Function edge_add

tools/json-graph/src/jgflib.c:151–158

}

static void edge_add(Graph g, Edge e)
{
  if (g->last_edge)
    g->last_edge->next = e;
  else
    g->edges = e;
  g->last_edge = e;
}

static void adj_edge_add(Node from, Edge e, Node to)
{