From 4455c347354afe497df35986043241f5d8438670 Mon Sep 17 00:00:00 2001
From: Brandon Dyck <brandon@dyck.us>
Date: Tue, 17 Sep 2024 21:37:07 -0600
Subject: [PATCH] Allow expected in MessageEnd

---
 gigaparsec.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gigaparsec.go b/gigaparsec.go
index aa8ebc3..67a53b1 100644
--- a/gigaparsec.go
+++ b/gigaparsec.go
@@ -118,7 +118,9 @@ func (m Message) String() string {
 
 func MessageOK(pos uint64) Message { return Message{pos: pos} }
 
-func MessageEnd(pos uint64) Message { return Message{pos: pos, got: "end of input"} }
+func MessageEnd(pos uint64, expected ...string) Message {
+	return Message{pos: pos, got: "end of input", expected: expected}
+}
 
 func MakeState[In any](c cursor.Cursor[In]) State[In] {
 	return State[In]{cursor: c}