//********************************************************
// The following code example is taken from the book
//  C++23 - The Complete Guide
//  by Nicolai M. Josuttis (www.josuttis.com)
//  https://www.cppstd23.com
//
// The code is licensed under a
//  Creative Commons Attribution 4.0 International License
//  https://creativecommons.org/licenses/by/4.0/
//********************************************************


#include <generator>
#include <ranges>
#include "fibo5.hpp"

std::generator<long> testFibonacci()
{
  // yield the first 10 Fibonacci numbers:
  co_yield std::ranges::elements_of(fibonacci(10));

  co_yield 9999;  // yield 9999 as separator

  // yield the last two of the first 10 Fibonacci numbers again:
  co_yield std::ranges::elements_of(fibonacci(10) | std::views::drop(8));

  co_yield 9999;  // yield 9999 as separator

  // yield the first Fibonacci number:
  co_yield std::ranges::elements_of(fibonacci(1));
}