era.mi/src/era/mi/logic/components/gates/MultiInputGate.java

   1 package era.mi.logic.components.gates;
   2
   3 import java.util.List;
   4
   5 import era.mi.logic.components.BasicComponent;
   6 import era.mi.logic.types.BitVector.BitVectorMutator;
   7 import era.mi.logic.types.MutationOperation;
   8 import era.mi.logic.wires.Wire.WireEnd;
   9
  10 public abstract class MultiInputGate extends BasicComponent
  11 {
  12         protected WireEnd[] in;
  13         protected WireEnd out;
  14         protected final int length;
  15         protected MutationOperation op;
  16
  17         protected MultiInputGate(int processTime, MutationOperation op, WireEnd out, WireEnd... in)
  18         {
  19                 super(processTime);
  20                 this.op = op;
  21                 length = out.length();
  22                 this.in = in.clone();
  23                 if (in.length < 1)
  24                         throw new IllegalArgumentException(String.format("Cannot create gate with %d wires.", in.length));
  25                 for (WireEnd w : in)
  26                 {
  27                         if (w.length() != length)
  28                                 throw new IllegalArgumentException("All wires connected to the gate must be of uniform length.");
  29                         w.addObserver(this);
  30                 }
  31                 this.out = out;
  32         }
  33
  34         @Override
  35         public List<WireEnd> getAllInputs()
  36         {
  37                 return List.of(in);
  38         }
  39
  40         @Override
  41         public List<WireEnd> getAllOutputs()
  42         {
  43                 return List.of(out);
  44         }
  45
  46         @Override
  47         protected void compute()
  48         {
  49                 BitVectorMutator mutator = BitVectorMutator.empty();
  50                 for (WireEnd w : in)
  51                         op.apply(mutator, w.getValues());
  52                 out.feedSignals(mutator.get());
  53         }
  54 }