net.mograsim.logic.core/src/net/mograsim/logic/core/components/gates/MultiInputCoreGate.java

   1 package net.mograsim.logic.core.components.gates;
   2
   3 import java.util.List;
   4
   5 import net.mograsim.logic.core.components.BasicCoreComponent;
   6 import net.mograsim.logic.core.timeline.Timeline;
   7 import net.mograsim.logic.core.types.BitVector.BitVectorMutator;
   8 import net.mograsim.logic.core.types.MutationOperation;
   9 import net.mograsim.logic.core.wires.CoreWire.ReadEnd;
  10 import net.mograsim.logic.core.wires.CoreWire.ReadWriteEnd;
  11
  12 public abstract class MultiInputCoreGate extends BasicCoreComponent
  13 {
  14         protected ReadEnd[] in;
  15         protected ReadWriteEnd out;
  16         protected final int width;
  17         protected MutationOperation op;
  18         protected boolean invert = false;
  19
  20         protected MultiInputCoreGate(Timeline timeline, int processTime, MutationOperation op, ReadWriteEnd out, ReadEnd... in)
  21         {
  22                 super(timeline, processTime);
  23                 this.op = op;
  24                 width = out.width();
  25                 this.in = in.clone();
  26                 if (in.length < 1)
  27                         throw new IllegalArgumentException(String.format("Cannot create gate with %d wires.", in.length));
  28                 for (ReadEnd w : in)
  29                 {
  30                         if (w.width() != width)
  31                                 throw new IllegalArgumentException("All wires connected to the gate must be of uniform length.");
  32                         w.registerObserver(this);
  33                 }
  34                 this.out = out;
  35         }
  36
  37         protected MultiInputCoreGate(Timeline timeline, int processTime, MutationOperation op, boolean invert, ReadWriteEnd out, ReadEnd... in)
  38         {
  39                 this(timeline, processTime, op, out, in);
  40                 this.invert = invert;
  41         }
  42
  43         @Override
  44         public List<ReadEnd> getAllInputs()
  45         {
  46                 return List.of(in);
  47         }
  48
  49         @Override
  50         public List<ReadWriteEnd> getAllOutputs()
  51         {
  52                 return List.of(out);
  53         }
  54
  55         @Override
  56         protected void compute()
  57         {
  58                 BitVectorMutator mutator = BitVectorMutator.empty();
  59                 for (ReadEnd w : in)
  60                         op.apply(mutator, w.getValues());
  61                 out.feedSignals(invert ? mutator.toBitVector().not() : mutator.toBitVector());
  62         }
  63 }