private BitVector values;
public final int travelTime;
private List<ReadEnd> attached = new ArrayList<>();
- public final int length;
+ public final int width;
List<ReadWriteEnd> inputs = new ArrayList<>();
Timeline timeline;
- public Wire(Timeline timeline, int length, int travelTime)
+ public Wire(Timeline timeline, int width, int travelTime)
{
- this(timeline, length, travelTime, null);
+ this(timeline, width, travelTime, null);
}
- public Wire(Timeline timeline, int length, int travelTime, String name)
+ public Wire(Timeline timeline, int width, int travelTime, String name)
{
- if (length < 1)
+ if (width < 1)
throw new IllegalArgumentException(
- String.format("Tried to create an array of wires with length %d, but a length of less than 1 makes no sense.", length));
+ String.format("Tried to create an array of wires with width %d, but a width of less than 1 makes no sense.", width));
this.name = name;
this.timeline = timeline;
- this.length = length;
+ this.width = width;
this.travelTime = travelTime;
initValues();
}
private void initValues()
{
- values = U.toVector(length);
+ values = U.toVector(width);
}
private void setNewValues(BitVector newValues)
{
if (values.equals(newValues))
return;
-// BitVector oldValues = values;
values = newValues;
notifyObservers();
}
void recalculate()
{
- if (inputs.size() == 0)
- setNewValues(BitVector.of(Bit.U, length));
+ if (inputs.isEmpty())
+ setNewValues(U.toVector(width));
else
{
BitVectorMutator mutator = BitVectorMutator.empty();
* 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.
+ * value), not <code>Bit.U</code>, <code>Bit.X</code> or <code>Bit.Z</code>. <code>false</code> is returned otherwise.
*
* @author Fabian Stemmler
*/
public boolean hasNumericValue()
{
- for (Bit b : values)
- {
- if (b != Bit.ZERO && b != Bit.ONE)
- return false;
- }
- return true;
+ return values.isBinary();
}
/**
public long getSignedValue()
{
long val = getUnsignedValue();
- long mask = 1 << (length - 1);
+ long mask = 1 << (width - 1);
if ((mask & val) != 0)
{
- int shifts = 64 - length;
+ int shifts = 64 - width;
return (val << shifts) >> shifts;
}
return val;
*
* @author Fabian Stemmler
*/
- void attachEnd(ReadEnd end)
+ boolean attachEnd(ReadEnd end)
{
- attached.add(end);
+ return attached.add(end);
}
void detachEnd(ReadEnd end)
private void notifyObservers()
{
- attached.forEach(r -> r.update());
+ attached.forEach(ReadEnd::update);
}
/**
}
/**
- * Included for convenient use on {@link Wire}s of length 1.
+ * Included for convenient use on {@link Wire}s of width 1.
*
* @return The value of bit 0.
*
recalculate();
}
- public int length()
+ public int width()
{
- return length;
+ return width;
}
public Wire getWire()
public class ReadWriteEnd extends ReadEnd
{
- private boolean open, isWriting;
+ private boolean open;
+ private boolean isWriting;
private BitVector inputValues;
ReadWriteEnd()
private void initValues()
{
- inputValues = U.toVector(length);
+ inputValues = U.toVector(width);
}
/**
public void feedSignals(BitVector newValues)
{
- if (newValues.length() != length)
+ if (newValues.length() != width)
throw new IllegalArgumentException(
- String.format("Attempted to input %d bits instead of %d bits.", newValues.length(), length));
+ String.format("Attempted to input %d bits instead of %d bits.", newValues.length(), width));
if (!open)
- throw new RuntimeException("Attempted to write to closed WireArrayEnd.");
+ throw new IllegalStateException("Attempted to write to closed WireArrayEnd.");
timeline.addEvent(e -> setValues(newValues), travelTime);
}
public void feedSignals(int startingBit, BitVector bitVector)
{
if (!open)
- throw new RuntimeException("Attempted to write to closed WireArrayEnd.");
+ throw new IllegalStateException("Attempted to write to closed WireArrayEnd.");
timeline.addEvent(e -> setValues(startingBit, bitVector), travelTime);
}
*/
public void clearSignals()
{
- feedSignals(Z.toVector(length));
+ feedSignals(Z.toVector(width));
}
public BitVector wireValuesExcludingMe()
ReadWriteEnd rA = a.createReadWriteEnd(), rB = b.createReadWriteEnd();
rA.setWriting(false);
rB.setWriting(false);
- rA.setValues(BitVector.of(Bit.Z, a.length));
- rB.setValues(BitVector.of(Bit.Z, b.length));
+ rA.setValues(BitVector.of(Bit.Z, a.width));
+ rB.setValues(BitVector.of(Bit.Z, b.width));
Fusion aF = new Fusion(rB, fromA, fromB, length), bF = new Fusion(rA, fromB, fromA, length);
rA.registerObserver(aF);
rB.registerObserver(bF);
*/
public static void fuse(Wire a, Wire b)
{
- fuse(a, b, 0, 0, a.length);
+ fuse(a, b, 0, 0, a.width);
}
private static class Fusion implements LogicObserver