Function recreateMatchingLViews

packages/core/src/render3/hmr.ts:166–205

* Finds all LViews matching a specific component definition and recreates them. * @param importMeta `import.meta` information. * @param id HMR ID of the component. * @param oldDef Component definition to search for. * @param rootLView View from which to start the search.

(
  importMeta: ImportMetaExtended | null,
  id: string | null,
  newDef: ComponentDef<unknown>,
  oldDef: ComponentDef<unknown>,
  rootLView: LView,
)

 * @param rootLView View from which to start the search.
 */
function recreateMatchingLViews(
  importMeta: ImportMetaExtended | null,
  id: string | null,
  newDef: ComponentDef<unknown>,
  oldDef: ComponentDef<unknown>,
  rootLView: LView,
): void {
  ngDevMode &&
    assertDefined(
      oldDef.tView,
      'Expected a component definition that has been instantiated at least once',
    );

  const tView = rootLView[TVIEW];

  // Use `tView` to match the LView since `instanceof` can
  // produce false positives when using inheritance.
  if (tView === oldDef.tView) {
    ngDevMode && assertComponentDef(oldDef.type);
    recreateLView(importMeta, id, newDef, oldDef, rootLView);
    return;
  }

  for (let i = HEADER_OFFSET; i < tView.bindingStartIndex; i++) {
    const current = rootLView[i];

    if (isLContainer(current)) {
      // The host can be an LView if a component is injecting `ViewContainerRef`.
      if (isLView(current[HOST])) {
        recreateMatchingLViews(importMeta, id, newDef, oldDef, current[HOST]);
      }

      for (let j = CONTAINER_HEADER_OFFSET; j < current.length; j++) {
        recreateMatchingLViews(importMeta, id, newDef, oldDef, current[j]);
      }
    } else if (isLView(current)) {
      recreateMatchingLViews(importMeta, id, newDef, oldDef, current);
    }
  }
}

/**
 * Removes any cached renderers from the factory for the provided type.