era.mi/src/net/mograsim/logic/core/components/Splitter.java

   1 package net.mograsim.logic.core.components;
   2
   3 import java.util.List;
   4
   5 import net.mograsim.logic.core.timeline.Timeline;
   6 import net.mograsim.logic.core.types.BitVector;
   7 import net.mograsim.logic.core.wires.WireObserver;
   8 import net.mograsim.logic.core.wires.Wire.ReadEnd;
   9 import net.mograsim.logic.core.wires.Wire.ReadWriteEnd;
  10
  11 public class Splitter extends Component implements WireObserver
  12 {
  13         private ReadEnd input;
  14         private ReadWriteEnd[] outputs;
  15
  16         public Splitter(Timeline timeline, ReadEnd input, ReadWriteEnd... outputs)
  17         {
  18                 super(timeline);
  19                 this.input = input;
  20                 this.outputs = outputs;
  21                 input.addObserver(this);
  22                 int length = 0;
  23                 for (ReadEnd out : outputs)
  24                         length += out.length();
  25
  26                 if (input.length() != length)
  27                         throw new IllegalArgumentException(
  28                                         "The input of splitting one into n WireArrays must have length = a1.length() + a2.length() + ... + an.length().");
  29         }
  30
  31         protected void compute()
  32         {
  33                 BitVector inputBits = input.getValues();
  34                 int startIndex = 0;
  35                 for (int i = 0; i < outputs.length; i++)
  36                 {
  37                         outputs[i].feedSignals(inputBits.subVector(startIndex, startIndex + outputs[i].length()));
  38                         startIndex += outputs[i].length();
  39                 }
  40         }
  41
  42         @Override
  43         public void update(ReadEnd initiator, BitVector oldValues)
  44         {
  45                 compute();
  46         }
  47
  48         @Override
  49         public List<ReadEnd> getAllInputs()
  50         {
  51                 return List.of(input);
  52         }
  53
  54         @Override
  55         public List<ReadWriteEnd> getAllOutputs()
  56         {
  57                 return List.of(outputs);
  58         }
  59 }