net.mograsim.logic.core/src/net/mograsim/logic/core/components/CoreBitDisplay.java

   1 package net.mograsim.logic.core.components;
   2
   3 import java.util.ArrayList;
   4 import java.util.Collection;
   5 import java.util.List;
   6
   7 import net.mograsim.logic.core.LogicObservable;
   8 import net.mograsim.logic.core.LogicObserver;
   9 import net.mograsim.logic.core.timeline.Timeline;
  10 import net.mograsim.logic.core.types.Bit;
  11 import net.mograsim.logic.core.types.BitVector;
  12 import net.mograsim.logic.core.wires.CoreWire.ReadEnd;
  13 import net.mograsim.logic.core.wires.CoreWire.ReadWriteEnd;
  14
  15 public class CoreBitDisplay extends BasicCoreComponent implements LogicObservable
  16 {
  17         private Collection<LogicObserver> observers;
  18         private final ReadEnd in;
  19         private BitVector displayedValue;
  20
  21         public CoreBitDisplay(Timeline timeline, ReadEnd in)
  22         {
  23                 super(timeline, 1);
  24                 observers = new ArrayList<>();
  25                 this.in = in;
  26                 in.registerObserver(this);
  27                 compute();
  28         }
  29
  30         @Override
  31         protected void compute()
  32         {
  33                 displayedValue = in.getValues();
  34                 notifyObservers();
  35         }
  36
  37         public BitVector getDisplayedValue()
  38         {
  39                 return displayedValue;
  40         }
  41
  42         public boolean isDisplaying(Bit... values)
  43         {
  44                 return displayedValue.equals(BitVector.of(values));
  45         }
  46
  47         @Override
  48         public List<ReadEnd> getAllInputs()
  49         {
  50                 return List.of(in);
  51         }
  52
  53         @Override
  54         public List<ReadWriteEnd> getAllOutputs()
  55         {
  56                 return List.of();
  57         }
  58
  59         @Override
  60         public void registerObserver(LogicObserver ob)
  61         {
  62                 observers.add(ob);
  63         }
  64
  65         @Override
  66         public void deregisterObserver(LogicObserver ob)
  67         {
  68                 observers.remove(ob);
  69         }
  70
  71         @Override
  72         public void notifyObservers()
  73         {
  74                 observers.forEach(ob -> ob.update(this));
  75         }
  76 }