era.mi/src/era/mi/logic/components/Splitter.java

   1 package era.mi.logic.components;
   2
   3 import era.mi.logic.Bit;
   4 import era.mi.logic.wires.WireArray;
   5 import era.mi.logic.wires.WireArrayObserver;
   6
   7 public class Splitter implements WireArrayObserver
   8 {
   9         private WireArray input;
  10         private WireArray[] outputs;
  11
  12         public Splitter(WireArray input, WireArray... outputs)
  13         {
  14                 this.input = input;
  15                 this.outputs = outputs;
  16                 input.addObserver(this);
  17                 int length = 0;
  18                 for(WireArray out : outputs)
  19                         length += out.length;
  20
  21                 if(input.length != length)
  22                         throw new IllegalArgumentException("The input of splitting one into n WireArrays must have length = a1.length() + a2.length() + ... + an.length().");
  23         }
  24
  25         protected void compute()
  26         {
  27                 int startIndex = 0;
  28                 Bit[] inputBits = input.getValues();
  29                 for(int i = 0; i < outputs.length; i++)
  30                 {
  31                         Bit[] outputBits = new Bit[outputs[i].length];
  32                         System.arraycopy(inputBits, startIndex, outputBits, 0, outputs[i].length);
  33                         outputs[i].feedSignals(outputBits);
  34                         startIndex += outputs[i].length;
  35                 }
  36         }
  37
  38         public WireArray getInput()
  39         {
  40                 return input;
  41         }
  42
  43         public WireArray[] getOutputs()
  44         {
  45                 return outputs.clone();
  46         }
  47
  48         @Override
  49         public void update(WireArray initiator)
  50         {
  51                 compute();
  52         }
  53 }