.move = frame_move
};
+void
+ao_lisp_frame_print(ao_poly p)
+{
+ struct ao_lisp_frame *frame = ao_lisp_poly_frame(p);
+ int f;
+
+ printf ("{");
+ if (frame) {
+ for (f = 0; f < frame->num; f++) {
+ if (f != 0)
+ printf(", ");
+ ao_lisp_poly_print(frame->vals[f].atom);
+ printf(" = ");
+ ao_lisp_poly_print(frame->vals[f].val);
+ }
+ if (frame->next)
+ ao_lisp_poly_print(frame->next);
+ }
+ printf("}");
+}
+
ao_poly *
ao_lisp_frame_ref(struct ao_lisp_frame *frame, ao_poly atom)
{
}
static struct ao_lisp_frame *
-ao_lisp_frame_realloc(struct ao_lisp_frame *frame, int new_num)
+ao_lisp_frame_realloc(struct ao_lisp_frame **frame_ref, int new_num)
{
+ struct ao_lisp_frame *frame = *frame_ref;
struct ao_lisp_frame *new;
int copy;
new = ao_lisp_frame_new(new_num);
if (!new)
return NULL;
+ /*
+ * Re-fetch the frame as it may have moved
+ * during the allocation
+ */
+ frame = *frame_ref;
copy = new_num;
if (copy > frame->num)
copy = frame->num;
memcpy(new->vals, frame->vals, copy * sizeof (struct ao_lisp_val));
- if (frame)
- new->next = frame->next;
+ new->next = frame->next;
return new;
}
-struct ao_lisp_frame *
-ao_lisp_frame_add(struct ao_lisp_frame *frame, ao_poly atom, ao_poly val)
+int
+ao_lisp_frame_add(struct ao_lisp_frame **frame_ref, ao_poly atom, ao_poly val)
{
+ struct ao_lisp_frame *frame = *frame_ref;
ao_poly *ref = frame ? ao_lisp_frame_ref(frame, atom) : NULL;
+
if (!ref) {
int f;
+ ao_lisp_root_poly_add(&atom);
+ ao_lisp_root_poly_add(&val);
if (frame) {
f = frame->num;
- frame = ao_lisp_frame_realloc(frame, f + 1);
+ frame = ao_lisp_frame_realloc(frame_ref, f + 1);
} else {
f = 0;
frame = ao_lisp_frame_new(1);
}
+ ao_lisp_root_clear(&atom);
+ ao_lisp_root_clear(&val);
if (!frame)
- return NULL;
+ return 0;
+ *frame_ref = frame;
DBG ("add atom %s %d, val %d at %d\n", ao_lisp_poly_atom(atom)->name, OFFSET(atom), OFFSET(val), f);
frame->vals[f].atom = atom;
ref = &frame->vals[f].val;
}
*ref = val;
- return frame;
+ return 1;
}