Function try_handle_all

include/boost/leaf/handle_errors.hpp:610–628

template <class TryBlock, class... H>
inline
typename std::decay<decltype(std::declval<TryBlock>()().value())>::type
try_handle_all( TryBlock && try_block, H && ... h )
{
    static_assert(is_result_type<decltype(std::declval<TryBlock>()())>::value, "The return type of the try_block passed to try_handle_all must be registered with leaf::is_result_type");
    context_type_from_handlers<H...> ctx;
    auto active_context = activate_context(ctx);
    if( auto r = detail::try_catch_(ctx, std::forward<TryBlock>(try_block), std::forward<H>(h)...) )
        return std::move(r).value();
    else
    {
        BOOST_LEAF_ASSERT(ctx.is_active());
        detail::unload_result(&r);
        error_id id(r.error());
        ctx.deactivate();
        using R = typename std::decay<decltype(std::declval<TryBlock>()().value())>::type;
        return ctx.template handle_error<R>(std::move(id), std::forward<H>(h)...);
    }
}

template <class TryBlock, class... H>
BOOST_LEAF_ATTRIBUTE_NODISCARD inline