result = a->weight - b->weight;
- if(result)
+ if(result) {
return result;
+ }
result = strcmp(a->from->name, b->from->name);
- if(result)
+ if(result) {
return result;
+ }
return strcmp(a->to->name, b->to->name);
}
}
void exit_edges(meshlink_handle_t *mesh) {
- splay_delete_tree(mesh->edges);
+ if(mesh->edges) {
+ splay_delete_tree(mesh->edges);
+ }
+
+ mesh->edges = NULL;
}
/* Creation and deletion of connection elements */
e->reverse = lookup_edge(e->to, e->from);
- if(e->reverse)
+ if(e->reverse) {
e->reverse->reverse = e;
+ }
}
void edge_del(meshlink_handle_t *mesh, edge_t *e) {
- if(e->reverse)
+ if(e->reverse) {
e->reverse->reverse = NULL;
+ }
splay_delete(mesh->edges, e);
splay_delete(e->from->edge_tree, e);
}
edge_t *lookup_edge(node_t *from, node_t *to) {
+ assert(from);
+ assert(to);
+
edge_t v;
v.from = from;