forge_any_receiver_example.cpp

// MIT License
//
// Copyright (c) 2026 Forge Project
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.

#include <forge/any_receiver.hpp>
#include <exception>
#include <iostream>

struct print_receiver {
    using receiver_concept = std::execution::receiver_t;

    int* out{};

    void set_value(int v) && noexcept { *out = v; }
    void set_error(std::exception_ptr) && noexcept {}
    void set_stopped() && noexcept {}
    auto get_env() const noexcept -> std::execution::empty_env { return {}; }
};

int main() {
    using cs_int = std::execution::completion_signatures<
        std::execution::set_value_t(int),
        std::execution::set_error_t(std::exception_ptr),
        std::execution::set_stopped_t()>;

    int captured = 0;
    forge::any_receiver_of<cs_int> erased = print_receiver{&captured};
    std::execution::set_value(std::move(erased), 7);

    std::cout << "any_receiver value=" << captured << '\n';
    return 0;
}