Newtonsoft.Json\Utilities\ILGeneratorExtensions.cs

#region License

// Copyright (c) 2007 James Newton-King

//

// Permission is hereby granted, free of charge, to any person

// obtaining a copy of this software and associated documentation

// files (the "Software"), to deal in the Software without

// restriction, including without limitation the rights to use,

// copy, modify, merge, publish, distribute, sublicense, and/or sell

// copies of the Software, and to permit persons to whom the

// Software is furnished to do so, subject to the following

// conditions:

//

// The above copyright notice and this permission notice shall be

// included in all copies or substantial portions of the Software.

//

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

// OTHER DEALINGS IN THE SOFTWARE.

#endregion

#if !PocketPC && !SILVERLIGHT

using System;

using System.Collections.Generic;

using System.Linq;

using System.Reflection.Emit;

using System.Text;

using System.Reflection;

namespace Newtonsoft.Json.Utilities

{

  internal static class ILGeneratorExtensions

  {

    public static void PushInstance(this ILGenerator generator, Type type)

    {

      generator.Emit(OpCodes.Ldarg_0);

      if (type.IsValueType)

        generator.Emit(OpCodes.Unbox, type);

      else

        generator.Emit(OpCodes.Castclass, type);

    }

    public static void BoxIfNeeded(this ILGenerator generator, Type type)

    {

      if (type.IsValueType)

        generator.Emit(OpCodes.Box, type);

      else

        generator.Emit(OpCodes.Castclass, type);

    }

    public static void UnboxIfNeeded(this ILGenerator generator, Type type)

    {

      if (type.IsValueType)

        generator.Emit(OpCodes.Unbox_Any, type);

      else

        generator.Emit(OpCodes.Castclass, type);

    }

    public static void CallMethod(this ILGenerator generator, MethodInfo methodInfo)

    {

      if (methodInfo.IsFinal || !methodInfo.IsVirtual)

        generator.Emit(OpCodes.Call, methodInfo);

      else

        generator.Emit(OpCodes.Callvirt, methodInfo);

    }

    public static void Return(this ILGenerator generator)

    {

      generator.Emit(OpCodes.Ret);

    }

  }

}

#endif