static Assembly GetDefaultAssembly(string shortName)
        {
            // These assemblies are already loaded by SharpDevelop, so we
            // don't need to load them in a separate AppDomain/with Cecil.
            switch (shortName)
            {
            case "System":                     // System != mscorlib !!!
                return(SystemAssembly);

            case "System.Xml":
            case "System.XML":
                return(typeof(XmlReader).Assembly);

            case "System.Data":
            case "System.Design":
            case "System.Drawing":
            case "System.Web.Services":
            case "System.Windows.Forms":
            case "System.Web":
            case "System.ServiceProcess":
            case "System.Security":
            case "System.Runtime.Remoting":
            case "System.Messaging":
            case "System.Management":
            case "System.Drawing.Design":
            case "System.Deployment":
            case "System.Configuration":
            case "Microsoft.VisualBasic":
                // Is not necessarily loaded by Dom-using application, but
                // is a default .NET assembly and should be loaded with
                // Reflection.
                return(ReflectionLoader.ReflectionLoadGacAssembly(shortName, false));

            default:
                return(null);
            }
        }
        /// <summary>
        /// Load a project content using Reflection in a separate AppDomain.
        /// This method first tries to load the assembly from the disk cache, if it exists there.
        /// If it does not exist in disk cache, it creates a new AppDomain, instanciates a ReflectionLoader in it
        /// and loads the assembly <paramref name="filename"/>.
        /// If the file does not exist, <paramref name="include"/> is loaded from GAC.
        /// </summary>
        protected ReflectionProjectContent ReflectionLoadProjectContent(string filename, string include)
        {
            DomPersistence persistence;
            bool           tempPersistence;

            if (this.persistence == null)
            {
                tempPersistence = true;
                persistence     = new DomPersistence(Path.GetTempPath(), this);
            }
            else
            {
                // non-temp persistence
                tempPersistence = false;
                persistence     = this.persistence;

                ReflectionProjectContent pc = persistence.LoadProjectContentByAssemblyName(filename);
                if (pc != null)
                {
                    return(pc);
                }
                pc = persistence.LoadProjectContentByAssemblyName(include);
                if (pc != null)
                {
                    return(pc);
                }
            }

            AppDomainSetup setup = new AppDomainSetup();

            setup.DisallowCodeDownload = true;
            setup.ApplicationBase      = AppDomain.CurrentDomain.BaseDirectory;
            AppDomain domain = AppDomain.CreateDomain("AssemblyLoadingDomain", AppDomain.CurrentDomain.Evidence, setup);

            string database;

            try {
                object           o      = domain.CreateInstanceAndUnwrap(typeof(ReflectionLoader).Assembly.FullName, typeof(ReflectionLoader).FullName);
                ReflectionLoader loader = (ReflectionLoader)o;
                database = loader.LoadAndCreateDatabase(filename, include, persistence.CacheDirectory);
            } catch (FileLoadException e) {
                database = null;
                HostCallback.ShowAssemblyLoadErrorInternal(filename, include, e.Message);
            } catch (Exception e) {
                database = null;
                HostCallback.ShowError("Error loading code-completion information for " + include + " from " + filename, e);
                throw e;
            } finally {
                AppDomain.Unload(domain);
            }
            if (database == null)
            {
                LoggingService.Debug("AppDomain finished but returned null...");
                return(null);
            }
            else
            {
                LoggingService.Debug("AppDomain finished, loading cache...");
                try {
                    return(persistence.LoadProjectContent(database));
                } finally {
                    if (tempPersistence)
                    {
                        try {
                            File.Delete(database);
                        } catch {}
                    }
                }
            }
        }