plugins/net.mograsim.machine/src/net/mograsim/machine/mi/AssignableMicroInstructionMemory.java

   1 package net.mograsim.machine.mi;
   2
   3 import java.util.HashSet;
   4 import java.util.Set;
   5
   6 import net.mograsim.machine.MemoryObserver;
   7
   8 public class AssignableMicroInstructionMemory implements MicroInstructionMemory, MemoryObserver
   9 {
  10         private Set<MemoryObserver> observers = new HashSet<>();
  11         MicroInstructionMemory real = null;
  12
  13         public AssignableMicroInstructionMemory(StandardMicroInstructionMemory standardMicroInstructionMemory)
  14         {
  15                 real = standardMicroInstructionMemory;
  16                 real.registerObserver(this);
  17         }
  18
  19         public void bind(MicroInstructionMemory real)
  20         {
  21                 this.real.deregisterObserver(this);
  22                 this.real = real;
  23                 real.registerObserver(this);
  24                 notifyObservers(-1);
  25         }
  26
  27         @Override
  28         public MicroInstruction getCell(long address)
  29         {
  30                 return real.getCell(address);
  31         }
  32
  33         @Override
  34         public void setCell(long address, MicroInstruction data)
  35         {
  36                 real.setCell(address, data);
  37         }
  38
  39         @Override
  40         public void registerObserver(MemoryObserver ob)
  41         {
  42                 observers.add(ob);
  43         }
  44
  45         @Override
  46         public void deregisterObserver(MemoryObserver ob)
  47         {
  48                 observers.remove(ob);
  49         }
  50
  51         @Override
  52         public void notifyObservers(long address)
  53         {
  54                 observers.forEach(o -> o.update(address));
  55         }
  56
  57         @Override
  58         public MicroInstructionMemoryDefinition getDefinition()
  59         {
  60                 return real.getDefinition();
  61         }
  62
  63         @Override
  64         public void update(long address)
  65         {
  66                 notifyObservers(address);
  67         }
  68 }