X-Git-Url: https://mograsim.net/gitweb/?a=blobdiff_plain;f=era.mi%2Fsrc%2Fera%2Fmi%2Flogic%2Fcomponents%2FMerger.java;h=1efcf8ad276cf0d6d4922ed92bda4a466af458fc;hb=74aebd92f41d03f4a44c9a455ef8c05465136412;hp=eb910a4f87caf0e79a8d71eafcd4c7305a4fdf16;hpb=a4c5cfb856026771dfcf31eb22434b8b6ff20ad4;p=Mograsim.git

diff --git a/era.mi/src/era/mi/logic/components/Merger.java b/era.mi/src/era/mi/logic/components/Merger.java
index eb910a4f..1efcf8ad 100644
--- a/era.mi/src/era/mi/logic/components/Merger.java
+++ b/era.mi/src/era/mi/logic/components/Merger.java
@@ -1,61 +1,74 @@
 package era.mi.logic.components;
 
-import era.mi.logic.Util;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
 import era.mi.logic.Bit;
-import era.mi.logic.WireArray;
-import era.mi.logic.WireArrayObserver;
+import era.mi.logic.wires.WireArray;
+import era.mi.logic.wires.WireArray.WireArrayInput;
+import era.mi.logic.wires.WireArrayObserver;
 
-@Deprecated
-public class Merger implements WireArrayObserver
-{
-	private WireArray out;
+public class Merger implements WireArrayObserver, Component {
+	private WireArrayInput outI;
 	private WireArray[] inputs;
-	
-	//TODO: General problem with this concept; New inputs coming in at the same time override each other
-	
+	private int[] beginningIndex;
+
 	/**
 	 * 
-	 * @param union The output of merging n {@link WireArray}s into one. Must have length = a1.length() + a2.length() + ... + an.length().
+	 * @param union  The output of merging n {@link WireArray}s into one. Must have length = a1.length() + a2.length() + ... + an.length().
 	 * @param inputs The inputs to be merged into the union
 	 */
-	public Merger(WireArray union, WireArray... inputs)
-	{
+	public Merger(WireArray union, WireArray... inputs) {
 		this.inputs = inputs;
-		this.out = union;
-		
+		this.outI = union.createInput();
+		this.beginningIndex = new int[inputs.length];
+
 		int length = 0;
-		for(WireArray input : inputs)
-		{
-			length += input.length();
-			input.addObserver(this);
+		for (int i = 0; i < inputs.length; i++) {
+			beginningIndex[i] = length;
+			length += inputs[i].length;
+			inputs[i].addObserver(this);
 		}
-			
-		if(length != union.length())
-			throw new IllegalArgumentException("The output of merging n WireArrays into one must have length = a1.length() + a2.length() + ... + an.length().");
-	}
 
-	protected void compute()
-	{
-		Bit[][] bits = new Bit[inputs.length][];
-		for(int i = 0; i < inputs.length; i++)
-			bits[i] = inputs[i].getValues();
-		Bit[] newOut = Util.concat(bits);
-		out.feedSignals(newOut);
+		if (length != union.length)
+			throw new IllegalArgumentException(
+					"The output of merging n WireArrays into one must have length = a1.length() + a2.length() + ... + an.length().");
 	}
 
-	public WireArray getInput(int index)
-	{
+	public WireArray getInput(int index) {
 		return inputs[index];
 	}
-	
-	public WireArray getUnion()
-	{
-		return out;
+
+	public WireArray getUnion() {
+		return outI.owner;
+	}
+
+	@Override
+	public void update(WireArray initiator, Bit[] oldValues) {
+		int index = find(initiator);
+		int beginning = beginningIndex[index];
+		outI.feedSignals(beginning, initiator.getValues());
+	}
+
+	private int find(WireArray w) {
+		for (int i = 0; i < inputs.length; i++)
+			if (inputs[i] == w)
+				return i;
+		return -1;
+	}
+
+	public WireArray[] getInputs() {
+		return inputs.clone();
+	}
+
+	@Override
+	public List<WireArray> getAllInputs() {
+		return Collections.unmodifiableList(Arrays.asList(inputs));
 	}
-	
+
 	@Override
-	public void update(WireArray initiator)
-	{
-		compute(); //No inner delay
+	public List<WireArray> getAllOutputs() {
+		return Collections.unmodifiableList(Arrays.asList(outI.owner));
 	}
 }