Src/Newtonsoft.Json/Utilities/DynamicWrapper.cs

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#if !SILVERLIGHT && !PocketPC
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Reflection.Emit;
using System.Resources;
using System.Text;
using System.Threading;
using System.Globalization;

namespace Newtonsoft.Json.Utilities
{
  internal class DynamicWrapperBase
  {
    internal protected object UnderlyingObject;
  }

  internal static class DynamicWrapper
  {
    private static readonly object _lock = new object();
    private static readonly WrapperDictionary _wrapperDictionary = new WrapperDictionary();

    private static ModuleBuilder _moduleBuilder;

    private static ModuleBuilder ModuleBuilder
    {
      get
      {
        Init();
        return _moduleBuilder;
      }
    }

    private static void Init()
    {
      if (_moduleBuilder == null)
      {
        lock (_lock)
        {
          if (_moduleBuilder == null)
          {
            AssemblyName assemblyName = new AssemblyName("Newtonsoft.Json.Dynamic");
            assemblyName.KeyPair = new StrongNameKeyPair(GetStrongKey());

            AssemblyBuilder assembly = AppDomain.CurrentDomain.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.Run);
            _moduleBuilder = assembly.DefineDynamicModule("Newtonsoft.Json.DynamicModule", false);
          }
        }
      }
    }

    private static byte[] GetStrongKey()
    {
      const string name = "Newtonsoft.Json.Dynamic.snk";

      using (Stream stream = Assembly.GetExecutingAssembly().GetManifestResourceStream(name))
      {
        if (stream == null)