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Bug 814562 - Implement clear() on WeakMaps

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This commit is contained in:
Saurabh Anand
2012-12-09 04:27:58 +05:30
parent 670698b7ec
commit eee2e92c34
2 changed files with 65 additions and 0 deletions
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23
js/src/jsweakmap.cpp
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@@ -171,6 +171,28 @@ WeakMap_has(JSContext *cx, unsigned argc, Value *vp)
return CallNonGenericMethod<IsWeakMap, WeakMap_has_impl>(cx, args);
}
JS_ALWAYS_INLINE bool
WeakMap_clear_impl(JSContext *cx, CallArgs args)
{
JS_ASSERT(IsWeakMap(args.thisv()));
// We can't js_delete the weakmap because the data gathered during GC
// is used by the Cycle Collector
if (ObjectValueMap *map = GetObjectMap(&args.thisv().toObject())) {
map->clear();
}
args.rval().setUndefined();
return true;
}
JSBool
WeakMap_clear(JSContext *cx, unsigned argc, Value *vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
return CallNonGenericMethod<IsWeakMap, WeakMap_clear_impl>(cx, args);
}
JS_ALWAYS_INLINE bool
WeakMap_get_impl(JSContext *cx, CallArgs args)
{
@@ -374,6 +396,7 @@ static JSFunctionSpec weak_map_methods[] = {
JS_FN("get", WeakMap_get, 2, 0),
JS_FN("delete", WeakMap_delete, 1, 0),
JS_FN("set", WeakMap_set, 2, 0),
JS_FN("clear", WeakMap_clear, 0, 0),
JS_FS_END
};