The final restructured version for automatic build using maven tycho

[Mograsim.git] / plugins / net.mograsim.logic.core / src / net / mograsim / logic / core / components / CoreTriStateBuffer.java

diff --git a/plugins/net.mograsim.logic.core/src/net/mograsim/logic/core/components/CoreTriStateBuffer.java b/plugins/net.mograsim.logic.core/src/net/mograsim/logic/core/components/CoreTriStateBuffer.java
new file mode 100644 (file)
index 0000000..4b7a339
--- /dev/null
+++ b/plugins/net.mograsim.logic.core/src/net/mograsim/logic/core/components/CoreTriStateBuffer.java
@@ -0,0 +1,55 @@
+package net.mograsim.logic.core.components;
+
+import java.util.List;
+
+import net.mograsim.logic.core.timeline.Timeline;
+import net.mograsim.logic.core.timeline.TimelineEventHandler;
+import net.mograsim.logic.core.types.Bit;
+import net.mograsim.logic.core.types.BitVector;
+import net.mograsim.logic.core.wires.CoreWire.ReadEnd;
+import net.mograsim.logic.core.wires.CoreWire.ReadWriteEnd;
+
+public class CoreTriStateBuffer extends BasicCoreComponent
+{
+       ReadEnd in, enable;
+       ReadWriteEnd out;
+
+       public CoreTriStateBuffer(Timeline timeline, int processTime, ReadEnd in, ReadWriteEnd out, ReadEnd enable)
+       {
+               super(timeline, processTime);
+               if (in.width() != out.width())
+                       throw new IllegalArgumentException(
+                                       "Tri-state output must have the same amount of bits as the input. Input: " + in.width() + " Output: " + out.width());
+               if (enable.width() != 1)
+                       throw new IllegalArgumentException("Tri-state enable must have exactly one bit, not " + enable.width() + ".");
+               this.in = in;
+               in.registerObserver(this);
+               this.enable = enable;
+               enable.registerObserver(this);
+               this.out = out;
+       }
+
+       @Override
+       protected TimelineEventHandler compute()
+       {
+               if (enable.getValue() == Bit.ONE)
+               {
+                       BitVector inValues = in.getValues();
+                       return e -> out.feedSignals(inValues);
+               }
+               return e -> out.clearSignals();
+       }
+
+       @Override
+       public List<ReadEnd> getAllInputs()
+       {
+               return List.of(in, enable);
+       }
+
+       @Override
+       public List<ReadWriteEnd> getAllOutputs()
+       {
+               return List.of(out);
+       }
+
+}