Merge pull request #1588 from BrzVlad/feature-aot-wbarrier
[mono.git] / mcs / class / corlib / System / RuntimeFieldHandle.cs
1 //
2 // System.RuntimeFieldHandle.cs
3 //
4 // Author:
5 //   Miguel de Icaza (miguel@ximian.com)
6 //   Andreas Nahr (ClassDevelopment@A-SoftTech.com)
7 //
8 // (C) Ximian, Inc.  http://www.ximian.com
9 //
10
11 //
12 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
13 //
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:
21 // 
22 // The above copyright notice and this permission notice shall be
23 // included in all copies or substantial portions of the Software.
24 // 
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.
32 //
33
34 using System.Reflection;
35 using System.Runtime.Serialization;
36 using System.Runtime.InteropServices;
37 using System.Runtime.ConstrainedExecution;
38 using System.Runtime.CompilerServices;
39
40 namespace System
41 {
42         [ComVisible (true)]
43         [Serializable]
44         public struct RuntimeFieldHandle : ISerializable
45         {
46                 IntPtr value;
47
48                 internal RuntimeFieldHandle (IntPtr v)
49                 {
50                         value = v;
51                 }
52
53                 RuntimeFieldHandle (SerializationInfo info, StreamingContext context)
54                 {
55                         if (info == null)
56                                 throw new ArgumentNullException ("info");
57
58                         MonoField mf = ((MonoField) info.GetValue ("FieldObj", typeof (MonoField)));
59                         value = mf.FieldHandle.Value;
60                         if (value == IntPtr.Zero)
61                                 throw new SerializationException (Locale.GetText ("Insufficient state."));
62                 }
63
64                 public IntPtr Value {
65                         get {
66                                 return value;
67                         }
68                 }
69
70                 public void GetObjectData (SerializationInfo info, StreamingContext context)
71                 {
72                         if (info == null)
73                                 throw new ArgumentNullException ("info");
74
75                         if (value == IntPtr.Zero)
76                                 throw new SerializationException ("Object fields may not be properly initialized");
77
78                         info.AddValue ("FieldObj", (MonoField) FieldInfo.GetFieldFromHandle (this), typeof (MonoField));
79                 }
80
81                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
82                 public override bool Equals (object obj)
83                 {
84                         if (obj == null || GetType () != obj.GetType ())
85                                 return false;
86
87                         return value == ((RuntimeFieldHandle)obj).Value;
88                 }
89
90                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
91                 public bool Equals (RuntimeFieldHandle handle)
92                 {
93                         return value == handle.Value;
94                 }
95
96                 public override int GetHashCode ()
97                 {
98                         return value.GetHashCode ();
99                 }
100
101                 public static bool operator == (RuntimeFieldHandle left, RuntimeFieldHandle right)
102                 {
103                         return left.Equals (right);
104                 }
105
106                 public static bool operator != (RuntimeFieldHandle left, RuntimeFieldHandle right)
107                 {
108                         return !left.Equals (right);
109                 }
110
111                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
112                 static extern void SetValueInternal (FieldInfo fi, object obj, object value);
113
114                 internal static void SetValue (RtFieldInfo field, Object obj, Object value, RuntimeType fieldType, FieldAttributes fieldAttr, RuntimeType declaringType, ref bool domainInitialized)
115                 {
116                         SetValueInternal (field, obj, value);
117                 }
118
119                 unsafe internal static Object GetValueDirect (RtFieldInfo field, RuntimeType fieldType, void *pTypedRef, RuntimeType contextType)
120                 {
121                         throw new NotImplementedException ("GetValueDirect");
122                 }
123
124                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
125                 static unsafe extern internal void SetValueDirect (RtFieldInfo field, RuntimeType fieldType, void* pTypedRef, Object value, RuntimeType contextType);
126         }
127 }