Function applyIcuSwitchCaseRemove

packages/core/src/render3/i18n/i18n_apply.ts:558–574

* Apply OpCodes associated with tearing ICU case. * * This involves tearing down existing case and than building up a new case. * * @param tView Current `TView` * @param tIcu Current `TIcu` * @param lView Current `LView`

(tView: TView, tIcu: TIcu, lView: LView)

 * @param lView Current `LView`
 */
function applyIcuSwitchCaseRemove(tView: TView, tIcu: TIcu, lView: LView) {
  let activeCaseIndex = getCurrentICUCaseIndex(tIcu, lView);
  if (activeCaseIndex !== null) {
    const removeCodes = tIcu.remove[activeCaseIndex];
    for (let i = 0; i < removeCodes.length; i++) {
      const nodeOrIcuIndex = removeCodes[i] as number;
      if (nodeOrIcuIndex > 0) {
        // Positive numbers are `RNode`s.
        const rNode = getNativeByIndex(nodeOrIcuIndex, lView);
        rNode !== null && nativeRemoveNode(lView[RENDERER], rNode);
      } else {
        // Negative numbers are ICUs
        applyIcuSwitchCaseRemove(tView, getTIcu(tView, ~nodeOrIcuIndex)!, lView);
      }
    }
  }
}

/**
 * Returns the index of the current case of an ICU expression depending on the main binding value