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

   1 package era.mi.logic.components;\r
   2 \r
   3 import era.mi.logic.Bit;\r
   4 import era.mi.logic.wires.Wire;\r
   5 import era.mi.logic.wires.Wire.WireEnd;\r
   6 import era.mi.logic.wires.WireObserver;\r
   7 \r
   8 public class Splitter implements WireObserver\r
   9 {\r
  10         private WireEnd input;\r
  11         private WireEnd[] outputs;\r
  12 \r
  13         public Splitter(WireEnd input, WireEnd... outputs)\r
  14         {\r
  15                 this.input = input;\r
  16                 this.outputs = outputs;\r
  17                 input.addObserver(this);\r
  18                 int length = 0;\r
  19                 for (WireEnd out : outputs)\r
  20                         length += out.length();\r
  21 \r
  22                 if (input.length() != length)\r
  23                         throw new IllegalArgumentException(\r
  24                                         "The input of splitting one into n WireArrays must have length = a1.length() + a2.length() + ... + an.length().");\r
  25         }\r
  26 \r
  27         protected void compute()\r
  28         {\r
  29                 int startIndex = 0;\r
  30                 Bit[] inputBits = input.getValues();\r
  31                 for (int i = 0; i < outputs.length; i++)\r
  32                 {\r
  33                         Bit[] outputBits = new Bit[outputs[i].length()];\r
  34                         System.arraycopy(inputBits, startIndex, outputBits, 0, outputs[i].length());\r
  35                         outputs[i].feedSignals(outputBits);\r
  36                         startIndex += outputs[i].length();\r
  37                 }\r
  38         }\r
  39 \r
  40         @Override\r
  41         public void update(Wire initiator, Bit[] oldValues)\r
  42         {\r
  43                 compute();\r
  44         }\r
  45 }\r