{
private Bit[] values;
public final int travelTime;
- private List<WireArrayObserver> observers = new ArrayList<WireArrayObserver>();
+ private List<WireObserver> observers = new ArrayList<WireObserver>();
public final int length;
private List<WireEnd> inputs = new ArrayList<WireEnd>();
Bit[] bits = input.getInputValues();
for (int i = 0; i < length; i++)
{
- if (Bit.Z.equals(bits[i]) || newValues[i].equals(bits[i]))
- continue;
- else if (Bit.Z.equals(newValues[i]))
- newValues[i] = bits[i];
- else
- newValues[i] = Bit.X;
+ newValues[i] = newValues[i].combineWith(bits[i]);
}
}
}
/**
- * Adds an {@link WireArrayObserver}, who will be notified when the value of the {@link Wire} is updated.
+ * Adds an {@link WireObserver}, who will be notified when the value of the {@link Wire} is updated.
*
- * @param ob The {@link WireArrayObserver} to be notified of changes.
- * @return true if the given {@link WireArrayObserver} was not already registered, false otherwise
+ * @param ob The {@link WireObserver} to be notified of changes.
+ * @return true if the given {@link WireObserver} was not already registered, false otherwise
*
* @author Fabian Stemmler
*/
- public boolean addObserver(WireArrayObserver ob)
+ public boolean addObserver(WireObserver ob)
{
return observers.add(ob);
}
private void notifyObservers(Bit[] oldValues)
{
- for (WireArrayObserver o : observers)
+ for (WireObserver o : observers)
o.update(this, oldValues);
}
*/
public WireEnd createEnd()
{
- return new WireEnd();
+ return new WireEnd(false);
+ }
+
+ /**
+ * Create a {@link WireEnd} object, which is tied to this {@link Wire}. This {@link WireEnd} cannot written to.
+ */
+ public WireEnd createReadOnlyEnd()
+ {
+ return new WireEnd(true);
}
private void registerInput(WireEnd toRegister)
/**
* A {@link WireEnd} 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
+ * {@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
*/
private boolean open;
private Bit[] inputValues;
- private WireEnd()
+ private WireEnd(boolean readOnly)
{
super();
open = true;
initValues();
- registerInput(this);
+ if (!readOnly)
+ registerInput(this);
}
private void initValues()
{
- inputValues = Bit.Z.makeArray(length);
+ inputValues = Bit.U.makeArray(length);
}
/**
*/
public void feedSignals(Bit... newValues)
{
- if (newValues.length == length)
- {
- feedSignals(0, newValues);
- } else
+ if (newValues.length != length)
throw new IllegalArgumentException(
String.format("Attempted to input %d bits instead of %d bits.", newValues.length, length));
+ feedSignals(0, newValues);
}
/**
{
return inputValues[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 WireEnd} is currently feeding into the associated {@link Wire}.
*/
public Bit[] getInputValues()
{
return getInputValues(0, length);
}
-
+
public Bit[] getInputValues(int start, int end)
{
int length = end - start;
{
return Wire.this.getValue(index);
}
-
+
/**
* @param index Index of the requested bit.
* @return The value of the indexed bit.
/**
* @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.
+ * @param end End of the wanted segment. (exclusive)
+ * @return The values of the segment of {@link Bit}s indexed.
*
* @author Fabian Stemmler
*/
{
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.
+ * @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
*/
{
return Wire.this.getSignedValue();
}
-
+
@Override
public String toString()
{
- return Arrays.toString(values);
- //return String.format("%s \nFeeding: %s", WireArray.this.toString(), Arrays.toString(inputValues));
+ return Arrays.toString(inputValues);
+ // return String.format("%s \nFeeding: %s", WireArray.this.toString(), Arrays.toString(inputValues));
}
- public void disconnect()
+ public void close()
{
inputs.remove(this);
open = false;
return length;
}
- public boolean addObserver(WireArrayObserver ob)
+ public boolean addObserver(WireObserver ob)
{
return Wire.this.addObserver(ob);
}
-
+
public Wire getWire()
{
return Wire.this;
}
}
-
+
@Override
public String toString()
{
return String.format("wire 0x%08x value: %s inputs: %s", hashCode(), Arrays.toString(values), inputs);
- //Arrays.toString(values), inputs.stream().map(i -> Arrays.toString(i.inputValues)).reduce((s1, s2) -> s1 + s2)
+ // Arrays.toString(values), inputs.stream().map(i -> Arrays.toString(i.inputValues)).reduce((s1, s2) -> s1 + s2)
}
public static WireEnd[] extractEnds(Wire[] w)
projects / Mograsim.git / blobdiff