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