opr1.evaluate(function)?.let {
            return it.adjustType(functionCall.resolvedType)
        }

        val argument = functionCall.arguments.firstOrNull() ?: return null
        val opr2 = evaluate(argument, mode) ?: return null
        opr1.evaluate(function, opr2)?.let {
            return it.adjustType(functionCall.resolvedType)
        }
        return null
    }