package era.mi.logic.wires;\r
\r
+import java.io.Closeable;\r
import java.util.ArrayList;\r
import java.util.Arrays;\r
import java.util.Iterator;\r
public final int travelTime;\r
private List<WireArrayObserver> observers = new ArrayList<WireArrayObserver>();\r
public final int length;\r
- private List<WireArrayInput> inputs = new ArrayList<WireArrayInput>();\r
+ private List<WireArrayEnd> inputs = new ArrayList<WireArrayEnd>();\r
\r
public WireArray(int length, int travelTime)\r
{\r
if (length < 1)\r
- 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));\r
+ throw new IllegalArgumentException(\r
+ String.format("Tried to create an array of wires with length %d, but a length of less than 1 makes no sense.", length));\r
this.length = length;\r
this.travelTime = travelTime;\r
initValues();\r
\r
private void initValues()\r
{\r
- values = Bit.Z.makeArray(length);\r
+ values = Bit.U.makeArray(length);\r
}\r
\r
private void recalculateSingleInput()\r
{\r
- WireArrayInput input = inputs.get(0);\r
+ WireArrayEnd input = inputs.get(0);\r
if (!Arrays.equals(input.getValues(), values))\r
{\r
Bit[] oldValues = values.clone();\r
\r
private void recalculateMultipleInputs()\r
{\r
- Iterator<WireArrayInput> it = inputs.iterator();\r
+ Iterator<WireArrayEnd> it = inputs.iterator();\r
Bit[] newValues = it.next().inputValues.clone();\r
\r
while (it.hasNext())\r
{\r
- WireArrayInput input = it.next();\r
+ WireArrayEnd input = it.next();\r
Bit[] bits = input.getValues();\r
for (int i = 0; i < length; i++)\r
{\r
/**\r
* The WireArray is interpreted as an unsigned integer with n bits.\r
* \r
- * @return <code>true</code> if all bits are either <code>Bit.ONE</code> or\r
- * <code>Bit.ZERO</code> (they do not all have to have the same value),\r
- * not <code>Bit.X</code> or <code>Bit.Z</code>. <code>false</code> is\r
- * returned otherwise.\r
+ * @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\r
+ * value), not <code>Bit.X</code> or <code>Bit.Z</code>. <code>false</code> is returned otherwise.\r
* \r
* @author Fabian Stemmler\r
*/\r
/**\r
* The WireArray is interpreted as an unsigned integer with n bits.\r
* \r
- * @return The unsigned value of the {@link WireArray}'s bits, where value 0\r
- * corresponds with 2^0, value 1 is 2^1 and so on.\r
+ * @return The unsigned value of the {@link WireArray}'s bits, where value 0 corresponds with 2^0, value 1 is 2^1 and so on.\r
* \r
* @author Fabian Stemmler\r
*/\r
/**\r
* The WireArray is interpreted as a signed integer with n bits.\r
* \r
- * @return The signed value of the {@link WireArray}'s bits, where value 0\r
- * corresponds with 2^0, value 1 is 2^1 and so on.\r
+ * @return The signed value of the {@link WireArray}'s bits, where value 0 corresponds with 2^0, value 1 is 2^1 and so on.\r
* \r
* @author Fabian Stemmler\r
*/\r
}\r
\r
/**\r
- * @return An array of length n containing the values of the n bits in the\r
- * {@link WireArray}. Can be safely modified.\r
+ * @return An array of length n containing the values of the n bits in the {@link WireArray}. Can be safely modified.\r
* \r
* @author Fabian Stemmler\r
*/\r
}\r
\r
/**\r
- * Adds an {@link WireArrayObserver}, who will be notified when the value of the\r
- * {@link WireArray} is updated.\r
+ * Adds an {@link WireArrayObserver}, who will be notified when the value of the {@link WireArray} is updated.\r
* \r
* @param ob The {@link WireArrayObserver} to be notified of changes.\r
- * @return true if the given {@link WireArrayObserver} was not already\r
- * registered, false otherwise\r
+ * @return true if the given {@link WireArrayObserver} was not already registered, false otherwise\r
* \r
* @author Fabian Stemmler\r
*/\r
}\r
\r
/**\r
- * Create and register a {@link WireArrayInput} object, which is tied to this\r
- * {@link WireArray}.\r
+ * Create and register a {@link WireArrayEnd} object, which is tied to this {@link WireArray}.\r
*/\r
- public WireArrayInput createInput()\r
+ public WireArrayEnd createInput()\r
{\r
- return new WireArrayInput(this);\r
+ return new WireArrayEnd(this);\r
}\r
\r
- private void registerInput(WireArrayInput toRegister)\r
+ private void registerInput(WireArrayEnd toRegister)\r
{\r
inputs.add(toRegister);\r
}\r
\r
/**\r
- * A {@link WireArrayInput} feeds a constant signal into the {@link WireArray}\r
- * it is tied to. The combination of all inputs determines the\r
- * {@link WireArray}s final value. X dominates all other inputs Z does not\r
- * affect the final value, unless there are no other inputs than Z 0 and 1 turn\r
- * into X when they are mixed\r
+ * A {@link WireArrayEnd} feeds a constant signal into the {@link WireArray} it is tied to. The combination of all inputs determines the\r
+ * {@link WireArray}s final value. X dominates all other inputs Z does not affect the final value, unless there are no other inputs than\r
+ * Z 0 and 1 turn into X when they are mixed\r
* \r
* @author Fabian Stemmler\r
*/\r
- public class WireArrayInput\r
+ public class WireArrayEnd implements Closeable\r
{\r
public final WireArray owner;\r
+ private boolean open;\r
private Bit[] inputValues;\r
\r
- private WireArrayInput(WireArray owner)\r
+ private WireArrayEnd(WireArray owner)\r
{\r
super();\r
this.owner = owner;\r
+ open = true;\r
initValues();\r
owner.registerInput(this);\r
}\r
\r
private void initValues()\r
{\r
- inputValues = Bit.Z.makeArray(length);\r
+ inputValues = Bit.U.makeArray(length);\r
}\r
\r
/**\r
- * Sets the wires values. This takes up time, as specified by the\r
- * {@link WireArray}s travel time.\r
+ * Sets the wires values. This takes up time, as specified by the {@link WireArray}s travel time.\r
* \r
* @param newValues The new values the wires should take on.\r
* \r
{\r
feedSignals(0, newValues);\r
} else\r
- throw new IllegalArgumentException(String.format("Attempted to input %o bits instead of %o bits.", newValues.length, length));\r
+ throw new IllegalArgumentException(\r
+ String.format("Attempted to input %d bits instead of %d bits.", newValues.length, length));\r
}\r
\r
/**\r
- * Sets values of a subarray of wires. This takes up time, as specified by the\r
- * {@link WireArray}s travel time.\r
+ * Sets values of a subarray of wires. This takes up time, as specified by the {@link WireArray}s travel time.\r
* \r
* @param newValues The new values the wires should take on.\r
* @param startingBit The first index of the subarray of wires.\r
*/\r
public void feedSignals(int startingBit, Bit... newValues)\r
{\r
+ if (!open)\r
+ throw new RuntimeException("Attempted to write to closed WireArrayEnd.");\r
Simulation.TIMELINE.addEvent((e) -> setValues(startingBit, newValues), travelTime);\r
}\r
\r
{\r
int exclLastIndex = startingBit + newValues.length;\r
if (length < exclLastIndex)\r
- throw new ArrayIndexOutOfBoundsException(String.format("Attempted to input bits from index %o to %o when there are only %o wires.", startingBit, exclLastIndex - 1, length));\r
+ throw new ArrayIndexOutOfBoundsException(\r
+ String.format("Attempted to input bits from index %d to %d when there are only %d wires.", startingBit,\r
+ exclLastIndex - 1, length));\r
if (!Arrays.equals(inputValues, startingBit, exclLastIndex, newValues, 0, newValues.length))\r
{\r
System.arraycopy(newValues, 0, inputValues, startingBit, newValues.length);\r
}\r
\r
/**\r
- * Returns a copy (safe to modify) of the values the {@link WireArrayInput} is currently feeding into the associated {@link WireArray}.\r
+ * Returns a copy (safe to modify) of the values the {@link WireArrayEnd} is currently feeding into the associated\r
+ * {@link WireArray}.\r
*/\r
public Bit[] getValues()\r
{\r
}\r
\r
/**\r
- * {@link WireArrayInput} now feeds Z into the associated {@link WireArray}.\r
+ * {@link WireArrayEnd} now feeds Z into the associated {@link WireArray}.\r
*/\r
public void clearSignals()\r
{\r
feedSignals(Bit.Z.makeArray(length));\r
}\r
\r
- public Bit[] wireValuesExcludingMe() \r
+ public Bit[] wireValuesExcludingMe()\r
{\r
Bit[] bits = Bit.Z.makeArray(length);\r
- for (WireArrayInput wai : inputs) \r
+ for (WireArrayEnd wai : inputs)\r
{\r
- if(wai == this)\r
+ if (wai == this)\r
continue;\r
Util.combineInto(bits, wai.getValues());\r
}\r
return bits;\r
}\r
- \r
+\r
+ public Bit getWireValue()\r
+ {\r
+ return owner.getValue();\r
+ }\r
+\r
+ public Bit[] getWireValues()\r
+ {\r
+ return owner.getValues();\r
+ }\r
+\r
@Override\r
public String toString()\r
{\r
return Arrays.toString(inputValues);\r
}\r
+\r
+ @Override\r
+ public void close()\r
+ {\r
+ inputs.remove(this);\r
+ open = false;\r
+ }\r
}\r
\r
@Override\r
return String.format("wire 0x%08x value: %s inputs: %s", hashCode(), Arrays.toString(values), inputs);\r
}\r
\r
- public static WireArrayInput[] extractInputs(WireArray[] w)\r
+ public static WireArrayEnd[] extractInputs(WireArray[] w)\r
{\r
- WireArrayInput[] inputs = new WireArrayInput[w.length];\r
+ WireArrayEnd[] inputs = new WireArrayEnd[w.length];\r
for (int i = 0; i < w.length; i++)\r
inputs[i] = w[i].createInput();\r
return inputs;\r
projects / Mograsim.git / blobdiff