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// Objects with same shape but different getter/setter.
function testOwnProp() {
var count = 0;
var objects = [{get x() { count += 1; }, set x(v) { count += 2; }},
{get x() { count += 3; }, set x(v) { count += 4; }},
{get x() { count += 5; }, set x(v) { count += 6; }}];
assertEq(shapeOf(objects[0]), shapeOf(objects[1]));
assertEq(shapeOf(objects[0]), shapeOf(objects[2]));
for (var i = 0; i < 150; i++) {
var o = objects[i % objects.length];
o.x++;
}
assertEq(count, 1050);
}
testOwnProp();
// Ensure optimized TypedArray length properly deoptimizes when the getter is
// redefined.
function testTypedArrayLength() {
var ta = new Int32Array(10);
var lengthHolder = Object.getPrototypeOf(Int32Array.prototype);
for (var i = 0; i < 150; i++) {
assertEq(ta.length, i <= 100 ? 10 : (i <= 130 ? "foo" : "bar"));
assertEq(ta.byteLength, 40);
assertEq(ta.byteOffset, 0);
if (i === 100) {
var desc = Object.getOwnPropertyDescriptor(lengthHolder, "length");
desc.get = () => "foo";
Object.defineProperty(lengthHolder, "length", desc);
}
if (i === 130) {
var desc = Object.getOwnPropertyDescriptor(lengthHolder, "length");
desc.get = () => "bar";
Object.defineProperty(lengthHolder, "length", desc);
}
}
}
testTypedArrayLength();
// Native accessors on the global object. Redefine a few times and ensure the
// right function is called. Use |useWindowProxy: false| to allow optimizing all
// native getters.
function testGlobalProp() {
var g = newGlobal({useWindowProxy: false});
g.evaluate("" + function test() {
var arr = [Math, Object];
var expected = 0;
for (var i = 0; i < 150; i++) {
assertEq(timesAccessed, i <= 100 ? i + 1 : (i > 130 ? Infinity : NaN));
if (i === 100) {
var desc = Object.getOwnPropertyDescriptor(this, "timesAccessed");
desc.get = Math.abs;
Object.defineProperty(this, "timesAccessed", desc);
}
if (i === 130) {
var desc = Object.getOwnPropertyDescriptor(this, "timesAccessed");
desc.get = Math.min;
Object.defineProperty(this, "timesAccessed", desc);
}
}
});
g.evaluate("test()");
}
testGlobalProp();