { setter_y = 2 * value; });
+    __defineGetter__("y", function() { return setter_y; });
+  }
+}
+
+
+// Test that replacing a getter with a normal property works as
+// expected.
+
+__defineGetter__("z", function() { return 42; });
+
+function getZ() { return z; }
+
+for (var i = 0; i < 10; i++) {
+  assertEquals(i < 5 ? 42 : 0, getZ());
+  if (i == 4) {
+    delete z;
+    var z = 0;
+  }
+}