mcs/ilasm/scanner/Location.cs

   1 // Location.cs\r
   2 // Author: Sergey Chaban (serge@wildwestsoftware.com)\r
   3 \r
   4 using System;\r
   5 \r
   6 namespace Mono.ILASM {\r
   7 \r
   8 \r
   9         /// <summary>\r
  10         /// </summary>\r
  11         public class Location : ICloneable {\r
  12                 internal int line;\r
  13                 internal int column;\r
  14 \r
  15 \r
  16                 /// <summary>\r
  17                 /// </summary>\r
  18                 public static readonly Location Unknown = new Location (-1, -1);\r
  19 \r
  20                 /// <summary>\r
  21                 /// </summary>\r
  22                 public Location () {\r
  23                         line = 1;\r
  24                         column = 1;\r
  25                 }\r
  26 \r
  27                 /// <summary>\r
  28                 /// </summary>\r
  29                 /// <param name="line"></param>\r
  30                 /// <param name="column"></param>\r
  31                 public Location (int line, int column)\r
  32                 {\r
  33                         this.line = line;\r
  34                         this.column = column;\r
  35                 }\r
  36 \r
  37 \r
  38                 /// <summary>\r
  39                 /// </summary>\r
  40                 /// <param name="that"></param>\r
  41                 public Location (Location that)\r
  42                 {\r
  43                         this.line = that.line;\r
  44                         this.column = that.column;\r
  45                 }\r
  46 \r
  47 \r
  48 \r
  49 \r
  50                 /// <summary>\r
  51                 /// </summary>\r
  52                 public void NewLine ()\r
  53                 {\r
  54                         ++line;\r
  55                         column = 1;\r
  56                 }\r
  57 \r
  58 \r
  59                 /// <summary>\r
  60                 /// </summary>\r
  61                 public void PreviousLine ()\r
  62                 {\r
  63                         --line;\r
  64                         column = 1;\r
  65                 }\r
  66 \r
  67                 /// <summary>\r
  68                 /// </summary>\r
  69                 public void NextColumn ()\r
  70                 {\r
  71                         ++column;\r
  72                 }\r
  73 \r
  74                 /// <summary>\r
  75                 /// </summary>\r
  76                 public void PreviousColumn ()\r
  77                 {\r
  78                         if (column == 1) {\r
  79                                 PreviousLine ();\r
  80                         } else {\r
  81                                 --column;\r
  82                         }\r
  83                 }\r
  84 \r
  85                 /// <summary>\r
  86                 /// </summary>\r
  87                 /// <param name="other"></param>\r
  88                 public void CopyFrom (Location other)\r
  89                 {\r
  90                         this.line = other.line;\r
  91                         this.column = other.column;\r
  92                 }\r
  93 \r
  94 \r
  95                 /// <summary>\r
  96                 /// </summary>\r
  97                 /// <returns></returns>\r
  98                 public virtual object Clone () {\r
  99                         return new Location (this);\r
 100                 }\r
 101 \r
 102         }\r
 103 }\r