private void AddAccessorNode(AccessorListSyntax accessorList, SyntaxKind filter)
{
var accessor = accessorList.Accessors.FirstOrDefault(x => x.IsKind(filter));
if (accessor != null)
{
_members.Add(accessor);
}
}
protected override CombinedSyntaxNode[] QueryTargetNodesFunc()
{
// this.BaseNode.Parent = SyntaxList<AccessorDeclarationSyntax>
// this.BaseNode.Parent.Parent = AccessorListSyntax
// this.BaseNode.Parent.Parent.Parent = PropertyDeclarationSyntax
AccessorListSyntax parent = this.BaseNode?.Parent
as AccessorListSyntax ?? throw new InvalidOperationException(
$"Unable to query the parent node for {nameof(AccessorDeclarationState)}");
return(parent.Accessors.Select(x => new CombinedSyntaxNode(x)).ToArray());
}
public static async Task ComputeRefactoringsAsync(RefactoringContext context, IndexerDeclarationSyntax indexerDeclaration)
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.UseExpressionBodiedMember) &&
context.SupportsCSharp6)
{
AccessorListSyntax accessorList = indexerDeclaration.AccessorList;
if (accessorList != null &&
context.Span.IsEmptyAndContainedInSpanOrBetweenSpans(accessorList))
{
AccessorDeclarationSyntax accessor = indexerDeclaration
.AccessorList?
.Accessors
.SingleOrDefault(shouldThrow: false);
if (accessor?.AttributeLists.Any() == false &&
accessor.IsKind(SyntaxKind.GetAccessorDeclaration) &&
accessor.Body != null &&
(UseExpressionBodiedMemberAnalysis.GetReturnExpression(accessor.Body) != null))
{
context.RegisterRefactoring(
UseExpressionBodiedMemberRefactoring.Title,
ct => UseExpressionBodiedMemberRefactoring.RefactorAsync(context.Document, indexerDeclaration, ct),
RefactoringIdentifiers.UseExpressionBodiedMember);
}
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MakeMemberAbstract) &&
indexerDeclaration.HeaderSpan().Contains(context.Span))
{
MakeIndexerAbstractRefactoring.ComputeRefactoring(context, indexerDeclaration);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.MakeMemberVirtual) &&
indexerDeclaration.HeaderSpan().Contains(context.Span))
{
MakeIndexerVirtualRefactoring.ComputeRefactoring(context, indexerDeclaration);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.CopyDocumentationCommentFromBaseMember) &&
indexerDeclaration.HeaderSpan().Contains(context.Span))
{
await CopyDocumentationCommentFromBaseMemberRefactoring.ComputeRefactoringAsync(context, indexerDeclaration).ConfigureAwait(false);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.AddMemberToInterface) &&
context.Span.IsEmptyAndContainedInSpanOrBetweenSpans(indexerDeclaration.ThisKeyword))
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
AddMemberToInterfaceRefactoring.ComputeRefactoring(context, indexerDeclaration, semanticModel);
}
}
private static AccessorDeclarationSyntax Accessor(this AccessorListSyntax accessorList, SyntaxKind kind)
{
if (accessorList == null)
{
throw new ArgumentNullException(nameof(accessorList));
}
return(accessorList
.Accessors
.FirstOrDefault(accessor => accessor.IsKind(kind)));
}
private static void ReportDiagnostic(SyntaxNodeAnalysisContext context, AccessorListSyntax accessorList, ExpressionSyntax expression)
{
DiagnosticHelpers.ReportDiagnostic(context, DiagnosticDescriptors.UseExpressionBodiedMember, accessorList);
if (expression.Parent is ReturnStatementSyntax returnStatement)
{
DiagnosticHelpers.ReportToken(context, DiagnosticDescriptors.UseExpressionBodiedMemberFadeOut, returnStatement.ReturnKeyword);
}
CSharpDiagnosticHelpers.ReportBraces(context, DiagnosticDescriptors.UseExpressionBodiedMemberFadeOut, accessorList);
}
private AccessorListSyntax UpdateAccessorList(AccessorListSyntax accessorList)
{
if (accessorList == null)
{
var getter = SyntaxFactory.AccessorDeclaration(SyntaxKind.GetAccessorDeclaration)
.WithSemicolonToken(SyntaxFactory.Token(SyntaxKind.SemicolonToken));
return(SyntaxFactory.AccessorList(SyntaxFactory.List(Enumerable.Repeat(getter, 1))));
}
return(accessorList.WithAccessors(SyntaxFactory.List(GetAccessors(accessorList.Accessors))));
}
private static void AnalyzePropertyDeclaration(SyntaxNodeAnalysisContext context)
{
var propertyDeclaration = (PropertyDeclarationSyntax)context.Node;
if (propertyDeclaration.ContainsDirectives)
{
return;
}
if (propertyDeclaration.ContainsDiagnostics)
{
return;
}
if (propertyDeclaration.AttributeLists.Any())
{
return;
}
if (!CheckModifiers(propertyDeclaration.Modifiers))
{
return;
}
if (propertyDeclaration.HasDocumentationComment())
{
return;
}
if (!propertyDeclaration.DescendantTrivia(propertyDeclaration.Span).All(f => f.IsWhitespaceOrEndOfLineTrivia()))
{
return;
}
AccessorListSyntax accessorList = propertyDeclaration.AccessorList;
if (accessorList == null)
{
return;
}
foreach (AccessorDeclarationSyntax accessor in accessorList.Accessors)
{
if (!IsFixable(propertyDeclaration, accessor, context.SemanticModel, context.CancellationToken))
{
return;
}
}
DiagnosticHelpers.ReportDiagnostic(context,
DiagnosticDescriptors.RemoveRedundantOverridingMember,
propertyDeclaration,
CSharpFacts.GetTitle(propertyDeclaration));
}
public override SyntaxNode VisitAccessorList(AccessorListSyntax node)
{
if (node != this.ContainerOfStatementsOrFieldToReplace)
{
return(base.VisitAccessorList(node));
}
var newAccessors = VisitList(ReplaceAccessors(node.Accessors));
return(node.WithAccessors(newAccessors));
}
private static AccessorListSyntax CreateAccessorList(BlockSyntax block, bool singleline)
{
AccessorListSyntax accessorList = AccessorList(GetAccessorDeclaration(block));
if (singleline)
{
accessorList = accessorList.RemoveWhitespace();
}
return(accessorList);
}
public static void AnalyzePropertyDeclaration(SyntaxNodeAnalysisContext context)
{
if (context.Node.ContainsDiagnostics)
{
return;
}
var propertyDeclaration = (PropertyDeclarationSyntax)context.Node;
EqualsValueClauseSyntax initializer = propertyDeclaration.Initializer;
if (initializer == null)
{
return;
}
if (initializer.SpanOrLeadingTriviaContainsDirectives())
{
return;
}
ExpressionSyntax value = initializer.Value;
if (value == null)
{
return;
}
AccessorListSyntax accessorList = propertyDeclaration.AccessorList;
if (accessorList == null)
{
return;
}
if (accessorList.Accessors.Any(f => !f.IsAutoImplemented()))
{
return;
}
ITypeSymbol typeSymbol = context.SemanticModel.GetTypeSymbol(propertyDeclaration.Type, context.CancellationToken);
if (typeSymbol?.IsErrorType() != false)
{
return;
}
if (!context.SemanticModel.IsDefaultValue(typeSymbol, value, context.CancellationToken))
{
return;
}
DiagnosticHelpers.ReportDiagnostic(context, DiagnosticDescriptors.RemoveRedundantAutoPropertyInitialization, value);
}
public static BasePropertyDeclarationSyntax WithAccessorList(this BasePropertyDeclarationSyntax node, AccessorListSyntax accessorList)
{
switch (node.Kind())
{
case SyntaxKind.IndexerDeclaration:
return ((IndexerDeclarationSyntax)node).WithAccessorList(accessorList);
case SyntaxKind.PropertyDeclaration:
return (((PropertyDeclarationSyntax)node)).WithAccessorList(accessorList);
}
throw new NotImplementedException();
}
protected static BlockSyntax GetBodyFromSingleGetAccessor(AccessorListSyntax accessorList)
{
if (accessorList != null &&
accessorList.Accessors.Count == 1 &&
accessorList.Accessors[0].AttributeLists.Count == 0 &&
accessorList.Accessors[0].IsKind(SyntaxKind.GetAccessorDeclaration))
{
return(accessorList.Accessors[0].Body);
}
return(null);
}
private static bool CanRefactor(AccessorListSyntax accessorList)
{
if (accessorList?.Accessors.Count == 1)
{
AccessorDeclarationSyntax accessor = accessorList.Accessors[0];
return(accessor.IsKind(SyntaxKind.GetAccessorDeclaration) &&
CanRefactor(accessor.Body));
}
return(false);
}
public static ExpressionSyntax GetReturnExpression(AccessorListSyntax accessorList)
{
AccessorDeclarationSyntax accessor = accessorList?.Accessors.SingleOrDefault(shouldThrow: false);
if (accessor?.Kind() == SyntaxKind.GetAccessorDeclaration &&
!accessor.AttributeLists.Any())
{
return(GetReturnExpression(accessor.Body));
}
return(default(ExpressionSyntax));
}
protected static AccessorDeclarationSyntax GetSingleGetAccessor(AccessorListSyntax accessorList)
{
if (accessorList != null &&
accessorList.Accessors.Count == 1 &&
accessorList.Accessors[0].AttributeLists.Count == 0 &&
accessorList.Accessors[0].IsKind(SyntaxKind.GetAccessorDeclaration))
{
return accessorList.Accessors[0];
}
return null;
}
public static AccessorListSyntax ExpandAccessorList(AccessorListSyntax accessorList)
{
IEnumerable <AccessorDeclarationSyntax> accessors = accessorList
.Accessors
.Select(f => f.WithBody(Block()).WithoutSemicolonToken());
AccessorListSyntax newAccessorList = AccessorList(List(accessors));
return(newAccessorList
.RemoveWhitespaceOrEndOfLineTrivia()
.WithCloseBraceToken(newAccessorList.CloseBraceToken.WithLeadingTrivia(NewLine())));
}
private static PropertyDeclarationSyntax ExpandProperty(PropertyDeclarationSyntax propertyDeclaration)
{
AccessorListSyntax accessorList = AccessorList(List(CreateAccessors(propertyDeclaration)));
accessorList = Remover.RemoveWhitespaceOrEndOfLine(accessorList)
.WithCloseBraceToken(accessorList.CloseBraceToken.WithLeadingTrivia(CSharpFactory.NewLineTrivia()));
return(propertyDeclaration
.WithoutInitializer()
.WithoutSemicolonToken()
.WithAccessorList(accessorList));
}
private static bool TryHandleAccessorList(SyntaxNodeAnalysisContext context, AccessorListSyntax accessorList)
{
if (accessorList == null)
{
return false;
}
var accessors = accessorList.Accessors;
if (accessors.Count != 1)
{
return false;
}
var accessor = accessors[0];
if (!accessor.IsKind(SyntaxKind.GetAccessorDeclaration))
{
return false;
}
if (accessor.AttributeLists.Count != 0)
{
return false;
}
var accessorBody = accessor.Body;
if (accessorBody == null)
{
return false;
}
var statements = accessorBody.Statements;
if (statements.Count == 0)
{
return false;
}
var returnStatement = statements[0] as ReturnStatementSyntax;
if (returnStatement == null ||
returnStatement.Expression == null)
{
return false;
}
FadeOutToken(context, accessorList.OpenBraceToken);
FadeOutToken(context, accessor.Keyword);
FadeOutToken(context, accessorBody.OpenBraceToken);
FadeOutToken(context, returnStatement.ReturnKeyword);
FadeOutToken(context, accessorBody.CloseBraceToken);
FadeOutToken(context, accessorList.CloseBraceToken);
return true;
}
public static Task <Document> RefactorAsync(
Document document,
PropertyDeclarationSyntax propertyDeclaration,
CancellationToken cancellationToken = default(CancellationToken))
{
AccessorListSyntax accessorList = AccessorList();
if (propertyDeclaration.ExpressionBody != null)
{
accessorList = accessorList
.AddAccessors(AutoGetAccessorDeclaration());
}
else
{
AccessorDeclarationSyntax getter = propertyDeclaration.Getter();
if (getter != null)
{
if (SyntaxAccessibility.GetExplicitAccessibility(getter) == Accessibility.Private)
{
getter = SyntaxAccessibility.WithExplicitAccessibility(getter, Accessibility.Protected);
}
accessorList = accessorList.AddAccessors(getter
.WithBody(null)
.WithSemicolonToken(SemicolonToken()));
}
AccessorDeclarationSyntax setter = propertyDeclaration.Setter();
if (setter != null)
{
if (SyntaxAccessibility.GetExplicitAccessibility(setter) == Accessibility.Private)
{
setter = SyntaxAccessibility.WithExplicitAccessibility(setter, Accessibility.Protected);
}
accessorList = accessorList.AddAccessors(setter
.WithBody(null)
.WithSemicolonToken(SemicolonToken()));
}
}
PropertyDeclarationSyntax newNode = propertyDeclaration
.WithExpressionBody(null)
.WithSemicolonToken(default(SyntaxToken))
.WithAccessorList(accessorList)
.InsertModifier(SyntaxKind.AbstractKeyword)
.RemoveModifier(SyntaxKind.VirtualKeyword)
.WithTriviaFrom(propertyDeclaration)
.WithFormatterAnnotation();
return(document.ReplaceNodeAsync(propertyDeclaration, newNode, cancellationToken));
}
public static PropertyDeclarationSyntax CreateAutoProperty(PropertyDeclarationSyntax property, EqualsValueClauseSyntax initializer)
{
AccessorListSyntax accessorList = property.AccessorList;
if (accessorList != null)
{
SyntaxList <AccessorDeclarationSyntax> newAccessors = accessorList
.Accessors
.Select(accessor =>
{
accessor = accessor.Update(
attributeLists: accessor.AttributeLists,
modifiers: accessor.Modifiers,
keyword: accessor.Keyword,
body: default(BlockSyntax),
expressionBody: default(ArrowExpressionClauseSyntax),
semicolonToken: SemicolonToken());
return(accessor.WithTriviaFrom(accessor));
})
.ToSyntaxList();
accessorList = accessorList.WithAccessors(newAccessors);
}
else
{
accessorList = AccessorList(AutoGetAccessorDeclaration())
.WithTriviaFrom(property.ExpressionBody);
}
if (accessorList
.DescendantTrivia()
.All(f => f.IsWhitespaceOrEndOfLineTrivia()))
{
accessorList = accessorList.RemoveWhitespace();
}
PropertyDeclarationSyntax newProperty = property.Update(
attributeLists: property.AttributeLists,
modifiers: property.Modifiers,
type: property.Type,
explicitInterfaceSpecifier: property.ExplicitInterfaceSpecifier,
identifier: property.Identifier.WithTrailingTrivia(Space),
accessorList: accessorList,
expressionBody: default(ArrowExpressionClauseSyntax),
initializer: initializer,
semicolonToken: (initializer != null) ? SemicolonToken() : default(SyntaxToken));
return(newProperty
.WithTriviaFrom(property)
.WithFormatterAnnotation());
}
public static Task <Document> RefactorAsync(
Document document,
PropertyDeclarationSyntax propertyDeclaration,
CancellationToken cancellationToken = default)
{
AccessorListSyntax accessorList = AccessorList(List(ExpandProperty()));
accessorList = accessorList
.RemoveWhitespace()
.WithCloseBraceToken(accessorList.CloseBraceToken.WithLeadingTrivia(NewLine()));
PropertyDeclarationSyntax newPropertyDeclaration = propertyDeclaration
.WithInitializer(null)
.WithSemicolonToken(default(SyntaxToken))
.WithAccessorList(accessorList);
newPropertyDeclaration = newPropertyDeclaration
.WithModifiers(newPropertyDeclaration.Modifiers.Replace(SyntaxKind.AbstractKeyword, SyntaxKind.VirtualKeyword))
.WithTriviaFrom(propertyDeclaration)
.WithFormatterAnnotation();
return(document.ReplaceNodeAsync(propertyDeclaration, newPropertyDeclaration, cancellationToken));
IEnumerable <AccessorDeclarationSyntax> ExpandProperty()
{
foreach (AccessorDeclarationSyntax accessor in propertyDeclaration.AccessorList.Accessors)
{
if (accessor.IsKind(SyntaxKind.GetAccessorDeclaration))
{
ExpressionSyntax value = propertyDeclaration.Initializer?.Value;
if (value != null)
{
yield return(accessor
.WithBody(Block(ReturnStatement(value)))
.WithSemicolonToken(default(SyntaxToken)));
continue;
}
}
BlockSyntax body = Block(
OpenBraceToken(),
List <StatementSyntax>(),
CloseBraceToken().WithNavigationAnnotation());
yield return(accessor
.WithBody(body)
.WithSemicolonToken(default(SyntaxToken)));
}
}
}
private static PropertyDeclarationSyntax ExpandProperty(PropertyDeclarationSyntax propertyDeclaration)
{
AccessorListSyntax accessorList = AccessorList(List(CreateAccessors(propertyDeclaration)));
accessorList = accessorList
.RemoveWhitespace()
.WithCloseBraceToken(accessorList.CloseBraceToken.WithLeadingTrivia(NewLine()));
return(propertyDeclaration
.WithInitializer(null)
.WithSemicolonToken(default(SyntaxToken))
.WithAccessorList(accessorList));
}
public static void AnalyzePropertyDeclaration(SyntaxNodeAnalysisContext context)
{
var propertyDeclaration = (PropertyDeclarationSyntax)context.Node;
AccessorListSyntax accessorList = propertyDeclaration.AccessorList;
if (accessorList == null)
{
return;
}
Analyze(context, propertyDeclaration, accessorList.OpenBraceToken, accessorList.CloseBraceToken);
}
private static ArrowExpressionClauseSyntax TryGetExpressionBody(
AccessorListSyntax accessorList, ParseOptions options)
{
if (accessorList.Accessors.Count == 1)
{
var accessor = accessorList.Accessors[0];
if (accessor.IsKind(SyntaxKind.GetAccessorDeclaration))
{
return(TryGetExpressionBody(accessor, options));
}
}
return(null);
}
private static AccessorDeclarationSyntax GetAccessor(this AccessorListSyntax accessorList, SyntaxKind accessorKind)
{
SyntaxList <AccessorDeclarationSyntax> accessors = accessorList.Accessors;
for (int i = 0; i < accessors.Count; i++)
{
if (accessors[i].IsKind(accessorKind))
{
return(accessors[i]);
}
}
return(null);
}
static SyntaxToken GetSemicolon(AccessorListSyntax accessorList)
{
var semicolon = ((ReturnStatementSyntax)accessorList.Accessors[0].Body.Statements[0]).SemicolonToken;
var trivia = semicolon.TrailingTrivia.AsEnumerable();
trivia = trivia.Where(t => !t.IsKind(SyntaxKind.EndOfLineTrivia));
var closeBraceTrivia = accessorList.CloseBraceToken.TrailingTrivia.AsEnumerable();
trivia = trivia.Concat(closeBraceTrivia);
return(semicolon.WithTrailingTrivia(trivia));
}
private static AccessorListSyntax CreateAccessorList(ExpressionSyntax expression)
{
BlockSyntax block = CreateBlock(expression);
AccessorListSyntax accessorList = AccessorList(Getter(block));
if (expression.IsSingleLine())
{
accessorList = Remover.RemoveWhitespaceOrEndOfLine(accessorList)
.WithCloseBraceToken(accessorList.CloseBraceToken.WithLeadingTrivia(NewLineTrivia()));
}
return(accessorList);
}
public static PropertyDeclarationSyntax PropertyDeclaration(SyntaxList<AttributeListSyntax> attributeLists, SyntaxTokenList modifiers, TypeSyntax type, ExplicitInterfaceSpecifierSyntax explicitInterfaceSpecifier, SyntaxToken identifier, AccessorListSyntax accessorList, ArrowExpressionClauseSyntax expressionBody, EqualsValueClauseSyntax initializer, SyntaxToken semicolonToken)
{
return PropertyDeclaration(
attributeLists,
modifiers,
refKeyword: default(SyntaxToken),
type: type,
explicitInterfaceSpecifier: explicitInterfaceSpecifier,
identifier: identifier,
accessorList: accessorList,
expressionBody: expressionBody,
initializer: initializer,
semicolonToken: semicolonToken);
}
public override void VisitPropertyDeclaration(PropertyDeclarationSyntax node)
{
VisitAttributeLists(node.AttributeLists);
if (!ShouldVisit)
{
return;
}
TypeSyntax type = node.Type;
if (type != null)
{
VisitType(type);
}
if (!ShouldVisit)
{
return;
}
EqualsValueClauseSyntax initializer = node.Initializer;
if (initializer != null)
{
VisitEqualsValueClause(initializer);
}
if (!ShouldVisit)
{
return;
}
AccessorListSyntax accessorList = node.AccessorList;
if (accessorList != null)
{
VisitAccessorList(accessorList);
}
else
{
ArrowExpressionClauseSyntax expressionBody = node.ExpressionBody;
if (expressionBody != null)
{
VisitArrowExpressionClause(expressionBody);
}
}
}
public override void VisitIndexerDeclaration(IndexerDeclarationSyntax node)
{
VisitAttributeLists(node.AttributeLists);
if (!ShouldVisit)
{
return;
}
TypeSyntax type = node.Type;
if (type != null)
{
VisitType(type);
}
if (!ShouldVisit)
{
return;
}
BracketedParameterListSyntax parameterList = node.ParameterList;
if (node != null)
{
VisitBracketedParameterList(parameterList);
}
if (!ShouldVisit)
{
return;
}
AccessorListSyntax accessorList = node.AccessorList;
if (accessorList != null)
{
VisitAccessorList(accessorList);
}
else
{
ArrowExpressionClauseSyntax expressionBody = node.ExpressionBody;
if (expressionBody != null)
{
VisitArrowExpressionClause(expressionBody);
}
}
}
private static Task <Document> AddNewLineBeforeAccessorOfFullPropertyAsync(
AccessorDeclarationSyntax accessorDeclaration,
Document document,
CancellationToken cancellationToken)
{
AccessorDeclarationSyntax newAccessorDeclaration = accessorDeclaration.AppendEndOfLineToLeadingTrivia();
var accessorList = (AccessorListSyntax)accessorDeclaration.Parent;
AccessorListSyntax newAccessorList = accessorList
.WithAccessors(accessorList.Accessors.Replace(accessorDeclaration, newAccessorDeclaration))
.WithFormatterAnnotation();
return(document.ReplaceNodeAsync(accessorList, newAccessorList, cancellationToken));
}
private static Task <Document> RemoveNewLinesFromAccessorListAsync(
Document document,
AccessorListSyntax accessorList,
CancellationToken cancellationToken)
{
TextSpan span = TextSpan.FromBounds(
accessorList.GetFirstToken().GetPreviousToken().Span.End,
accessorList.CloseBraceToken.SpanStart);
SyntaxNode newNode = accessorList.Parent
.RemoveWhitespace(span)
.WithFormatterAnnotation();
return(document.ReplaceNodeAsync(accessorList.Parent, newNode, cancellationToken));
}
private static AccessorListSyntax CreateAccessorList(ExpressionSyntax expression, SyntaxToken semicolon)
{
BlockSyntax block = CreateBlock(expression, semicolon);
AccessorListSyntax accessorList = AccessorList(GetAccessorDeclaration(block));
if (expression.IsSingleLine())
{
accessorList = accessorList
.RemoveWhitespace()
.WithCloseBraceToken(accessorList.CloseBraceToken.WithLeadingTrivia(NewLine()));
}
return(accessorList);
}
private static void ReportDiagnostic(SyntaxNodeAnalysisContext context, AccessorListSyntax accessorList, ExpressionSyntax expression)
{
context.ReportDiagnostic(
DiagnosticDescriptors.UseExpressionBodiedMember,
accessorList);
SyntaxNode parent = expression.Parent;
if (parent.IsKind(SyntaxKind.ReturnStatement))
{
context.ReportToken(FadeOutDescriptor, ((ReturnStatementSyntax)parent).ReturnKeyword);
}
context.ReportBraces(FadeOutDescriptor, accessorList);
}
public static IndexerDeclarationSyntax IndexerDeclaration(
SyntaxList<AttributeListSyntax> attributeLists,
SyntaxTokenList modifiers,
TypeSyntax type,
ExplicitInterfaceSpecifierSyntax explicitInterfaceSpecifier,
BracketedParameterListSyntax parameterList,
AccessorListSyntax accessorList)
{
return SyntaxFactory.IndexerDeclaration(
attributeLists: attributeLists,
modifiers: modifiers,
type: type,
explicitInterfaceSpecifier: explicitInterfaceSpecifier,
parameterList: parameterList,
accessorList: accessorList,
expressionBody: default(ArrowExpressionClauseSyntax));
}
public static IndexerDeclarationSyntax IndexerDeclaration(
SyntaxList<AttributeListSyntax> attributeLists,
SyntaxTokenList modifiers,
TypeSyntax type,
ExplicitInterfaceSpecifierSyntax explicitInterfaceSpecifier,
SyntaxToken thisKeyword,
BracketedParameterListSyntax parameterList,
AccessorListSyntax accessorList,
ArrowExpressionClauseSyntax expressionBody,
SyntaxToken semicolonToken)
{
return SyntaxFactory.IndexerDeclaration(
attributeLists: attributeLists,
modifiers: modifiers,
refKeyword: default(SyntaxToken),
type: type,
explicitInterfaceSpecifier: explicitInterfaceSpecifier,
thisKeyword: thisKeyword,
parameterList: parameterList,
accessorList: accessorList,
expressionBody: expressionBody,
semicolonToken: semicolonToken);
}
public void VisitAccessorList(AccessorListSyntax node)
{
if (node == null)
throw new ArgumentNullException("node");
node.Validate();
bool isSimple =
_writer.Configuration.LineBreaksAndWrapping.Other.PlaceAbstractAutoPropertyIndexerEventDeclarationOnSingleLine &&
node.Accessors.All(p =>
(!HasExtras(p) || _writer.Configuration.LineBreaksAndWrapping.Other.PlaceSingleLineAccessorAttributeOnSameLine) &&
p.Body == null
);
if (!isSimple)
{
isSimple =
_writer.Configuration.LineBreaksAndWrapping.Other.PlaceSimplePropertyIndexerEventDeclarationOnSingleLine &&
node.Accessors.All(p =>
(!HasExtras(p) || _writer.Configuration.LineBreaksAndWrapping.Other.PlaceSingleLineAccessorAttributeOnSameLine) &&
IsSimpleBody(p.Body)
);
}
if (isSimple)
{
_writer.WriteSpace();
_writer.WriteSyntax(Syntax.OpenBrace);
_writer.WriteSpace();
}
else
{
_writer.BeginBlock();
}
bool hadOne = false;
foreach (var accessor in node.Accessors)
{
if (hadOne && isSimple)
_writer.WriteSpace();
else
hadOne = true;
accessor.Accept(this);
}
if (isSimple)
{
_writer.WriteSpace();
_writer.WriteSyntax(Syntax.CloseBrace);
_writer.WriteLine();
}
else
{
_writer.EndBlock();
}
}
public static SyntaxNode TryGetEffectiveGetterBody(ArrowExpressionClauseSyntax propertyBody, AccessorListSyntax accessorList)
{
if (propertyBody != null)
{
return propertyBody.Expression;
}
return accessorList?.Accessors.Where(a => a.IsKind(SyntaxKind.GetAccessorDeclaration)).FirstOrDefault()?.Body;
}
private static ExpressionSyntax GetExpression(AccessorListSyntax accessorList)
{
return ((ReturnStatementSyntax)accessorList.Accessors[0].Body.Statements[0]).Expression;
}
private static AccessorDeclarationSyntax GetNewAccessor(AccessorListSyntax accessorList, AccessorDeclarationSyntax firstAccessor, AccessorDeclarationSyntax secondAccessor)
{
var newLeadingTrivia = GetLeadingTriviaWithoutLeadingBlankLines(secondAccessor);
if (AccessorsAreOnTheSameLine(firstAccessor, secondAccessor))
{
var leadingWhitespace = firstAccessor.GetLeadingTrivia().Where(x => x.IsKind(SyntaxKind.WhitespaceTrivia));
newLeadingTrivia = SyntaxFactory.TriviaList(TriviaHelper.MergeTriviaLists(newLeadingTrivia, SyntaxTriviaList.Empty.AddRange(leadingWhitespace)));
}
var newAccessor = accessorList.Accessors[1]
.WithBody(secondAccessor.Body)
.WithLeadingTrivia(newLeadingTrivia);
return newAccessor;
}
private AccessorListSyntax UpdateAccessorList(AccessorListSyntax accessorListSyntax, TypeSyntax type)
{
var specialType = _typeTranslation.FirstOrDefault(tt => PrettyTypeName(tt.ActualType) == type.ToFullString().Replace("global::", ""));
if (specialType != null)
{
return accessorListSyntax.WithAccessors(
SyntaxFactory.List<AccessorDeclarationSyntax>(
accessorListSyntax.Accessors.Select(a =>
a.WithBody(UpdateMethodBody(
a.Body,
type,
SyntaxFactory.ParameterList(
SyntaxFactory.SeparatedList<ParameterSyntax>( new [] { SyntaxFactory.Parameter(SyntaxFactory.ParseToken("value")).WithType(type) }))))))
);
}
return accessorListSyntax;
}
private static ArrowExpressionClauseSyntax TryGetExpressionBody(
AccessorListSyntax accessorList, ParseOptions options)
{
if (accessorList.Accessors.Count == 1)
{
var accessor = accessorList.Accessors[0];
if (accessor.IsKind(SyntaxKind.GetAccessorDeclaration))
{
return TryGetExpressionBody(accessor, options);
}
}
return null;
}
private static SyntaxToken GetSemicolon(AccessorListSyntax accessorList)
{
var semicolon = ((ReturnStatementSyntax)accessorList.Accessors[0].Body.Statements[0]).SemicolonToken;
var trivia = semicolon.TrailingTrivia.AsEnumerable();
trivia = trivia.Where(t => !t.IsKind(SyntaxKind.EndOfLineTrivia));
// Append trailing trivia from the closing brace.
var closeBraceTrivia = accessorList.CloseBraceToken.TrailingTrivia.AsEnumerable();
trivia = trivia.Concat(closeBraceTrivia);
return semicolon.WithTrailingTrivia(trivia);
}
private static ExpressionSyntax GetExpression(AccessorListSyntax accessorList, out SyntaxTriviaList leadingTrivia)
{
var returnStatement = (ReturnStatementSyntax)accessorList.Accessors[0].Body.Statements[0];
leadingTrivia = returnStatement.GetLeadingTrivia();
// TODO: Concatenate any trivia between the return keyword and the expression?
return returnStatement.Expression;
}
/// <summary>
///
/// </summary>
/// <param name="node"></param>
public override sealed void VisitAccessorList(AccessorListSyntax node)
{
this.OnNodeVisited(node, this.type.IsInstanceOfType(node));
base.VisitAccessorList(node);
}
/// <summary>
///
/// </summary>
/// <param name="node"></param>
public override sealed void VisitAccessorList(AccessorListSyntax node)
{
this.OnNodeVisited(node);
if (!this.traverseRootOnly) base.VisitAccessorList(node);
}
public IndexerDeclarationSyntax Update(SyntaxList<AttributeListSyntax> attributeLists, SyntaxTokenList modifiers, TypeSyntax type, ExplicitInterfaceSpecifierSyntax explicitInterfaceSpecifier, SyntaxToken thisKeyword, BracketedParameterListSyntax parameterList, AccessorListSyntax accessorList, ArrowExpressionClauseSyntax expressionBody, SyntaxToken semicolonToken)
{
return Update(attributeLists, modifiers, this.RefKeyword, type, explicitInterfaceSpecifier, thisKeyword, parameterList, accessorList, expressionBody, semicolonToken);
}
public static IndexerDeclarationSyntax Update(
this IndexerDeclarationSyntax syntax,
SyntaxList<AttributeListSyntax> attributeLists,
SyntaxTokenList modifiers,
TypeSyntax type,
ExplicitInterfaceSpecifierSyntax explicitInterfaceSpecifier,
SyntaxToken thisKeyword,
BracketedParameterListSyntax parameterList,
AccessorListSyntax accessorList)
{
return syntax.Update(
attributeLists,
modifiers,
default(SyntaxToken),
type,
explicitInterfaceSpecifier,
thisKeyword,
parameterList,
accessorList,
default(ArrowExpressionClauseSyntax),
default(SyntaxToken));
}
public PropertyDeclarationSyntax Update(SyntaxList<AttributeListSyntax> attributeLists, SyntaxTokenList modifiers, TypeSyntax type, ExplicitInterfaceSpecifierSyntax explicitInterfaceSpecifier, SyntaxToken identifier, AccessorListSyntax accessorList, ArrowExpressionClauseSyntax expressionBody, EqualsValueClauseSyntax initializer, SyntaxToken semicolonToken)
{
return Update(attributeLists, modifiers, this.RefKeyword, type, explicitInterfaceSpecifier, identifier, accessorList, expressionBody, initializer, semicolonToken);
}
public AccessorListTranslation(AccessorListSyntax syntax, SyntaxTranslation parent) : base(syntax, parent)
{
Accessors = syntax.Accessors.Get<AccessorDeclarationSyntax, AccessorDeclarationTranslation>(this);
}
private static AccessorDeclarationSyntax GetNewAccessor(AccessorListSyntax accessorList, AccessorDeclarationSyntax firstAccessor, AccessorDeclarationSyntax secondAccessor)
{
var newLeadingTrivia = GetLeadingTriviaWithoutLeadingBlankLines(secondAccessor);
if (AccessorsAreOnTheSameLine(firstAccessor, secondAccessor))
{
var leadingWhitespace = firstAccessor.GetLeadingTrivia().Where(x => x.IsKind(SyntaxKind.WhitespaceTrivia)).ToList();
newLeadingTrivia = SyntaxFactory.TriviaList(TriviaHelper.MergeTriviaLists(newLeadingTrivia, leadingWhitespace));
}
var newAccessor = accessorList.Accessors[1]
.WithBody(secondAccessor.Body)
.WithLeadingTrivia(newLeadingTrivia);
if (secondAccessor.GetFirstToken().HasLeadingBlankLines())
{
newAccessor.WithTrailingTrivia(SyntaxFactory.CarriageReturnLineFeed, SyntaxFactory.CarriageReturnLineFeed);
}
return newAccessor;
}