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

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