From c570e046222ac6df6757a98fa1879fb1add8d572 Mon Sep 17 00:00:00 2001
From: Jason Volk <jason@zemos.net>
Date: Thu, 5 Sep 2019 14:38:41 -0700
Subject: [PATCH] ircd::m::event::prev: Add _events_exist() convenience suite.

---
 include/ircd/m/event/prev.h |  3 +++
 ircd/m_event.cc             | 22 ++++++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/include/ircd/m/event/prev.h b/include/ircd/m/event/prev.h
index 3ac59872f..7f608d88b 100644
--- a/include/ircd/m/event/prev.h
+++ b/include/ircd/m/event/prev.h
@@ -55,6 +55,9 @@ struct ircd::m::event::prev
 	size_t auth_events_count() const;
 	size_t prev_events_count() const;
 
+	size_t auth_events_exist() const;
+	size_t prev_events_exist() const;
+
 	using super_type::tuple;
 	using super_type::operator=;
 };
diff --git a/ircd/m_event.cc b/ircd/m_event.cc
index 696d15466..fcb35997d 100644
--- a/ircd/m_event.cc
+++ b/ircd/m_event.cc
@@ -1962,6 +1962,28 @@ const
 // event/prev.h
 //
 
+size_t
+ircd::m::event::prev::prev_events_exist()
+const
+{
+	size_t ret(0);
+	for(size_t i(0); i < prev_events_count(); ++i)
+		ret += prev_event_exists(i);
+
+	return ret;
+}
+
+size_t
+ircd::m::event::prev::auth_events_exist()
+const
+{
+	size_t ret(0);
+	for(size_t i(0); i < auth_events_count(); ++i)
+		ret += auth_event_exists(i);
+
+	return ret;
+}
+
 bool
 ircd::m::event::prev::prev_event_exists(const size_t &idx)
 const