From bf2df9c223a6620671bb377897f6958967368ef6 Mon Sep 17 00:00:00 2001
From: Jason Volk <jason@zemos.net>
Date: Wed, 11 Dec 2019 11:01:11 -0800
Subject: [PATCH] ircd::m: Add a tuple structure for m_relates_to.

---
 include/ircd/m/m.h       |  1 +
 include/ircd/m/name.h    |  2 ++
 include/ircd/m/relates.h | 28 ++++++++++++++++++++++++++++
 matrix/name.cc           |  2 ++
 4 files changed, 33 insertions(+)
 create mode 100644 include/ircd/m/relates.h

diff --git a/include/ircd/m/m.h b/include/ircd/m/m.h
index 676ebea3e..8adc7513d 100644
--- a/include/ircd/m/m.h
+++ b/include/ircd/m/m.h
@@ -78,6 +78,7 @@ namespace ircd
 #include "typing.h"
 #include "receipt.h"
 #include "direct_to_device.h"
+#include "relates.h"
 #include "txn.h"
 #include "hook.h"
 #include "visible.h"
diff --git a/include/ircd/m/name.h b/include/ircd/m/name.h
index 3f39b271a..fcd46c1d9 100644
--- a/include/ircd/m/name.h
+++ b/include/ircd/m/name.h
@@ -178,4 +178,6 @@ struct ircd::m::name
 	static constexpr const char *const include_state {"include_state"};
 	static constexpr const char *const groupings {"groupings"};
 	static constexpr const char *const filter {"filter"};
+
+	static constexpr const char *const rel_type {"rel_type"};
 };
diff --git a/include/ircd/m/relates.h b/include/ircd/m/relates.h
new file mode 100644
index 000000000..321e80312
--- /dev/null
+++ b/include/ircd/m/relates.h
@@ -0,0 +1,28 @@
+// 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_RELATES_H
+
+namespace ircd::m
+{
+	struct relates_to;
+}
+
+struct ircd::m::relates_to
+:json::tuple
+<
+	json::property<name::event_id, json::string>,
+	json::property<name::rel_type, json::string>
+>
+{
+	using super_type::tuple;
+	using super_type::operator=;
+};
diff --git a/matrix/name.cc b/matrix/name.cc
index 72d9c03e6..089382fca 100644
--- a/matrix/name.cc
+++ b/matrix/name.cc
@@ -157,3 +157,5 @@ constexpr const char *const ircd::m::name::event_context;
 constexpr const char *const ircd::m::name::include_state;
 constexpr const char *const ircd::m::name::groupings;
 constexpr const char *const ircd::m::name::filter;
+
+constexpr const char *const ircd::m::name::rel_type;