static JSValueRef JSNodeList_length(JSContextRef context, JSObjectRef thisObject, JSStringRef propertyName, JSValueRef* exception) { UNUSED_PARAM(propertyName); UNUSED_PARAM(exception); NodeList* nodeList = JSObjectGetPrivate(thisObject); ASSERT(nodeList); return JSValueMakeNumber(context, NodeList_length(nodeList)); }
extern Node* NodeList_item(NodeList* nodeList, unsigned index) { unsigned length = NodeList_length(nodeList); if (index >= length) return NULL; /* Linear search from tail -- good enough for our purposes here */ NodeLink* n = nodeList->parentNode->childNodesTail; unsigned i = 0; unsigned count = length - 1 - index; while (i < count) { ++i; n = n->prev; } return n->node; }