Tools/DynamicProxy/Castle.DynamicProxy/Builder/CodeBuilder/SimpleAST/NullExpression.cs

   1 // Copyright 2004-2007 Castle Project - http://www.castleproject.org/
   2 //
   3 // Licensed under the Apache License, Version 2.0 (the "License");
   4 // you may not use this file except in compliance with the License.
   5 // You may obtain a copy of the License at
   6 //
   7 //     http://www.apache.org/licenses/LICENSE-2.0
   8 //
   9 // Unless required by applicable law or agreed to in writing, software
  10 // distributed under the License is distributed on an "AS IS" BASIS,
  11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 // See the License for the specific language governing permissions and
  13 // limitations under the License.
  14 namespace Castle.DynamicProxy.Builder.CodeBuilder.SimpleAST
  15 {
  16         using System;
  17         using System.Reflection.Emit;
  18
  19         /// <summary>
  20         /// Summary description for NullExpression.
  21         /// </summary>
  22         [CLSCompliant(false)]
  23         public class NullExpression : Expression
  24         {
  25                 public static readonly NullExpression Instance = new NullExpression();
  26
  27                 protected NullExpression()
  28                 {
  29                 }
  30
  31                 public override void Emit(IEasyMember member, ILGenerator gen)
  32                 {
  33                         gen.Emit(OpCodes.Ldnull);
  34                 }
  35         }
  36 }