mcs/class/System/System.Text.RegularExpressions/collections.cs

   1 //\r
   2 // assembly:    System\r
   3 // namespace:   System.Text.RegularExpressions\r
   4 // file:        collections.cs\r
   5 //\r
   6 // author:      Dan Lewis (dlewis@gmx.co.uk)\r
   7 //              (c) 2002\r
   8 \r
   9 using System;\r
  10 using System.Collections;\r
  11 \r
  12 namespace System.Text.RegularExpressions {\r
  13         public abstract class RegexCollectionBase : ICollection, IEnumerable {\r
  14                 public int Count {\r
  15                         get { return list.Count; }\r
  16                 }\r
  17 \r
  18                 public bool IsReadOnly {\r
  19                         get { return true; }    // FIXME\r
  20                 }\r
  21 \r
  22                 public bool IsSynchronized {\r
  23                         get { return false; }   // FIXME\r
  24                 }\r
  25 \r
  26                 public object SyncRoot {\r
  27                         get { return list; }    // FIXME\r
  28                 }\r
  29 \r
  30                 public void CopyTo (Array array, int index) {\r
  31                         foreach (Object o in list) {\r
  32                                 if (index > array.Length)\r
  33                                         break;\r
  34                                 \r
  35                                 array.SetValue (o, index ++);\r
  36                         }\r
  37                 }\r
  38 \r
  39                 public IEnumerator GetEnumerator () {\r
  40                         return new Enumerator (list);\r
  41                 }\r
  42 \r
  43                 // internal methods\r
  44 \r
  45                 internal RegexCollectionBase () {\r
  46                         list = new ArrayList ();\r
  47                 }\r
  48 \r
  49                 internal void Add (Object o) {\r
  50                         list.Add (o);\r
  51                 }\r
  52 \r
  53                 internal void Reverse () {\r
  54                         list.Reverse ();\r
  55                 }\r
  56 \r
  57                 // IEnumerator implementation\r
  58 \r
  59                 private class Enumerator : IEnumerator {\r
  60                         public Enumerator (IList list) {\r
  61                                 this.list = list;\r
  62                                 Reset ();\r
  63                         }\r
  64 \r
  65                         public object Current {\r
  66                                 get {\r
  67                                         if (ptr >= list.Count)\r
  68                                                 throw new InvalidOperationException ();\r
  69 \r
  70                                         return list[ptr];\r
  71                                 }\r
  72                         }\r
  73 \r
  74                         public bool MoveNext () {\r
  75                                 if (ptr > list.Count)\r
  76                                         throw new InvalidOperationException ();\r
  77                                 \r
  78                                 return ++ ptr < list.Count;\r
  79                         }\r
  80 \r
  81                         public void Reset () {\r
  82                                 ptr = -1;\r
  83                         }\r
  84 \r
  85                         private IList list;\r
  86                         private int ptr;\r
  87                 }\r
  88 \r
  89                 // protected fields\r
  90 \r
  91                 protected ArrayList list;\r
  92         }\r
  93 \r
  94         [Serializable]\r
  95         public class CaptureCollection : RegexCollectionBase, ICollection, IEnumerable {\r
  96                 public Capture this[int i] {\r
  97                         get { return (Capture)list[i]; }\r
  98                 }\r
  99 \r
 100                 internal CaptureCollection () {\r
 101                 }\r
 102         }\r
 103 \r
 104         [Serializable]\r
 105         public class GroupCollection : RegexCollectionBase, ICollection, IEnumerable {\r
 106                 public Group this[int i] {\r
 107                         get { return (Group)list[i]; }\r
 108                 }\r
 109                 \r
 110                 public Group this[string groupName] {\r
 111                         get {\r
 112                                 foreach (object o in list) {\r
 113                                         if (!(o is Match))\r
 114                                                 continue;\r
 115 \r
 116                                         int index = ((Match) o).Regex.GroupNumberFromName (groupName);\r
 117                                         if (index != -1)\r
 118                                                 return this [index];\r
 119                                 }\r
 120 \r
 121                                 return null;\r
 122                         }\r
 123                 }\r
 124                 \r
 125                 internal GroupCollection () {\r
 126                 }\r
 127         }\r
 128 \r
 129         [Serializable]\r
 130         public class MatchCollection : RegexCollectionBase, ICollection, IEnumerable {\r
 131                 public virtual Match this[int i] {\r
 132                         get { return (Match)list[i]; }\r
 133                 }\r
 134 \r
 135                 internal MatchCollection () {\r
 136                 }\r
 137         }\r
 138 }\r