From 76fe5830bed534d446962fa983e56b65e21265f7 Mon Sep 17 00:00:00 2001
From: Devine Lu Linvega <aliceffekt@gmail.com>
Date: Wed, 24 Apr 2024 13:35:12 -0700
Subject: [PATCH] Abstracted reg lookup

---
 src/modal.c | 25 ++++++++++++++-----------
 1 file changed, 14 insertions(+), 11 deletions(-)

diff --git a/src/modal.c b/src/modal.c
index de10d82..571d8ec 100644
--- a/src/modal.c
+++ b/src/modal.c
@@ -166,6 +166,16 @@ parse_frag(char *s)
 	return s;
 }
 
+static int
+find_register(Rule *r, char reg)
+{
+	int i;
+	for(i = 0; i < (int)r->ptr; i++)
+		if(r->key[i] == reg)
+			return i;
+	return -1;
+}
+
 static void
 compile_rule(Rule *r)
 {
@@ -175,12 +185,7 @@ compile_rule(Rule *r)
 	s = r->a;
 	while((c = *s++)) { /* left */
 		if(c == '?') {
-			int reg = -1;
-			for(i = 0; i < (int)r->ptr; i++)
-				if(r->key[i] == *s) {
-					reg = i;
-					break;
-				}
+			int reg = find_register(r, *s);
 			if(reg < 0 && *s != '(')
 				r->key[r->ptr] = *s, reg = r->ptr++;
 			*s = '0' + reg;
@@ -189,11 +194,9 @@ compile_rule(Rule *r)
 	s = r->b;
 	while((c = *s++)) { /* right */
 		if(c == '?') {
-			for(i = 0; i < (int)r->ptr; i++)
-				if(r->key[i] == *s) {
-					*s = '0' + i;
-					break;
-				}
+			int reg = find_register(r, *s);
+			if(reg >= 0)
+				*s = '0' + reg;
 		}
 	}
 }