From 2025724a923b73a1cce27524aea5ed4ac22ffd21 Mon Sep 17 00:00:00 2001
From: "B. Watson" <urchlay@slackware.uk>
Date: Mon, 17 Jun 2024 18:36:05 -0400
Subject: cxrefbas: show ref type in output.

---
 cxrefbas.c | 41 ++++++++++++++++++++++++++++-------------
 1 file changed, 28 insertions(+), 13 deletions(-)

diff --git a/cxrefbas.c b/cxrefbas.c
index 9228f28..4598117 100644
--- a/cxrefbas.c
+++ b/cxrefbas.c
@@ -8,39 +8,41 @@
 #include "bas.h"
 #include "bcdfp.h"
 
-/* not yet...
 typedef struct {
 	unsigned short lineno;
 	unsigned short pos;
-	unsigned char type;
+	unsigned char cmd;
 } lineref_t;
-*/
 
-unsigned short *linerefs[32769];
+lineref_t *linerefs[32769];
 int refcounts[32769];
 int lines_exist[32769];
 unsigned char last_cmd, on_op;
 int last_cmd_pos;
 
-void add_lineref(unsigned short from, unsigned short to) {
-	unsigned short *p;
+void add_lineref(unsigned short from, unsigned short pos) {
+	lineref_t *p;
 	int c;
+	unsigned short to;
 
+	to = fp2int(program + pos);
 	if(to > 32767) return;
 
 	p = linerefs[to];
 	c = refcounts[to];
 
 	if(c) {
-		p = realloc(p, sizeof(unsigned short) * (c + 1));
+		p = realloc(p, sizeof(lineref_t) * (c + 1));
 	} else {
-		p = malloc(sizeof(unsigned short));
+		p = malloc(sizeof(lineref_t));
 	}
 
 	if(!p) die("Out of memory.");
 
 	linerefs[to] = p;
-	p[c] = from;
+	linerefs[to][c].lineno = from;
+	linerefs[to][c].pos = pos;
+	linerefs[to][c].cmd = last_cmd;
 	c++;
 	refcounts[to] = c;
 }
@@ -137,14 +139,14 @@ CALLBACK(got_exp) {
 		case CMD_RESTORE:
 		case CMD_TRAP:
 			if((pos == last_cmd_pos + 1) && standalone) {
-				add_lineref(lineno, fp2int(program + pos + 1));
+				add_lineref(lineno, pos + 1);
 			} else {
 				computed_msg(lineno);
 			}
 			break;
 		case CMD_IF:
 			if(last_tok == OP_THEN) {
-				add_lineref(lineno, fp2int(program + pos + 1));
+				add_lineref(lineno, pos + 1);
 			}
 			break;
 		case CMD_ON: {
@@ -153,7 +155,7 @@ CALLBACK(got_exp) {
 					case OP_GOSUB:
 					case OP_COMMA:
 						if(standalone)
-							add_lineref(lineno, fp2int(program + pos + 1));
+							add_lineref(lineno, pos + 1);
 						else
 							computed_msg(lineno);
 						break;
@@ -176,13 +178,26 @@ void build_ref_table(void) {
 }
 
 void print_ref_table(void) {
+	char c;
 	int i, j;
 	for(i = 0; i < 32768; i++) {
 		if(refcounts[i]) {
 			if(!lines_exist[i]) putchar('!');
 			printf("%d: ", i);
 			for(j = 0; j < refcounts[i]; j++) {
-				printf("%d ", linerefs[i][j]);
+				printf("%d:", linerefs[i][j].lineno);
+				switch(linerefs[i][j].cmd) {
+					case CMD_GOTO: c = 'G'; break;
+					case CMD_GO_TO: c = 'G'; break;
+					case CMD_GOSUB: c = 'S'; break;
+					case CMD_RESTORE: c = 'R'; break;
+					case CMD_TRAP: c = 'T'; break;
+					case CMD_IF: c = 'I'; break;
+					case CMD_ON: c = 'O'; break;
+					default: c = '?'; break;
+				}
+				putchar(c);
+				putchar(' ');
 			}
 			putchar('\n');
 		}
-- 
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