From 8e90f8de5d017fcc48283f4dd58a2dd8d6a15210 Mon Sep 17 00:00:00 2001
From: Jason Volk <jason@zemos.net>
Date: Mon, 6 May 2019 20:47:12 -0700
Subject: [PATCH] ircd::m::room::state: Add convenience to check if state
 event.

---
 include/ircd/m/room/state.h |  2 ++
 ircd/m_room.cc              | 27 +++++++++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/include/ircd/m/room/state.h b/include/ircd/m/room/state.h
index 41b96e8f6..fcf4f37bb 100644
--- a/include/ircd/m/room/state.h
+++ b/include/ircd/m/room/state.h
@@ -109,4 +109,6 @@ struct ircd::m::room::state
 	static size_t rebuild_present(const state &);
 	static bool force_present(const event &);
 	static size_t purge_replaced(const state &);
+	static bool is(std::nothrow_t, const event::idx &);
+	static bool is(const event::idx &);
 };
diff --git a/ircd/m_room.cc b/ircd/m_room.cc
index 372518d96..687f077a0 100644
--- a/ircd/m_room.cc
+++ b/ircd/m_room.cc
@@ -36,6 +36,33 @@ ircd::m::room::purge(const room &room)
 	return ret;
 }
 
+bool
+ircd::m::room::state::is(const event::idx &event_idx)
+{
+	bool ret{false};
+	m::get(event_idx, "state_key", [&ret]
+	(const string_view &state_key)
+	{
+		ret = true;
+	});
+
+	return ret;
+}
+
+bool
+ircd::m::room::state::is(std::nothrow_t,
+                         const event::idx &event_idx)
+{
+	bool ret{false};
+	m::get(std::nothrow, event_idx, "state_key", [&ret]
+	(const string_view &state_key)
+	{
+		ret = true;
+	});
+
+	return ret;
+}
+
 size_t
 ircd::m::room::state::purge_replaced(const state &state)
 {