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.ReadEnd;
   9 import era.mi.logic.wires.Wire.ReadWriteEnd;
  10
  11 public abstract class MultiInputGate extends BasicComponent
  12 {
  13         protected ReadEnd[] in;
  14         protected ReadWriteEnd out;
  15         protected final int length;
  16         protected MutationOperation op;
  17
  18         protected MultiInputGate(int processTime, MutationOperation op, ReadWriteEnd out, ReadEnd... in)
  19         {
  20                 super(processTime);
  21                 this.op = op;
  22                 length = out.length();
  23                 this.in = in.clone();
  24                 if (in.length < 1)
  25                         throw new IllegalArgumentException(String.format("Cannot create gate with %d wires.", in.length));
  26                 for (ReadEnd w : in)
  27                 {
  28                         if (w.length() != length)
  29                                 throw new IllegalArgumentException("All wires connected to the gate must be of uniform length.");
  30                         w.addObserver(this);
  31                 }
  32                 this.out = out;
  33         }
  34
  35         @Override
  36         public List<ReadEnd> getAllInputs()
  37         {
  38                 return List.of(in);
  39         }
  40
  41         @Override
  42         public List<ReadWriteEnd> getAllOutputs()
  43         {
  44                 return List.of(out);
  45         }
  46
  47         @Override
  48         protected void compute()
  49         {
  50                 BitVectorMutator mutator = BitVectorMutator.empty();
  51                 for (ReadEnd w : in)
  52                         op.apply(mutator, w.getValues());
  53                 out.feedSignals(mutator.get());
  54         }
  55 }