public override SyntaxNode VisitObjectCreationExpression(ObjectCreationExpressionSyntax node)
{
if (node.FirstAncestorOrSelf <PropertyDeclarationSyntax>() != null &&
node.FirstAncestorOrSelf <PropertyDeclarationSyntax>().Identifier.Text == "SelectorExpression")
{
var customExpressions = node.Initializer.Expressions
.Where(p => this._finder.IsNodeWithinCustomCode(p))
.Select(p => p.WithoutTrivia())
.ToList();
var nodeTokenList = SyntaxFactory.NodeOrTokenList();
foreach (var existingExp in customExpressions)
{
nodeTokenList = nodeTokenList.Add(existingExp);
nodeTokenList = nodeTokenList.Add(SyntaxFactory.Token(SyntaxKind.CommaToken).AppendNewLine());
}
var res = node.WithInitializer(node.Initializer
.WithCloseBraceToken(SyntaxFactory.Token(SyntaxKind.CloseBraceToken))
.WithExpressions(SyntaxFactory.SeparatedList <ExpressionSyntax>(nodeTokenList)));
return(res);
}
return(node);
}
private static ISymbol GetAssignedVariableSymbol(ObjectCreationExpressionSyntax objectCreation, SemanticModel semanticModel)
{
var variable = objectCreation.FirstAncestorOrSelf <AssignmentExpressionSyntax>()?.Left;
if (variable != null)
{
return(semanticModel.GetSymbolInfo(variable).Symbol);
}
var identifier = objectCreation.FirstAncestorOrSelf <VariableDeclaratorSyntax>();
return(identifier != null
? semanticModel.GetDeclaredSymbol(identifier)
: null);
}
private bool IsLaterAssignedWithAllowedValue(ObjectCreationExpressionSyntax objectCreation, SemanticModel semanticModel)
{
var statement = objectCreation.FirstAncestorOrSelf <StatementSyntax>();
if (statement == null)
{
return(false);
}
var variableSymbol = GetAssignedVariableSymbol(objectCreation, semanticModel);
var nextStatements = GetNextStatements(statement);
var innerStatements = GetInnerStatements(statement);
return(variableSymbol != null &&
nextStatements.Union(innerStatements)
.OfType <ExpressionStatementSyntax>()
.Select(x => x.Expression)
.OfType <AssignmentExpressionSyntax>()
.Any(TrackedPropertySetWithAllowedValue));
bool TrackedPropertySetWithAllowedValue(AssignmentExpressionSyntax assignment) =>
variableSymbol.Equals(GetAssignedVariableSymbol(assignment, semanticModel)) &&
IsTrackedPropertyName(assignment.Left) &&
IsAllowedValue(assignment.Right, semanticModel);
}
internal static bool TryGetDependencyProperty(ObjectCreationExpressionSyntax objectCreation, SemanticModel semanticModel, CancellationToken cancellationToken, out IFieldSymbol dependencyProperty)
{
dependencyProperty = null;
var declarator = objectCreation.FirstAncestorOrSelf <VariableDeclaratorSyntax>();
if (declarator == null)
{
return(false);
}
dependencyProperty = semanticModel.GetDeclaredSymbolSafe(declarator, cancellationToken) as IFieldSymbol;
return(dependencyProperty != null);
}
private static List <Param> GetSqlParams(
SyntaxNodeAnalysisContext context,
ObjectCreationExpressionSyntax node,
IEnumerable <SyntaxNode> siblings)
{
var parameters = new List <Param>();
var variableDeclarator = node.FirstAncestorOrSelf <VariableDeclaratorSyntax>();
if (variableDeclarator is null)
{
return(parameters);
}
var variableSymbol = context.SemanticModel.GetDeclaredSymbol(variableDeclarator);
foreach (var sibling in siblings)
{
// command.Parameters.AddWithValue
if (sibling is InvocationExpressionSyntax invocation &&
invocation.Expression is MemberAccessExpressionSyntax addWithValue &&
addWithValue.Name.ToString() == "AddWithValue" &&
addWithValue.Expression is MemberAccessExpressionSyntax paramsExpr &&
paramsExpr.Name.ToString() == "Parameters" &&
paramsExpr.Expression is IdentifierNameSyntax command &&
context.SemanticModel.GetSymbolInfo(command).Symbol == variableSymbol)
{
var paramNameExpression = invocation.ArgumentList.Arguments[0].Expression;
var valueExpression = invocation.ArgumentList.Arguments[1].Expression;
var paramName = paramNameExpression.GetConstantValue(context.Compilation);
if (paramName.StartsWith("@") && paramName.Length >= 2)
{
paramName = paramName.Substring(1);
}
parameters.Add(new Param
{
Name = paramName,
Location = invocation.GetLocation(),
Value = valueExpression.GetDummyValue(context.SemanticModel)
});
}
}
return(parameters);
}
public static bool IsPartOfStaticMemberDeclaration(this ObjectCreationExpressionSyntax objectCreationExprSyntax)
{
var memberForObjectCreationExpr = objectCreationExprSyntax.FirstAncestorOrSelf <MemberDeclarationSyntax>();
switch (memberForObjectCreationExpr.Kind())
{
case SyntaxKind.ConstructorDeclaration:
var constructorDeclaration = (ConstructorDeclarationSyntax)memberForObjectCreationExpr;
return(constructorDeclaration.Modifiers.Any(SyntaxKind.StaticKeyword));
case SyntaxKind.FieldDeclaration:
var fieldDeclaration = (FieldDeclarationSyntax)memberForObjectCreationExpr;
return(fieldDeclaration.Modifiers.Any(SyntaxKind.StaticKeyword));
}
return(false);
}
internal static bool TryGetDependencyProperty(ObjectCreationExpressionSyntax objectCreation, SemanticModel semanticModel, CancellationToken cancellationToken, out BackingFieldOrProperty fieldOrProperty)
{
fieldOrProperty = default;
var invocation = objectCreation.FirstAncestorOrSelf <InvocationExpressionSyntax>();
if (invocation == null)
{
return(false);
}
if (DependencyProperty.TryGetRegisterCall(invocation, semanticModel, cancellationToken, out _) ||
DependencyProperty.TryGetRegisterReadOnlyCall(invocation, semanticModel, cancellationToken, out _) ||
DependencyProperty.TryGetRegisterAttachedCall(invocation, semanticModel, cancellationToken, out _) ||
DependencyProperty.TryGetRegisterAttachedReadOnlyCall(invocation, semanticModel, cancellationToken, out _))
{
if (objectCreation.TryFirstAncestor <FieldDeclarationSyntax>(out var fieldDeclaration) &&
semanticModel.TryGetSymbol(fieldDeclaration, cancellationToken, out var field))
{
return(BackingFieldOrProperty.TryCreateForDependencyProperty(field, out fieldOrProperty));
}
if (objectCreation.TryFirstAncestor <PropertyDeclarationSyntax>(out var propertyDeclaration) &&
semanticModel.TryGetSymbol(propertyDeclaration, cancellationToken, out var property))
{
return(BackingFieldOrProperty.TryCreateForDependencyProperty(property, out fieldOrProperty));
}
return(false);
}
if (invocation.Expression is MemberAccessExpressionSyntax memberAccess &&
(DependencyProperty.TryGetAddOwnerCall(invocation, semanticModel, cancellationToken, out _) ||
DependencyProperty.TryGetOverrideMetadataCall(invocation, semanticModel, cancellationToken, out _)) &&
semanticModel.TryGetSymbol(memberAccess.Expression, cancellationToken, out ISymbol? candidate))
{
return(BackingFieldOrProperty.TryCreateForDependencyProperty(candidate, out fieldOrProperty));
}
return(false);
}
public override SyntaxNode VisitObjectCreationExpression(ObjectCreationExpressionSyntax node)
{
if (((CSharpCompilation)semanticModel.Compilation).LanguageVersion.MapSpecifiedToEffectiveVersion() != LanguageVersion.CSharp9)
{
return(base.VisitObjectCreationExpression(node));
}
if (node.NewKeyword == null ||
node.Parent.IsKind(SyntaxKind.LocalDeclarationStatement) ||
node.Parent.IsKind(SyntaxKind.SimpleMemberAccessExpression) ||
node.Parent.IsKind(SyntaxKind.UsingStatement))
{
return(base.VisitObjectCreationExpression(node));
}
//if (node.Parent.IsKind(SyntaxKind.LocalDeclarationStatement))
// return base.VisitObjectCreationExpression(node);
//if (node.Parent.IsKind(SyntaxKind.SimpleMemberAccessExpression))
// return base.VisitObjectCreationExpression(node);
//if (node.Parent.IsKind(SyntaxKind.UsingStatement))
// return base.VisitObjectCreationExpression(node);
var newNode = node.WithType(SyntaxFactory.ParseTypeName(""))
.WithNewKeyword(node.NewKeyword.WithoutWhiteSpaceTrivia())
.WithArgumentList(node.ArgumentList ?? SyntaxFactory.ParseArgumentList("()"));
var nodeTypeinfo = semanticModel.GetTypeInfo(node);
var parentSymbol = semanticModel.GetSymbolInfo(node.Parent).Symbol;
if (parentSymbol?.Kind == SymbolKind.Method &&
(parentSymbol as IMethodSymbol)?.MethodKind == MethodKind.AnonymousFunction)
{
return(base.VisitObjectCreationExpression(node));
}
if (node.Parent.IsKind(SyntaxKind.ReturnStatement))
{
var methodDeclaration = node.FirstAncestorOrSelf <MethodDeclarationSyntax>();
var propertyDeclaration = node.FirstAncestorOrSelf <PropertyDeclarationSyntax>();
if (methodDeclaration != null)
{
if (methodDeclaration.ReturnType.ToString() != nodeTypeinfo.Type.Name)
{
return(base.VisitObjectCreationExpression(node));
}
var symbol = semanticModel.GetDeclaredSymbol(methodDeclaration);
if (symbol.ReturnType.TypeKind != TypeKind.Class)
{
return(base.VisitObjectCreationExpression(node));
}
}
else if (propertyDeclaration != null)
{
var symbol = semanticModel.GetDeclaredSymbol(propertyDeclaration);
if (symbol.GetMethod.ReturnType.TypeKind != TypeKind.Class)
{
return(base.VisitObjectCreationExpression(node));
}
}
}
else if (node.Parent.IsKind(SyntaxKind.Argument))
{
var methodInvocation = node.FirstAncestorOrSelf <InvocationExpressionSyntax>();
if (methodInvocation != null)
{
var methodSymbol = semanticModel.GetSymbolInfo(methodInvocation).Symbol;
var countofMethod = methodSymbol?.ContainingType?.GetMembers()
.Count(x => x.Name ==
(methodInvocation.Expression.IsKind(SyntaxKind.SimpleMemberAccessExpression) ?
methodInvocation.GetRightSideNameSyntax().ToString() :
methodInvocation.Expression.ToString()));
if (countofMethod > 1)
{
return(base.VisitObjectCreationExpression(node));
}
var indexOfMethod = node.FirstAncestorOrSelf <ArgumentListSyntax>().Arguments
.IndexOf(node.AncestorsAndSelf().FirstOrDefault(x => x.Parent.IsKind(SyntaxKind.ArgumentList)) as ArgumentSyntax);
if ((methodSymbol as IMethodSymbol)?.OriginalDefinition.Parameters[indexOfMethod].IsParams == true)
{
return(base.VisitObjectCreationExpression(node));
}
if ((methodSymbol as IMethodSymbol)?.OriginalDefinition.IsGenericMethod == true &&
(methodInvocation.Expression.IsKind(SyntaxKind.SimpleMemberAccessExpression) ?
!methodInvocation.GetRightSideNameSyntax().IsKind(SyntaxKind.GenericName) :
!methodInvocation.Expression.IsKind(SyntaxKind.GenericName)))
{
return(base.VisitObjectCreationExpression(node));
}
}
else
{
return(base.VisitObjectCreationExpression(node));
}
}
else if (node.Parent.IsKind(SyntaxKind.ArrayInitializerExpression))
{
if (node.Parent.Parent.IsKind(SyntaxKind.ImplicitArrayCreationExpression))
{
return(base.VisitObjectCreationExpression(node));
}
}
if (nodeTypeinfo.ConvertedType.ToString() == nodeTypeinfo.Type.ToString())
{
if (isReportOnlyMode)
{
var lineSpan = node.GetFileLinePosSpan();
AddReport(new ChangesReport(node)
{
LineNumber = lineSpan.StartLinePosition.Line,
Column = lineSpan.StartLinePosition.Character,
Message = "Object Creation new Syntax in c# v9",
Generator = nameof(CSharpSyntaxUpgrade)
});
}
return(newNode);
}
return(base.VisitObjectCreationExpression(node));
}
internal static bool TryGetRegisteredName(ObjectCreationExpressionSyntax objectCreation, SemanticModel semanticModel, CancellationToken cancellationToken, out string registeredName)
{
registeredName = null;
return(TryGetConstructor(objectCreation, semanticModel, cancellationToken, out _) &&
DependencyProperty.TryGetRegisteredName(objectCreation?.FirstAncestorOrSelf <InvocationExpressionSyntax>(), semanticModel, cancellationToken, out registeredName));
}