You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
60 lines
2.4 KiB
C++
60 lines
2.4 KiB
C++
#pragma once
|
|
|
|
#include "crow/utility.h"
|
|
#include "crow/http_request.h"
|
|
#include "crow/http_response.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
|
|
{
|
|
using parent_context = typename black_magic::pop_back<Middlewares...>::template rebind<::crow::detail::partial_context>;
|
|
template <int N>
|
|
using partial = typename std::conditional<N == sizeof...(Middlewares)-1, partial_context, typename parent_context::template partial<N>>::type;
|
|
|
|
template <typename T>
|
|
typename T::context& get()
|
|
{
|
|
return static_cast<typename T::context&>(*this);
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct partial_context<>
|
|
{
|
|
template <int>
|
|
using partial = partial_context;
|
|
};
|
|
|
|
template <int N, typename Context, typename Container, typename CurrentMW, typename ... Middlewares>
|
|
bool middleware_call_helper(Container& middlewares, request& req, response& res, Context& ctx);
|
|
|
|
template <typename ... Middlewares>
|
|
struct context : private partial_context<Middlewares...>
|
|
//struct context : private Middlewares::context... // simple but less type-safe
|
|
{
|
|
template <int N, typename Context, typename Container>
|
|
friend typename std::enable_if<(N==0)>::type after_handlers_call_helper(Container& middlewares, Context& ctx, request& req, response& res);
|
|
template <int N, typename Context, typename Container>
|
|
friend typename std::enable_if<(N>0)>::type after_handlers_call_helper(Container& middlewares, Context& ctx, request& req, response& res);
|
|
|
|
template <int N, typename Context, typename Container, typename CurrentMW, typename ... Middlewares2>
|
|
friend bool middleware_call_helper(Container& middlewares, request& req, response& res, Context& ctx);
|
|
|
|
template <typename T>
|
|
typename T::context& get()
|
|
{
|
|
return static_cast<typename T::context&>(*this);
|
|
}
|
|
|
|
template <int N>
|
|
using partial = typename partial_context<Middlewares...>::template partial<N>;
|
|
};
|
|
}
|
|
}
|