module Std::Channel {

    extern func bux_channel_new(capacity: int64, elem_size: int64) -> *void;
    extern func bux_channel_send(handle: *void, elem: *void);
    extern func bux_channel_recv(handle: *void, out: *void) -> int;
    extern func bux_channel_close(handle: *void);
    extern func bux_channel_free(handle: *void);

    struct Channel<T> {
        handle: *void;
    }

    func Channel_New<T>(capacity: int64) -> Channel<T> {
        return Channel<T> { handle: bux_channel_new(capacity, sizeof(T)) };
    }

    func Channel_Send<T>(ch: *Channel<T>, value: T) {
        bux_channel_send(ch.handle, (&value) as *void);
    }

    func Channel_Recv<T>(ch: *Channel<T>) -> T {
        var result: T;
        bux_channel_recv(ch.handle, (&result) as *void);
        return result;
    }

    func Channel_Recv_Ok<T>(ch: *Channel<T>, out: *T) -> bool {
        return bux_channel_recv(ch.handle, out as *void) != 0;
    }

    func Channel_Close<T>(ch: *Channel<T>) {
        bux_channel_close(ch.handle);
    }

    func Channel_Free<T>(ch: *Channel<T>) {
        bux_channel_free(ch.handle);
    }

    func Channel_Drop<T>(ch: *Channel<T>) {
        Channel_Free<T>(ch);
    }

    /* Convenience wrappers for common types */
    func Channel_SendInt(ch: *Channel<int>, value: int) {
        bux_channel_send(ch.handle, (&value) as *void);
    }

    func Channel_RecvInt(ch: *Channel<int>) -> int {
        var result: int = 0;
        bux_channel_recv(ch.handle, (&result) as *void);
        return result;
    }

    func Channel_SendFloat64(ch: *Channel<float64>, value: float64) {
        bux_channel_send(ch.handle, (&value) as *void);
    }

    func Channel_RecvFloat64(ch: *Channel<float64>) -> float64 {
        var result: float64 = 0.0;
        bux_channel_recv(ch.handle, (&result) as *void);
        return result;
    }

}
