if (copy == NULL)
return type;
*copy = *type;
+ copy->tt_flags &= ~TTFLAG_STATIC;
if (type->tt_args != NULL
&& func_type_add_arg_types(copy, type->tt_argcount, type_gap) == OK)
return copy;
}
+/*
+ * Inner part of copy_type_deep().
+ * When allocation fails returns "type".
+ */
+ static type_T *
+copy_type_deep_rec(type_T *type, garray_T *type_gap, garray_T *seen_types)
+{
+ for (int i = 0; i < seen_types->ga_len; ++i)
+ if (((type_T **)seen_types->ga_data)[i * 2] == type)
+ // seen this type before, return the copy we made
+ return ((type_T **)seen_types->ga_data)[i * 2 + 1];
+
+ type_T *copy = copy_type(type, type_gap);
+ if (ga_grow(seen_types, 1) == FAIL)
+ return copy;
+ ((type_T **)seen_types->ga_data)[seen_types->ga_len * 2] = type;
+ ((type_T **)seen_types->ga_data)[seen_types->ga_len * 2 + 1] = copy;
+ ++seen_types->ga_len;
+
+ if (copy->tt_member != NULL)
+ copy->tt_member = copy_type_deep_rec(copy->tt_member,
+ type_gap, seen_types);
+
+ if (type->tt_args != NULL)
+ for (int i = 0; i < type->tt_argcount; ++i)
+ copy->tt_args[i] = copy_type_deep_rec(copy->tt_args[i],
+ type_gap, seen_types);
+
+ return copy;
+}
+
+/*
+ * Make a deep copy of "type".
+ * When allocation fails returns "type".
+ */
+ static type_T *
+copy_type_deep(type_T *type, garray_T *type_gap)
+{
+ garray_T seen_types;
+ // stores type pairs : a type we have seen and the copy used
+ ga_init2(&seen_types, sizeof(type_T *) * 2, 20);
+
+ type_T *res = copy_type_deep_rec(type, type_gap, &seen_types);
+
+ ga_clear(&seen_types);
+ return res;
+}
+
void
clear_type_list(garray_T *gap)
{
|| (flags & TVTT_MORE_SPECIFIC) == 0
|| l->lv_type->tt_member != &t_any))
// make a copy, lv_type may be freed if the list is freed
- return copy_type(l->lv_type, type_gap);
+ return copy_type_deep(l->lv_type, type_gap);
if (l->lv_first == &range_list_item)
return &t_list_number;
if (l->lv_copyID == copyID)