Did some clean up

[Mograsim.git] / era.mi / src / era / mi / logic / components / Merger.java

diff --git a/era.mi/src/era/mi/logic/components/Merger.java b/era.mi/src/era/mi/logic/components/Merger.java
index eb910a4..a738114 100644 (file)
--- a/era.mi/src/era/mi/logic/components/Merger.java
+++ b/era.mi/src/era/mi/logic/components/Merger.java
@@ -1,61 +1,82 @@
-package era.mi.logic.components;
-
-import era.mi.logic.Util;
-import era.mi.logic.Bit;
-import era.mi.logic.WireArray;
-import era.mi.logic.WireArrayObserver;
-
-@Deprecated
-public class Merger implements WireArrayObserver
-{
-       private WireArray out;
-       private WireArray[] inputs;
-       
-       //TODO: General problem with this concept; New inputs coming in at the same time override each other
-       
-       /**
-        * 
-        * @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)
-       {
-               this.inputs = inputs;
-               this.out = union;
-               
-               int length = 0;
-               for(WireArray input : inputs)
-               {
-                       length += input.length();
-                       input.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);
-       }
-
-       public WireArray getInput(int index)
-       {
-               return inputs[index];
-       }
-       
-       public WireArray getUnion()
-       {
-               return out;
-       }
-       
-       @Override
-       public void update(WireArray initiator)
-       {
-               compute(); //No inner delay
-       }
-}
+package era.mi.logic.components;\r
+\r
+import java.util.List;\r
+\r
+import era.mi.logic.Bit;\r
+import era.mi.logic.wires.WireArray;\r
+import era.mi.logic.wires.WireArray.WireArrayEnd;\r
+import era.mi.logic.wires.WireArrayObserver;\r
+\r
+public class Merger implements WireArrayObserver, Component\r
+{\r
+       private WireArrayEnd outI;\r
+       private WireArray[] inputs;\r
+       private int[] beginningIndex;\r
+\r
+       /**\r
+        * \r
+        * @param union  The output of merging n {@link WireArray}s into one. Must have length = a1.length() + a2.length() + ... + an.length().\r
+        * @param inputs The inputs to be merged into the union\r
+        */\r
+       public Merger(WireArray union, WireArray... inputs)\r
+       {\r
+               this.inputs = inputs;\r
+               this.outI = union.createInput();\r
+               this.beginningIndex = new int[inputs.length];\r
+\r
+               int length = 0;\r
+               for (int i = 0; i < inputs.length; i++)\r
+               {\r
+                       beginningIndex[i] = length;\r
+                       length += inputs[i].length;\r
+                       inputs[i].addObserver(this);\r
+               }\r
+\r
+               if (length != union.length)\r
+                       throw new IllegalArgumentException(\r
+                                       "The output of merging n WireArrays into one must have length = a1.length() + a2.length() + ... + an.length().");\r
+       }\r
+\r
+       public WireArray getInput(int index)\r
+       {\r
+               return inputs[index];\r
+       }\r
+\r
+       public WireArray getUnion()\r
+       {\r
+               return outI.owner;\r
+       }\r
+\r
+       @Override\r
+       public void update(WireArray initiator, Bit[] oldValues)\r
+       {\r
+               int index = find(initiator);\r
+               int beginning = beginningIndex[index];\r
+               outI.feedSignals(beginning, initiator.getValues());\r
+       }\r
+\r
+       private int find(WireArray w)\r
+       {\r
+               for (int i = 0; i < inputs.length; i++)\r
+                       if (inputs[i] == w)\r
+                               return i;\r
+               return -1;\r
+       }\r
+\r
+       public WireArray[] getInputs()\r
+       {\r
+               return inputs.clone();\r
+       }\r
+\r
+       @Override\r
+       public List<WireArray> getAllInputs()\r
+       {\r
+               return List.of(inputs);\r
+       }\r
+\r
+       @Override\r
+       public List<WireArray> getAllOutputs()\r
+       {\r
+               return List.of(outI.owner);\r
+       }\r
+}\r