package era.mi.logic.wires;
-import static era.mi.logic.types.Bit.*;
+import static era.mi.logic.types.Bit.U;
+import static era.mi.logic.types.Bit.Z;
import java.util.ArrayList;
import java.util.List;
{
private BitVector values;
public final int travelTime;
- private List<WireObserver> observers = new ArrayList<WireObserver>();
+ private List<ReadEnd> attached = new ArrayList<ReadEnd>();
public final int length;
- private List<WireEnd> inputs = new ArrayList<WireEnd>();
+ private List<ReadWriteEnd> inputs = new ArrayList<ReadWriteEnd>();
public Wire(int length, int travelTime)
{
private void recalculateMultipleInputs()
{
BitVectorMutator mutator = BitVectorMutator.empty();
- for (WireEnd wireArrayEnd : inputs)
+ for (ReadWriteEnd wireArrayEnd : inputs)
mutator.join(wireArrayEnd.getInputValues());
setNewValues(mutator.get());
}
case Z:
case X:
return 0; // TODO: Proper handling for getUnsignedValue(), if not all bits are 1 or 0;
- // Random number?
case ONE:
val |= mask;
break;
*
* @author Fabian Stemmler
*/
- public boolean addObserver(WireObserver ob)
+ private void attachEnd(ReadEnd end)
{
- return observers.add(ob);
+ attached.add(end);
+ }
+
+ private void detachEnd(ReadEnd end)
+ {
+ attached.remove(end);
}
private void notifyObservers(BitVector oldValues)
{
- for (WireObserver o : observers)
- o.update(this, oldValues);
+ for (ReadEnd o : attached)
+ o.update(oldValues);
}
/**
- * Create and register a {@link WireEnd} object, which is tied to this {@link Wire}.
+ * Create and register a {@link ReadWriteEnd} object, which is tied to this {@link Wire}. This {@link ReadWriteEnd} can be written to.
*/
- public WireEnd createEnd()
+ public ReadWriteEnd createEnd()
{
- return new WireEnd(false);
+ return new ReadWriteEnd();
}
/**
- * Create a {@link WireEnd} object, which is tied to this {@link Wire}. This {@link WireEnd} cannot written to.
+ * Create a {@link ReadEnd} object, which is tied to this {@link Wire}. This {@link ReadEnd} cannot be written to.
*/
- public WireEnd createReadOnlyEnd()
+ public ReadEnd createReadOnlyEnd()
{
- return new WireEnd(true);
+ return new ReadEnd();
}
- private void registerInput(WireEnd toRegister)
+ private void registerInput(ReadWriteEnd toRegister)
{
inputs.add(toRegister);
}
/**
- * A {@link WireEnd} feeds a constant signal into the {@link Wire} it is tied to. The combination of all inputs determines the
+ * A {@link ReadEnd} feeds a constant signal into the {@link Wire} it is tied to. The combination of all inputs determines the
* {@link Wire}s final value. X dominates all other inputs Z does not affect the final value, unless there are no other inputs than Z 0
* and 1 turn into X when they are mixed
*
* @author Fabian Stemmler
*/
- public class WireEnd
+ public class ReadEnd
+ {
+ private List<WireObserver> observers = new ArrayList<WireObserver>();
+
+ private ReadEnd()
+ {
+ super();
+ Wire.this.attachEnd(this);
+ }
+
+ public void update(BitVector oldValues)
+ {
+ for (WireObserver ob : observers)
+ ob.update(this, oldValues);
+ }
+
+ /**
+ * Included for convenient use on {@link Wire}s of length 1.
+ *
+ * @return The value of bit 0.
+ *
+ * @author Fabian Stemmler
+ */
+ public Bit getValue()
+ {
+ return Wire.this.getValue();
+ }
+
+ /**
+ * @param index Index of the requested bit.
+ * @return The value of the indexed bit.
+ *
+ * @author Fabian Stemmler
+ */
+ public Bit getValue(int index)
+ {
+ return Wire.this.getValue(index);
+ }
+
+ /**
+ * @param index Index of the requested bit.
+ * @return The value of the indexed bit.
+ *
+ * @author Fabian Stemmler
+ */
+ public BitVector getValues()
+ {
+ return Wire.this.getValues();
+ }
+
+ /**
+ * @param start Start of the wanted segment. (inclusive)
+ * @param end End of the wanted segment. (exclusive)
+ * @return The values of the segment of {@link Bit}s indexed.
+ *
+ * @author Fabian Stemmler
+ */
+ public BitVector getValues(int start, int end)
+ {
+ return Wire.this.getValues(start, end);
+ }
+
+ /**
+ * The {@link Wire} is interpreted as an unsigned integer with n bits.
+ *
+ * @return <code>true</code> if all bits are either <code>Bit.ONE</code> or <code>Bit.ZERO</code> (they do not all have to have the
+ * same value), not <code>Bit.X</code> or <code>Bit.Z</code>. <code>false</code> is returned otherwise.
+ *
+ * @author Fabian Stemmler
+ */
+ public boolean hasNumericValue()
+ {
+ return Wire.this.hasNumericValue();
+ }
+
+ /**
+ * The {@link Wire} is interpreted as an unsigned integer with n bits.
+ *
+ * @return The unsigned value of the {@link Wire}'s bits, where value 0 corresponds with 2^0, value 1 is 2^1 and so on.
+ *
+ * @author Fabian Stemmler
+ */
+ public long getUnsignedValue()
+ {
+ return Wire.this.getUnsignedValue();
+ }
+
+ /**
+ * The {@link Wire} is interpreted as a signed integer with n bits.
+ *
+ * @return The signed value of the {@link Wire}'s bits, where value 0 corresponds with 2^0, value 1 is 2^1 and so on.
+ *
+ * @author Fabian Stemmler
+ */
+ public long getSignedValue()
+ {
+ return Wire.this.getSignedValue();
+ }
+
+ @Override
+ public String toString()
+ {
+ return Wire.this.toString();
+ }
+
+ public void close()
+ {
+ inputs.remove(this);
+ detachEnd(this);
+ recalculate();
+ }
+
+ public int length()
+ {
+ return length;
+ }
+
+ public boolean addObserver(WireObserver ob)
+ {
+ return observers.add(ob);
+ }
+
+ public Wire getWire()
+ {
+ return Wire.this;
+ }
+ }
+
+ public class ReadWriteEnd extends ReadEnd
{
private boolean open;
private BitVector inputValues;
- private WireEnd(boolean readOnly)
+ private ReadWriteEnd()
{
super();
- open = !readOnly; // TODO: that makes sense, doesn't it?
+ open = true;
initValues();
- if (!readOnly)
- registerInput(this);
+ registerInput(this);
}
private void initValues()
}
/**
- * @return The value (of bit 0) the {@link WireEnd} is currently feeding into the associated {@link Wire}.
+ * @return The value (of bit 0) the {@link ReadEnd} is currently feeding into the associated {@link Wire}.
*/
public Bit getInputValue()
{
}
/**
- * @return The value which the {@link WireEnd} is currently feeding into the associated {@link Wire} at the indexed {@link Bit}.
+ * @return The value which the {@link ReadEnd} is currently feeding into the associated {@link Wire} at the indexed {@link Bit}.
*/
public Bit getInputValue(int index)
{
}
/**
- * @return A copy (safe to modify) of the values the {@link WireEnd} is currently feeding into the associated {@link Wire}.
+ * @return A copy (safe to modify) of the values the {@link ReadEnd} is currently feeding into the associated {@link Wire}.
*/
public BitVector getInputValues()
{
}
/**
- * {@link WireEnd} now feeds Z into the associated {@link Wire}.
+ * {@link ReadEnd} now feeds Z into the associated {@link Wire}.
*/
public void clearSignals()
{
public BitVector wireValuesExcludingMe()
{
BitVectorMutator mutator = BitVectorMutator.empty();
- for (WireEnd wireEnd : inputs)
+ for (ReadWriteEnd wireEnd : inputs)
{
if (wireEnd == this)
continue;
return mutator.get();
}
- /**
- * Included for convenient use on {@link Wire}s of length 1.
- *
- * @return The value of bit 0.
- *
- * @author Fabian Stemmler
- */
- public Bit getValue()
- {
- return Wire.this.getValue();
- }
-
- /**
- * @param index Index of the requested bit.
- * @return The value of the indexed bit.
- *
- * @author Fabian Stemmler
- */
- public Bit getValue(int index)
- {
- return Wire.this.getValue(index);
- }
-
- /**
- * @param index Index of the requested bit.
- * @return The value of the indexed bit.
- *
- * @author Fabian Stemmler
- */
- public BitVector getValues()
- {
- return Wire.this.getValues();
- }
-
- /**
- * @param start Start of the wanted segment. (inclusive)
- * @param end End of the wanted segment. (exclusive)
- * @return The values of the segment of {@link Bit}s indexed.
- *
- * @author Fabian Stemmler
- */
- public BitVector getValues(int start, int end)
- {
- return Wire.this.getValues(start, end);
- }
-
- /**
- * The {@link Wire} is interpreted as an unsigned integer with n bits.
- *
- * @return <code>true</code> if all bits are either <code>Bit.ONE</code> or <code>Bit.ZERO</code> (they do not all have to have the
- * same value), not <code>Bit.X</code> or <code>Bit.Z</code>. <code>false</code> is returned otherwise.
- *
- * @author Fabian Stemmler
- */
- public boolean hasNumericValue()
- {
- return Wire.this.hasNumericValue();
- }
-
- /**
- * The {@link Wire} is interpreted as an unsigned integer with n bits.
- *
- * @return The unsigned value of the {@link Wire}'s bits, where value 0 corresponds with 2^0, value 1 is 2^1 and so on.
- *
- * @author Fabian Stemmler
- */
- public long getUnsignedValue()
- {
- return Wire.this.getUnsignedValue();
- }
-
- /**
- * The {@link Wire} is interpreted as a signed integer with n bits.
- *
- * @return The signed value of the {@link Wire}'s bits, where value 0 corresponds with 2^0, value 1 is 2^1 and so on.
- *
- * @author Fabian Stemmler
- */
- public long getSignedValue()
- {
- return Wire.this.getSignedValue();
- }
-
@Override
public String toString()
{
return inputValues.toString();
- // return String.format("%s \nFeeding: %s", WireArray.this.toString(), Arrays.toString(inputValues));
- }
-
- public void close()
- {
- inputs.remove(this);
- open = false;
- }
-
- public int length()
- {
- return length;
- }
-
- public boolean addObserver(WireObserver ob)
- {
- return Wire.this.addObserver(ob);
- }
-
- public Wire getWire()
- {
- return Wire.this;
}
}
// Arrays.toString(values), inputs.stream().map(i -> Arrays.toString(i.inputValues)).reduce((s1, s2) -> s1 + s2)
}
- public static WireEnd[] extractEnds(Wire[] w)
+ public static ReadEnd[] extractEnds(Wire[] w)
{
- WireEnd[] inputs = new WireEnd[w.length];
+ ReadEnd[] inputs = new ReadEnd[w.length];
for (int i = 0; i < w.length; i++)
inputs[i] = w[i].createEnd();
return inputs;
projects / Mograsim.git / blobdiff