1 //
2 // Empty.cs
3 //
4 // Author:
5 //   Jb Evain (jbevain@gmail.com)
6 //
7 // Copyright (c) 2008 - 2011 Jb Evain
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 
29 using System;
30 using Mono.Collections.Generic;
31 
32 namespace Mono {
33 
34 	static class Empty<T> {
35 
36 		public static readonly T [] Array = new T [0];
37 	}
38 }
39 
40 namespace Mono.Cecil {
41 
42 	static partial class Mixin {
43 
IsNullOrEmpty(this T [] self)44 		public static bool IsNullOrEmpty<T> (this T [] self)
45 		{
46 			return self == null || self.Length == 0;
47 		}
48 
IsNullOrEmpty(this Collection<T> self)49 		public static bool IsNullOrEmpty<T> (this Collection<T> self)
50 		{
51 			return self == null || self.size == 0;
52 		}
53 
Resize(this T [] self, int length)54 		public static T [] Resize<T> (this T [] self, int length)
55 		{
56 #if !CF
57 			Array.Resize (ref self, length);
58 #else
59 			var copy = new T [length];
60 			Array.Copy (self, copy, self.Length);
61 			self = copy;
62 #endif
63 
64 			return self;
65 		}
66 	}
67 }
68