public MethodCore (DeclSpace parent, GenericMethod generic,
			FullNamedExpression type, Modifiers mod, Modifiers allowed_mod,
			MemberName name, Attributes attrs, ParametersCompiled parameters)
			: base (parent, generic, type, mod, allowed_mod, name, attrs)
		{
			this.parameters = parameters;
		}

		protected CompilerGeneratedClass (DeclSpace parent, GenericMethod generic, MemberName name, int mod)
			: this (parent, name, mod)
		{
			if (generic != null) {
				ArrayList list = new ArrayList ();
				foreach (TypeParameter tparam in generic.TypeParameters) {
					if (tparam.Constraints != null)
						list.Add (tparam.Constraints.Clone ());
				}
				SetParameterInfo (list);
			}
		}

		//
		// Creates a host for the anonymous method
		//
		AnonymousMethodMethod DoCreateMethodHost (EmitContext ec)
		{
			//
			// Anonymous method body can be converted to
			//
			// 1, an instance method in current scope when only `this' is hoisted
			// 2, a static method in current scope when neither `this' nor any variable is hoisted
			// 3, an instance method in compiler generated storey when any hoisted variable exists
			//

			Modifiers modifiers;
			if (Block.HasCapturedVariable || Block.HasCapturedThis) {
				storey = FindBestMethodStorey ();
				modifiers = storey != null ? Modifiers.INTERNAL : Modifiers.PRIVATE;
			} else {
				if (ec.CurrentAnonymousMethod != null)
					storey = ec.CurrentAnonymousMethod.Storey;

				modifiers = Modifiers.STATIC | Modifiers.PRIVATE;
			}

			TypeContainer parent = storey != null ? storey : ec.CurrentTypeDefinition.Parent.PartialContainer;

			MemberCore mc = ec.MemberContext as MemberCore;
			string name = CompilerGeneratedClass.MakeName (parent != storey ? block_name : null,
				"m", null, unique_id++);

			MemberName member_name;
			GenericMethod generic_method;
			if (storey == null && mc.MemberName.TypeArguments != null) {
				member_name = new MemberName (name, mc.MemberName.TypeArguments.Clone (), Location);

				var hoisted_tparams = ec.CurrentTypeParameters;
				var type_params = new TypeParameter[hoisted_tparams.Length];
				for (int i = 0; i < type_params.Length; ++i) {
					type_params[i] = hoisted_tparams[i].CreateHoistedCopy (parent, null);
				}

				generic_method = new GenericMethod (parent.NamespaceEntry, parent, member_name, type_params,
					new TypeExpression (ReturnType, Location), parameters);
			} else {
				member_name = new MemberName (name, Location);
				generic_method = null;
			}

			string real_name = String.Format (
				"{0}~{1}{2}", mc.GetSignatureForError (), GetSignatureForError (),
				parameters.GetSignatureForError ());

			return new AnonymousMethodMethod (parent,
				this, storey, generic_method, new TypeExpression (ReturnType, Location), modifiers,
				real_name, member_name, parameters);
		}

		//
		// This finds the method or property for us to override. invocation_type is the type where
		// the override is going to be declared, name is the name of the method/property, and
		// param_types is the parameters, if any to the method or property
		//
		// Because the MemberCache holds members from this class and all the base classes,
		// we can avoid tons of reflection stuff.
		//
		public MemberInfo FindMemberToOverride (Type invocation_type, string name, AParametersCollection parameters, GenericMethod generic_method, bool is_property)
		{
			ArrayList applicable;
			if (method_hash != null && !is_property)
				applicable = (ArrayList) method_hash [name];
			else
				applicable = (ArrayList) member_hash [name];
			
			if (applicable == null)
				return null;
			//
			// Walk the chain of methods, starting from the top.
			//
			for (int i = applicable.Count - 1; i >= 0; i--) {
				CacheEntry entry = (CacheEntry) applicable [i];
				
				if ((entry.EntryType & (is_property ? (EntryType.Property | EntryType.Field) : EntryType.Method)) == 0)
					continue;

				PropertyInfo pi = null;
				MethodInfo mi = null;
				FieldInfo fi = null;
				AParametersCollection cmp_attrs;
				
				if (is_property) {
					if ((entry.EntryType & EntryType.Field) != 0) {
						fi = (FieldInfo)entry.Member;
						cmp_attrs = ParametersCompiled.EmptyReadOnlyParameters;
					} else {
						pi = (PropertyInfo) entry.Member;
						cmp_attrs = TypeManager.GetParameterData (pi);
					}
				} else {
					mi = (MethodInfo) entry.Member;
					cmp_attrs = TypeManager.GetParameterData (mi);
				}

				if (fi != null) {
					// TODO: Almost duplicate !
					// Check visibility
					switch (fi.Attributes & FieldAttributes.FieldAccessMask) {
					case FieldAttributes.PrivateScope:
						continue;
					case FieldAttributes.Private:
						//
						// A private method is Ok if we are a nested subtype.
						// The spec actually is not very clear about this, see bug 52458.
						//
						if (!invocation_type.Equals (entry.Container.Type) &&
						    !TypeManager.IsNestedChildOf (invocation_type, entry.Container.Type))
							continue;
						break;
					case FieldAttributes.FamANDAssem:
					case FieldAttributes.Assembly:
						//
						// Check for assembly methods
						//
						if (fi.DeclaringType.Assembly != CodeGen.Assembly.Builder)
							continue;
						break;
					}
					return entry.Member;
				}

				//
				// Check the arguments
				//
				if (cmp_attrs.Count != parameters.Count)
					continue;
	
				int j;
				for (j = 0; j < cmp_attrs.Count; ++j) {
					//
					// LAMESPEC: No idea why `params' modifier is ignored
					//
					if ((parameters.FixedParameters [j].ModFlags & ~Parameter.Modifier.PARAMS) != 
						(cmp_attrs.FixedParameters [j].ModFlags & ~Parameter.Modifier.PARAMS))
						break;

					if (!TypeManager.IsEqual (parameters.Types [j], cmp_attrs.Types [j]))
						break;
				}

				if (j < cmp_attrs.Count)
					continue;

				//
				// check generic arguments for methods
				//
				if (mi != null) {
					Type [] cmpGenArgs = TypeManager.GetGenericArguments (mi);
					if (generic_method == null && cmpGenArgs != null && cmpGenArgs.Length != 0)
//.........这里部分代码省略.........

void case_169()
#line 1328 "cs-parser.jay"
{
		lexer.ConstraintsParsing = false;
		valid_param_mod = 0;

		MemberName name = (MemberName) yyVals[-6+yyTop];
		current_local_parameters = (ParametersCompiled) yyVals[-3+yyTop];

		if (yyVals[-1+yyTop] != null && name.TypeArguments == null)
			Report.Error (80, lexer.Location,
				      "Constraints are not allowed on non-generic declarations");

		Method method;
		GenericMethod generic = null;
		if (name.TypeArguments != null) {
			generic = new GenericMethod (current_namespace, current_class, name,
				new TypeExpression (TypeManager.void_type, GetLocation (yyVals[-7+yyTop])),
				current_local_parameters);

			generic.SetParameterInfo ((List<Constraints>) yyVals[0+yyTop]);
		}

		var modifiers = (Modifiers) yyVals[-9+yyTop];


		const Modifiers invalid_partial_mod = Modifiers.AccessibilityMask | Modifiers.ABSTRACT | Modifiers.EXTERN |
			Modifiers.NEW | Modifiers.OVERRIDE | Modifiers.SEALED | Modifiers.VIRTUAL;

		if ((modifiers & invalid_partial_mod) != 0) {
			Report.Error (750, name.Location, "A partial method cannot define access modifier or " +
       			"any of abstract, extern, new, override, sealed, or virtual modifiers");
			modifiers &= ~invalid_partial_mod;
		}

		if ((current_class.ModFlags & Modifiers.PARTIAL) == 0) {
			Report.Error (751, name.Location, "A partial method must be declared within a " +
       			"partial class or partial struct");
		}
		
		modifiers |= Modifiers.PARTIAL | Modifiers.PRIVATE;
		
		method = new Method (current_class, generic, new TypeExpression (TypeManager.void_type, GetLocation (yyVals[-7+yyTop])),
				     modifiers, name, current_local_parameters, (Attributes) yyVals[-10+yyTop]);

		if (RootContext.Documentation != null)
			method.DocComment = Lexer.consume_doc_comment ();

		/* TODO: lbag, push void*/
		StoreModifierLocation (Modifiers.PARTIAL, GetLocation (yyVals[-8+yyTop]));
		lbag.AddMember (method, GetModifierLocations (), GetLocation (yyVals[-5+yyTop]), GetLocation (yyVals[-2+yyTop]));
		yyVal = method;
	  }

			public AnonymousMethodMethod (DeclSpace parent, AnonymousExpression am, AnonymousMethodStorey storey,
							  GenericMethod generic, TypeExpr return_type,
							  Modifiers mod, string real_name, MemberName name,
							  ParametersCompiled parameters)
				: base (parent, generic, return_type, mod | Modifiers.COMPILER_GENERATED,
						name, parameters, null)
			{
				this.AnonymousMethod = am;
				this.Storey = storey;
				this.RealName = real_name;

				Parent.PartialContainer.AddMethod (this);
				Block = new ToplevelBlock (am.block, parameters);
			}

		public InterfaceMemberBase (DeclSpace parent, GenericMethod generic,
				   FullNamedExpression type, Modifiers mod, Modifiers allowed_mod,
				   MemberName name, Attributes attrs)
			: base (parent, generic, type, mod, allowed_mod, Modifiers.PRIVATE,
				name, attrs)
		{
			IsInterface = parent.PartialContainer.Kind == MemberKind.Interface;
			IsExplicitImpl = (MemberName.ExplicitInterface != null);
			explicit_mod_flags = mod;
		}

//.........这里部分代码省略.........
        } finally {
          isInteraction = false;
          interactionInitializationDone = false;
        }
	  }
  break;
case 162:
#line 1399 "D:\GitHub\M\Marvin\mcs\cs-parser.jay"
  {
	      isInteraction = true;
          interactionInitializationDone = false;		  
	  }
  break;
case 163:
#line 1405 "D:\GitHub\M\Marvin\mcs\cs-parser.jay"
  {
		valid_param_mod = ParameterModifierType.All;
	  }
  break;
case 164:
#line 1409 "D:\GitHub\M\Marvin\mcs\cs-parser.jay"
  {
		lexer.ConstraintsParsing = true;
	  }
  break;
case 165:
#line 1413 "D:\GitHub\M\Marvin\mcs\cs-parser.jay"
  {
		lexer.ConstraintsParsing = false;
		valid_param_mod = 0;
		MemberName name = (MemberName) yyVals[-6+yyTop];
		current_local_parameters = (ParametersCompiled) yyVals[-3+yyTop];

		GenericMethod generic = null;
		if (name.TypeArguments != null) {
			generic = new GenericMethod (current_namespace, current_class, name,
						     (FullNamedExpression) yyVals[-7+yyTop], current_local_parameters);

			generic.SetParameterInfo ((List<Constraints>) yyVals[0+yyTop]);
		} else if (yyVals[0+yyTop] != null) {
			report.Error (80, GetLocation (yyVals[0+yyTop]),
				"Constraints are not allowed on non-generic declarations");
		}
		var modifiers = Modifiers.PUBLIC;
		
		var method = Method.Create (current_class, generic, (FullNamedExpression) yyVals[-7+yyTop], modifiers,
				     name, current_local_parameters, (Attributes) yyVals[-10+yyTop], yyVals[0+yyTop] != null);
				     
		if (doc_support)
			method.DocComment = Lexer.consume_doc_comment ();

		lbag.AddMember (method, mod_locations, GetLocation (yyVals[-5+yyTop]), GetLocation (yyVals[-2+yyTop]));
		yyVal = method;
	  }
  break;
case 166:
#line 1444 "D:\GitHub\M\Marvin\mcs\cs-parser.jay"
  {
		if (doc_support)
			Lexer.doc_state = XmlCommentState.NotAllowed;
        isRoleMethod = true;
		/* Add it early in the case of body being eof for full ast*/
		var m = (Method) yyVals[0+yyTop];
        async_block = (m.ModFlags & Modifiers.ASYNC) != 0;
		current_container.AddMethod (m);
	  }

		protected MethodOrOperator (DeclSpace parent, GenericMethod generic, FullNamedExpression type, Modifiers mod,
				Modifiers allowed_mod, MemberName name,
				Attributes attrs, ParametersCompiled parameters)
			: base (parent, generic, type, mod, allowed_mod, name,
					attrs, parameters)
		{
		}

void case_149()
#line 1346 "cs-parser.jay"
{
		lexer.ConstraintsParsing = false;
		valid_param_mod = 0;

		MemberName name = (MemberName) yyVals[-6+yyTop];
		current_local_parameters = (ParametersCompiled) yyVals[-3+yyTop];

		if (yyVals[-1+yyTop] != null && name.TypeArguments == null)
			report.Error (80, lexer.Location,
				      "Constraints are not allowed on non-generic declarations");

		GenericMethod generic = null;
		if (name.TypeArguments != null) {
			generic = new GenericMethod (current_namespace, current_class, name,
				new TypeExpression (compiler.BuiltinTypes.Void, GetLocation (yyVals[-8+yyTop])),
				current_local_parameters);

			generic.SetParameterInfo ((List<Constraints>) yyVals[-1+yyTop]);
		}

		var modifiers = (Modifiers) yyVals[-10+yyTop];
		modifiers |= Modifiers.PARTIAL;

		var method = Method.Create (current_class, generic, new TypeExpression (compiler.BuiltinTypes.Void, GetLocation (yyVals[-8+yyTop])),
				     modifiers, name, current_local_parameters, (Attributes) yyVals[-11+yyTop], yyVals[-1+yyTop] != null);

		if (doc_support)
			method.DocComment = Lexer.consume_doc_comment ();

		StoreModifierLocation (Modifiers.PARTIAL, GetLocation (yyVals[-9+yyTop]));
		lbag.AddMember (method, mod_locations, GetLocation (yyVals[-5+yyTop]), GetLocation (yyVals[-2+yyTop]));
		yyVal = method;
	  }

		public AnonymousMethodStorey (Block block, TypeContainer parent, MemberBase host, GenericMethod generic, string name)
			: base (parent, generic, MakeMemberName (host, name, generic, block.StartLocation), Modifiers.PRIVATE)
		{
			Parent = parent;
			OriginalSourceBlock = block;
			ID = unique_id++;
		}

		static MemberName MakeMemberName (MemberBase host, string name, GenericMethod generic, Location loc)
		{
			string host_name = host == null ? null : host.Name;
			string tname = MakeName (host_name, "c", name, unique_id);
			TypeArguments args = null;
			if (generic != null) {
				args = new TypeArguments ();
				foreach (TypeParameter tparam in generic.CurrentTypeParameters)
					args.Add (new TypeParameterName (tparam.Name, null, loc));
			}

			return new MemberName (tname, args, loc);
		}

		public AnonymousMethodStorey (Block block, TypeContainer parent, MemberBase host, GenericMethod generic, string name)
			: base (parent, MakeMemberName (host, name, generic, block.StartLocation), Modifiers.PRIVATE | Modifiers.SEALED)
		{
			Parent = parent;
			OriginalSourceBlock = block;
			ID = unique_id++;

			if (generic != null) {
				var hoisted_tparams = generic.CurrentTypeParameters;
				type_params = new TypeParameter [hoisted_tparams.Length];
				for (int i = 0; i < type_params.Length; ++i) {
					type_params[i] = hoisted_tparams[i].CreateHoistedCopy (this, spec);
				}
			}
		}

		public ToplevelBlock (Block parent, Parameters parameters, GenericMethod generic, Location start) :
			this (parent, parameters, start)
		{
			this.generic = generic;
		}

		public ToplevelBlock (CompilerContext ctx, Block parent, ParametersCompiled parameters, GenericMethod generic, Location start) :
			this (ctx, parent, parameters, start)
		{
			this.generic = generic;
		}

		public MethodData (InterfaceMemberBase member,
				   Modifiers modifiers, MethodAttributes flags, 
				   IMethodData method, MethodBuilder builder,
				   GenericMethod generic, MethodSpec parent_method)
			: this (member, modifiers, flags, method)
		{
			this.builder = builder;
			this.GenericMethod = generic;
			this.parent_method = parent_method;
		}

		public PropertyBasedMember (DeclSpace parent, GenericMethod generic,
			FullNamedExpression type, Modifiers mod, Modifiers allowed_mod,
			MemberName name, Attributes attrs)
			: base (parent, generic, type, mod, allowed_mod, name, attrs)
		{
		}

//.........这里部分代码省略.........
		current_container.AddMethod (method);
		
		if (current_container.Kind == MemberKind.Interface && method.Block != null) {
			Report.Error (531, method.Location, "`{0}': interface members cannot have a definition", method.GetSignatureForError ());
		}

		current_generic_method = null;
		current_local_parameters = null;

		if (RootContext.Documentation != null)
			Lexer.doc_state = XmlCommentState.Allowed;
	  }
  break;
case 163:
#line 1289 "cs-parser.jay"
  {
		valid_param_mod = ParameterModifierType.All;
	  }
  break;
case 164:
#line 1293 "cs-parser.jay"
  {
		lexer.ConstraintsParsing = true;
	  }
  break;
case 165:
#line 1297 "cs-parser.jay"
  {
		lexer.ConstraintsParsing = false;
		valid_param_mod = 0;
		MemberName name = (MemberName) yyVals[-6+yyTop];
		current_local_parameters = (ParametersCompiled) yyVals[-3+yyTop];

		GenericMethod generic = null;
		if (name.TypeArguments != null) {
			generic = new GenericMethod (current_namespace, current_class, name,
						     (FullNamedExpression) yyVals[-7+yyTop], current_local_parameters);

			generic.SetParameterInfo ((List<Constraints>) yyVals[0+yyTop]);
		} else if (yyVals[0+yyTop] != null) {
			Report.Error (80, GetLocation (yyVals[0+yyTop]),
				"Constraints are not allowed on non-generic declarations");
		}

		Method method = new Method (current_class, generic, (FullNamedExpression) yyVals[-7+yyTop], (Modifiers) yyVals[-8+yyTop],
				     name, current_local_parameters, (Attributes) yyVals[-9+yyTop]);
				     
		if (yyVals[0+yyTop] != null && ((method.ModFlags & Modifiers.OVERRIDE) != 0 || method.IsExplicitImpl)) {
			Report.Error (460, method.Location,
				"`{0}': Cannot specify constraints for overrides and explicit interface implementation methods",
				method.GetSignatureForError ());
		}

		current_generic_method = generic;

		if (RootContext.Documentation != null)
			method.DocComment = Lexer.consume_doc_comment ();

		yyVal = method;
	  }
  break;
case 166:
#line 1335 "cs-parser.jay"
  {
	  	valid_param_mod = ParameterModifierType.All;
	  }

void case_145()
#line 1302 "cs-parser.jay"
{
		lexer.ConstraintsParsing = false;
		valid_param_mod = 0;
		MemberName name = (MemberName) yyVals[-6+yyTop];
		current_local_parameters = (ParametersCompiled) yyVals[-3+yyTop];

		GenericMethod generic = null;
		if (name.TypeArguments != null) {
			generic = new GenericMethod (current_namespace, current_class, name,
						     (FullNamedExpression) yyVals[-7+yyTop], current_local_parameters);

			generic.SetParameterInfo ((List<Constraints>) yyVals[0+yyTop]);
		} else if (yyVals[0+yyTop] != null) {
			report.Error (80, GetLocation (yyVals[0+yyTop]),
				"Constraints are not allowed on non-generic declarations");
		}

		var method = Method.Create (current_class, generic, (FullNamedExpression) yyVals[-7+yyTop], (Modifiers) yyVals[-8+yyTop],
				     name, current_local_parameters, (Attributes) yyVals[-9+yyTop], yyVals[0+yyTop] != null);
				     
		if (doc_support)
			method.DocComment = Lexer.consume_doc_comment ();

		lbag.AddMember (method, GetModifierLocations (), GetLocation (yyVals[-5+yyTop]), GetLocation (yyVals[-2+yyTop]));
		yyVal = method;
	  }

		public Method (DeclSpace parent, GenericMethod generic,
			       FullNamedExpression return_type, Modifiers mod,
			       MemberName name, ParametersCompiled parameters, Attributes attrs)
			: base (parent, generic, return_type, mod,
				parent.PartialContainer.Kind == MemberKind.Interface ? AllowedModifiersInterface :
				parent.PartialContainer.Kind == MemberKind.Struct ? AllowedModifiersStruct :
				AllowedModifiersClass,
				name, attrs, parameters)
		{
		}