C# CSharp.Constructor类代码示例

			public override void Visit (Constructor c)
			{
				ConstructorDeclaration newConstructor = new ConstructorDeclaration ();
				var location = LocationsBag.GetMemberLocation (c);
				AddModifiers (newConstructor, location);
				newConstructor.AddChild (new Identifier (c.MemberName.Name, Convert (c.MemberName.Location)), AbstractNode.Roles.Identifier);
				if (location != null) {
					newConstructor.AddChild (new CSharpTokenNode (Convert (location[0]), 1), MethodDeclaration.Roles.LPar);
					newConstructor.AddChild (new CSharpTokenNode (Convert (location[1]), 1), MethodDeclaration.Roles.RPar);
				}
				
				if (c.Block != null)
					newConstructor.AddChild ((INode)c.Block.Accept (this), ConstructorDeclaration.Roles.Body);
				
				typeStack.Peek ().AddChild (newConstructor, TypeDeclaration.Roles.Member);
			}

		/// <summary>
		/// Defines the default constructors 
		/// </summary>
		protected virtual Constructor DefineDefaultConstructor (bool is_static)
		{
			// The default instance constructor is public
			// If the class is abstract, the default constructor is protected
			// The default static constructor is private

			Modifiers mods;
			ParametersCompiled parameters = null;
			if (is_static) {
				mods = Modifiers.STATIC | Modifiers.PRIVATE;
				parameters = ParametersCompiled.EmptyReadOnlyParameters;
			} else {
				mods = ((ModFlags & Modifiers.ABSTRACT) != 0) ? Modifiers.PROTECTED : Modifiers.PUBLIC;
				parameters = PrimaryConstructorParameters ?? ParametersCompiled.EmptyReadOnlyParameters;
			}

			var c = new Constructor (this, MemberName.Name, mods, null, parameters, Location);
			if (Kind == MemberKind.Class)
				c.Initializer = new GeneratedBaseInitializer (Location, PrimaryConstructorBaseArguments);

			if (PrimaryConstructorParameters != null && !is_static) {
				c.IsPrimaryConstructor = true;
				c.caching_flags |= Flags.MethodOverloadsExist;
			}
			
			AddConstructor (c, true);
			if (PrimaryConstructorBlock == null) {
				c.Block = new ToplevelBlock (Compiler, parameters, Location) {
					IsCompilerGenerated = true
				};
			} else {
				c.Block = PrimaryConstructorBlock;
			}

			return c;
		}

			public override void Visit (Constructor c)
			{
				DomMethod method = new DomMethod ();
				method.Name = ".ctor";
				method.Documentation = RetrieveDocumentation (c.Location.Row);
				method.Location = Convert (c.MemberName.Location);
				method.Modifiers = ConvertModifiers (c.ModFlags);
				if (c.Block != null) {
					var location = LocationsBag.GetMemberLocation (c);
					var region = ConvertRegion (location != null ? location[1] : c.Block.StartLocation, c.Block.EndLocation);
					if (location != null)
						region.Start = new DomLocation (region.Start.Line, region.Start.Column + 1);
					method.BodyRegion = region;
				}
				method.Modifiers = ConvertModifiers (c.ModFlags) | MonoDevelop.Projects.Dom.Modifiers.SpecialName;
				method.MethodModifier |= MethodModifier.IsConstructor;
				AddAttributes (method, c.OptAttributes, c);
				AddParameter (method, c.ParameterInfo);
				AddExplicitInterfaces (method, c);
				method.DeclaringType = typeStack.Peek ();
				typeStack.Peek ().Add (method);
			}

			public override void Visit(Constructor c)
			{
				var newConstructor = new ConstructorDeclaration();
				AddAttributeSection(newConstructor, c);
				var location = LocationsBag.GetMemberLocation(c);
				AddModifiers(newConstructor, location);
				newConstructor.AddChild(Identifier.Create(c.MemberName.Name, Convert(c.MemberName.Location)), Roles.Identifier);
				if (location != null && location.Count > 0)
					newConstructor.AddChild(new CSharpTokenNode(Convert(location [0]), Roles.LPar), Roles.LPar);
				
				AddParameter(newConstructor, c.ParameterInfo);
				if (location != null && location.Count > 1)
					newConstructor.AddChild(new CSharpTokenNode(Convert(location [1]), Roles.RPar), Roles.RPar);
				
				if (c.Initializer != null) {
					var initializer = new ConstructorInitializer();
					initializer.ConstructorInitializerType = c.Initializer is ConstructorBaseInitializer ? ConstructorInitializerType.Base : ConstructorInitializerType.This;
					var initializerLocation = LocationsBag.GetLocations(c.Initializer);
					
					if (initializerLocation != null)
						newConstructor.AddChild(new CSharpTokenNode(Convert(initializerLocation [0]), Roles.Colon), Roles.Colon);
					
					if (initializerLocation != null && initializerLocation.Count > 1) {
						// this and base has the same length
						var r = initializer.ConstructorInitializerType == ConstructorInitializerType.This ? ConstructorInitializer.ThisKeywordRole : ConstructorInitializer.BaseKeywordRole;
						initializer.AddChild(new CSharpTokenNode(Convert(c.Initializer.Location), r), r);
						initializer.AddChild(new CSharpTokenNode(Convert(initializerLocation [1]), Roles.LPar), Roles.LPar);
						AddArguments(initializer, c.Initializer.Arguments);
						initializer.AddChild(new CSharpTokenNode(Convert(initializerLocation [2]), Roles.RPar), Roles.RPar);
						newConstructor.AddChild(initializer, ConstructorDeclaration.InitializerRole);
					}
				}
				
				if (c.Block != null)
					newConstructor.AddChild((BlockStatement)c.Block.Accept(this), Roles.Body);
				typeStack.Peek().AddChild(newConstructor, Roles.TypeMemberRole);
			}

		public void AddConstructor (Constructor c, bool isDefault)
		{
			bool is_static = (c.ModFlags & Modifiers.STATIC) != 0;
			if (!isDefault)
				AddNameToContainer (c, is_static ? Constructor.TypeConstructorName : Constructor.ConstructorName);

			if (is_static && c.ParameterInfo.IsEmpty) {
				PartialContainer.has_static_constructor = true;
			} else {
				PartialContainer.HasInstanceConstructor = true;
			}

			members.Add (c);
		}

			public override void Visit (Constructor c)
			{
				ConstructorDeclaration newConstructor = new ConstructorDeclaration ();
				var location = LocationsBag.GetMemberLocation (c);
				AddModifiers (newConstructor, location);
				newConstructor.AddChild (new Identifier (c.MemberName.Name, Convert (c.MemberName.Location)), AstNode.Roles.Identifier);
				if (location != null)
					newConstructor.AddChild (new CSharpTokenNode (Convert (location[0]), 1), MethodDeclaration.Roles.LPar);
				
				AddParameter (newConstructor, c.ParameterInfo);
				if (location != null)
					newConstructor.AddChild (new CSharpTokenNode (Convert (location[1]), 1), MethodDeclaration.Roles.RPar);

				if (c.Initializer != null)
				{
					newConstructor.Initializer = new ConstructorInitializer();
					if (c.Initializer is ConstructorBaseInitializer)
						newConstructor.Initializer.ConstructorInitializerType = ConstructorInitializerType.Base;
					if (c.Initializer is ConstructorThisInitializer)
						newConstructor.Initializer.ConstructorInitializerType = ConstructorInitializerType.This;
					AddArguments(newConstructor.Initializer, location, c.Initializer.Arguments);
				}
				
				if (c.Block != null)
					newConstructor.AddChild ((BlockStatement)c.Block.Accept (this), ConstructorDeclaration.Roles.Body);
				
				typeStack.Peek ().AddChild (newConstructor, TypeDeclaration.MemberRole);
			}

void case_274()
#line 2276 "cs-parser.jay"
{
		valid_param_mod = 0;
		current_local_parameters = (ParametersCompiled) yyVals[-1+yyTop];
		
		var lt = (LocatedToken) yyVals[-4+yyTop];
		var mods = (Modifiers) yyVals[-5+yyTop];
		var c = new Constructor (current_type, lt.Value, mods, (Attributes) yyVals[-6+yyTop], current_local_parameters, lt.Location);

		if (lt.Value != current_container.MemberName.Name) {
			report.Error (1520, c.Location, "Class, struct, or interface method must have a return type");
		} else if ((mods & Modifiers.STATIC) != 0) {
			if ((mods & Modifiers.AccessibilityMask) != 0){
				report.Error (515, c.Location,
					"`{0}': static constructor cannot have an access modifier",
					c.GetSignatureForError ());
			}
		}

		current_type.AddConstructor (c);
		lbag.AddMember (c, GetModifierLocations (), GetLocation (yyVals[-2+yyTop]), GetLocation (yyVals[0+yyTop]));
		yyVal = c;

		/**/
		/* start block here, so possible anonymous methods inside*/
		/* constructor initializer can get correct parent block*/
		/**/
	  	start_block (lexer.Location);
	  }

void case_275()
#line 2305 "cs-parser.jay"
{
		if (yyVals[0+yyTop] != null) {
			var c = (Constructor) yyVals[-1+yyTop];
			c.Initializer = (ConstructorInitializer) yyVals[0+yyTop];
			
			if (c.IsStatic) {
				report.Error (514, c.Location,
					"`{0}': static constructor cannot have an explicit `this' or `base' constructor call",
					c.GetSignatureForError ());
			}
		}

		yyVal = yyVals[-1+yyTop];
	  }

void case_281()
#line 2337 "cs-parser.jay"
{
	  	--lexer.parsing_block;
		yyVal = new ConstructorBaseInitializer ((Arguments) yyVals[-1+yyTop], GetLocation (yyVals[-4+yyTop]));
		lbag.AddLocation (yyVal, GetLocation (yyVals[-5+yyTop]), GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[0+yyTop]));
	  }

void case_283()
#line 2347 "cs-parser.jay"
{
	  	--lexer.parsing_block;
		yyVal = new ConstructorThisInitializer ((Arguments) yyVals[-1+yyTop], GetLocation (yyVals[-4+yyTop]));
		lbag.AddLocation (yyVal, GetLocation (yyVals[-5+yyTop]), GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[0+yyTop]));
	  }

void case_284()
#line 2353 "cs-parser.jay"
{
		Error_SyntaxError (yyToken);	  
		yyVal = new ConstructorThisInitializer (null, GetLocation (yyVals[0+yyTop]));
		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
	  }

void case_285()
#line 2359 "cs-parser.jay"
{
		Error_SyntaxError (yyToken);
		yyVal = null;
	  }

void case_286()
#line 2367 "cs-parser.jay"
{
		if (doc_support) {
			tmpComment = Lexer.consume_doc_comment ();
			Lexer.doc_state = XmlCommentState.NotAllowed;
		}
		
		current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
	  }

void case_287()
#line 2376 "cs-parser.jay"
{
		var lt = (LocatedToken) yyVals[-3+yyTop];
		if (lt.Value != current_container.MemberName.Name){
			report.Error (574, lt.Location, "Name of destructor must match name of class");
		} else if (current_container.Kind != MemberKind.Class){
			report.Error (575, lt.Location, "Only class types can contain destructor");
		}
		
//.........这里部分代码省略.........

		/// <summary>
		/// Defines the default constructors 
		/// </summary>
		protected virtual Constructor DefineDefaultConstructor (bool is_static)
		{
			// The default instance constructor is public
			// If the class is abstract, the default constructor is protected
			// The default static constructor is private

			Modifiers mods;
			if (is_static) {
				mods = Modifiers.STATIC | Modifiers.PRIVATE;
			} else {
				mods = ((ModFlags & Modifiers.ABSTRACT) != 0) ? Modifiers.PROTECTED : Modifiers.PUBLIC;
			}

			var c = new Constructor (this, MemberName.Name, mods, null, ParametersCompiled.EmptyReadOnlyParameters, Location);
			c.Initializer = new GeneratedBaseInitializer (Location);
			
			AddConstructor (c, true);
			c.Block = new ToplevelBlock (Compiler, ParametersCompiled.EmptyReadOnlyParameters, Location) {
				IsCompilerGenerated = true
			};

			return c;
		}

		public static AnonymousTypeClass Create (CompilerContext ctx, TypeContainer parent, IList<AnonymousTypeParameter> parameters, Location loc)
		{
			string name = ClassNamePrefix + types_counter++;

			SimpleName [] t_args = new SimpleName [parameters.Count];
			TypeParameterName [] t_params = new TypeParameterName [parameters.Count];
			Parameter [] ctor_params = new Parameter [parameters.Count];
			for (int i = 0; i < parameters.Count; ++i) {
				AnonymousTypeParameter p = (AnonymousTypeParameter) parameters [i];

				t_args [i] = new SimpleName ("<" + p.Name + ">__T", p.Location);
				t_params [i] = new TypeParameterName (t_args [i].Name, null, p.Location);
				ctor_params [i] = new Parameter (t_args [i], p.Name, 0, null, p.Location);
			}

			//
			// Create generic anonymous type host with generic arguments
			// named upon properties names
			//
			AnonymousTypeClass a_type = new AnonymousTypeClass (parent.NamespaceEntry.SlaveDeclSpace,
				new MemberName (name, new TypeArguments (t_params), loc), parameters, loc);

			if (parameters.Count > 0)
				a_type.SetParameterInfo (null);

			Constructor c = new Constructor (a_type, name, Modifiers.PUBLIC | Modifiers.DEBUGGER_HIDDEN,
				null, new AnonymousParameters (ctx, ctor_params), null, loc);
			c.Block = new ToplevelBlock (ctx, c.ParameterInfo, loc);

			// 
			// Create fields and contructor body with field initialization
			//
			bool error = false;
			for (int i = 0; i < parameters.Count; ++i) {
				AnonymousTypeParameter p = (AnonymousTypeParameter) parameters [i];

				Field f = new Field (a_type, t_args [i], Modifiers.PRIVATE | Modifiers.READONLY,
					new MemberName ("<" + p.Name + ">", p.Location), null);

				if (!a_type.AddField (f)) {
					error = true;
					continue;
				}

				c.Block.AddStatement (new StatementExpression (
					new SimpleAssign (new MemberAccess (new This (p.Location), f.Name),
						c.Block.GetParameterReference (p.Name, p.Location))));

				ToplevelBlock get_block = new ToplevelBlock (ctx, p.Location);
				get_block.AddStatement (new Return (
					new MemberAccess (new This (p.Location), f.Name), p.Location));

				Property prop = new Property (a_type, t_args [i], Modifiers.PUBLIC,
					new MemberName (p.Name, p.Location), null);
				prop.Get = new Property.GetMethod (prop, 0, null, p.Location);
				prop.Get.Block = get_block;
				a_type.AddProperty (prop);
			}

			if (error)
				return null;

			a_type.AddConstructor (c);
			return a_type;
		}

		protected override bool DoDefineMembers ()
		{
			var ctor_parameters = ParametersCompiled.CreateFullyResolved (
				new [] {
					new Parameter (new TypeExpression (TypeManager.object_type, Location), "object", Parameter.Modifier.NONE, null, Location),
					new Parameter (new TypeExpression (TypeManager.intptr_type, Location), "method", Parameter.Modifier.NONE, null, Location)
				},
				new [] {
					TypeManager.object_type,
					TypeManager.intptr_type
				}
			);

			Constructor = new Constructor (this, System.Reflection.ConstructorInfo.ConstructorName,
				Modifiers.PUBLIC, null, ctor_parameters, null, Location);
			Constructor.Define ();

			//
			// Here the various methods like Invoke, BeginInvoke etc are defined
			//
			// First, call the `out of band' special method for
			// defining recursively any types we need:
			//
			var p = Parameters;

			if (!p.Resolve (this))
				return false;

			//
			// Invoke method
			//

			// Check accessibility
			foreach (var partype in p.Types) {
				if (!IsAccessibleAs (partype)) {
					Report.SymbolRelatedToPreviousError (partype);
					Report.Error (59, Location,
						"Inconsistent accessibility: parameter type `{0}' is less accessible than delegate `{1}'",
						TypeManager.CSharpName (partype), GetSignatureForError ());
				}
			}

			ReturnType = ReturnType.ResolveAsTypeTerminal (this, false);
			if (ReturnType == null)
				return false;

			var ret_type = ReturnType.Type;

			//
			// We don't have to check any others because they are all
			// guaranteed to be accessible - they are standard types.
			//
			if (!IsAccessibleAs (ret_type)) {
				Report.SymbolRelatedToPreviousError (ret_type);
				Report.Error (58, Location,
						  "Inconsistent accessibility: return type `" +
						  TypeManager.CSharpName (ret_type) + "' is less " +
						  "accessible than delegate `" + GetSignatureForError () + "'");
				return false;
			}

			CheckProtectedModifier ();

			if (RootContext.StdLib && TypeManager.IsSpecialType (ret_type)) {
				Method.Error1599 (Location, ret_type, Report);
				return false;
			}

			TypeManager.CheckTypeVariance (ret_type, Variance.Covariant, this);

			InvokeBuilder = new Method (this, null, ReturnType, MethodModifiers, new MemberName (InvokeMethodName), p, null);
			InvokeBuilder.Define ();

			//
			// Don't emit async method for compiler generated delegates (e.g. dynamic site containers)
			//
			if (TypeManager.iasyncresult_type != null && TypeManager.asynccallback_type != null && !IsCompilerGenerated) {
				DefineAsyncMethods (Parameters.CallingConvention);
			}

			return true;
		}

		public virtual void Visit (Constructor c)
		{
		}

		//
		// Defines the default constructors
		//
		void DefineDefaultConstructor (bool is_static)
		{
			Constructor c;
			int mods = 0;

			c = new Constructor (Basename, Parameters.EmptyReadOnlyParameters,
					     new ConstructorBaseInitializer (
						     null, Parameters.EmptyReadOnlyParameters,
						     Location.Null),
					     Location.Null);
			
			if (is_static)
				mods = Modifiers.STATIC;

			c.ModFlags = mods;

			AddConstructor (c);
			
			c.Block = new Block (null);
			
		}

		public AdditionResult AddConstructor (Constructor c)
		{
			if (c.Name != Basename) 
				return AdditionResult.NotAConstructor;

			bool is_static = (c.ModFlags & Modifiers.STATIC) != 0;
			
			if (is_static){
				have_static_constructor = true;
				if (default_static_constructor != null){
					Console.WriteLine ("I have a static constructor already");
					Console.WriteLine ("   " + default_static_constructor);
					return AdditionResult.MethodExists;
				}

				default_static_constructor = c;
			} else {
				if (c.IsDefault ()){
					if (default_constructor != null)
						return AdditionResult.MethodExists;
					default_constructor = c;
				}
				
				if (instance_constructors == null)
					instance_constructors = new ArrayList ();
				
				instance_constructors.Add (c);
			}
			
			return AdditionResult.Success;
		}

			public override void Visit (Constructor c)
			{
				ConstructorDeclaration newConstructor = new ConstructorDeclaration ();
				AddAttributeSection (newConstructor, c);
				var location = LocationsBag.GetMemberLocation (c);
				AddModifiers (newConstructor, location);
				newConstructor.AddChild (Identifier.Create (c.MemberName.Name, Convert (c.MemberName.Location)), AstNode.Roles.Identifier);
				if (location != null)
					newConstructor.AddChild (new CSharpTokenNode (Convert (location[0]), 1), MethodDeclaration.Roles.LPar);
				
				AddParameter (newConstructor, c.ParameterInfo);
				if (location != null)
					newConstructor.AddChild (new CSharpTokenNode (Convert (location[1]), 1), MethodDeclaration.Roles.RPar);
				
				if (c.Initializer != null) {
					var initializer = new ConstructorInitializer ();
					initializer.ConstructorInitializerType = c.Initializer is ConstructorBaseInitializer ? ConstructorInitializerType.Base : ConstructorInitializerType.This;
					var initializerLocation = LocationsBag.GetLocations (c.Initializer);
					
					if (initializerLocation != null)
						newConstructor.AddChild (new CSharpTokenNode (Convert (initializerLocation[0]), 1), ConstructorDeclaration.Roles.Colon);
					// this and base has the same length
					initializer.AddChild (new CSharpTokenNode (Convert (c.Initializer.Location), "this".Length), ConstructorDeclaration.Roles.Keyword);
					if (initializerLocation != null)
						initializer.AddChild (new CSharpTokenNode (Convert (initializerLocation[1]), 1), ConstructorDeclaration.Roles.LPar);
					AddArguments (initializer, LocationsBag.GetLocations (c.Initializer.Arguments), c.Initializer.Arguments);
					if (initializerLocation != null)
						initializer.AddChild (new CSharpTokenNode (Convert (initializerLocation[2]), 1), ConstructorDeclaration.Roles.RPar);
					newConstructor.AddChild (initializer, ConstructorDeclaration.InitializerRole);
				}
				
				if (c.Block != null)
					newConstructor.AddChild ((BlockStatement)c.Block.Accept (this), ConstructorDeclaration.Roles.Body);
				
				typeStack.Peek ().AddChild (newConstructor, TypeDeclaration.MemberRole);
			}

		public void AddConstructor (Constructor c)
		{
			bool is_static = (c.ModFlags & Modifiers.STATIC) != 0;
			if (!AddToContainer (c, is_static ? Constructor.ConstructorName : Constructor.TypeConstructorName))
				return;
			
			if (is_static && c.ParameterInfo.IsEmpty){
				if (default_static_constructor != null) {
				    Report.SymbolRelatedToPreviousError (default_static_constructor);
					Report.Error (111, c.Location,
						"A member `{0}' is already defined. Rename this member or use different parameter types",
						c.GetSignatureForError ());
				    return;
				}

				default_static_constructor = c;
			} else {
				if (c.ParameterInfo.IsEmpty)
					default_constructor = c;
				
				if (instance_constructors == null)
					instance_constructors = new List<Constructor> ();
				
				instance_constructors.Add (c);
			}
		}