Function getInjectionTokens

packages/core/src/render3/util/discovery_utils.ts:155–176

(element: Element)

 * @param element Element for which the injection tokens should be retrieved.
 */
export function getInjectionTokens(element: Element): any[] {
  const context = getLContext(element)!;
  const lView = context ? context.lView : null;
  if (lView === null) return [];
  const tView = lView[TVIEW];
  const tNode = tView.data[context.nodeIndex] as TNode;
  const providerTokens: any[] = [];
  const startIndex = tNode.providerIndexes & TNodeProviderIndexes.ProvidersStartIndexMask;
  const endIndex = tNode.directiveEnd;
  for (let i = startIndex; i < endIndex; i++) {
    let value = tView.data[i];
    if (isDirectiveDefHack(value)) {
      // The fact that we sometimes store Type and sometimes DirectiveDef in this location is a
      // design flaw.  We should always store same type so that we can be monomorphic. The issue
      // is that for Components/Directives we store the def instead the type. The correct behavior
      // is that we should always be storing injectable type in this location.
      value = value.type;
    }
    providerTokens.push(value);
  }
  return providerTokens;
}

/**
 * Retrieves directive instances associated with a given DOM node. Does not include