5 // Paolo Molaro (lupus@ximian.com)
6 // Dan Lewis (dihlewis@yahoo.co.uk)
8 // (C) 2001 Ximian, Inc. http://www.ximian.com
12 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
14 // Permission is hereby granted, free of charge, to any person obtaining
15 // a copy of this software and associated documentation files (the
16 // "Software"), to deal in the Software without restriction, including
17 // without limitation the rights to use, copy, modify, merge, publish,
18 // distribute, sublicense, and/or sell copies of the Software, and to
19 // permit persons to whom the Software is furnished to do so, subject to
20 // the following conditions:
22 // The above copyright notice and this permission notice shall be
23 // included in all copies or substantial portions of the Software.
25 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
29 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
30 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
31 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
34 using System.Runtime.CompilerServices;
35 using System.Runtime.InteropServices;
54 public static int ByteLength (Array array)
56 // note: the other methods in this class also use ByteLength to test for
57 // null and non-primitive arguments as a side-effect.
60 throw new ArgumentNullException ("array");
62 int length = ByteLengthInternal (array);
64 throw new ArgumentException (Locale.GetText ("Object must be an array of primitives."));
69 public static byte GetByte (Array array, int index)
71 if (index < 0 || index >= ByteLength (array))
72 throw new ArgumentOutOfRangeException ("index", Locale.GetText(
73 "Value must be non-negative and less than the size of the collection."));
75 return GetByteInternal (array, index);
78 public static void SetByte (Array array, int index, byte value)
80 if (index < 0 || index >= ByteLength (array))
81 throw new ArgumentOutOfRangeException ("index", Locale.GetText(
82 "Value must be non-negative and less than the size of the collection."));
84 SetByteInternal (array, index, value);
87 public static void BlockCopy (Array src, int srcOffset, Array dest, int destOffset, int count)
90 throw new ArgumentNullException ("src");
93 throw new ArgumentNullException ("dest");
96 throw new ArgumentOutOfRangeException ("srcOffset", Locale.GetText(
97 "Non-negative number required."));
100 throw new ArgumentOutOfRangeException ("destOffset", Locale.GetText (
101 "Non-negative number required."));
104 throw new ArgumentOutOfRangeException ("count", Locale.GetText (
105 "Non-negative number required."));
107 // We do the checks in unmanaged code for performance reasons
108 bool res = BlockCopyInternal (src, srcOffset, dest, destOffset, count);
110 // watch for integer overflow
111 if ((srcOffset > ByteLength (src) - count) || (destOffset > ByteLength (dest) - count))
112 throw new ArgumentException (Locale.GetText (
113 "Offset and length were out of bounds for the array or count is greater than" +
114 "the number of elements from index to the end of the source collection."));
119 [MethodImplAttribute (MethodImplOptions.InternalCall)]
120 private extern static int ByteLengthInternal (Array array);
122 [MethodImplAttribute (MethodImplOptions.InternalCall)]
123 private extern static byte GetByteInternal (Array array, int index);
125 [MethodImplAttribute (MethodImplOptions.InternalCall)]
126 private extern static void SetByteInternal (Array array, int index, int value);
128 [MethodImplAttribute (MethodImplOptions.InternalCall)]
129 internal extern static bool BlockCopyInternal (Array src, int src_offset, Array dest, int dest_offset, int count);