Concept definition

template<typename Policy>
concept itch::venue::VenuePolicy =  requires {
    { Policy::name() } -> std::convertible_to<std::string_view>;
}

Detailed Description

Concept describing a venue/protocol policy.

ITCHCPP today implements NASDAQ TotalView-ITCH 5.0 concretely. This concept is the extension seam for adding ITCH-like venues and versions (NASDAQ BX/PSX, older ITCH 4.1, and other venue feeds) without rewriting the dispatch machinery: a policy names itself and enumerates its message-type registry, and the dispatch-table builder can be parameterized on it.

A conforming policy provides:

static constexpr std::string_view name() identifying the venue/version.
static void for_each_message_type(Visitor&&) invoking visitor.template operator()<MsgType>(char) once per message type, the same shape as itch::detail::for_each_message_type.

Definition at line 34 of file venue.hpp.