js_free_symbol(void *priv, PRHashEntry *he, uintN flag)
{
JSContext *cx;
JSSymbol *sym, **sp;
JSProperty *prop;
cx = priv;
PR_ASSERT(JS_IS_LOCKED(cx));
sym = (JSSymbol *)he;
prop = sym->entry.value;
if (prop) {
sym->entry.value = NULL;
prop = js_DropProperty(cx, prop);
if (prop) {
for (sp = &prop->symbols; *sp; sp = &(*sp)->next) {
if (*sp == sym) {
*sp = sym->next;
if (!*sp)
break;
}
}
sym->next = NULL;
}
}
if (flag == HT_FREE_ENTRY) {
if (!JSVAL_IS_INT(sym_id(sym)))
JS_LOCK_VOID(cx, js_DropAtom(cx, sym_atom(sym)));
JS_free(cx, he);
}
}
JSBool
js_DeleteProperty2(JSContext *cx, JSObject *obj, JSProperty *prop, jsval id,
jsval *rval)
{
#if JS_HAS_PROP_DELETE
JSRuntime *rt;
JSString *str;
JSScope *scope;
JSObject *proto;
PRHashNumber hash;
JSSymbol *sym;
rt = cx->runtime;
PR_ASSERT(JS_IS_RUNTIME_LOCKED(rt));
*rval = JSVERSION_IS_ECMA(cx->version) ? JSVAL_TRUE : JSVAL_VOID;
if (prop->flags & JSPROP_PERMANENT) {
if (JSVERSION_IS_ECMA(cx->version)) {
*rval = JSVAL_FALSE;
return JS_TRUE;
}
str = js_ValueToSource(cx, js_IdToValue(id));
if (str)
JS_ReportError(cx, "%s is permanent", JS_GetStringBytes(str));
return JS_FALSE;
}
if (!obj->map->clasp->delProperty(cx, obj, prop->id,
&prop->object->slots[prop->slot])) {
return JS_FALSE;
}
/* Handle old bug that treated empty string as zero index. */
CHECK_FOR_FUNNY_INDEX(id);
GC_POKE(cx, prop->object->slots[prop->slot]);
scope = (JSScope *)obj->map;
proto = scope->object;
if (proto == obj) {
/* The object has its own scope, so remove id if it was found here. */
if (prop->object == obj) {
/* Purge cache only if prop is not about to be destroyed. */
if (prop->nrefs != 1) {
PROPERTY_CACHE_FILL(cx, &rt->propertyCache, obj, id,
PROP_NOT_FOUND);
}
#if JS_HAS_OBJ_WATCHPOINT
if (prop->setter == js_watch_set) {
/*
* Keep the symbol around with null value in case of re-set.
* The watchpoint will hold the "deleted" property until it
* is removed by obj_unwatch or a native JS_ClearWatchPoint.
* See js_SetProperty for the re-set logic.
*/
for (sym = prop->symbols; sym; sym = sym->next) {
if (sym_id(sym) == id) {
sym->entry.value = NULL;
prop = js_DropProperty(cx, prop);
PR_ASSERT(prop);
return JS_TRUE;
}
}
}
#endif
scope->ops->remove(cx, scope, id);
}
proto = OBJ_GET_PROTO(obj);
if (!proto)
return JS_TRUE;
}
/* Search shared prototype scopes for an inherited property to hide. */
hash = js_HashValue(id);
do {
scope = (JSScope *)proto->map;
sym = scope->ops->lookup(cx, scope, id, hash);
if (sym) {
/* Add a null-valued symbol to hide the prototype property. */
scope = js_GetMutableScope(cx, obj);
if (!scope)
return JS_FALSE;
if (!scope->ops->add(cx, scope, id, NULL))
return JS_FALSE;
PROPERTY_CACHE_FILL(cx, &rt->propertyCache, obj, id,
PROP_NOT_FOUND);
return JS_TRUE;
}
proto = OBJ_GET_PROTO(proto);
} while (proto);
return JS_TRUE;
#else
jsval null = JSVAL_NULL;
return (js_SetProperty(cx, obj, id, &null) != NULL);
#endif
}
