Tools/DynamicProxy/Castle.DynamicProxy/Builder/CodeBuilder/SimpleAST/ReferencesToObjectArrayExpression.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
  15 namespace Castle.DynamicProxy.Builder.CodeBuilder.SimpleAST
  16 {
  17         using System;
  18         using System.Reflection.Emit;
  19         using Castle.DynamicProxy.Builder.CodeBuilder.Utils;
  20
  21         /// <summary>
  22         /// Summary description for ReferencesToObjectArrayExpression.
  23         /// </summary>
  24         [CLSCompliant(false)]
  25         public class ReferencesToObjectArrayExpression : Expression
  26         {
  27                 private TypeReference[] _args;
  28
  29                 public ReferencesToObjectArrayExpression( params TypeReference[] args )
  30                 {
  31                         _args = args;
  32                 }
  33
  34                 public override void Emit(IEasyMember member, ILGenerator gen)
  35                 {
  36                         LocalBuilder local = gen.DeclareLocal( typeof(object[]) );
  37                         gen.Emit(OpCodes.Ldc_I4, _args.Length);
  38                         gen.Emit(OpCodes.Newarr, typeof(object));
  39                         gen.Emit(OpCodes.Stloc, local);
  40
  41                         for(int i=0; i < _args.Length; i++)
  42                         {
  43                                 gen.Emit(OpCodes.Ldloc, local);
  44                                 gen.Emit(OpCodes.Ldc_I4, i);
  45
  46                                 TypeReference reference = _args[i];
  47
  48                                 ArgumentsUtil.EmitLoadOwnerAndReference(reference, gen);
  49
  50                                 if (reference.Type.IsByRef)
  51                                 {
  52                                         throw new NotSupportedException();
  53                                 }
  54
  55                                 if (reference.Type.IsValueType)
  56                                 {
  57                                         gen.Emit(OpCodes.Box, reference.Type.UnderlyingSystemType);
  58                                 }
  59
  60                                 gen.Emit(OpCodes.Stelem_Ref);
  61                         }
  62
  63                         gen.Emit(OpCodes.Ldloc, local);
  64                 }
  65         }
  66 }