mcs/class/corlib/System/ArraySegment.cs

   1 //
   2 // ArraySegment.cs
   3 //
   4 // Authors:
   5 //  Ben Maurer (bmaurer@ximian.com)
   6 //
   7 // Copyright (C) 2004 Novell
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28 #if NET_2_0
  29 namespace System {
  30         [CLSCompliant (false)]
  31         public struct ArraySegment <T> {
  32                 T [] array;
  33                 int offset, length;
  34
  35                 public ArraySegment (T [] array, int offset, int length)
  36                 {
  37                         if (array == null)
  38                                 throw new ArgumentNullException ("array");
  39
  40                         if (offset >= array.Length || (offset + length) >= array.Length)
  41                                 throw new ArgumentException ("out of bounds");
  42
  43                         this.array = array;
  44                         this.offset = offset;
  45                         this.length = length;
  46                 }
  47
  48                 public ArraySegment (T [] array)
  49                 {
  50                         if (array == null)
  51                                 throw new ArgumentNullException ("array");
  52
  53                         this.array = array;
  54                         this.offset = 0;
  55                         this.length = array.Length;
  56                 }
  57
  58                 public T [] Array {
  59                         get { return array; }
  60                 }
  61
  62                 public int Offset {
  63                         get { return offset; }
  64                 }
  65
  66                 public int Length {
  67                         get { return length; }
  68                 }
  69         }
  70 }
  71 #endif