coroutine2/example/chained.cpp

//          Copyright Oliver Kowalke 2014.
// Distributed under the Boost Software License, Version 1.0.
//    (See accompanying file LICENSE_1_0.txt or copy at
//          http://www.boost.org/LICENSE_1_0.txt)

#include <cstdlib>
#include <iostream>

#include <boost/coroutine2/all.hpp>

template< typename coroutine >
struct test {
    using pull_type = typename coroutine::pull_type;
    using push_type = typename coroutine::push_type;

    pull_type * child = nullptr;

    void start_child_coroutine() {
        child = new pull_type([](push_type & yield) {
                                std::cout << "2";
                                yield();
                                std::cout << "2";
                                yield();
                                std::cout << "2";
                                yield();
                                std::cout << "2";
                                yield();
                                std::cout << "2";
                                yield();
                                std::cout << "2";
                              });
    }

    pull_type start_parent_coroutine() {
        return pull_type([=](push_type & yield) {
                            std::cout << "1";
                            start_child_coroutine();
                            yield();
                            std::cout << "1";
                         });
    }

    test() {
        auto parent = start_parent_coroutine();
        while ( * child) {
            ( * child)();
        }
        std::cout << std::endl;
    }
};


int main() {
    test< boost::coroutines2::coroutine< void > > t;
    std::cout << "Done" << std::endl;

    return EXIT_SUCCESS;
}