era.mi/src/era/mi/logic/components/Splitter.java

   1 package era.mi.logic.components;
   2
   3 import java.util.List;
   4
   5 import era.mi.logic.types.BitVector;
   6 import era.mi.logic.wires.Wire.ReadEnd;
   7 import era.mi.logic.wires.Wire.ReadWriteEnd;
   8 import era.mi.logic.wires.WireObserver;
   9
  10 public class Splitter implements WireObserver, Component
  11 {
  12         private ReadEnd input;
  13         private ReadWriteEnd[] outputs;
  14
  15         public Splitter(ReadEnd input, ReadWriteEnd... outputs)
  16         {
  17                 this.input = input;
  18                 this.outputs = outputs;
  19                 input.addObserver(this);
  20                 int length = 0;
  21                 for (ReadEnd out : outputs)
  22                         length += out.length();
  23
  24                 if (input.length() != length)
  25                         throw new IllegalArgumentException(
  26                                         "The input of splitting one into n WireArrays must have length = a1.length() + a2.length() + ... + an.length().");
  27         }
  28
  29         protected void compute()
  30         {
  31                 BitVector inputBits = input.getValues();
  32                 int startIndex = 0;
  33                 for (int i = 0; i < outputs.length; i++)
  34                 {
  35                         outputs[i].feedSignals(inputBits.subVector(startIndex, startIndex + outputs[i].length()));
  36                         startIndex += outputs[i].length();
  37                 }
  38         }
  39
  40         @Override
  41         public void update(ReadEnd initiator, BitVector oldValues)
  42         {
  43                 compute();
  44         }
  45
  46         @Override
  47         public List<ReadEnd> getAllInputs()
  48         {
  49                 return List.of(input);
  50         }
  51
  52         @Override
  53         public List<ReadWriteEnd> getAllOutputs()
  54         {
  55                 return List.of(outputs);
  56         }
  57 }