Function pureFunction2Internal

packages/core/src/render3/pure_function.ts:366–383

(
  lView: LView,
  bindingRoot: number,
  slotOffset: number,
  pureFn: (v1: any, v2: any) => any,
  exp1: any,
  exp2: any,
  thisArg?: any,
)

 * @returns Updated or cached value
 */
export function pureFunction2Internal(
  lView: LView,
  bindingRoot: number,
  slotOffset: number,
  pureFn: (v1: any, v2: any) => any,
  exp1: any,
  exp2: any,
  thisArg?: any,
): any {
  const bindingIndex = bindingRoot + slotOffset;
  return bindingUpdated2(lView, bindingIndex, exp1, exp2)
    ? updateBinding(
        lView,
        bindingIndex + 2,
        thisArg ? pureFn.call(thisArg, exp1, exp2) : pureFn(exp1, exp2),
      )
    : getPureFunctionReturnValue(lView, bindingIndex + 2);
}

/**
 * If the value of any provided exp has changed, calls the pure function to return