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construct/include/ircd/m/hook.h
2018-03-16 13:13:33 -07:00

97 lines
2.3 KiB
C++

// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice is present in all copies. The
// full license for this software is available in the LICENSE file.
#pragma once
#define HAVE_IRCD_M_HOOK_H
namespace ircd::m
{
struct hook;
}
struct ircd::m::hook
{
struct site;
struct list;
IRCD_EXCEPTION(ircd::error, error)
struct list static list;
json::strung _feature;
json::object feature;
m::event matching;
std::function<void (const m::event &)> function;
bool registered;
string_view site_name() const;
bool match(const m::event &) const;
public:
hook(const json::members &, decltype(function));
hook(decltype(function), const json::members &);
hook(hook &&) = delete;
hook(const hook &) = delete;
virtual ~hook() noexcept;
};
/// The hook::site is the call-site for a hook. Each hook site is named
/// and registers itself with the master extern hook::list. Each hook
/// then registers itself with a hook::site. The site contains internal
/// state to manage the efficient calling of the participating hooks.
struct ircd::m::hook::site
{
json::strung _feature;
json::object feature;
bool registered;
size_t count {0};
string_view name() const;
std::multimap<string_view, hook *> origin;
std::multimap<string_view, hook *> room_id;
std::multimap<string_view, hook *> sender;
std::multimap<string_view, hook *> state_key;
std::multimap<string_view, hook *> type;
friend class hook;
bool add(hook &);
bool del(hook &);
void call(hook &, const event &);
public:
void operator()(const event &);
site(const json::members &);
site(site &&) = delete;
site(const site &) = delete;
~site() noexcept;
};
/// The hook list is the registry of all of the hook sites. This is a singleton
/// class with an extern instance. Each hook::site will register itself here
/// by human readable name.
struct ircd::m::hook::list
:std::map<string_view, hook::site *>
{
friend class site;
bool add(site &);
bool del(site &);
friend class hook;
bool add(hook &);
bool del(hook &);
public:
list() = default;
list(list &&) = delete;
list(const list &) = delete;
};