From 2e9cd207614e40f94539d503d7334f13aa8ba4f5 Mon Sep 17 00:00:00 2001
From: dtb <trinity@trinity.moe>
Date: Fri, 9 Dec 2022 21:59:48 -0500
Subject: [PATCH] mirror and brackets

---
 src/blang.c |  6 +++---
 src/blang.h |  6 ++----
 src/ops.c   | 36 ++++++++++++++++++++++++++++--------
 3 files changed, 33 insertions(+), 15 deletions(-)

diff --git a/src/blang.c b/src/blang.c
index 1edfbed..88a48ef 100644
--- a/src/blang.c
+++ b/src/blang.c
@@ -11,12 +11,12 @@ int main(int argc, char **argv){
 	void (*op)(struct State *);
 
 	s.chart = *(argv+1);
-	s.counter = 0;
+	s.counter = s.chart;
 
-	for(s.counter = 0; ; ++s.counter){
+	for(s.counter = s.chart; ; ++s.counter){
 		if(s.chart == (char *)0)
 			return (int)s.hand;
-		if((op = Ops_lookup(s.chart[s.counter])) == NULL)
+		if((op = Ops_lookup(*s.counter)) == NULL)
 			return 127;
 		else
 			op(&s);
diff --git a/src/blang.h b/src/blang.h
index 3aba3bb..1179111 100644
--- a/src/blang.h
+++ b/src/blang.h
@@ -5,15 +5,13 @@
  * Adjust to architecture/system/environment/etc. */
 typedef uint64_t hand_t; 
 
-/* Just has to be fairly big. (TODO specify) */
-typedef uint64_t counter_t;
-
 /* Holds *argv; will not change between environments. */
 typedef char * chart_t;
 
 struct State{
 	chart_t chart;
-	counter_t counter;
+	chart_t point;
+	chart_t counter;
 	hand_t hand;
 };
 #endif
diff --git a/src/ops.c b/src/ops.c
index 510c72b..998edc1 100644
--- a/src/ops.c
+++ b/src/ops.c
@@ -18,7 +18,7 @@ void Ops_carat(struct State *s){
 }
 
 void Ops_ampersand(struct State *s){
-	s->hand = (char)s->chart;
+	s->hand = (uint64_t)s->chart;
 }
 
 void Ops_splat(struct State *s){
@@ -33,42 +33,62 @@ void Ops_dash(struct State *s){
 	--(s->hand);
 }
 
+void Ops_lbrack(struct State *s){
+	s->point = s->counter;
+}
+
+void Ops_rbrack(struct State *s){
+	s->counter = s->point;
+}
+
+void Ops_left(struct State *s){
+	s->hand = *++s->counter;
+}
+
 void Ops_right(struct State *s){
 	putc((char)s->hand, stdout);
 }
 
-void Ops_left(struct State *s){
-	s->hand = getc(stdin);
+void Ops_what(struct State *s){
+	if(!s->hand)
+		++(s->counter);
 }
 
 void Ops_semi(struct State *s){
 	int c;
 
-	while(
-		(c = getc(stdin)) != EOF
-		&& strchr("!\n", c) == NULL
-	);
+	while(strchr("!\n", *++s->counter) == NULL);
+}
+
+void Ops_mirror(struct State *s){
+	s->hand = !s->hand;
 }
 
 void Ops_cross(struct State *s){
 	char *i;
 	i = s->chart;
 	s->chart = (char *)s->hand;
-	s->hand = (unsigned char)i;
+	s->hand = (uint64_t)i;
 }
 
 const struct {
 	unsigned char name;
 	void (*f)(struct State *);
 } OPS[] = {
+	{ '#', Ops_semi },
 	{ '%', Ops_percent },
 	{ '^', Ops_carat },
 	{ '&', Ops_ampersand },
 	{ '*', Ops_splat },
 	{ '+', Ops_plus },
 	{ '-', Ops_dash },
+	{ '{', Ops_lbrack },
+	{ '}', Ops_rbrack },
+	{ ';', Ops_semi },
 	{ '>', Ops_right },
 	{ '<', Ops_left },
+	{ '?', Ops_what },
+	{ 'v', Ops_mirror },
 	{ 'x', Ops_cross },
 
 	/* no-ops */