Experiments/Attic/Rook/Castle.Rook.Compiler/Parser/antlr/debug/DebuggingInputBuffer.cs

   1 namespace antlr.debug
   2 {
   3         using System;
   4         using ArrayList = System.Collections.ArrayList;
   5
   6         public class DebuggingInputBuffer : InputBuffer
   7         {
   8                 public virtual ArrayList InputBufferListeners
   9                 {
  10                         get { return inputBufferEventSupport.InputBufferListeners; }
  11                 }
  12                 public virtual bool DebugMode
  13                 {
  14                         set     { debugMode = value;    }
  15                 }
  16
  17                 private InputBuffer buffer;
  18                 private InputBufferEventSupport inputBufferEventSupport;
  19                 private bool debugMode = true;
  20
  21
  22                 public DebuggingInputBuffer(InputBuffer buffer)
  23                 {
  24                         this.buffer = buffer;
  25                         inputBufferEventSupport = new InputBufferEventSupport(this);
  26                 }
  27                 public virtual void  addInputBufferListener(InputBufferListener l)
  28                 {
  29                         inputBufferEventSupport.addInputBufferListener(l);
  30                 }
  31                 public override char  consume()
  32                 {
  33                         char la = ' ';
  34                         try
  35                         {
  36                                 la = buffer.LA(1);
  37                         }
  38                         catch (CharStreamException)
  39                         {
  40                         } // vaporize it...
  41                         buffer.consume();
  42                         if (debugMode)
  43                                 inputBufferEventSupport.fireConsume(la);
  44                         return la;
  45                 }
  46                 public override void  fill(int a)
  47                 {
  48                         buffer.fill(a);
  49                 }
  50                 public virtual bool isDebugMode()
  51                 {
  52                         return debugMode;
  53                 }
  54                 public override bool isMarked()
  55                 {
  56                         return buffer.isMarked();
  57                 }
  58                 public override char LA(int i)
  59                 {
  60                         char la = buffer.LA(i);
  61                         if (debugMode)
  62                                 inputBufferEventSupport.fireLA(la, i);
  63                         return la;
  64                 }
  65                 public override int mark()
  66                 {
  67                         int m = buffer.mark();
  68                         inputBufferEventSupport.fireMark(m);
  69                         return m;
  70                 }
  71                 public virtual void  removeInputBufferListener(InputBufferListener l)
  72                 {
  73                         if (inputBufferEventSupport != null)
  74                                 inputBufferEventSupport.removeInputBufferListener(l);
  75                 }
  76                 public override void  rewind(int mark)
  77                 {
  78                         buffer.rewind(mark);
  79                         inputBufferEventSupport.fireRewind(mark);
  80                 }
  81         }
  82 }