From c52d27c206a1d896a40e06bce65abdeb79db8b19 Mon Sep 17 00:00:00 2001
From: Christian Femers <femers@in.tum.de>
Date: Sun, 19 May 2019 22:26:09 +0200
Subject: [PATCH] Made Connector an Component and more useful

---
 .../era/mi/logic/components/Connector.java    | 79 +++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 era.mi/src/era/mi/logic/components/Connector.java

diff --git a/era.mi/src/era/mi/logic/components/Connector.java b/era.mi/src/era/mi/logic/components/Connector.java
new file mode 100644
index 00000000..17c9f3c8
--- /dev/null
+++ b/era.mi/src/era/mi/logic/components/Connector.java
@@ -0,0 +1,79 @@
+package era.mi.logic.components;
+
+import java.util.List;
+
+import era.mi.logic.Bit;
+import era.mi.logic.Simulation;
+import era.mi.logic.wires.WireArray;
+import era.mi.logic.wires.WireArray.WireArrayEnd;
+import era.mi.logic.wires.WireArrayObserver;
+
+public class Connector implements WireArrayObserver, Component
+{
+	private boolean connected;
+	private final WireArray a;
+	private final WireArray b;
+	private final WireArrayEnd aI;
+	private final WireArrayEnd bI;
+
+	public Connector(WireArray a, WireArray b)
+	{
+		if (a.length != b.length)
+			throw new IllegalArgumentException(String.format("WireArray width does not match: %d, %d", a.length, b.length));
+		this.a = a;
+		this.b = b;
+		a.addObserver(this);
+		b.addObserver(this);
+		aI = a.createInput();
+		bI = b.createInput();
+	}
+
+	public void connect()
+	{
+		connected = true;
+		update(a);
+		update(b);
+	}
+
+	public void disconnect()
+	{
+		connected = false;
+		aI.clearSignals();
+		bI.clearSignals();
+	}
+
+	public void setConnection(boolean connected)
+	{
+		if (connected)
+			connect();
+		else
+			disconnect();
+	}
+
+	@Override
+	public void update(WireArray initiator, Bit[] oldValues)
+	{
+		if (connected)
+			Simulation.TIMELINE.addEvent(e -> update(initiator), 1);
+	}
+
+	private void update(WireArray initiator)
+	{
+		if (initiator == a)
+			bI.feedSignals(aI.wireValuesExcludingMe());
+		else
+			aI.feedSignals(bI.wireValuesExcludingMe());
+	}
+
+	@Override
+	public List<WireArray> getAllInputs()
+	{
+		return List.of(a, b);
+	}
+
+	@Override
+	public List<WireArray> getAllOutputs()
+	{
+		return List.of(a, b);
+	}
+}
-- 
2.17.1