From c2b9d350aabd41d0b2a72fc0baf453804b7becc8 Mon Sep 17 00:00:00 2001
From: Berack96 <giacomobertolazzi7@gmail.com>
Date: Fri, 14 Feb 2025 16:01:40 +0100
Subject: [PATCH] Add copyOf method to Net class for creating deep copies of
 nets

---
 .../java/net/berack/upo/valpre/sim/Net.java   | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/src/main/java/net/berack/upo/valpre/sim/Net.java b/src/main/java/net/berack/upo/valpre/sim/Net.java
index 1246972..fec3e44 100644
--- a/src/main/java/net/berack/upo/valpre/sim/Net.java
+++ b/src/main/java/net/berack/upo/valpre/sim/Net.java
@@ -244,6 +244,29 @@ public final class Net implements Iterable<ServerNode> {
         }
     }
 
+    /**
+     * Create a copy of the net passed as input.
+     * The new net will have the same nodes and connections.
+     * 
+     * @param net the net to copy
+     * @return a new Net object
+     */
+    public static Net copyOf(Net net) {
+        var newNet = new Net();
+
+        for (var index = 0; index < net.size(); index++) {
+            var node = net.servers.get(index);
+            var conn = net.connections.get(index);
+            conn = new ArrayList<>(conn);
+
+            newNet.indices.put(node, index);
+            newNet.servers.add(node);
+            newNet.connections.add(conn);
+        }
+
+        return newNet;
+    }
+
     @Override
     public String toString() {
         var builder = new StringBuilder();