From 07164d51a087533b2379ec6692487520ad5572cc Mon Sep 17 00:00:00 2001
From: John Doty <john@d0ty.me>
Date: Thu, 6 Jun 2024 17:05:41 -0700
Subject: [PATCH] Fix end of file error reporting

---
 harness.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/harness.py b/harness.py
index 320f534..06426ca 100644
--- a/harness.py
+++ b/harness.py
@@ -157,8 +157,8 @@ def parse(table: parser.ParseTable, tokens, trace=None) -> typing.Tuple[Tree | N
         for (kind, start, length) in input_tokens
     ]
 
-    assert "$" not in input
-    input = input + [TokenValue(kind="$", start=-1, end=-1)]
+    eof = 0 if len(input) == 0 else input[-1].end
+    input = input + [TokenValue(kind="$", start=eof, end=eof)]
     input_index = 0
 
     threads = [