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

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