blob: 6dbf923e3447be0a9a0dc377e23e265da4558b05 (
plain) (
tree)
|
|
#pragma once
#include "utility.h"
namespace crow
{
namespace detail
{
template <typename ... Middlewares>
struct partial_context
: public black_magic::pop_back<Middlewares...>::template rebind<partial_context>
, public black_magic::last_element_type<Middlewares...>::type::context
{
};
template <>
struct partial_context<>
{
};
template <typename ... Middlewares>
struct context : private partial_context<Middlewares...>
//struct context : private Middlewares::context... // simple but less type-safe
{
template <typename T>
typename T::context& get()
{
return static_cast<typename T::context&>(*this);
}
};
}
}
|