Merge pull request #656 from LogosBible/collection_lock
[mono.git] / mcs / class / System.Core / System.Linq.Expressions / MemberAssignment.cs
1 //
2 // MemberAssignement.cs
3 //
4 // Author:
5 //   Jb Evain (jbevain@novell.com)
6 //
7 // (C) 2008 Novell, Inc. (http://www.novell.com)
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 System.Reflection;
31 #if !FULL_AOT_RUNTIME
32 using System.Reflection.Emit;
33 #endif
34 using System.Text;
35
36 namespace System.Linq.Expressions {
37
38         public sealed class MemberAssignment : MemberBinding {
39
40                 Expression expression;
41
42                 public Expression Expression {
43                         get { return expression; }
44                 }
45
46                 internal MemberAssignment (MemberInfo member, Expression expression)
47                         : base (MemberBindingType.Assignment, member)
48                 {
49                         this.expression = expression;
50                 }
51
52 #if !FULL_AOT_RUNTIME
53                 internal override void Emit (EmitContext ec, LocalBuilder local)
54                 {
55                         this.Member.OnFieldOrProperty (
56                                 field => EmitFieldAssignment (ec, field, local),
57                                 prop => EmitPropertyAssignment (ec, prop, local));
58                 }
59
60                 void EmitFieldAssignment (EmitContext ec, FieldInfo field, LocalBuilder local)
61                 {
62                         ec.EmitLoadSubject (local);
63                         expression.Emit (ec);
64                         ec.ig.Emit (OpCodes.Stfld, field);
65                 }
66
67                 void EmitPropertyAssignment (EmitContext ec, PropertyInfo property, LocalBuilder local)
68                 {
69                         var setter = property.GetSetMethod (true);
70                         if (setter == null)
71                                 throw new InvalidOperationException ();
72
73                         ec.EmitLoadSubject (local);
74                         expression.Emit (ec);
75                         ec.EmitCall (setter);
76                 }
77 #endif
78         }
79 }