/Debugger/Debugger.Core/Mono.Cecil/Mono.Cecil.Metadata/MetadataToken.cs

 1//
 2// MetadataToken.cs
 3//
 4// Author:
 5//   Jb Evain (jbevain@gmail.com)
 6//
 7// (C) 2005 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
29namespace Mono.Cecil.Metadata {
30
31	public struct MetadataToken {
32
33		uint m_rid;
34		TokenType m_type;
35
36		public uint RID {
37			get { return m_rid; }
38		}
39
40		public TokenType TokenType {
41			get { return m_type; }
42		}
43
44		public static readonly MetadataToken Zero = new MetadataToken ((TokenType) 0, 0);
45
46		public MetadataToken (int token)
47		{
48			m_type = (TokenType) (token & 0xff000000);
49			m_rid = (uint) token & 0x00ffffff;
50		}
51
52		public MetadataToken (TokenType table, uint rid)
53		{
54			m_type = table;
55			m_rid = rid;
56		}
57
58		internal static MetadataToken FromMetadataRow (TokenType table, int rowIndex)
59		{
60			return new MetadataToken (table, (uint) rowIndex + 1);
61		}
62
63		public uint ToUInt ()
64		{
65			return (uint) m_type | m_rid;
66		}
67
68		public override int GetHashCode ()
69		{
70			return (int) ToUInt ();
71		}
72
73		public override bool Equals (object other)
74		{
75			if (other is MetadataToken) {
76				MetadataToken o = (MetadataToken) other;
77				return o.m_rid == m_rid && o.m_type == m_type;
78			}
79
80			return false;
81		}
82
83		public static bool operator == (MetadataToken one, MetadataToken other)
84		{
85			return one.Equals (other);
86		}
87
88		public static bool operator != (MetadataToken one, MetadataToken other)
89		{
90			return !one.Equals (other);
91		}
92
93		public override string ToString ()
94		{
95			return string.Format ("{0} [0x{1}]",
96				m_type, m_rid.ToString ("x4"));
97		}
98	}
99}