+++ /dev/null
-package net.mograsim.logic.core.components;
-
-import java.util.List;
-
-import net.mograsim.logic.core.LogicObservable;
-import net.mograsim.logic.core.LogicObserver;
-import net.mograsim.logic.core.timeline.Timeline;
-import net.mograsim.logic.core.wires.CoreWire;
-import net.mograsim.logic.core.wires.CoreWire.ReadEnd;
-import net.mograsim.logic.core.wires.CoreWire.ReadWriteEnd;
-
-public class CoreUnidirectionalMerger extends CoreComponent implements LogicObserver
-{
- private ReadWriteEnd out;
- private ReadEnd[] inputs;
- private int[] beginningIndex;
-
- /**
- *
- * @param union The output of merging n {@link CoreWire}s into one. Must have width = a1.width() + a2.width() + ... + an.width().
- * @param inputs The inputs to be merged into the union
- */
- public CoreUnidirectionalMerger(Timeline timeline, ReadWriteEnd union, ReadEnd... inputs)
- {
- super(timeline);
- this.inputs = inputs;
- this.out = union;
- this.beginningIndex = new int[inputs.length];
-
- int width = 0;
- for (int i = 0; i < inputs.length; i++)
- {
- beginningIndex[i] = width;
- width += inputs[i].width();
- inputs[i].registerObserver(this);
- }
-
- if (width != union.width())
- throw new IllegalArgumentException(
- "The output of merging n WireArrays into one must have width = a1.width() + a2.width() + ... + an.width().");
- }
-
- public ReadEnd getInput(int index)
- {
- return inputs[index];
- }
-
- public ReadEnd getUnion()
- {
- return out;
- }
-
- @Override
- public void update(LogicObservable initiator)
- {
- int index = find(initiator);
- int beginning = beginningIndex[index];
- out.feedSignals(beginning, inputs[index].getValues());
- }
-
- private int find(LogicObservable r)
- {
- for (int i = 0; i < inputs.length; i++)
- if (inputs[i] == r)
- return i;
- return -1;
- }
-
- public ReadEnd[] getInputs()
- {
- return inputs.clone();
- }
-
- @Override
- public List<ReadEnd> getAllInputs()
- {
- return List.of(inputs);
- }
-
- @Override
- public List<ReadWriteEnd> getAllOutputs()
- {
- return List.of(out);
- }
-}