Implemented some infrastructure for MPROMs

[Mograsim.git] / plugins / net.mograsim.machine / src / net / mograsim / machine / mi / AssignableMPROM.java

diff --git a/plugins/net.mograsim.machine/src/net/mograsim/machine/mi/AssignableMPROM.java b/plugins/net.mograsim.machine/src/net/mograsim/machine/mi/AssignableMPROM.java
new file mode 100644 (file)
index 0000000..0405013
--- /dev/null
+++ b/plugins/net.mograsim.machine/src/net/mograsim/machine/mi/AssignableMPROM.java
@@ -0,0 +1,99 @@
+package net.mograsim.machine.mi;
+
+import java.math.BigInteger;
+import java.util.HashSet;
+import java.util.Set;
+
+import net.mograsim.logic.core.types.BitVector;
+import net.mograsim.machine.Memory.MemoryCellModifiedListener;
+
+public class AssignableMPROM implements MPROM, MemoryCellModifiedListener
+{
+
+       private Set<MemoryCellModifiedListener> observers = new HashSet<>();
+
+       private Set<MPROMReassignedListener> reassignmentListeners = new HashSet<>();
+       private MPROM real = null;
+
+       public AssignableMPROM(MPROM standardMPROM)
+       {
+               real = standardMPROM;
+               real.registerCellModifiedListener(this);
+       }
+
+       public void bind(MPROM real)
+       {
+               this.real.deregisterCellModifiedListener(this);
+               this.real = real;
+               real.registerCellModifiedListener(this);
+               notifyMemoryChanged(-1);
+               notifyMemoryReassigned(real);
+       }
+
+       @Override
+       public BitVector getCell(long address)
+       {
+               return real.getCell(address);
+       }
+
+       @Override
+       public void setCell(long address, BitVector data)
+       {
+               real.setCell(address, data);
+       }
+
+       @Override
+       public BigInteger getCellAsBigInteger(long address)
+       {
+               return real.getCellAsBigInteger(address);
+       }
+
+       @Override
+       public void registerCellModifiedListener(MemoryCellModifiedListener ob)
+       {
+               observers.add(ob);
+       }
+
+       @Override
+       public void deregisterCellModifiedListener(MemoryCellModifiedListener ob)
+       {
+               observers.remove(ob);
+       }
+
+       private void notifyMemoryChanged(long address)
+       {
+               observers.forEach(o -> o.update(address));
+       }
+
+       @Override
+       public MPROMDefinition getDefinition()
+       {
+               return real.getDefinition();
+       }
+
+       @Override
+       public void update(long address)
+       {
+               notifyMemoryChanged(address);
+       }
+
+       public void registerMemoryReassignedListener(MPROMReassignedListener listener)
+       {
+               reassignmentListeners.add(listener);
+       }
+
+       public void deregisterMemoryReassignedListener(MPROMReassignedListener listener)
+       {
+               reassignmentListeners.remove(listener);
+       }
+
+       private void notifyMemoryReassigned(MPROM newAssignee)
+       {
+               reassignmentListeners.forEach(l -> l.reassigned(newAssignee));
+       }
+
+       public static interface MPROMReassignedListener
+       {
+               public void reassigned(MPROM newAssignee);
+       }
+}