From 4813ad123086b916fca01e2911e70db2b8074c1d Mon Sep 17 00:00:00 2001
From: katherine <shmibs@airen-no-jikken.icu>
Date: Sun, 12 May 2019 17:04:41 -0700
Subject: check for at fewest one variable rule

---
 src/parse.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/parse.c b/src/parse.c
index 4a6aff8..ce255bb 100644
--- a/src/parse.c
+++ b/src/parse.c
@@ -367,6 +367,11 @@ struct parse_result_s parse(FILE *f, const char *fname)
 			ERR_AT(t.line, t.col, "unexpected token `%s`", t.val);
 	}
 
+	if (r.vars == NULL) {
+		fprintf(stderr, "\e[1m%s:\e[0m ", fname);
+		ERR("config must specify at fewest one variable rule");
+	}
+
 	HASH_ITER(hh, r.vars, vcur, vtmp) {
 		switch (vcur->type) {
 		case PARSE_TYPE_DEFTYPE:
-- 
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