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

   1 package era.mi.logic.components;
   2
   3 import java.util.List;
   4
   5 import era.mi.logic.Bit;
   6 import era.mi.logic.Simulation;
   7 import era.mi.logic.wires.WireArray;
   8 import era.mi.logic.wires.WireArray.WireArrayEnd;
   9 import era.mi.logic.wires.WireArrayObserver;
  10
  11 public class Connector implements WireArrayObserver, Component
  12 {
  13         private boolean connected;
  14         private final WireArray a;
  15         private final WireArray b;
  16         private final WireArrayEnd aI;
  17         private final WireArrayEnd bI;
  18
  19         public Connector(WireArray a, WireArray b)
  20         {
  21                 if (a.length != b.length)
  22                         throw new IllegalArgumentException(String.format("WireArray width does not match: %d, %d", a.length, b.length));
  23                 this.a = a;
  24                 this.b = b;
  25                 a.addObserver(this);
  26                 b.addObserver(this);
  27                 aI = a.createInput();
  28                 bI = b.createInput();
  29         }
  30
  31         public void connect()
  32         {
  33                 connected = true;
  34                 update(a);
  35                 update(b);
  36         }
  37
  38         public void disconnect()
  39         {
  40                 connected = false;
  41                 aI.clearSignals();
  42                 bI.clearSignals();
  43         }
  44
  45         public void setConnection(boolean connected)
  46         {
  47                 if (connected)
  48                         connect();
  49                 else
  50                         disconnect();
  51         }
  52
  53         @Override
  54         public void update(WireArray initiator, Bit[] oldValues)
  55         {
  56                 if (connected)
  57                         Simulation.TIMELINE.addEvent(e -> update(initiator), 1);
  58         }
  59
  60         private void update(WireArray initiator)
  61         {
  62                 if (initiator == a)
  63                         bI.feedSignals(aI.wireValuesExcludingMe());
  64                 else
  65                         aI.feedSignals(bI.wireValuesExcludingMe());
  66         }
  67
  68         @Override
  69         public List<WireArray> getAllInputs()
  70         {
  71                 return List.of(a, b);
  72         }
  73
  74         @Override
  75         public List<WireArray> getAllOutputs()
  76         {
  77                 return List.of(a, b);
  78         }
  79 }