C# BasePropertyDeclarationSyntax類代碼示例

 public static void CheckForFormat(NeosSdiMef neosSdiMef, CodingRule rule, BasePropertyDeclarationSyntax _property, string text, string textFull, int spanStart, int spanEnd)
 {
     switch (rule.RuleCase)
     {
         case CodingRuleCaseEnum.UpperCamelCase:
             string upperText = rule.RuleFirstLetter + text.UpperCamelCase();
             if (text != upperText)
             {
                 neosSdiMef.AddDecorationError(_property, textFull, "Replace " + text + " by " + upperText, () =>
                 {
                     var span = Span.FromBounds(spanStart, spanEnd);
                     neosSdiMef._textView.TextBuffer.Replace(span, upperText);
                 });
             }
             break;
         case CodingRuleCaseEnum.LowerCamelCase:
             string lowerText = rule.RuleFirstLetter + text.LowerCamelCase();
             if (text != lowerText)
             {
                 neosSdiMef.AddDecorationError(_property, textFull, "Replace " + text + " by " + lowerText, () =>
                 {
                     var span = Span.FromBounds(spanStart, spanEnd);
                     neosSdiMef._textView.TextBuffer.Replace(span, lowerText);
                 });
             }
             break;
         default:
             break;
     }
 }

        private static async Task<Document> ApplyFix(
            Document document
            , BaseTypeSyntax derivingClass
            , BasePropertyDeclarationSyntax viewModelProperty
            , CancellationToken cancellationToken)
        {
            var genericClassDeclaration = SyntaxFactory.SimpleBaseType(
                SyntaxFactory.GenericName(
                    SyntaxFactory.Identifier(
                            derivingClass.Type.ToString()
                        )
                    )
                    .WithTypeArgumentList(
                        SyntaxFactory.TypeArgumentList(
                            SyntaxFactory.SingletonSeparatedList(viewModelProperty.Type)
                        )
                    )
                ).WithAdditionalAnnotations(Formatter.Annotation);

            var editor = await DocumentEditor.CreateAsync(document, cancellationToken);
            editor.RemoveNode(viewModelProperty);
            editor.ReplaceNode(derivingClass, genericClassDeclaration);

            return editor.GetChangedDocument();
        }

        public void AddDecorationError(BasePropertyDeclarationSyntax _property, string textFull, string toolTipText, FixErrorCallback errorCallback)
        {
            var lineSpan = tree.GetLineSpan(_property.Span, usePreprocessorDirectives: false);
            int lineNumber = lineSpan.StartLinePosition.Line;
            var line = _textView.TextSnapshot.GetLineFromLineNumber(lineNumber);
            var textViewLine = _textView.GetTextViewLineContainingBufferPosition(line.Start);
            int startSpace = textFull.Length - textFull.TrimStart().Length;
            int endSpace = textFull.Length - textFull.TrimEnd().Length;

            SnapshotSpan span = new SnapshotSpan(_textView.TextSnapshot, Span.FromBounds(line.Start.Position + startSpace, line.End.Position - endSpace));
            Geometry g = _textView.TextViewLines.GetMarkerGeometry(span);
            if (g != null)
            {
                rects.Add(g.Bounds);

                GeometryDrawing drawing = new GeometryDrawing(_brush, _pen, g);
                drawing.Freeze();

                DrawingImage drawingImage = new DrawingImage(drawing);
                drawingImage.Freeze();

                Image image = new Image();
                image.Source = drawingImage;
                //image.Visibility = Visibility.Hidden;

                Canvas.SetLeft(image, g.Bounds.Left);
                Canvas.SetTop(image, g.Bounds.Top);
                _layer.AddAdornment(AdornmentPositioningBehavior.TextRelative, span, null, image, (t, ui) =>
                {
                    rects.Remove(g.Bounds);
                });

                DrawIcon(span, g.Bounds.Left - 30, g.Bounds.Top, toolTipText, errorCallback);
            }
        }

        private static bool HasBothAccessors(BasePropertyDeclarationSyntax property)
        {
            var accessors = property.AccessorList.Accessors;
            var getter = accessors.FirstOrDefault(ad => ad.Kind() == SyntaxKind.GetAccessorDeclaration);
            var setter = accessors.FirstOrDefault(ad => ad.Kind() == SyntaxKind.SetAccessorDeclaration);

            return getter?.Body?.Statements.Count == 1 && setter?.Body?.Statements.Count == 1;
        }

        public BasePropertyDeclarationTranslation(BasePropertyDeclarationSyntax syntax, SyntaxTranslation parent) : base(syntax, parent)
        {
            Type = syntax.Type.Get<TypeTranslation>(this);
            AccessorList = syntax.AccessorList.Get<AccessorListTranslation>(this);
            Modifiers = syntax.Modifiers.Get(this);

            AccessorList.SetModifier(Modifiers);
        }

        /// <summary>
        /// Returns true if both get and set accessors exist on the given property; otherwise false.
        /// </summary>
        private static bool HasBothAccessors(BasePropertyDeclarationSyntax property)
        {
            var accessors = property.AccessorList.Accessors;
            var getter = accessors.FirstOrDefault(ad => ad.Kind() == SyntaxKind.GetAccessorDeclaration);
            var setter = accessors.FirstOrDefault(ad => ad.Kind() == SyntaxKind.SetAccessorDeclaration);

            if (getter != null && setter != null)
            {
                // The getter and setter should have a body.
                return getter.Body != null && setter.Body != null;
            }

            return false;
        }

        private static async Task<Document> ConvertToExpressionBodiedMemberAsync(Document document, BasePropertyDeclarationSyntax declaration, CancellationToken cancellationToken)
        {
            var accessors = declaration.AccessorList.Accessors;
            var body = accessors[0].Body;
            var returnStatement = body.Statements[0] as ReturnStatementSyntax;

            var arrowExpression = SyntaxFactory.ArrowExpressionClause(
                returnStatement.Expression);

            var newDeclaration = declaration;

            newDeclaration = ((dynamic)declaration)
                .WithAccessorList(null)
                .WithExpressionBody(arrowExpression)
                .WithSemicolon(SyntaxFactory.Token(SyntaxKind.SemicolonToken));

            newDeclaration = newDeclaration.WithAdditionalAnnotations(Formatter.Annotation);

            return await ReplaceNodeAsync(document, declaration, newDeclaration, cancellationToken);
        }

        private static void AnalyzeProperty(SyntaxNodeAnalysisContext context, BasePropertyDeclarationSyntax propertyDeclaration)
        {
            if (propertyDeclaration?.AccessorList == null)
            {
                return;
            }

            var accessors = propertyDeclaration.AccessorList.Accessors;
            if (propertyDeclaration.AccessorList.IsMissing ||
                accessors.Count != 2)
            {
                return;
            }

            if (accessors[0].Kind() == SyntaxKind.SetAccessorDeclaration &&
                accessors[1].Kind() == SyntaxKind.GetAccessorDeclaration)
            {
                context.ReportDiagnostic(Diagnostic.Create(Descriptor, accessors[0].GetLocation()));
            }
        }

 public override ISymbol GetDeclaredSymbol(BasePropertyDeclarationSyntax declarationSyntax, CancellationToken cancellationToken = default(CancellationToken))
 {
     // Can't define property inside member.
     return null;
 }

            private VirtualTreePoint GetEndPoint(SourceText text, BasePropertyDeclarationSyntax node, EnvDTE.vsCMPart part)
            {
                int endPosition;

                switch (part)
                {
                    case EnvDTE.vsCMPart.vsCMPartName:
                    case EnvDTE.vsCMPart.vsCMPartAttributes:
                    case EnvDTE.vsCMPart.vsCMPartHeader:
                    case EnvDTE.vsCMPart.vsCMPartWhole:
                    case EnvDTE.vsCMPart.vsCMPartBodyWithDelimiter:
                    case EnvDTE.vsCMPart.vsCMPartHeaderWithAttributes:
                        throw Exceptions.ThrowENotImpl();

                    case EnvDTE.vsCMPart.vsCMPartAttributesWithDelimiter:
                        if (node.AttributeLists.Count == 0)
                        {
                            throw Exceptions.ThrowEFail();
                        }

                        endPosition = node.AttributeLists.Last().Span.End;
                        break;

                    case EnvDTE.vsCMPart.vsCMPartWholeWithAttributes:
                        endPosition = node.Span.End;
                        break;

                    case EnvDTE.vsCMPart.vsCMPartNavigate:
                        var firstAccessorNode = FindFirstAccessorNode(node);
                        if (firstAccessorNode != null)
                        {
                            if (firstAccessorNode.Body != null)
                            {
                                return GetBodyEndPoint(text, firstAccessorNode.Body.CloseBraceToken);
                            }
                            else
                            {
                                // This is total weirdness from the old C# code model with auto props.
                                // If there isn't a body, the semi-colon is used
                                return GetBodyEndPoint(text, firstAccessorNode.SemicolonToken);
                            }
                        }

                        throw Exceptions.ThrowEFail();

                    case EnvDTE.vsCMPart.vsCMPartBody:
                        if (node.AccessorList != null && !node.AccessorList.CloseBraceToken.IsMissing)
                        {
                            return GetBodyEndPoint(text, node.AccessorList.CloseBraceToken);
                        }

                        throw Exceptions.ThrowEFail();

                    default:
                        throw Exceptions.ThrowEInvalidArg();
                }

                return new VirtualTreePoint(node.SyntaxTree, text, endPosition);
            }

 private static bool IsNotPublicModifier(BasePropertyDeclarationSyntax property, string modifier)
 {
     return property.Modifiers.Any(x => string.Compare(x.Text, modifier, StringComparison.InvariantCultureIgnoreCase) == 0);
 }

 private SyntaxNode RegisterPropertyLikeDeclarationCodeFix(SyntaxNode syntaxRoot, BasePropertyDeclarationSyntax node, IndentationOptions indentationOptions)
 {
     return this.ReformatElement(syntaxRoot, node, node.AccessorList.OpenBraceToken, node.AccessorList.CloseBraceToken, indentationOptions);
 }

        // CONSIDER: if the parameters were computed lazily, ParameterCount could be overridden to fall back on the syntax (as in SourceMemberMethodSymbol).

        private SourcePropertySymbol(
            SourceMemberContainerTypeSymbol containingType,
            Binder bodyBinder,
            BasePropertyDeclarationSyntax syntax,
            string name,
            Location location,
            DiagnosticBag diagnostics)
        {
            // This has the value that IsIndexer will ultimately have, once we've populated the fields of this object.
            bool isIndexer = syntax.Kind() == SyntaxKind.IndexerDeclaration;
            var interfaceSpecifier = GetExplicitInterfaceSpecifier(syntax);
            bool isExplicitInterfaceImplementation = (interfaceSpecifier != null);

            _location = location;
            _containingType = containingType;
            _syntaxRef = syntax.GetReference();

            SyntaxTokenList modifiers = syntax.Modifiers;
            bodyBinder = bodyBinder.WithUnsafeRegionIfNecessary(modifiers);
            bodyBinder = bodyBinder.WithAdditionalFlagsAndContainingMemberOrLambda(BinderFlags.SuppressConstraintChecks, this);

            bool modifierErrors;
            _modifiers = MakeModifiers(modifiers, isExplicitInterfaceImplementation, isIndexer, location, diagnostics, out modifierErrors);
            this.CheckAccessibility(location, diagnostics);

            this.CheckModifiers(location, isIndexer, diagnostics);

            if (isIndexer && !isExplicitInterfaceImplementation)
            {
                // Evaluate the attributes immediately in case the IndexerNameAttribute has been applied.
                // NOTE: we want IsExplicitInterfaceImplementation, IsOverride, Locations, and the syntax reference
                // to be initialized before we pass this symbol to LoadCustomAttributes.

                // CONSIDER: none of the information from this early binding pass is cached.  Everything will
                // be re-bound when someone calls GetAttributes.  If this gets to be a problem, we could
                // always use the real attribute bag of this symbol and modify LoadAndValidateAttributes to
                // handle partially filled bags.
                CustomAttributesBag<CSharpAttributeData> temp = null;
                LoadAndValidateAttributes(OneOrMany.Create(this.CSharpSyntaxNode.AttributeLists), ref temp, earlyDecodingOnly: true);
                if (temp != null)
                {
                    Debug.Assert(temp.IsEarlyDecodedWellKnownAttributeDataComputed);
                    var propertyData = (PropertyEarlyWellKnownAttributeData)temp.EarlyDecodedWellKnownAttributeData;
                    if (propertyData != null)
                    {
                        _sourceName = propertyData.IndexerName;
                    }
                }
            }

            string aliasQualifierOpt;
            string memberName = ExplicitInterfaceHelpers.GetMemberNameAndInterfaceSymbol(bodyBinder, interfaceSpecifier, name, diagnostics, out _explicitInterfaceType, out aliasQualifierOpt);
            _sourceName = _sourceName ?? memberName; //sourceName may have been set while loading attributes
            _name = isIndexer ? ExplicitInterfaceHelpers.GetMemberName(WellKnownMemberNames.Indexer, _explicitInterfaceType, aliasQualifierOpt) : _sourceName;
            _isExpressionBodied = false;

            bool hasAccessorList = syntax.AccessorList != null;
            var propertySyntax = syntax as PropertyDeclarationSyntax;
            var arrowExpression = propertySyntax != null
                ? propertySyntax.ExpressionBody
                : ((IndexerDeclarationSyntax)syntax).ExpressionBody;
            bool hasExpressionBody = arrowExpression != null;
            bool hasInitializer = !isIndexer && propertySyntax.Initializer != null;

            bool notRegularProperty = (!IsAbstract && !IsExtern && !isIndexer && hasAccessorList);
            AccessorDeclarationSyntax getSyntax = null;
            AccessorDeclarationSyntax setSyntax = null;
            if (hasAccessorList)
            {
                foreach (var accessor in syntax.AccessorList.Accessors)
                {
                    if (accessor.Kind() == SyntaxKind.GetAccessorDeclaration &&
                        (getSyntax == null || getSyntax.Keyword.Span.IsEmpty))
                    {
                        getSyntax = accessor;
                    }
                    else if (accessor.Kind() == SyntaxKind.SetAccessorDeclaration &&
                        (setSyntax == null || setSyntax.Keyword.Span.IsEmpty))
                    {
                        setSyntax = accessor;
                    }
                    else
                    {
                        continue;
                    }

                    if (accessor.Body != null)
                    {
                        notRegularProperty = false;
                    }
                }
            }
            else
            {
                notRegularProperty = false;
            }

            if (hasInitializer)
//.........這裏部分代碼省略.........

 private static ExplicitInterfaceSpecifierSyntax GetExplicitInterfaceSpecifier(BasePropertyDeclarationSyntax syntax)
 {
     switch (syntax.Kind())
     {
         case SyntaxKind.PropertyDeclaration:
             return ((PropertyDeclarationSyntax)syntax).ExplicitInterfaceSpecifier;
         case SyntaxKind.IndexerDeclaration:
             return ((IndexerDeclarationSyntax)syntax).ExplicitInterfaceSpecifier;
         default:
             throw ExceptionUtilities.UnexpectedValue(syntax.Kind());
     }
 }

        private TypeSymbol ComputeType(Binder binder, BasePropertyDeclarationSyntax syntax, DiagnosticBag diagnostics)
        {
            var type = binder.BindType(syntax.Type, diagnostics);
            HashSet<DiagnosticInfo> useSiteDiagnostics = null;

            if (!this.IsNoMoreVisibleThan(type, ref useSiteDiagnostics))
            {
                // "Inconsistent accessibility: indexer return type '{1}' is less accessible than indexer '{0}'"
                // "Inconsistent accessibility: property type '{1}' is less accessible than property '{0}'"
                diagnostics.Add((this.IsIndexer ? ErrorCode.ERR_BadVisIndexerReturn : ErrorCode.ERR_BadVisPropertyType), _location, this, type);
            }

            diagnostics.Add(_location, useSiteDiagnostics);

            if (type.SpecialType == SpecialType.System_Void)
            {
                ErrorCode errorCode = this.IsIndexer ? ErrorCode.ERR_IndexerCantHaveVoidType : ErrorCode.ERR_PropertyCantHaveVoidType;
                diagnostics.Add(errorCode, _location, this);
            }

            return type;
        }