private void ReplaceQualifiedNames()
{
IEnumerable <QualifiedNameSyntax> qualifiedNames = tree.GetRoot().DescendantNodes().OfType <QualifiedNameSyntax>();
foreach (QualifiedNameSyntax oldQualifiedNameNode in qualifiedNames) // iterate over all qualified names in the file
{
if (!(oldQualifiedNameNode.Parent is QualifiedNameSyntax))
{
var qualifiedSymbolInfo = semanticModel.GetSymbolInfo(oldQualifiedNameNode);
string nsString = oldQualifiedNameNode.Left.WithoutTrivia().GetText().ToString();
if (qualifiedSymbolInfo.Symbol != null)
{
string className = qualifiedSymbolInfo.Symbol.Name.ToString();
sdk_map2 sdkMap = SDKMappingSQLConnector.GetInstance().GetSDKMapFromClassAndNamespace(TransformProject.sdkId, nsString, className);
if (sdkMap != null)
{
string newNamespace = sdkMap.namespace_map.new_namespace;
string newClassName = sdkMap.new_classname;
QualifiedNameSyntax newQualifiedNameNode = QualifiedName(IdentifierName(newNamespace), IdentifierName(newClassName)).WithTriviaFrom(oldQualifiedNameNode);
documentEditor.ReplaceNode(oldQualifiedNameNode, newQualifiedNameNode);
}
}
}
}
}
internal static void AddOnPropertyChanged(this DocumentEditor editor, ExpressionSyntax mutation, ExpressionStatementSyntax onPropertyChanged)
{
switch (mutation.Parent)
{
case SimpleLambdaExpressionSyntax lambda:
editor.ReplaceNode(
lambda,
x => x.AddStatements(onPropertyChanged));
break;
case ParenthesizedLambdaExpressionSyntax lambda:
editor.ReplaceNode(
lambda,
x => x.AddStatements(onPropertyChanged));
break;
case ExpressionStatementSyntax expressionStatement:
editor.AddOnPropertyChangedAfter(expressionStatement, onPropertyChanged);
break;
case PrefixUnaryExpressionSyntax {
Parent: IfStatementSyntax ifNot
} unary
when unary.IsKind(SyntaxKind.LogicalNotExpression) :
editor.AddOnPropertyChangedAfter(ifNot, onPropertyChanged);
break;
}
}
private static void ConvertToLambda(DocumentEditor editor, SyntaxNode toReplace, IMethodSymbol method, MethodDeclarationSyntax declaration, CancellationToken cancellationToken)
{
if (method.Parameters.TrySingle(out var parameter))
{
if (declaration.ExpressionBody is ArrowExpressionClauseSyntax expressionBody)
{
editor.ReplaceNode(
toReplace,
SyntaxFactory.ParseExpression($"{parameter.Name} => {expressionBody.Expression}")
.WithLeadingTriviaFrom(toReplace));
RemoveMethod(editor, method, declaration, cancellationToken);
}
else if (declaration.Body is BlockSyntax body &&
body.Statements.TrySingle(out var statement) &&
statement is ReturnStatementSyntax returnStatement)
{
editor.ReplaceNode(
toReplace,
SyntaxFactory.ParseExpression($"{parameter.Name} => {returnStatement.Expression}")
.WithLeadingTriviaFrom(toReplace));
RemoveMethod(editor, method, declaration, cancellationToken);
}
}
if (method.Parameters.Length == 2 &&
method.Parameters.TryElementAt(0, out var parameter1) &&
method.Parameters.TryElementAt(1, out var parameter2))
{
if (declaration.ExpressionBody is ArrowExpressionClauseSyntax expressionBody)
{
editor.ReplaceNode(
toReplace,
SyntaxFactory.ParseExpression($"({parameter1.Name}, {parameter2.Name}) => {expressionBody.Expression}")
.WithLeadingTriviaFrom(toReplace));
RemoveMethod(editor, method, declaration, cancellationToken);
}
else if (declaration.Body is BlockSyntax body &&
body.Statements.TrySingle(out var statement))
{
switch (statement)
{
case ReturnStatementSyntax returnStatement:
editor.ReplaceNode(
toReplace,
SyntaxFactory.ParseExpression($"({parameter1.Name}, {parameter2.Name}) => {returnStatement.Expression}")
.WithLeadingTriviaFrom(toReplace));
RemoveMethod(editor, method, declaration, cancellationToken);
break;
case ExpressionStatementSyntax expressionStatement:
editor.ReplaceNode(
toReplace,
SyntaxFactory.ParseExpression($"({parameter1.Name}, {parameter2.Name}) => {expressionStatement.Expression}")
.WithLeadingTriviaFrom(toReplace));
RemoveMethod(editor, method, declaration, cancellationToken);
break;
}
}
}
}
private static void UseLambda(DocumentEditor editor, IdentifierNameSyntax identifierName, CancellationToken cancellationToken)
{
if (editor.SemanticModel.TryGetSymbol(identifierName, cancellationToken, out IMethodSymbol method))
{
if (method.Parameters.Length == 0)
{
_ = editor.ReplaceNode(
identifierName,
x => SyntaxFactory.ParseExpression($"() => {x.Identifier.ValueText}()"));
}
else if (method.Parameters.TrySingle(out var parameter))
{
var parameterName = SafeParameterName(parameter, identifierName);
_ = editor.ReplaceNode(
identifierName,
x => SyntaxFactory.ParseExpression($"{parameterName} => {x.Identifier.ValueText}({parameterName})"));
}
else
{
var parameters = string.Join(", ", method.Parameters.Select(x => SafeParameterName(x, identifierName)));
_ = editor.ReplaceNode(
identifierName,
x => SyntaxFactory.ParseExpression($"({parameters}) => {x.Identifier.ValueText}({parameters})"));
}
}
}
private static void ApplyInitializeInCtorFix(
DocumentEditor editor,
ConstructorDeclarationSyntax ctor,
PropertyDeclarationSyntax property,
ObjectCreationExpressionSyntax objectCreation)
{
var member = editor.SemanticModel.UnderscoreFields()
? (ExpressionSyntax)SyntaxFactory.IdentifierName(property.Identifier.ValueText)
: SyntaxFactory.MemberAccessExpression(
SyntaxKind.SimpleMemberAccessExpression,
SyntaxFactory.ThisExpression(),
SyntaxFactory.Token(SyntaxKind.DotToken),
SyntaxFactory.IdentifierName(property.Identifier.ValueText));
var assignment =
SyntaxFactory.ExpressionStatement(
SyntaxFactory.AssignmentExpression(
SyntaxKind.SimpleAssignmentExpression,
member,
objectCreation));
editor.ReplaceNode(ctor.Body, (x, _) => ((BlockSyntax)x).AddStatements(assignment));
editor.ReplaceNode(
property,
(x, _) => ((PropertyDeclarationSyntax)x).WithExpressionBody(null)
.WithSemicolonToken(SyntaxFactory.Token(SyntaxKind.None))
.WithAccessorList(GetOnlyAccessorList));
}
private static void RemoveExpression(DocumentEditor editor, ArgumentSyntax argument, IMethodSymbol invoker, bool usesUnderscoreNames, CancellationToken cancellationToken)
{
var invocation = argument.FirstAncestorOrSelf <InvocationExpressionSyntax>();
if (PropertyChanged.TryGetInvokedPropertyChangedName(invocation, editor.SemanticModel, cancellationToken, out var name) == AnalysisResult.Yes)
{
var property = editor.SemanticModel.GetDeclaredSymbolSafe(argument.FirstAncestorOrSelf <PropertyDeclarationSyntax>(), cancellationToken);
if (property?.Name == name)
{
editor.ReplaceNode(
invocation,
SyntaxFactory.ParseExpression(Snippet.OnPropertyChanged(invoker, property?.Name, usesUnderscoreNames).TrimEnd(';'))
.WithSimplifiedNames()
.WithLeadingElasticLineFeed()
.WithTrailingElasticLineFeed()
.WithAdditionalAnnotations(Formatter.Annotation));
}
else
{
editor.ReplaceNode(
invocation,
SyntaxFactory.ParseExpression(Snippet.OnOtherPropertyChanged(invoker, name, usesUnderscoreNames).TrimEnd(';'))
.WithSimplifiedNames()
.WithLeadingElasticLineFeed()
.WithTrailingElasticLineFeed()
.WithAdditionalAnnotations(Formatter.Annotation));
}
}
}
private static void ReplaceMagicStrings(
Dictionary <string, string> constants,
SyntaxNode classNode,
DocumentEditor editor,
MagicStringsReplacementStatistics stats)
{
foreach (var child in classNode.DescendantNodes().OfType <LiteralExpressionSyntax>().Where(s => s.Kind() == SyntaxKind.StringLiteralExpression))
{
var value = child.WithoutTrivia().GetText().ToString();
if (value == "\"\"")
{
if (IsIgnoredEmptyStringNode(child))
{
continue;
}
var stringEmpty = SyntaxFactory.MemberAccessExpression(
SyntaxKind.SimpleMemberAccessExpression,
SyntaxFactory.PredefinedType(SyntaxFactory.Token(SyntaxKind.StringKeyword)),
SyntaxFactory.IdentifierName("Empty"));
if (child.HasLeadingTrivia)
{
stringEmpty = stringEmpty.WithLeadingTrivia(child.GetLeadingTrivia());
}
if (child.HasTrailingTrivia)
{
stringEmpty = stringEmpty.WithTrailingTrivia(child.GetTrailingTrivia());
}
editor.ReplaceNode(child, stringEmpty);
stats.EmptyStringsReplaced++;
}
if (constants.TryGetValue(value, out var name))
{
if (IsNodeConst(child))
{
continue;
}
var useConstant = SyntaxFactory.IdentifierName(name);
if (child.HasLeadingTrivia)
{
useConstant = useConstant.WithLeadingTrivia(child.GetLeadingTrivia());
}
if (child.HasTrailingTrivia)
{
useConstant = useConstant.WithTrailingTrivia(child.GetTrailingTrivia());
}
editor.ReplaceNode(child, useConstant);
stats.MagicStringsReplaced++;
}
}
}
private static void MakeAutoPropertyNotifyWhenValueChanges(DocumentEditor editor, PropertyDeclarationSyntax propertyDeclaration, IMethodSymbol invoker, SemanticModel semanticModel, CancellationToken cancellationToken)
{
if (Property.IsMutableAutoProperty(propertyDeclaration, out var getter, out var setter))
{
if (getter.Body != null ||
getter.ContainsSkippedText ||
setter.Body != null ||
setter.ContainsSkippedText)
{
return;
}
var underscoreFields = CodeStyle.UnderscoreFields(semanticModel);
var property = semanticModel.GetDeclaredSymbolSafe(propertyDeclaration, cancellationToken);
var backingField = editor.AddBackingField(propertyDeclaration, underscoreFields, cancellationToken);
var fieldAccess = underscoreFields
? backingField.Name()
: $"this.{backingField.Name()}";
var code = StringBuilderPool.Borrow()
.AppendLine($"public Type PropertyName")
.AppendLine("{")
.AppendLine($" get => {fieldAccess};")
.AppendLine()
.AppendLine(" set")
.AppendLine(" {")
.AppendLine($" if ({Snippet.EqualityCheck(property.Type, "value", fieldAccess, semanticModel)})")
.AppendLine(" {")
.AppendLine($" return;")
.AppendLine(" }")
.AppendLine()
.AppendLine($" {fieldAccess} = value;")
.AppendLine($" {Snippet.OnPropertyChanged(invoker, property.Name, underscoreFields)}")
.AppendLine(" }")
.AppendLine("}")
.Return();
var template = ParseProperty(code);
editor.ReplaceNode(
getter,
x => x.WithExpressionBody(template.Getter().ExpressionBody)
.WithTrailingElasticLineFeed()
.WithAdditionalAnnotations(Formatter.Annotation));
editor.ReplaceNode(
setter,
x => x.WithBody(template.Setter().Body)
.WithSemicolonToken(SyntaxFactory.Token(SyntaxKind.None))
.WithAdditionalAnnotations(Formatter.Annotation));
if (propertyDeclaration.Initializer != null)
{
editor.ReplaceNode(
propertyDeclaration,
x => x.WithoutInitializer());
}
editor.ReplaceNode(propertyDeclaration, x => x.WithAdditionalAnnotations(Formatter.Annotation));
}
}
private static async Task <Solution> InlineAndRemoveMethodAsync(
Document document,
ExpressionStatementSyntax expressionStatement,
MethodDeclarationSyntax methodDeclaration,
StatementSyntax[] statements,
ParameterInfo[] parameterInfos,
CancellationToken cancellationToken = default(CancellationToken))
{
if (expressionStatement.SyntaxTree.Equals(methodDeclaration.SyntaxTree))
{
DocumentEditor editor = await DocumentEditor.CreateAsync(document, cancellationToken).ConfigureAwait(false);
Solution solution = document.Project.Solution;
StatementSyntax[] newStatements = await ReplaceParameterExpressionWithArgumentExpressionAsync(
parameterInfos,
statements,
solution,
cancellationToken).ConfigureAwait(false);
newStatements[0] = newStatements[0].WithLeadingTrivia(expressionStatement.GetLeadingTrivia());
newStatements[statements.Length - 1] = newStatements[statements.Length - 1].WithTrailingTrivia(expressionStatement.GetTrailingTrivia());
if (expressionStatement.Parent.IsKind(SyntaxKind.Block))
{
var block = (BlockSyntax)expressionStatement.Parent;
BlockSyntax newBlock = block.WithStatements(block.Statements.ReplaceRange(expressionStatement, newStatements));
editor.ReplaceNode(block, newBlock);
}
else
{
editor.ReplaceNode(expressionStatement, Block(newStatements));
}
editor.RemoveNode(methodDeclaration);
document = editor.GetChangedDocument();
return(document.Project.Solution);
}
else
{
Solution solution = document.Project.Solution;
document = await InlineMethodAsync(document, expressionStatement, statements, parameterInfos, cancellationToken).ConfigureAwait(false);
DocumentId documentId = solution.GetDocumentId(methodDeclaration.SyntaxTree);
solution = document.Project.Solution;
return(await RemoveMethodAsync(solution.GetDocument(documentId), methodDeclaration, cancellationToken).ConfigureAwait(false));
}
}
private static void FixArgument(DocumentEditor editor, AttributeSyntax attributeSyntax, ITypeSymbol inType, ITypeSymbol outType)
{
editor.ReplaceNode(
attributeSyntax.ArgumentList.Arguments[0],
editor.Generator.AttributeArgument(
editor.Generator.TypeOfExpression(editor.Generator.TypeExpression(inType))));
editor.ReplaceNode(
attributeSyntax.ArgumentList.Arguments[1],
editor.Generator.AttributeArgument(
editor.Generator.TypeOfExpression(editor.Generator.TypeExpression(outType))));
}
private static void MakeAutoPropertySet(DocumentEditor editor, PropertyDeclarationSyntax propertyDeclaration, IMethodSymbol setAndRaise, SemanticModel semanticModel, CancellationToken cancellationToken)
{
var classDeclaration = propertyDeclaration.FirstAncestorOrSelf <ClassDeclarationSyntax>();
if (classDeclaration == null)
{
return;
}
if (Property.IsMutableAutoProperty(propertyDeclaration, out var getter, out var setter))
{
if (getter.Body != null ||
getter.ContainsSkippedText ||
setter.Body != null ||
setter.ContainsSkippedText)
{
return;
}
var underscoreFields = CodeStyle.UnderscoreFields(semanticModel);
var backingField = editor.AddBackingField(propertyDeclaration, underscoreFields, cancellationToken);
var fieldAccess = underscoreFields
? backingField.Name()
: $"this.{backingField.Name()}";
var code = StringBuilderPool.Borrow()
.AppendLine($"public Type PropertyName")
.AppendLine("{")
.AppendLine($" get => {fieldAccess};")
.AppendLine($" set => {(underscoreFields ? string.Empty : "this.")}{setAndRaise.Name}(ref {fieldAccess}, value);")
.AppendLine("}")
.Return();
var template = ParseProperty(code);
editor.ReplaceNode(
getter,
x => x.WithExpressionBody(template.Getter().ExpressionBody)
.WithLeadingLineFeed());
editor.ReplaceNode(
setter,
x => x.WithExpressionBody(template.Setter().ExpressionBody)
.WithLeadingLineFeed()
.WithTrailingLineFeed());
if (propertyDeclaration.Initializer != null)
{
editor.ReplaceNode(
propertyDeclaration,
(node, g) => ((PropertyDeclarationSyntax)node).WithoutInitializer());
}
editor.ReplaceNode(propertyDeclaration, x => x.WithAdditionalAnnotations(Formatter.Annotation));
}
}
internal static void AddOnPropertyChanged(this DocumentEditor editor, BlockSyntax block, ExpressionStatementSyntax onPropertyChangedStatement, int after)
{
_ = editor.ReplaceNode(
block,
x =>
{
if (onPropertyChangedStatement.Expression is InvocationExpressionSyntax onPropertyChanged)
{
for (var i = after; i < x.Statements.Count; i++)
{
var statement = x.Statements[i];
// We can't use the semantic model here as it may not track nodes added before in fixall
switch (statement)
{
case ExpressionStatementSyntax {
Expression: AssignmentExpressionSyntax _
} :
break;
case ExpressionStatementSyntax {
Expression: InvocationExpressionSyntax other
}
when onPropertyChanged.IsEquivalentTo(other) :
return(x);
internal static FieldDeclarationSyntax AddBackingField(this DocumentEditor editor, PropertyDeclarationSyntax propertyDeclaration, bool usesUnderscoreNames, CancellationToken cancellationToken)
{
var property = editor.SemanticModel.GetDeclaredSymbolSafe(propertyDeclaration, cancellationToken);
var name = usesUnderscoreNames
? $"_{property.Name.ToFirstCharLower()}"
: property.Name.ToFirstCharLower();
while (property.ContainingType.MemberNames.Any(x => x == name))
{
name += "_";
}
if (SyntaxFacts.GetKeywordKind(name) != SyntaxKind.None ||
SyntaxFacts.GetContextualKeywordKind(name) != SyntaxKind.None)
{
name = "@" + name;
}
var backingField = (FieldDeclarationSyntax)editor.Generator.FieldDeclaration(
name,
accessibility: Accessibility.Private,
modifiers: DeclarationModifiers.None,
type: propertyDeclaration.Type,
initializer: propertyDeclaration.Initializer?.Value);
var type = (TypeDeclarationSyntax)propertyDeclaration.Parent;
editor.ReplaceNode(
type,
(node, generator) => AddBackingField((TypeDeclarationSyntax)node, backingField, property.Name, generator));
return(backingField);
}
private static void AddUsingToEndOfBlock(DocumentEditor editor, BlockSyntax block, ExpressionSyntax expression)
{
foreach (var statementSyntax in block.Statements)
{
editor.RemoveNode(statementSyntax);
}
editor.ReplaceNode(
block,
SyntaxFactory.Block(
SyntaxFactory.UsingStatement(
declaration: null,
expression: GetExpression(),
statement: block.WithAdditionalAnnotations(Formatter.Annotation))));
ExpressionSyntax GetExpression()
{
if (expression is DeclarationExpressionSyntax declaration &&
declaration.Designation is SingleVariableDesignationSyntax singleVariable)
{
return(SyntaxFactory.IdentifierName(singleVariable.Identifier));
}
return(expression);
}
}
private static void ReplaceWithUsing(DocumentEditor editor, InvocationExpressionSyntax invocation, CancellationToken cancellationToken)
{
if (DisposeCall.TryGetDisposedRootMember(invocation, editor.SemanticModel, cancellationToken, out var root) &&
editor.SemanticModel.TryGetSymbol(root, cancellationToken, out ILocalSymbol local) &&
local.TrySingleDeclaration(cancellationToken, out VariableDeclarationSyntax declaration) &&
invocation.TryFirstAncestor(out ExpressionStatementSyntax expressionStatement) &&
declaration.Parent is LocalDeclarationStatementSyntax localDeclarationStatement)
{
if (expressionStatement.Parent is BlockSyntax finallyBlock &&
finallyBlock.Parent is FinallyClauseSyntax finallyClause &&
finallyClause.Parent is TryStatementSyntax tryStatement &&
!tryStatement.Catches.Any())
{
if (declaration.Variables.TrySingle(out var declarator) &&
declarator.Initializer?.Value.IsKind(SyntaxKind.NullLiteralExpression) == true &&
tryStatement.Block.Statements.TryFirst(out var statement) &&
statement is ExpressionStatementSyntax assignExpressionStatement &&
assignExpressionStatement.Expression is AssignmentExpressionSyntax assignment)
{
editor.ReplaceNode(
tryStatement,
SyntaxFactory.UsingStatement(
SyntaxFactory.VariableDeclaration(
SyntaxFactory.ParseTypeName("var"),
SyntaxFactory.SingletonSeparatedList(
declarator.WithInitializer(SyntaxFactory.EqualsValueClause(assignment.Right)))),
null,
tryStatement.Block.WithStatements(tryStatement.Block.Statements.RemoveAt(0))));
editor.RemoveNode(localDeclarationStatement);
}
public async Task <Solution> InlineAndRemoveMethodAsync(InvocationExpressionSyntax invocation, ExpressionSyntax expression)
{
if (invocation.SyntaxTree == MethodDeclaration.SyntaxTree)
{
DocumentEditor editor = await DocumentEditor.CreateAsync(Document, CancellationToken).ConfigureAwait(false);
ExpressionSyntax newExpression = RewriteExpression(invocation, expression);
editor.ReplaceNode(invocation, newExpression);
editor.RemoveNode(MethodDeclaration);
return(editor.GetChangedDocument().Solution());
}
else
{
Document newDocument = await InlineMethodAsync(invocation, expression).ConfigureAwait(false);
DocumentId documentId = Document.Solution().GetDocumentId(MethodDeclaration.SyntaxTree);
newDocument = await newDocument.Solution().GetDocument(documentId).RemoveMemberAsync(MethodDeclaration, CancellationToken).ConfigureAwait(false);
return(newDocument.Solution());
}
}
private static async Task <Document> SwapArgumentsOrderAsync(Document document, IObjectCreationOperation creation, int paramPosition, int argumentCount, CancellationToken token)
{
DocumentEditor editor = await DocumentEditor.CreateAsync(document, token).ConfigureAwait(false);
SyntaxNode parameter = AddNameOfIfLiteral(creation.Arguments[paramPosition].Value, editor.Generator);
SyntaxNode newCreation;
if (argumentCount == 2)
{
if (paramPosition == 0)
{
newCreation = editor.Generator.ObjectCreationExpression(creation.Type, creation.Arguments[1].Syntax, parameter);
}
else
{
newCreation = editor.Generator.ObjectCreationExpression(creation.Type, parameter, creation.Arguments[0].Syntax);
}
}
else
{
Debug.Assert(argumentCount == 3);
if (paramPosition == 0)
{
newCreation = editor.Generator.ObjectCreationExpression(creation.Type, creation.Arguments[1].Syntax, parameter, creation.Arguments[2].Syntax);
}
else
{
newCreation = editor.Generator.ObjectCreationExpression(creation.Type, parameter, creation.Arguments[1].Syntax, creation.Arguments[0].Syntax);
}
}
editor.ReplaceNode(creation.Syntax, newCreation);
return(editor.GetChangedDocument());
}
public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context)
{
Document doc = context.Document;
CancellationToken cancellationToken = context.CancellationToken;
SyntaxNode root = await doc.GetSyntaxRootAsync(cancellationToken).ConfigureAwait(false);
SemanticModel model = await doc.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
// If we're able to make the desired substitution...
var(targetNode, replacementField) = GetTaskCreationOptionsField(context, root, model, cancellationToken);
if (replacementField != null)
{
// ...then offer it.
string title = MicrosoftNetCoreAnalyzersResources.DoNotCreateTaskCompletionSourceWithWrongArgumentsFix;
context.RegisterCodeFix(
new MyCodeAction(title,
async ct =>
{
// Replace "TaskContinuationOptions.Value" with "TaskCreationOptions.Value"
DocumentEditor editor = await DocumentEditor.CreateAsync(doc, ct).ConfigureAwait(false);
editor.ReplaceNode(targetNode,
editor.Generator.Argument(
editor.Generator.MemberAccessExpression(
editor.Generator.TypeExpressionForStaticMemberAccess(replacementField.ContainingType), replacementField.Name)));
return(editor.GetChangedDocument());
},
equivalenceKey: title),
context.Diagnostics);
}
private static void ApplyFixGU0005(DocumentEditor editor, ArgumentSyntax nameArgument, CancellationToken cancellationToken)
{
var argumentListSyntax = nameArgument.FirstAncestorOrSelf <ArgumentListSyntax>();
var arguments = new ArgumentSyntax[argumentListSyntax.Arguments.Count];
var method = editor.SemanticModel.GetSymbolSafe(argumentListSyntax.Parent, cancellationToken) as IMethodSymbol;
var messageIndex = ParameterIndex(method, "message");
var nameIndex = ParameterIndex(method, "paramName");
for (var i = 0; i < argumentListSyntax.Arguments.Count; i++)
{
if (i == messageIndex)
{
arguments[nameIndex] = argumentListSyntax.Arguments[i];
continue;
}
if (i == nameIndex)
{
arguments[messageIndex] = argumentListSyntax.Arguments[i];
continue;
}
arguments[i] = argumentListSyntax.Arguments[i];
}
var updated = argumentListSyntax.WithArguments(SyntaxFactory.SeparatedList(arguments, argumentListSyntax.Arguments.GetSeparators()));
editor.ReplaceNode(argumentListSyntax, updated);
}
private void VisitExpression(ExpressionSyntax node)
{
var newNode = this.Command.NewExpression
.WithAdditionalAnnotations(new SyntaxAnnotation($"{Id}"));
DocumentEditor.ReplaceNode(node, newNode);
}
public static void UpdateMethodBody(DocumentEditor editor, SyntaxNode syntaxNode, string src)
{
var methodDeclaration = syntaxNode.FirstAncestorOrSelf <MethodDeclarationSyntax>();
var body = (BlockSyntax)SyntaxFactory.ParseStatement(src).WithAdditionalAnnotations(Formatter.Annotation);
editor.ReplaceNode(methodDeclaration.Body, body);
}
private static async Task <Document> ConvertToArrayEmptyAsync(Document document, SyntaxNode nodeToFix, CancellationToken cancellationToken)
{
DocumentEditor editor = await DocumentEditor.CreateAsync(document, cancellationToken).ConfigureAwait(false);
SemanticModel semanticModel = await document.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
SyntaxGenerator generator = editor.Generator;
INamedTypeSymbol?arrayTypeSymbol = semanticModel.Compilation.GetSpecialType(SpecialType.System_Array);
if (arrayTypeSymbol == null)
{
return(document);
}
ITypeSymbol?elementType = GetArrayElementType(nodeToFix, semanticModel, cancellationToken);
if (elementType == null)
{
return(document);
}
SyntaxNode arrayEmptyInvocation = GenerateArrayEmptyInvocation(generator, arrayTypeSymbol, elementType).WithTriviaFrom(nodeToFix);
editor.ReplaceNode(nodeToFix, arrayEmptyInvocation);
return(editor.GetChangedDocument());
}
/// <summary>
/// if a nested type is being moved, this ensures its containing type is partial.
/// </summary>
private void AddPartialModifiersToTypeChain(
DocumentEditor documentEditor, bool removeAttributesAndComments)
{
var semanticFacts = State.SemanticDocument.Document.GetLanguageService <ISemanticFactsService>();
var typeChain = State.TypeNode.Ancestors().OfType <TTypeDeclarationSyntax>();
foreach (var node in typeChain)
{
var symbol = (ITypeSymbol)State.SemanticDocument.SemanticModel.GetDeclaredSymbol(node, CancellationToken);
if (!semanticFacts.IsPartial(symbol, CancellationToken))
{
documentEditor.SetModifiers(node,
documentEditor.Generator.GetModifiers(node) | DeclarationModifiers.Partial);
}
if (removeAttributesAndComments)
{
documentEditor.RemoveAllAttributes(node);
documentEditor.RemoveAllComments(node);
}
}
documentEditor.ReplaceNode(State.TypeNode,
(currentNode, generator) =>
{
var currentTypeNode = (TTypeDeclarationSyntax)currentNode;
// Trim leading whitespace from the type so we don't have excessive
// leading blank lines.
return(RemoveLeadingWhitespace(currentTypeNode));
});
}
public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context)
{
Document doc = context.Document;
CancellationToken cancellationToken = context.CancellationToken;
SyntaxNode root = await doc.GetSyntaxRootAsync(cancellationToken).ConfigureAwait(false);
if (root.FindNode(context.Span) is SyntaxNode expression)
{
string title = MicrosoftNetCoreAnalyzersResources.PreferTypedStringBuilderAppendOverloadsRemoveToString;
context.RegisterCodeFix(
new MyCodeAction(title,
async ct =>
{
SemanticModel model = await doc.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
if (model.GetOperationWalkingUpParentChain(expression, cancellationToken) is IArgumentOperation arg &&
arg.Value is IInvocationOperation invoke &&
invoke.Instance?.Syntax is SyntaxNode replacement)
{
DocumentEditor editor = await DocumentEditor.CreateAsync(doc, ct).ConfigureAwait(false);
editor.ReplaceNode(expression, editor.Generator.Argument(replacement));
return(editor.GetChangedDocument());
}
return(doc);
},
equivalenceKey: title),
context.Diagnostics);
}
}
private async Task <Document> ConvertToStringLengthComparison(CodeFixContext context, FixResolution fixResolution)
{
DocumentEditor editor = await DocumentEditor.CreateAsync(context.Document, context.CancellationToken).ConfigureAwait(false);
SyntaxNode leftOperand = GetLeftOperand(fixResolution.BinaryExpressionSyntax);
SyntaxNode rightOperand = GetRightOperand(fixResolution.BinaryExpressionSyntax);
// Take the below example:
// if (f == String.Empty) ...
// The comparison operand, f, will now become 'f.Length' and a the other operand will become '0'
SyntaxNode zeroLengthSyntax = editor.Generator.LiteralExpression(0);
if (leftOperand == fixResolution.ComparisonOperand)
{
leftOperand = editor.Generator.MemberAccessExpression(leftOperand, "Length");
rightOperand = zeroLengthSyntax.WithTriviaFrom(rightOperand);
}
else
{
leftOperand = zeroLengthSyntax;
rightOperand = editor.Generator.MemberAccessExpression(rightOperand.WithoutTrivia(), "Length");
}
SyntaxNode replacementSyntax = fixResolution.UsesEqualsOperator ?
editor.Generator.ValueEqualsExpression(leftOperand, rightOperand) :
editor.Generator.ValueNotEqualsExpression(leftOperand, rightOperand);
SyntaxNode replacementAnnotatedSyntax = replacementSyntax.WithAdditionalAnnotations(Formatter.Annotation);
editor.ReplaceNode(fixResolution.BinaryExpressionSyntax, replacementAnnotatedSyntax);
return(editor.GetChangedDocument());
}
protected override async Task <SyntaxNode> FixAllInDocumentAsync(FixAllContext fixAllContext, Document document)
{
var diagnostics = await fixAllContext.GetDocumentDiagnosticsAsync(document).ConfigureAwait(false);
if (diagnostics.IsEmpty)
{
return(null);
}
DocumentEditor editor = await DocumentEditor.CreateAsync(document, fixAllContext.CancellationToken).ConfigureAwait(false);
SyntaxNode root = editor.GetChangedRoot();
ImmutableList <SyntaxNode> nodesToChange = ImmutableList.Create <SyntaxNode>();
// Make sure all nodes we care about are tracked
foreach (var diagnostic in diagnostics)
{
var location = diagnostic.Location;
var syntaxNode = root.FindNode(location.SourceSpan);
if (syntaxNode != null)
{
editor.TrackNode(syntaxNode);
nodesToChange = nodesToChange.Add(syntaxNode);
}
}
foreach (var node in nodesToChange)
{
editor.ReplaceNode(node, node.WithLeadingTrivia(SyntaxFactory.ElasticCarriageReturnLineFeed));
}
return(editor.GetChangedRoot());
}
public virtual async Task <Solution> InlineAndRemoveAsync(
SyntaxNode node,
ExpressionSyntax expression,
CancellationToken cancellationToken = default(CancellationToken))
{
if (node.SyntaxTree == Declaration.SyntaxTree)
{
DocumentEditor editor = await DocumentEditor.CreateAsync(Document, cancellationToken).ConfigureAwait(false);
ExpressionSyntax newExpression = RewriteExpression(node, expression);
editor.ReplaceNode(node, newExpression);
editor.RemoveNode(Declaration);
return(editor.GetChangedDocument().Solution());
}
else
{
Document newDocument = await InlineAsync(node, expression, cancellationToken).ConfigureAwait(false);
DocumentId documentId = Document.Solution().GetDocumentId(Declaration.SyntaxTree);
newDocument = await newDocument.Solution().GetDocument(documentId).RemoveMemberAsync(Declaration, cancellationToken).ConfigureAwait(false);
return(newDocument.Solution());
}
}
public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context)
{
Document doc = context.Document;
SemanticModel model = await doc.GetSemanticModelAsync(context.CancellationToken).ConfigureAwait(false);
SyntaxNode root = await doc.GetSyntaxRootAsync(context.CancellationToken).ConfigureAwait(false);
if (root.FindNode(context.Span, getInnermostNodeForTie: true) is SyntaxNode node &&
model.Compilation.TryGetOrCreateTypeByMetadataName(WellKnownTypeNames.SystemEnvironment, out var environmentType) &&
model.GetOperation(node, context.CancellationToken) is IPropertyReferenceOperation operation)
{
string title = MicrosoftNetCoreAnalyzersResources.UseEnvironmentProcessIdFix;
context.RegisterCodeFix(
new MyCodeAction(title,
async cancellationToken =>
{
DocumentEditor editor = await DocumentEditor.CreateAsync(doc, cancellationToken).ConfigureAwait(false);
var replacement = editor.Generator.MemberAccessExpression(editor.Generator.TypeExpressionForStaticMemberAccess(environmentType), "ProcessId");
editor.ReplaceNode(node, replacement.WithTriviaFrom(node));
return(editor.GetChangedDocument());
},
equivalenceKey: title),
context.Diagnostics);
}
}
private static async Task <Document> ImplementIDisposable(Document document, SyntaxNode declaration, CancellationToken cancellationToken)
{
DocumentEditor editor = await DocumentEditor.CreateAsync(document, cancellationToken).ConfigureAwait(false);
SyntaxGenerator generator = editor.Generator;
SemanticModel model = editor.SemanticModel;
// Add the interface to the baselist.
SyntaxNode interfaceType = generator.TypeExpression(WellKnownTypes.IDisposable(model.Compilation));
editor.AddInterfaceType(declaration, interfaceType);
// Find a Dispose method. If one exists make that implement IDisposable, else generate a new method.
var typeSymbol = model.GetDeclaredSymbol(declaration) as INamedTypeSymbol;
IMethodSymbol disposeMethod = (typeSymbol?.GetMembers("Dispose"))?.OfType <IMethodSymbol>()?.Where(m => m.Parameters.Length == 0).FirstOrDefault();
if (disposeMethod != null && disposeMethod.DeclaringSyntaxReferences.Length == 1)
{
SyntaxNode memberPartNode = await disposeMethod.DeclaringSyntaxReferences.Single().GetSyntaxAsync(cancellationToken).ConfigureAwait(false);
memberPartNode = generator.GetDeclaration(memberPartNode);
editor.ReplaceNode(memberPartNode, generator.AsPublicInterfaceImplementation(memberPartNode, interfaceType));
}
else
{
SyntaxNode throwStatement = generator.ThrowStatement(generator.ObjectCreationExpression(WellKnownTypes.NotImplementedException(model.Compilation)));
SyntaxNode member = generator.MethodDeclaration(TypesThatOwnDisposableFieldsShouldBeDisposableAnalyzer <SyntaxNode> .Dispose, statements: new[] { throwStatement });
member = generator.AsPublicInterfaceImplementation(member, interfaceType);
editor.AddMember(declaration, member);
}
return(editor.GetChangedDocument());
}
public static void UpdateMethodBody(DocumentEditor editor, SyntaxNode syntaxNode, string src)
{
var methodBlock = syntaxNode.FirstAncestorOrSelf <MethodBlockSyntax>();
var statements = new SyntaxList <StatementSyntax>().AddRange(GetStatements(src));
editor.ReplaceNode(methodBlock, methodBlock.WithStatements(statements));
}