5 // Jb Evain (jbevain@novell.com)
7 // (C) 2008 Novell, Inc. (http://www.novell.com)
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:
17 // The above copyright notice and this permission notice shall be
18 // included in all copies or substantial portions of the Software.
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.
30 using System
.Reflection
;
31 using System
.Reflection
.Emit
;
33 namespace System
.Linq
.Expressions
{
35 public sealed class MemberExpression
: Expression
{
37 Expression expression
;
40 public Expression Expression
{
41 get { return expression; }
44 public MemberInfo Member
{
45 get { return member; }
48 internal MemberExpression (Expression expression
, MemberInfo member
, Type type
)
49 : base (ExpressionType
.MemberAccess
, type
)
51 this.expression
= expression
;
55 internal override void Emit (EmitContext ec
)
57 member
.OnFieldOrProperty (
58 field
=> EmitFieldAccess (ec
, field
),
59 prop
=> EmitPropertyAccess (ec
, prop
));
62 void EmitPropertyAccess (EmitContext ec
, PropertyInfo property
)
64 var getter
= property
.GetGetMethod (true);
66 ec
.EmitLoadSubject (expression
);
71 void EmitFieldAccess (EmitContext ec
, FieldInfo field
)
73 if (!field
.IsStatic
) {
74 ec
.EmitLoadSubject (expression
);
75 ec
.ig
.Emit (OpCodes
.Ldfld
, field
);
77 ec
.ig
.Emit (OpCodes
.Ldsfld
, field
);