83 lines
2.2 KiB
C#
83 lines
2.2 KiB
C#
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//
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// ConditionalExpression.cs
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//
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// Author:
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// Jb Evain (jbevain@novell.com)
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//
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// (C) 2008 Novell, Inc. (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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#if !FULL_AOT_RUNTIME
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using System.Reflection.Emit;
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#endif
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namespace System.Linq.Expressions {
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public sealed class ConditionalExpression : Expression {
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Expression test;
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Expression if_true;
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Expression if_false;
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public Expression Test {
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get { return test; }
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}
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public Expression IfTrue {
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get { return if_true; }
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}
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public Expression IfFalse {
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get { return if_false; }
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}
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internal ConditionalExpression (Expression test, Expression if_true, Expression if_false)
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: base (ExpressionType.Conditional, if_true.Type)
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{
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this.test = test;
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this.if_true = if_true;
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this.if_false = if_false;
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}
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#if !FULL_AOT_RUNTIME
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internal override void Emit (EmitContext ec)
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{
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var ig = ec.ig;
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var false_target = ig.DefineLabel ();
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var end_target = ig.DefineLabel ();
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test.Emit (ec);
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ig.Emit (OpCodes.Brfalse, false_target);
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if_true.Emit (ec);
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ig.Emit (OpCodes.Br, end_target);
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ig.MarkLabel (false_target);
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if_false.Emit (ec);
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ig.MarkLabel (end_target);
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}
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#endif
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}
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}
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