composite.hpp

C++的一个好库。。。现在很流行

///////////////////////////////////////////////////////////////////////////////
template <typename OperationT, typename TupleT,
    typename A, typename B, typename C, typename D>
struct composite4_result {

    typedef typename OperationT::template result<
        typename actor_result<A, TupleT>::plain_type,
        typename actor_result<B, TupleT>::plain_type,
        typename actor_result<C, TupleT>::plain_type,
        typename actor_result<D, TupleT>::plain_type
    >::type type;
};

//////////////////////////////////
template <typename OperationT,
    typename A, typename B, typename C, typename D>
struct composite<OperationT,
    A, B, C, D, nil_t, nil_t,
#if PHOENIX_LIMIT > 6
    nil_t, nil_t, nil_t,
#if PHOENIX_LIMIT > 9
    nil_t, nil_t, nil_t,
#if PHOENIX_LIMIT > 12
    nil_t, nil_t, nil_t,
#endif
#endif
#endif
    nil_t   //  Unused
> {

    typedef composite<OperationT, A, B, C, D> self_t;

    template <typename TupleT>
    struct result {

        typedef typename composite4_result<
            OperationT, TupleT, A, B, C, D
        >::type type;
    };

    composite(OperationT const& op_,
        A const& a_, B const& b_, C const& c_, D const& d_)
    :   op(op_), a(a_), b(b_), c(c_), d(d_) {}

    template <typename TupleT>
    typename actor_result<self_t, TupleT>::type
    eval(TupleT const& args) const
    {
        typename actor_result<A, TupleT>::type ra = a.eval(args);
        typename actor_result<B, TupleT>::type rb = b.eval(args);
        typename actor_result<C, TupleT>::type rc = c.eval(args);
        typename actor_result<D, TupleT>::type rd = d.eval(args);
        return op(ra, rb, rc, rd);
    }

    mutable OperationT op; //  operation
    A a; B b; C c; D d; //  actors
};

///////////////////////////////////////////////////////////////////////////////
//
//  composite <5 actors> class
//
///////////////////////////////////////////////////////////////////////////////
template <typename OperationT, typename TupleT,
    typename A, typename B, typename C, typename D, typename E>
struct composite5_result {

    typedef typename OperationT::template result<
        typename actor_result<A, TupleT>::plain_type,
        typename actor_result<B, TupleT>::plain_type,
        typename actor_result<C, TupleT>::plain_type,
        typename actor_result<D, TupleT>::plain_type,
        typename actor_result<E, TupleT>::plain_type
    >::type type;
};

//////////////////////////////////
template <typename OperationT,
    typename A, typename B, typename C, typename D, typename E>
struct composite<OperationT,
    A, B, C, D, E, nil_t,
#if PHOENIX_LIMIT > 6
    nil_t, nil_t, nil_t,
#if PHOENIX_LIMIT > 9
    nil_t, nil_t, nil_t,
#if PHOENIX_LIMIT > 12
    nil_t, nil_t, nil_t,
#endif
#endif
#endif
    nil_t   //  Unused
> {

    typedef composite<OperationT, A, B, C, D, E> self_t;

    template <typename TupleT>
    struct result {

        typedef typename composite5_result<
            OperationT, TupleT, A, B, C, D, E
        >::type type;
    };

    composite(OperationT const& op_,
        A const& a_, B const& b_, C const& c_, D const& d_, E const& e_)
    :   op(op_), a(a_), b(b_), c(c_), d(d_), e(e_) {}

    template <typename TupleT>
    typename actor_result<self_t, TupleT>::type
    eval(TupleT const& args) const
    {
        typename actor_result<A, TupleT>::type ra = a.eval(args);
        typename actor_result<B, TupleT>::type rb = b.eval(args);
        typename actor_result<C, TupleT>::type rc = c.eval(args);
        typename actor_result<D, TupleT>::type rd = d.eval(args);
        typename actor_result<E, TupleT>::type re = e.eval(args);
        return op(ra, rb, rc, rd, re);
    }

    mutable OperationT op; //  operation
    A a; B b; C c; D d; E e; //  actors
};

///////////////////////////////////////////////////////////////////////////////
//
//  composite <6 actors> class
//
///////////////////////////////////////////////////////////////////////////////
template <typename OperationT, typename TupleT,
    typename A, typename B, typename C, typename D, typename E,
    typename F>
struct composite6_result {

    typedef typename OperationT::template result<
        typename actor_result<A, TupleT>::plain_type,
        typename actor_result<B, TupleT>::plain_type,
        typename actor_result<C, TupleT>::plain_type,
        typename actor_result<D, TupleT>::plain_type,
        typename actor_result<E, TupleT>::plain_type,
        typename actor_result<F, TupleT>::plain_type
    >::type type;
};

//////////////////////////////////
template <typename OperationT,
    typename A, typename B, typename C, typename D, typename E,
    typename F>
struct composite<OperationT,
    A, B, C, D, E, F,
#if PHOENIX_LIMIT > 6
    nil_t, nil_t, nil_t,
#if PHOENIX_LIMIT > 9
    nil_t, nil_t, nil_t,
#if PHOENIX_LIMIT > 12
    nil_t, nil_t, nil_t,
#endif
#endif
#endif
    nil_t   //  Unused
> {

    typedef composite<OperationT, A, B, C, D, E, F> self_t;

    template <typename TupleT>
    struct result {

        typedef typename composite6_result<
            OperationT, TupleT, A, B, C, D, E, F
        >::type type;
    };

    composite(OperationT const& op_,
        A const& a_, B const& b_, C const& c_, D const& d_, E const& e_,
        F const& f_)
    :   op(op_), a(a_), b(b_), c(c_), d(d_), e(e_),
        f(f_) {}

    template <typename TupleT>
    typename actor_result<self_t, TupleT>::type
    eval(TupleT const& args) const
    {
        typename actor_result<A, TupleT>::type ra = a.eval(args);
        typename actor_result<B, TupleT>::type rb = b.eval(args);
        typename actor_result<C, TupleT>::type rc = c.eval(args);
        typename actor_result<D, TupleT>::type rd = d.eval(args);
        typename actor_result<E, TupleT>::type re = e.eval(args);
        typename actor_result<F, TupleT>::type rf = f.eval(args);
        return op(ra, rb, rc, rd, re, rf);
    }

    mutable OperationT op; //  operation
    A a; B b; C c; D d; E e; F f; //  actors
};

#if PHOENIX_LIMIT > 6
///////////////////////////////////////////////////////////////////////////////
//
//  composite <7 actors> class
//
///////////////////////////////////////////////////////////////////////////////
template <typename OperationT, typename TupleT,
    typename A, typename B, typename C, typename D, typename E,
    typename F, typename G>
struct composite7_result {

    typedef typename OperationT::template result<
        typename actor_result<A, TupleT>::plain_type,
        typename actor_result<B, TupleT>::plain_type,
        typename actor_result<C, TupleT>::plain_type,
        typename actor_result<D, TupleT>::plain_type,
        typename actor_result<E, TupleT>::plain_type,
        typename actor_result<F, TupleT>::plain_type,
        typename actor_result<G, TupleT>::plain_type
    >::type type;
};

//////////////////////////////////
template <typename OperationT,
    typename A, typename B, typename C, typename D, typename E,
    typename F, typename G>
struct composite<OperationT,
    A, B, C, D, E, F, G, nil_t, nil_t,
#if PHOENIX_LIMIT > 9
    nil_t, nil_t, nil_t,
#if PHOENIX_LIMIT > 12
    nil_t, nil_t, nil_t,
#endif
#endif
    nil_t   //  Unused
> {

    typedef composite<OperationT, A, B, C, D, E, F, G> self_t;

    template <typename TupleT>
    struct result {

        typedef typename composite7_result<
            OperationT, TupleT, A, B, C, D, E, F, G
        >::type type;
    };

    composite(OperationT const& op_,
        A const& a_, B const& b_, C const& c_, D const& d_, E const& e_,
        F const& f_, G const& g_)
    :   op(op_), a(a_), b(b_), c(c_), d(d_), e(e_),
        f(f_), g(g_) {}

    template <typename TupleT>
    typename actor_result<self_t, TupleT>::type
    eval(TupleT const& args) const
    {
        typename actor_result<A, TupleT>::type ra = a.eval(args);
        typename actor_result<B, TupleT>::type rb = b.eval(args);
        typename actor_result<C, TupleT>::type rc = c.eval(args);
        typename actor_result<D, TupleT>::type rd = d.eval(args);
        typename actor_result<E, TupleT>::type re = e.eval(args);
        typename actor_result<F, TupleT>::type rf = f.eval(args);
        typename actor_result<G, TupleT>::type rg = g.eval(args);
        return op(ra, rb, rc, rd, re, rf, rg);
    }

    mutable OperationT op; //  operation
    A a; B b; C c; D d; E e; F f; G g; //  actors
};

///////////////////////////////////////////////////////////////////////////////
//
//  composite <8 actors> class
//
///////////////////////////////////////////////////////////////////////////////
template <typename OperationT, typename TupleT,
    typename A, typename B, typename C, typename D, typename E,
    typename F, typename G, typename H>
struct composite8_result {

    typedef typename OperationT::template result<
        typename actor_result<A, TupleT>::plain_type,
        typename actor_result<B, TupleT>::plain_type,
        typename actor_result<C, TupleT>::plain_type,
        typename actor_result<D, TupleT>::plain_type,
        typename actor_result<E, TupleT>::plain_type,
        typename actor_result<F, TupleT>::plain_type,
        typename actor_result<G, TupleT>::plain_type,
        typename actor_result<H, TupleT>::plain_type
    >::type type;
};

//////////////////////////////////
template <typename OperationT,
    typename A, typename B, typename C, typename D, typename E,
    typename F, typename G, typename H>
struct composite<OperationT,
    A, B, C, D, E, F, G, H, nil_t,
#if PHOENIX_LIMIT > 9
    nil_t, nil_t, nil_t,
#if PHOENIX_LIMIT > 12
    nil_t, nil_t, nil_t,
#endif
#endif
    nil_t   //  Unused
> {

    typedef composite<OperationT, A, B, C, D, E, F, G, H> self_t;

    template <typename TupleT>
    struct result {

        typedef typename composite8_result<
            OperationT, TupleT, A, B, C, D, E, F, G, H
        >::type type;
    };

    composite(OperationT const& op_,
        A const& a_, B const& b_, C const& c_, D const& d_, E const& e_,
        F const& f_, G const& g_, H const& h_)
    :   op(op_), a(a_), b(b_), c(c_), d(d_), e(e_),
        f(f_), g(g_), h(h_) {}

    template <typename TupleT>
    typename actor_result<self_t, TupleT>::type
    eval(TupleT const& args) const
    {
        typename actor_result<A, TupleT>::type ra = a.eval(args);
        typename actor_result<B, TupleT>::type rb = b.eval(args);
        typename actor_result<C, TupleT>::type rc = c.eval(args);
        typename actor_result<D, TupleT>::type rd = d.eval(args);
        typename actor_result<E, TupleT>::type re = e.eval(args);
        typename actor_result<F, TupleT>::type rf = f.eval(args);
        typename actor_result<G, TupleT>::type rg = g.eval(args);
        typename actor_result<H, TupleT>::type rh = h.eval(args);
        return op(ra, rb, rc, rd, re, rf, rg, rh);
    }

    mutable OperationT op; //  operation
    A a; B b; C c; D d; E e; F f; G g; H h; //  actors
};

///////////////////////////////////////////////////////////////////////////////
//
//  composite <9 actors> class
//
///////////////////////////////////////////////////////////////////////////////
template <typename OperationT, typename TupleT,
    typename A, typename B, typename C, typename D, typename E,
    typename F, typename G, typename H, typename I>
struct composite9_result {

    typedef typename OperationT::template result<
        typename actor_result<A, TupleT>::plain_type,
        typename actor_result<B, TupleT>::plain_type,
        typename actor_result<C, TupleT>::plain_type,
        typename actor_result<D, TupleT>::plain_type,
        typename actor_result<E, TupleT>::plain_type,
        typename actor_result<F, TupleT>::plain_type,
        typename actor_result<G, TupleT>::plain_type,