[agd-cvs] server/src interpret.c,1.27,1.28

[Peep P. <so...@us...>]

Update of /cvsroot/agd/server/src
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv32102

Modified Files:
	interpret.c 
Log Message:
Aesthetic stack traces; handling runtime errors which happen during loading an object (in create()); F_SLICE and F_SLICE_LVALUE work on arrays; removed some debugging code

Index: interpret.c
===================================================================
RCS file: /cvsroot/agd/server/src/interpret.c,v
retrieving revision 1.27
retrieving revision 1.28
diff -u -d -r1.27 -r1.28
--- interpret.c	23 Jul 2004 17:17:01 -0000	1.27
+++ interpret.c	24 Jul 2004 17:57:11 -0000	1.28
@@ -41,13 +41,13 @@
 void call_function(object_t *ob, int index);
 extern char *opc_name(int i);
 
+extern int doing_load;
+
 unsigned get_line_number(control_stack_t *p) {
 	return 42;
 }
 
 char *get_fun_name(int num, control_stack_t *csp) {
-	if(num < 0)
-		return "*DFUN";
 	if(csp->this_ob) {
 		if(csp->this_ob->prog)
 			return csp->this_ob->prog->fun_table[num];
@@ -57,54 +57,80 @@
 		return this_ob->prog->fun_table[num];
 }
 
+char *make_errmsg(control_stack_t *p, char *s)
+{
+	char *buf, *bufp;
+	buf = xmalloc(1024);
+	memset(buf, 0, 1024);
+	
+	bufp = buf;
+	sprintf(bufp, "%s: ", p->this_ob ? p->this_ob->name : "unknown");
+	bufp += strlen(bufp);
+
+	if(s) {
+		sprintf(bufp, "%s in ", s);
+		bufp += strlen(bufp);
+	}
+	
+	if(p->fun >= 0) {
+		sprintf(bufp, "function %d (%s) on line %d\n", p->fun,
+			get_fun_name(p->fun, p), get_line_number(p));
+	} else {
+		sprintf(bufp, "dfun %d\n", -p->fun);
+	}
+	return buf;
+}
+
 void stack_trace(void)
 {
 	int i, len;
 	len = csp - &control_stack[0];
 	printf("Stack trace:\n");
-	for(i=len;i>0;i--) {
-		control_stack_t *p = &control_stack[i];
-		printf("%d %s: function %d (%s) on line %d\n",
-			i, 	p->this_ob?p->this_ob->name:"unknown",
-			p->fun, get_fun_name(p->fun, p),
-			get_line_number(p));
+	for(i=1;i<=len;i++) {
+		char *buf;
+		buf = make_errmsg(&control_stack[i], NULL);
+		printf("%d %s", i, buf);
+		free(buf);
 	}
 }
 
 /* free_str: whether to free the string passed to it before
  * doing longjmp() or not - for dynamically allocated strings */
-void _runtime(char *s, int free_str)
+void runtime(char *s)
 {
 	char *buf;
 	
 	if(!this_ob) {
-		printf("%s on line %d (function %s)\n", s,
-				get_line_number(csp),
-				get_fun_name(csp->fun, csp));
+		buf = make_errmsg(csp, s);
+		printf("%s", buf);
+		free(buf);
 		goto out;
 	}
 	
-	buf = xmalloc(strlen(this_ob->name) + strlen(s) + 64);
-	sprintf(buf, "%s: %s on line %d function %d (%s)\n", this_ob->name, s,
+/*	sprintf(buf, "%s: %s on line %d function %d (%s)\n", this_ob->name, s,
 			get_line_number(csp-1),
-			csp->fun, get_fun_name(csp->fun, csp));
+			csp->fun, get_fun_name(csp->fun, csp));*/
+	buf = make_errmsg(csp, s);
+	if(doing_load)
+		printf("While loading object ");
 	printf(buf);
-	if(this_player) {
+	if(this_player)
 		do_write(buf);
-	}
 	free(buf);
 
-	if(free_str)
-		free(s);
-
 	stack_trace();
 
 out:
+	if(doing_load) {
+		doing_load = 0;
+		return;
+	}
+
 	fp = value_stack;
 	pop_locals();
 	csp = &control_stack[2];
 	pop_control_stack(0);
-
+	
 	longjmp(error_context, 1);
 }
 
@@ -112,7 +138,7 @@
 {
 	sp->type = T_OBJECT;
 	sp->u.ob = ob;
-	ref_ob(ob, sp);
+	ref_ob(ob, NULL);
 	sp++;
 	CHECK_SP()
 }
@@ -332,6 +358,8 @@
 	GET_ARGS();
 	
 	v = sp[-1].u.v;
+	index_check(v, arg);
+#if 0
 	if(!v->u.s)
 		runtime("taking substring of null string");
 	if(arg[0] > arg[1])
@@ -339,6 +367,7 @@
 	if(arg[0] < 0 || arg[1] > strlen(v->u.s)) {
 		runtime("substring out of range");
 	}
+#endif
 	return v;
 }
 
@@ -701,20 +730,21 @@
 			}
 			break;
 		case F_SLICE:
-			tmpvp = take_slice(arg);
-			tmps = xmalloc(arg[1] - arg[0] + 2);
-			for(tmpi=arg[0];tmpi<=arg[1];tmpi++)
-				tmps[tmpi-arg[0]] = tmpvp->u.s[tmpi];
-			tmps[arg[1] - arg[0] + 1] = '\0';
+			tmpvp = slice_var(take_slice(arg), arg[0], arg[1]);
 			pop_stack();
-			push_string(tmps, ST_MALLOC);
+			push_var(tmpvp);
 			break;
 		case F_SLICE_LVALUE:
-			tmpvp = take_slice(arg);
-			tmps = tmpvp->u.s + arg[1]; /* begin */
-			tmpi = tmpvp->string_type;
-			pop_stack();
-			push_string(tmps, tmpi);
+			tmpvp = slice_var(take_slice(arg), arg[0], arg[1]);
+			if(tmpvp->type & T_ARRAY) {
+				pop_stack();
+				push_var(tmpvp);
+			} else {
+				tmps = tmpvp->u.s + arg[1]; /* begin */
+				tmpi = tmpvp->string_type;
+				pop_stack();
+				push_string(tmps, tmpi);
+			}
 			push_lvalue(sp-1);
 			break;
 		case F_JUMP_IF_FALSE:
@@ -848,8 +878,9 @@
 	
 	/* Abnormal termination - need to pop unnecessary stuff off the stack. */
 	if(this_ob->flags & O_DESTRUCTED) {
-		while(csp->this_ob == this_ob)
+		while(csp->this_ob == this_ob) {
 			pop_control_stack(1);
+		}
 		pop_locals();
 		return;
 	}
@@ -863,9 +894,8 @@
 	int i;
 	function_t *f = ob->prog->functions[index];
 	if(!f) {
-		char *buf = xmalloc(512);
-		sprintf(buf, "function %d doesn't exist in object \"%s\"", index, ob->name);
-		runtime_dyn(buf);
+		/* Shouldn't happen. */
+		return;
 	}
 
 	csp->fun = index;
@@ -932,19 +962,11 @@
 	char *p;
 	int i, j;
 
-#ifdef DEBUG
-	struct timeval tm, tm2;
-#endif
-
 	index = get_fun_index(ob, fun);
 	if(index == -1)
 		return NULL;
 
 #ifdef DEBUG
-	gettimeofday(&tm, NULL);
-#endif
-	
-#ifdef DEBUG
 	if(conf.debuglevel)
 		printf("[lpc] apply \"%s\" on \"%s\"\n", fun, ob->name);
 #endif
@@ -965,7 +987,7 @@
 			case 's':
 				/* We duplicate the string, so we can be sure it's not static
 				   and can free() it. */
-				push_string(xstrdup(va_arg(va, char*)), ST_MALLOC);
+				push_string(xstrdup(va_arg(va, char *)), ST_MALLOC);
 				csp->num_arg++;
 				break;
 			default:
@@ -998,9 +1020,8 @@
 	eval_instruction();
 	
 #ifdef DEBUG
-	gettimeofday(&tm2, NULL);
 	if(conf.debuglevel)
-		printf("[lpc] apply \"%s\" done in %d microseconds\n", fun, tm2.tv_usec - tm.tv_usec);
+		printf("[lpc] apply \"%s\" done\n", fun);
 #endif
 
 	have_error_context = 0;