+package era.mi.logic.components.gates;\r
+\r
+import java.util.Arrays;\r
+import java.util.Collections;\r
+import java.util.List;\r
+\r
+import era.mi.logic.Bit;\r
+import era.mi.logic.components.BasicComponent;\r
+import era.mi.logic.wires.WireArray;\r
+import era.mi.logic.wires.WireArray.WireArrayInput;\r
+\r
+public abstract class MultiInputGate extends BasicComponent\r
+{\r
+ protected WireArray[] in;\r
+ protected WireArray out;\r
+ protected WireArrayInput outI;\r
+ protected final int length;\r
+ protected Operation op;\r
+ \r
+ protected MultiInputGate(int processTime, Operation op, WireArray out, WireArray... in)\r
+ {\r
+ super(processTime);\r
+ this.op = op;\r
+ length = out.length;\r
+ this.in = in.clone();\r
+ if(in.length < 1)\r
+ throw new IllegalArgumentException(String.format("Cannot create gate with %d wires.", in.length));\r
+ for(WireArray w : in)\r
+ {\r
+ if(w.length != length)\r
+ throw new IllegalArgumentException("All wires connected to the gate must be of uniform length.");\r
+ w.addObserver(this);\r
+ }\r
+ this.out = out;\r
+ outI = out.createInput();\r
+ }\r
+\r
+\r
+ @Override\r
+ public List<WireArray> getAllInputs()\r
+ {\r
+ return Collections.unmodifiableList(Arrays.asList(in));\r
+ }\r
+\r
+ @Override\r
+ public List<WireArray> getAllOutputs()\r
+ {\r
+ return Collections.unmodifiableList(Arrays.asList(out));\r
+ }\r
+ \r
+ protected void compute()\r
+ {\r
+ Bit[] result = in[0].getValues();\r
+ for(int i = 1; i < in.length; i++)\r
+ result = op.execute(result, in[i].getValues());\r
+ outI.feedSignals(result);\r
+ }\r
+ \r
+ protected interface Operation\r
+ {\r
+ public Bit[] execute(Bit[] a, Bit[] b);\r
+ }\r
+}\r