| /* |
| * Any copyright is dedicated to the Public Domain. |
| * http://creativecommons.org/licenses/publicdomain/ |
| */ |
| |
| /* A stock watcher function. */ |
| var watcherCount; |
| function watcher(id, old, newval) { |
| watcherCount++; |
| return newval; |
| } |
| |
| /* Create an object with a value property. */ |
| var o = { w:2, x:3 }; |
| |
| /* |
| * Place a watchpoint on the value property. The watchpoint structure holds |
| * the original JavaScript setter, and a pointer to the shape. |
| */ |
| o.watch('x', watcher); |
| |
| /* |
| * Put the object in dictionary mode, so that JSObject::putProperty will |
| * mutate its shapes instead of creating new ones. |
| */ |
| delete o.w; |
| |
| /* |
| * Replace the value property with a setter. |
| */ |
| var setterCount; |
| o.__defineSetter__('x', function() { setterCount++; }); |
| |
| /* |
| * Trigger the watchpoint. The watchpoint handler should run, and then the |
| * setter should run. |
| */ |
| watcherCount = setterCount = 0; |
| o.x = 4; |
| assertEq(watcherCount, 1); |
| assertEq(setterCount, 1); |
| |
| reportCompare(true, true); |