context: //
  // System.Reflection/Module.cs
  //
  // Author:
  //   Paolo Molaro (lupus@ximian.com)
  //
  // (C) 2001 Ximian, Inc.  http://www.ximian.com
  // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
  //
  // 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.
  //
  
  using System.Runtime.Serialization;
  using System.Security.Cryptography.X509Certificates;
  using System.Runtime.InteropServices;
  using System.Runtime.CompilerServices;
  using System.Security;
  using System.Security.Permissions;
  using System.Collections.Generic;
  
  namespace System.Reflection {
  
  	internal enum ResolveTokenError {
  		OutOfRange,
  		BadTable,
  		Other
  	};
  
  	[ComVisible (true)]
  	[ComDefaultInterfaceAttribute (typeof (_Module))]
  	[Serializable]
  	[ClassInterfaceAttribute (ClassInterfaceType.None)]
  	[StructLayout (LayoutKind.Sequential)]
  #if MOBILE
  	public abstract class Module : ISerializable, ICustomAttributeProvider {
  #elif NET_4_0
  	public abstract class Module : ISerializable, ICustomAttributeProvider, _Module {
  #else
  	public partial class Module : ISerializable, ICustomAttributeProvider, _Module {
  #endif
  		public static readonly TypeFilter FilterTypeName = new TypeFilter (filter_by_type_name);
  		public static readonly TypeFilter FilterTypeNameIgnoreCase = new TypeFilter (filter_by_type_name_ignore_case);
  	
  #pragma warning disable 649	
  		internal IntPtr _impl; /* a pointer to a MonoImage */
  		internal Assembly assembly;
  		internal string fqname;
  		internal string name;
  		internal string scopename;
  		internal bool is_resource;
  		internal int token;
  #pragma warning restore 649		
  	
  		const BindingFlags defaultBindingFlags = 
  			BindingFlags.Public | BindingFlags.Static | BindingFlags.Instance;
  
  #if NET_4_0
  		protected
  #else
  		internal
  #endif
  		Module () {
  		}
  
  		public ModuleHandle ModuleHandle {
  			get {
  				return new ModuleHandle (_impl);
  			}
  		}
  
  		[MethodImplAttribute (MethodImplOptions.InternalCall)]
  		internal static extern int get_MetadataToken (Module module);
  		
  		[MethodImplAttribute (MethodImplOptions.InternalCall)]
  		internal static extern int GetMDStreamVersion (IntPtr module_handle);
  
  		public FieldInfo GetField (string name) 
  		{
  			return GetField (name, BindingFlags.Public | BindingFlags.Static | BindingFlags.Instance);
  		}
  
  		public FieldInfo[] GetFields () 
  		{
  			return GetFields (BindingFlags.Public | BindingFlags.Static | BindingFlags.Instance);
  		}
  	
  		public MethodInfo GetMethod (string name) 
  		{
  			return GetMethodImpl (name, defaultBindingFlags, null, CallingConventions.Any, null, null);
  		}
  	
  		public MethodInfo GetMethod (string name, Type[] types) 
  		{
  			if (types == null)
  				throw new ArgumentNullException ("types");
  			return GetMethodImpl (name, defaultBindingFlags, null, CallingConventions.Any, types, null);
  		}
  	
  		public MethodInfo GetMethod (string name, BindingFlags bindingAttr, Binder binder, CallingConventions callConvention, Type[] types, ParameterModifier[] modifiers) 
  		{
  			if (types == null)
  				throw new ArgumentNullException ("types");
  			return GetMethodImpl (name, bindingAttr, binder, callConvention, types, modifiers);
  		}
  	
  		public MethodInfo[] GetMethods () 
  		{
  			return GetMethods (BindingFlags.Public | BindingFlags.Static | BindingFlags.Instance);
  		}
  	
  		[SecurityPermission (SecurityAction.LinkDemand, SerializationFormatter = true)]
  		public virtual void GetObjectData (SerializationInfo info, StreamingContext context) 
  		{
  			if (info == null)
  				throw new ArgumentNullException ("info");
  
  			UnitySerializationHolder.GetModuleData (this, info, context);
  		}
  
  		[ComVisible (true)]
  		public virtual Type GetType(string className) 
  		{
  			return GetType (className, false, false);
  		}
  
  		[ComVisible (true)]
  		public virtual Type GetType(string className, bool ignoreCase) 
  		{
  			return GetType (className, false, ignoreCase);
  		}
  	
  		[MethodImplAttribute (MethodImplOptions.InternalCall)]
  		internal extern Type[] InternalGetTypes ();
  	
  		public override string ToString () 
  		{
  			return name;
  		}
  
  		internal Guid MvId {
  			get {
  				return GetModuleVersionId ();
  			}
  		}
  
  		internal Exception resolve_token_exception (int metadataToken, ResolveTokenError error, string tokenType) {
  			if (error == ResolveTokenError.OutOfRange)
  				return new ArgumentOutOfRangeException ("metadataToken", String.Format ("Token 0x{0:x} is not valid in the scope of module {1}", metadataToken, name));
  			else
  				return new ArgumentException (String.Format ("Token 0x{0:x} is not a valid {1} token in the scope of module {2}", metadataToken, tokenType, name), "metadataToken");
  		}
  
  		internal IntPtr[] ptrs_from_types (Type[] types) {
  			if (types == null)
  				return null;
  			else {
  				IntPtr[] res = new IntPtr [types.Length];
  				for (int i = 0; i < types.Length; ++i) {
  					if (types [i] == null)
  						throw new ArgumentException ();
  					res [i] = types [i].TypeHandle.Value;
  				}
  				return res;
  			}
  		}
  
  		public FieldInfo ResolveField (int metadataToken) {
  			return ResolveField (metadataToken, null, null);
  		}
  
  		public MemberInfo ResolveMember (int metadataToken) {
  			return ResolveMember (metadataToken, null, null);
  		}
  
  		public MethodBase ResolveMethod (int metadataToken) {
  			return ResolveMethod (metadataToken, null, null);
  		}
  
  		public Type ResolveType (int metadataToken) {
  			return ResolveType (metadataToken, null, null);
  		}
  
  		internal static Type MonoDebugger_ResolveType (Module module, int token)
  		{
  			ResolveTokenError error;
  
  			IntPtr handle = ResolveTypeToken (module._impl, token, null, null, out error);
  			if (handle == IntPtr.Zero)
  				return null;
  			else
  				return Type.GetTypeFromHandle (new RuntimeTypeHandle (handle));
  		}
  
  		// Used by mcs, the symbol writer, and mdb through reflection
  		internal static Guid Mono_GetGuid (Module module)
  		{
  			return module.GetModuleVersionId ();
  		}
  
  		internal virtual Guid GetModuleVersionId ()
  		{
  			return new Guid (GetGuidInternal ());
  		}
  
  		private static bool filter_by_type_name (Type m, object filterCriteria) {
  			string s = (string)filterCriteria;
  			if (s.Length > 0 && s [s.Length - 1] == '*')
  				return m.Name.StartsWithOrdinalUnchecked (s.Substring (0, s.Length - 1));
  			
  			return m.Name == s;
  		}
  
  		private static bool filter_by_type_name_ignore_case (Type m, object filterCriteria) {
  			string s = (string)filterCriteria;
  			if (s.Length > 0 && s [s.Length - 1] == '*')
  				return m.Name.StartsWithOrdinalCaseInsensitiveUnchecked (s.Substring (0, s.Length - 1));
  			
  			return string.CompareOrdinalCaseInsensitiveUnchecked (m.Name, s) == 0;
  		}
  
  		[MethodImplAttribute (MethodImplOptions.InternalCall)]
  		internal extern IntPtr GetHINSTANCE ();
  
  		[MethodImplAttribute (MethodImplOptions.InternalCall)]
  		private extern string GetGuidInternal ();
  
  		[MethodImplAttribute (MethodImplOptions.InternalCall)]
  		internal extern Type GetGlobalType ();
  
  		[MethodImplAttribute (MethodImplOptions.InternalCall)]
  		internal static extern IntPtr ResolveTypeToken (IntPtr module, int token, IntPtr[] type_args, IntPtr[] method_args, out ResolveTokenError error);
  
  		[MethodImplAttribute (MethodImplOptions.InternalCall)]
  		internal static extern IntPtr ResolveMethodToken (IntPtr module, int token, IntPtr[] type_args, IntPtr[] method_args, out ResolveTokenError error);
  
  		[MethodImplAttribute (MethodImplOptions.InternalCall)]
  		internal static extern IntPtr ResolveFieldToken (IntPtr module, int token, IntPtr[] type_args, IntPtr[] method_args, out ResolveTokenError error);
  
  		[MethodImplAttribute (MethodImplOptions.InternalCall)]
  		internal static extern string ResolveStringToken (IntPtr module, int token, out ResolveTokenError error);
  
  		[MethodImplAttribute (MethodImplOptions.InternalCall)]
  		internal static extern MemberInfo ResolveMemberToken (IntPtr module, int token, IntPtr[] type_args, IntPtr[] method_args, out ResolveTokenError error);
  
  		[MethodImplAttribute (MethodImplOptions.InternalCall)]
  		internal static extern byte[] ResolveSignature (IntPtr module, int metadataToken, out ResolveTokenError error);
  
  		[MethodImplAttribute (MethodImplOptions.InternalCall)]
  		internal static extern void GetPEKind (IntPtr module, out PortableExecutableKinds peKind, out ImageFileMachine machine);
  
  #if !MOBILE
  		void _Module.GetIDsOfNames ([In] ref Guid riid, IntPtr rgszNames, uint cNames, uint lcid, IntPtr rgDispId)
  		{
  			throw new NotImplementedException ();
  		}
  
  		void _Module.GetTypeInfo (uint iTInfo, uint lcid, IntPtr ppTInfo)
  		{
  			throw new NotImplementedException ();
  		}
  
  		void _Module.GetTypeInfoCount (out uint pcTInfo)
  		{
  			throw new NotImplementedException ();
  		}
  
  		void _Module.Invoke (uint dispIdMember, [In] ref Guid riid, uint lcid, short wFlags, IntPtr pDispParams,
  			IntPtr pVarResult, IntPtr pExcepInfo, IntPtr puArgErr)
  		{
  			throw new NotImplementedException ();
  		}
  #endif
  
  #if NET_4_0
  		public override bool Equals (object o)
  		{
  			return o == (object) this;
  		}
  
  		public override int GetHashCode ()
  		{
  			return base.GetHashCode ();
  		}
  
  		public static bool operator == (Module left, Module right)
  		{
  			if ((object)left == (object)right)
  				return true;
  			if ((object)left == null ^ (object)right == null)
  				return false;
  			return left.Equals (right);
  		}
  
  		public static bool operator != (Module left, Module right)
  		{
  			if ((object)left == (object)right)
  				return false;
  			if ((object)left == null ^ (object)right == null)
  				return true;
  			return !left.Equals (right);
  		}
  
  #endif
  
  #if NET_4_0
  
  		public virtual Assembly Assembly {
  			get { throw CreateNIE (); }
  		}
  
  		public virtual string Name {
  			get { throw CreateNIE (); }
  		}
  	
  		public virtual string ScopeName {
  			get { throw CreateNIE (); }
  		}
  
  		public virtual int MDStreamVersion {
  			get { throw CreateNIE (); }
  		}
  
  		public virtual Guid ModuleVersionId {
  			get { throw CreateNIE (); }
  		}
  
  		public virtual string FullyQualifiedName {
  			get { throw CreateNIE (); }
  		}
  
  		public virtual int MetadataToken {
  			get { throw CreateNIE (); }
  		}
  
  		static Exception CreateNIE ()
  		{
  			return new NotImplementedException ("Derived classes must implement it");
  		}
  
  		public virtual bool IsResource()
  		{
  			throw CreateNIE ();
  		}
  
  		public virtual Type[] FindTypes(TypeFilter filter, object filterCriteria) 
  		{
  			throw CreateNIE ();
  		}
  
  		public virtual object[] GetCustomAttributes(bool inherit)
  		{
  			throw CreateNIE ();
  		}
  
  		public virtual object[] GetCustomAttributes(Type attributeType, bool inherit) 
  		{
  			throw CreateNIE ();
  		}
  
  		public virtual IList<CustomAttributeData> GetCustomAttributesData ()
  		{
  			throw CreateNIE ();
  		}
  
  		public virtual FieldInfo GetField (string name, BindingFlags bindingAttr) 
  		{
  			throw CreateNIE ();
  		}
  
  		public virtual FieldInfo[] GetFields (BindingFlags bindingFlags)
  		{
  			throw CreateNIE ();
  		}
  
  		protected virtual MethodInfo GetMethodImpl (string name, BindingFlags bindingAttr, Binder binder, CallingConventions callConvention, Type[] types, ParameterModifier[] modifiers) 
  		{
  			throw CreateNIE ();
  		}
  
  		public virtual MethodInfo[] GetMethods (BindingFlags bindingFlags)
  		{
  			throw CreateNIE ();
  		}
  
  		public virtual void GetPEKind (out PortableExecutableKinds peKind, out ImageFileMachine machine)
  		{
  			throw CreateNIE ();
  		}
  
  		[ComVisible (true)]
  		public virtual Type GetType(string className, bool throwOnError, bool ignoreCase) 
  		{
  			throw CreateNIE ();
  		}
  
  		public virtual bool IsDefined (Type attributeType, bool inherit) 
  		{
  			throw CreateNIE ();
  		}
  
  		public virtual FieldInfo ResolveField (int metadataToken, Type [] genericTypeArguments, Type [] genericMethodArguments)
  		{
  			throw CreateNIE ();
  		}
  
  		public virtual MemberInfo ResolveMember (int metadataToken, Type [] genericTypeArguments, Type [] genericMethodArguments)
  		{
  			throw CreateNIE ();
  		}
  
  		public virtual MethodBase ResolveMethod (int metadataToken, Type [] genericTypeArguments, Type [] genericMethodArguments)
  		{
  			throw CreateNIE ();
  		}
  
  		public virtual byte[] ResolveSignature (int metadataToken)
  		{
  			throw CreateNIE ();
  		}
  
  		public virtual string ResolveString (int metadataToken)
  		{
  
gt: 			throw CreateNIE ();