Function callHooks

packages/core/src/render3/hooks.ts:238–279

* Calls lifecycle hooks with their contexts, skipping init hooks if it's not * the first LView pass * * @param currentView The current view * @param arr The array in which the hooks are found * @param initPhaseState the current state of the init phase * @param currentNodeIndex 3 cases dependin

(
  currentView: LView,
  arr: HookData,
  initPhase: InitPhaseState,
  currentNodeIndex: number | null | undefined,
)

 * case, when executing select(number))
 */
function callHooks(
  currentView: LView,
  arr: HookData,
  initPhase: InitPhaseState,
  currentNodeIndex: number | null | undefined,
): void {
  ngDevMode &&
    assertEqual(
      isInCheckNoChangesMode(),
      false,
      'Hooks should never be run when in check no changes mode.',
    );
  const startIndex =
    currentNodeIndex !== undefined
      ? currentView[PREORDER_HOOK_FLAGS] & PreOrderHookFlags.IndexOfTheNextPreOrderHookMaskMask
      : 0;
  const nodeIndexLimit = currentNodeIndex != null ? currentNodeIndex : -1;
  const max = arr.length - 1; // Stop the loop at length - 1, because we look for the hook at i + 1
  let lastNodeIndexFound = 0;
  for (let i = startIndex; i < max; i++) {
    const hook = arr[i + 1] as number | (() => void);
    if (typeof hook === 'number') {
      lastNodeIndexFound = arr[i] as number;
      if (currentNodeIndex != null && lastNodeIndexFound >= currentNodeIndex) {
        break;
      }
    } else {
      const isInitHook = (arr[i] as number) < 0;
      if (isInitHook) {
        currentView[PREORDER_HOOK_FLAGS] += PreOrderHookFlags.NumberOfInitHooksCalledIncrementer;
      }
      if (lastNodeIndexFound < nodeIndexLimit || nodeIndexLimit == -1) {
        callHook(currentView, initPhase, arr, i);
        currentView[PREORDER_HOOK_FLAGS] =
          (currentView[PREORDER_HOOK_FLAGS] & PreOrderHookFlags.NumberOfInitHooksCalledMask) +
          i +
          2;
      }
      i++;
    }
  }
}

/**
 * Executes a single lifecycle hook, making sure that: