2 // ConditionalExpression.cs
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
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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.
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30 using System
.Reflection
.Emit
;
32 namespace System
.Linq
.Expressions
{
34 public sealed class ConditionalExpression
: Expression
{
40 public Expression Test
{
44 public Expression IfTrue
{
45 get { return if_true; }
48 public Expression IfFalse
{
49 get { return if_false; }
52 internal ConditionalExpression (Expression test
, Expression if_true
, Expression if_false
)
53 : base (ExpressionType
.Conditional
, if_true
.Type
)
56 this.if_true
= if_true
;
57 this.if_false
= if_false
;
60 internal override void Emit (EmitContext ec
)
63 var false_target
= ig
.DefineLabel ();
64 var end_target
= ig
.DefineLabel ();
67 ig
.Emit (OpCodes
.Brfalse
, false_target
);
70 ig
.Emit (OpCodes
.Br
, end_target
);
72 ig
.MarkLabel (false_target
);
75 ig
.MarkLabel (end_target
);