Function _queryAll

packages/core/src/debug/debug_node.ts:444–467

(
  parentElement: DebugElement,
  predicate: Predicate<DebugElement> | Predicate<DebugNode>,
  matches: DebugElement[] | DebugNode[],
  elementsOnly: boolean,
)

  elementsOnly: false,
): void;
function _queryAll(
  parentElement: DebugElement,
  predicate: Predicate<DebugElement> | Predicate<DebugNode>,
  matches: DebugElement[] | DebugNode[],
  elementsOnly: boolean,
) {
  const context = getLContext(parentElement.nativeNode)!;
  const lView = context ? context.lView : null;
  if (lView !== null) {
    const parentTNode = lView[TVIEW].data[context.nodeIndex] as TNode;
    _queryNodeChildren(
      parentTNode,
      lView,
      predicate,
      matches,
      elementsOnly,
      parentElement.nativeNode,
    );
  } else {
    // If the context is null, then `parentElement` was either created with Renderer2 or native DOM
    // APIs.
    _queryNativeNodeDescendants(parentElement.nativeNode, predicate, matches, elementsOnly);
  }
}

/**
 * Recursively match the current TNode against the predicate, and goes on with the next ones.