public override void ReportSuppressions(SuppressionAnalysisContext context)
{
var suppressAll = IsMarkedWithAttribute(context.Compilation.Assembly, "SmartAnalyzers.CSharpExtensions.Annotations.InitRequiredForNotNullAttribute");
foreach (var diagnostic in context.ReportedDiagnostics)
{
if (suppressAll)
{
context.ReportSuppression(Suppression.Create(SuppressionDescriptor, diagnostic));
continue;
}
var root = diagnostic.Location.SourceTree.GetRoot().FindNode(diagnostic.Location.SourceSpan);
if (root is MemberDeclarationSyntax memberDeclaration)
{
if (HasAttributeWithInitGuarantee(memberDeclaration.AttributeLists))
{
context.ReportSuppression(Suppression.Create(SuppressionDescriptor, diagnostic));
}
else
{
var typeDeclaration = SyntaxHelper.FindNearestContainer <TypeDeclarationSyntax>(memberDeclaration);
if (typeDeclaration != null && HasAttributeWithInitGuarantee(typeDeclaration.AttributeLists))
{
context.ReportSuppression(Suppression.Create(SuppressionDescriptor, diagnostic));
}
}
}
}
}
private void AnalyzeDiagnostic(Diagnostic diagnostic, SuppressionAnalysisContext context)
{
var fieldDeclarationSyntax = context.GetSuppressibleNode <VariableDeclaratorSyntax>(diagnostic);
if (fieldDeclarationSyntax == null)
{
return;
}
var model = context.GetSemanticModel(diagnostic.Location.SourceTree);
if (!(model.GetDeclaredSymbol(fieldDeclarationSyntax) is IFieldSymbol fieldSymbol))
{
return;
}
if (!IsSuppressable(fieldSymbol))
{
return;
}
foreach (var descriptor in SupportedSuppressions.Where(d => d.SuppressedDiagnosticId == diagnostic.Id))
{
context.ReportSuppression(Suppression.Create(descriptor, diagnostic));
}
}
private void AnalyzeDiagnostic(Diagnostic diagnostic, SuppressionAnalysisContext context)
{
var node = diagnostic.Location.SourceTree.GetRoot(context.CancellationToken).FindNode(diagnostic.Location.SourceSpan);
if (node == null)
{
return;
}
var model = context.GetSemanticModel(diagnostic.Location.SourceTree);
if (!(model.GetDeclaredSymbol(node) is IFieldSymbol fieldSymbol))
{
return;
}
if (!fieldSymbol.GetAttributes().Any(a => a.AttributeClass.Matches(typeof(UnityEngine.SerializeField)) || a.AttributeClass.Matches(typeof(UnityEngine.SerializeReference))))
{
return;
}
foreach (var descriptor in SupportedSuppressions.Where(d => d.SuppressedDiagnosticId == diagnostic.Id))
{
context.ReportSuppression(Suppression.Create(descriptor, diagnostic));
}
}
public override void ReportSuppressions(SuppressionAnalysisContext context)
{
foreach (var diagnostic in context.ReportedDiagnostics)
{
var node = diagnostic.Location.SourceTree.GetRoot(context.CancellationToken).FindNode(diagnostic.Location.SourceSpan);
if (node == null)
{
continue;
}
if (!(node is ParameterSyntax parameter))
{
continue;
}
// cheapest checks first
if (!(parameter.Type is NameSyntax))
{
return;
}
if (context.GetSemanticModel(node.SyntaxTree).GetTypeInfo(parameter.Type).Type.IsCancellationToken())
{
context.ReportSuppression(SuppressionDescriptors.CancellationTokenParameterUnused, diagnostic);
}
}
}
public override void ReportSuppressions(SuppressionAnalysisContext context)
{
if (context.Compilation.GetOrCreateTypeByMetadataName(WellKnownTypeNames.XunitFactAttribute) is not {
} factAttribute)
{
return;
}
var knownTestAttributes = new ConcurrentDictionary <INamedTypeSymbol, bool>();
foreach (var diagnostic in context.ReportedDiagnostics)
{
// The diagnostic is reported on the test method
if (diagnostic.Location.SourceTree is not {
} tree)
{
continue;
}
var root = tree.GetRoot(context.CancellationToken);
var node = root.FindNode(diagnostic.Location.SourceSpan, getInnermostNodeForTie: true);
var semanticModel = context.GetSemanticModel(tree);
var declaredSymbol = semanticModel.GetDeclaredSymbol(node, context.CancellationToken);
if (declaredSymbol is IMethodSymbol method &&
method.IsXUnitTestMethod(knownTestAttributes, factAttribute))
{
context.ReportSuppression(Suppression.Create(Rule, diagnostic));
}
}
}
public override void ReportSuppressions(SuppressionAnalysisContext context)
{
foreach (Diagnostic diagnostic in context.ReportedDiagnostics)
{
context.ReportSuppression(Suppression.Create(SupportedSuppressions[0], diagnostic));
}
}
public override void ReportSuppressions(SuppressionAnalysisContext context)
{
foreach (var diagnostic in context.ReportedDiagnostics)
{
SyntaxNode?node = diagnostic.Location.SourceTree?.GetRoot(context.CancellationToken)
.FindNode(diagnostic.Location.SourceSpan);
if (node is null)
{
continue;
}
string fieldName = node.ToString();
var classDeclaration = node.Ancestors().OfType <ClassDeclarationSyntax>().First();
var methods = classDeclaration.Members.OfType <MethodDeclarationSyntax>().ToArray();
foreach (var method in methods)
{
var allAttributes = method.AttributeLists.SelectMany(list => list.Attributes.Select(a => a.Name.ToString()))
.ToImmutableHashSet();
if (allAttributes.Contains("SetUp") || allAttributes.Contains("OneTimeSetUp"))
{
// Find (OneTime)SetUps method and check for assignment to this field.
if (FieldIsAssignedIn(method, fieldName))
{
context.ReportSuppression(Suppression.Create(NullableFieldInitializedInSetUp, diagnostic));
}
}
}
}
}
private void AnalyzeDiagnostic(Diagnostic diagnostic, SuppressionAnalysisContext context)
{
var node = diagnostic.Location.SourceTree.GetRoot(context.CancellationToken).FindNode(diagnostic.Location.SourceSpan);
if (node == null)
{
return;
}
var model = context.GetSemanticModel(diagnostic.Location.SourceTree);
if (!(model.GetDeclaredSymbol(node) is IFieldSymbol fieldSymbol))
{
return;
}
if (!IsSuppressable(fieldSymbol))
{
return;
}
foreach (var descriptor in SupportedSuppressions.Where(d => d.SuppressedDiagnosticId == diagnostic.Id))
{
context.ReportSuppression(Suppression.Create(descriptor, diagnostic));
}
}
public override void ReportSuppressions(SuppressionAnalysisContext context)
{
var implAttr = context.Compilation.GetTypeByMetadataName(MeansImplicitAssignmentAttribute);
foreach (var reportedDiagnostic in context.ReportedDiagnostics)
{
if (reportedDiagnostic.Id != Diagnostics.MeansImplicitAssignment.SuppressedDiagnosticId)
{
continue;
}
var node = reportedDiagnostic.Location.SourceTree?.GetRoot(context.CancellationToken).FindNode(reportedDiagnostic.Location.SourceSpan);
if (node == null)
{
continue;
}
var symbol = context.GetSemanticModel(reportedDiagnostic.Location.SourceTree).GetDeclaredSymbol(node);
if (symbol == null || !symbol.GetAttributes().Any(a =>
a.AttributeClass?.GetAttributes().Any(attr =>
SymbolEqualityComparer.Default.Equals(attr.AttributeClass, implAttr)) == true))
{
continue;
}
context.ReportSuppression(Suppression.Create(
Diagnostics.MeansImplicitAssignment,
reportedDiagnostic));
}
}
private static void AnalyzeBinaryExpression(Diagnostic diagnostic, SuppressionAnalysisContext context, BinaryExpressionSyntax binaryExpression)
{
switch (binaryExpression.Kind())
{
case SyntaxKind.EqualsExpression:
case SyntaxKind.NotEqualsExpression:
break;
default:
return;
}
if (!binaryExpression.Right.IsKind(SyntaxKind.NullLiteralExpression))
{
return;
}
var model = context.GetSemanticModel(binaryExpression.SyntaxTree);
if (model == null)
{
return;
}
var type = model.GetTypeInfo(binaryExpression.Left);
if (type.Type == null)
{
return;
}
if (!type.Type.Extends(typeof(UnityEngine.Object)))
{
return;
}
if (diagnostic.Id == NullCoalescingRule.SuppressedDiagnosticId)
{
context.ReportSuppression(Suppression.Create(NullCoalescingRule, diagnostic));
}
else if (diagnostic.Id == NullPropagationRule.SuppressedDiagnosticId)
{
context.ReportSuppression(Suppression.Create(NullPropagationRule, diagnostic));
}
}
private static void AnalyzeFields(VariableDeclaratorSyntax declarator, Diagnostic diagnostic, SuppressionAnalysisContext context, SyntaxNode root)
{
var declarationSyntax = declarator.FirstAncestorOrSelf <FieldDeclarationSyntax>();
//suppress for fields that are not private and not static => statics cannot be set in editor and are not shown in the inspector and cannot be set there
if (!declarationSyntax.Modifiers.Any(modifier => modifier.IsKind(SyntaxKind.PrivateKeyword) || modifier.IsKind(SyntaxKind.StaticKeyword)) &&
!declarationSyntax.AttributeLists.Any(attributeList => attributeList.Attributes.Any(attribute => attribute.Name.ToString() == nameof(UnityEngine.HideInInspector))))
{
context.ReportSuppression(Suppression.Create(Rule, diagnostic));
return;
}
//check for serializefield attribute => variable could be set in editor
if (declarationSyntax.AttributeLists.Any(attributeList => attributeList.Attributes.Any(attribute => attribute.Name.ToString() == nameof(UnityEngine.SerializeField))))
{
context.ReportSuppression(Suppression.Create(Rule, diagnostic));
return;
}
var symbol = GetSymbol(diagnostic.Location.SourceTree, declarationSyntax.Declaration.Type, context);
if (!symbol.Extends(typeof(UnityEngine.Object)))
{
return;
}
var methodBodies = MethodBodies(root)
.ToList();
//check for valid assignments
if (IsAssignedTo(declarator.Identifier.Text, methodBodies))
{
context.ReportSuppression(Suppression.Create(Rule, diagnostic));
return;
}
//check for existence of this variable in any assigned property
foreach (string variable in AssignedProperties(root, methodBodies))
{
if (variable == declarator.Identifier.Text)
{
context.ReportSuppression(Suppression.Create(Rule, diagnostic));
}
}
}
private void AnalyzeDiagnostic(Diagnostic diagnostic, SuppressionAnalysisContext context)
{
var location = diagnostic.Location;
var sourceTree = location.SourceTree;
var root = sourceTree.GetRoot(context.CancellationToken);
var node = root.FindNode(location.SourceSpan);
var model = context.GetSemanticModel(location.SourceTree);
var symbols = new List <ISymbol>();
switch (node)
{
case MethodDeclarationSyntax method:
symbols.Add(model.GetDeclaredSymbol(method));
break;
case VariableDeclaratorSyntax vdec:
symbols.Add(model.GetDeclaredSymbol(vdec));
break;
case FieldDeclarationSyntax fdec:
symbols.AddRange(fdec.Declaration.Variables.Select(v => model.GetDeclaredSymbol(v)));
break;
}
var reportableSymbols = symbols
.Where(IsReportable)
.ToList();
if (!reportableSymbols.Any())
{
return;
}
if (reportableSymbols.FirstOrDefault() is IMethodSymbol)
{
context.ReportSuppression(Suppression.Create(ContextMenuRule, diagnostic));
}
else
{
foreach (var descriptor in SupportedSuppressions.Where(d => d.SuppressedDiagnosticId == diagnostic.Id))
{
context.ReportSuppression(Suppression.Create(descriptor, diagnostic));
}
}
}
public override void ReportSuppressions(SuppressionAnalysisContext context)
{
foreach (var diagnostic in context.ReportedDiagnostics)
{
if (diagnostic.GetMessage(CultureInfo.InvariantCulture) is { } message&&
IsOut(message))
{
context.ReportSuppression(Suppression.Create(Descriptor, diagnostic));
}
public override void ReportSuppressions(SuppressionAnalysisContext context)
{
foreach (Diagnostic diagnostic in context.ReportedDiagnostics)
{
if (diagnostic.GetMessage().Contains("TestStruct.X")) // Filtering on the message is gross and terrible. Don't actually do this in a real suppressor.
{
context.ReportSuppression(Suppression.Create(SupportedSuppressions[0], diagnostic));
}
}
}
private static void AnalyzeDiagnostic(Diagnostic diagnostic, SuppressionAnalysisContext context)
{
var model = context.GetSemanticModel(diagnostic.Location.SourceTree);
var methodDeclarationSyntax = context.GetSuppressibleNode <MethodDeclarationSyntax>(diagnostic);
// Reuse the same detection logic regarding decorated methods with *InitializeOnLoadMethodAttribute
if (InitializeOnLoadMethodAnalyzer.MethodMatches(methodDeclarationSyntax, model, out _, out _))
{
context.ReportSuppression(Suppression.Create(Rule, diagnostic));
}
}
private void AnalyzeDiagnostic(Diagnostic diagnostic, SuppressionAnalysisContext context)
{
try
{
var node = diagnostic.Location.SourceTree.GetRoot(context.CancellationToken).FindNode(diagnostic.Location.SourceSpan);
if (node is PropertyDeclarationSyntax prop)
{
if (!ContainsMustInitialize(prop, context, prop.Identifier.ValueText))
{
return;
}
}
else if ((node.Parent.Parent) is FieldDeclarationSyntax f)
{
if (!ContainsMustInitialize(f, context, (node as VariableDeclaratorSyntax).Identifier.Text))
{
return;
}
}
else if (node is ConstructorDeclarationSyntax)
{
var regex = new Regex(@"(\S*)\s*'(.*)'");
var match = regex.Match(diagnostic.GetMessage());
var type = match.Groups[1].Value;
var name = match.Groups[2].Value;
if (type == "field")
{
var fieldDecl = node.Parent.DescendantNodes().OfType <FieldDeclarationSyntax>().First(n => n.Declaration.Variables.Any(v => v.Identifier.ValueText == name));
if (!ContainsMustInitialize(fieldDecl, context, name))
{
return;
}
}
else
{
var propDecl = node.Parent.DescendantNodes().OfType <PropertyDeclarationSyntax>().First(p => p.Identifier.ValueText == name);
if (!ContainsMustInitialize(propDecl, context, name))
{
return;
}
}
}
context.ReportSuppression(Suppression.Create(MustInitializeRule, diagnostic));
}
catch (Exception ex)
{
Logger.LogError(ex);
throw;
}
}
private static void AnalyzeDiagnostic(Diagnostic diagnostic, SuppressionAnalysisContext context)
{
var sourceTree = diagnostic.Location.SourceTree;
var root = sourceTree.GetRoot(context.CancellationToken);
var node = root.FindNode(diagnostic.Location.SourceSpan);
var model = context.GetSemanticModel(diagnostic.Location.SourceTree);
// Reuse the same detection logic regarding decorated methods with *InitializeOnLoadMethodAttribute
if (InitializeOnLoadMethodAnalyzer.MethodMatches(node, model, out _, out _))
{
context.ReportSuppression(Suppression.Create(Rule, diagnostic));
}
}
private static void AnalyzeProperties(PropertyDeclarationSyntax declarationSyntax, Diagnostic diagnostic, SuppressionAnalysisContext context, SyntaxNode root)
{
var symbol = GetSymbol(diagnostic.Location.SourceTree, declarationSyntax.Type, context);
if (!symbol.Extends(typeof(UnityEngine.Object)))
{
return;
}
//check for valid assignments
if (IsAssignedTo(declarationSyntax.Identifier.Text, MethodBodies(root)))
{
context.ReportSuppression(Suppression.Create(Rule, diagnostic));
}
}
public override void ReportSuppressions(SuppressionAnalysisContext context)
{
foreach (var diagnostic in context.ReportedDiagnostics)
{
if (!(GetSymbolForDiagnostic(diagnostic, context) is IMethodSymbol symbol))
{
return;
}
if (symbol.IsHarmonyMethod())
{
context.ReportSuppression(Suppression.Create(suppressionDescriptor, diagnostic));
}
}
}
public override void ReportSuppressions(SuppressionAnalysisContext context)
{
foreach (var diagnostic in context.ReportedDiagnostics)
{
var root = diagnostic.Location.SourceTree.GetRoot(context.CancellationToken);
if (root.FindNode(diagnostic.Location.SourceSpan) is { } node&&
node.TryFirstAncestorOrSelf(out IdentifierNameSyntax? identifierName) &&
context.GetSemanticModel(identifierName.SyntaxTree) is { } semanticModel)
{
if (semanticModel.TryGetSymbol(identifierName, context.CancellationToken, out var symbol) &&
FieldOrProperty.TryCreate(symbol, out var fieldOrProperty) &&
fieldOrProperty.Type == KnownSymbols.DependencyPropertyKey)
{
context.ReportSuppression(Suppression.Create(Descriptor, diagnostic));
}
if (identifierName.Parent is MethodDeclarationSyntax method &&
ClrMethod.IsAttachedSet(method, semanticModel, context.CancellationToken, out _, out _))
{
context.ReportSuppression(Suppression.Create(Descriptor, diagnostic));
}
}
}
}
public override void ReportSuppressions(SuppressionAnalysisContext context)
{
foreach (var diagnostic in context.ReportedDiagnostics)
{
if (!(GetSymbolForDiagnostic(diagnostic, context) is IFieldSymbol symbol))
{
return;
}
if (symbol.GetAttributes().Any(x => IsRightAttribute(x)))
{
context.ReportSuppression(Suppression.Create(GetSuppressionDescriptor(), diagnostic));
}
bool IsRightAttribute(AttributeData attribute) => GetSuppressorAttributeName().Contains(attribute.AttributeClass.Name);
}
}
private void AnalyzeBinaryExpression(Diagnostic diagnostic, SuppressionAnalysisContext context, BinaryExpressionSyntax binaryExpression)
{
switch (binaryExpression.Kind())
{
case SyntaxKind.EqualsExpression:
case SyntaxKind.NotEqualsExpression:
if (!binaryExpression.Right.IsKind(SyntaxKind.NullLiteralExpression))
{
return;
}
break;
case SyntaxKind.CoalesceExpression:
break;
default:
return;
}
var model = context.GetSemanticModel(binaryExpression.SyntaxTree);
if (model == null)
{
return;
}
var type = model.GetTypeInfo(binaryExpression.Left);
if (type.Type == null)
{
return;
}
if (!type.Type.Extends(typeof(UnityEngine.Object)))
{
return;
}
var rule = SupportedSuppressions.FirstOrDefault(r => r.SuppressedDiagnosticId == diagnostic.Id);
if (rule != null)
{
context.ReportSuppression(Suppression.Create(rule, diagnostic));
}
}
private static void AnalyzeDiagnostic(Diagnostic diagnostic, SuppressionAnalysisContext context)
{
var sourceTree = diagnostic.Location.SourceTree;
var root = sourceTree.GetRoot(context.CancellationToken);
var methodDeclarationSyntax = context.GetSuppressibleNode <MethodDeclarationSyntax>(diagnostic);
if (methodDeclarationSyntax == null)
{
return;
}
var model = context.GetSemanticModel(diagnostic.Location.SourceTree);
if (!(model.GetDeclaredSymbol(methodDeclarationSyntax) is IMethodSymbol methodSymbol))
{
return;
}
var typeSymbol = methodSymbol.ContainingType;
if (!typeSymbol.Extends(typeof(UnityEngine.MonoBehaviour)))
{
return;
}
while (typeSymbol.ContainingType != null && typeSymbol.ContainingType.Extends(typeof(UnityEngine.MonoBehaviour)))
{
typeSymbol = typeSymbol.ContainingType;
}
var references = new List <InvocationExpressionSyntax>();
foreach (var typeNode in typeSymbol.Locations.Select(location => root.FindNode(location.SourceSpan)))
{
references.AddRange(typeNode.DescendantNodes()
.OfType <InvocationExpressionSyntax>()
.Where(e => MethodInvocationAnalyzer.InvocationMatches(e, out string argument) && argument == methodSymbol.Name));
}
if (references.Any())
{
context.ReportSuppression(Suppression.Create(Rule, diagnostic));
}
}
public override void ReportSuppressions(SuppressionAnalysisContext context)
{
foreach (var diagnostic in context.ReportedDiagnostics)
{
SyntaxNode?node = diagnostic.Location.SourceTree?.GetRoot(context.CancellationToken)
.FindNode(diagnostic.Location.SourceSpan);
if (node is null)
{
continue;
}
if (ShouldBeSuppressed(node))
{
context.ReportSuppression(Suppression.Create(SuppressionDescriptors[diagnostic.Id], diagnostic));
}
}
}
public override void ReportSuppressions(SuppressionAnalysisContext context)
{
foreach (var diagnostic in context.ReportedDiagnostics)
{
SyntaxNode?node = diagnostic.Location.SourceTree?.GetRoot(context.CancellationToken)
.FindNode(diagnostic.Location.SourceSpan);
if (node is null)
{
continue;
}
// Was the offending variable assigned or verified to be not null inside an Assert.Multiple?
// NUnit doesn't throw on failures and therefore the compiler is correct.
if (ShouldBeSuppressed(node, out SyntaxNode? suppressionCause) && !IsInsideAssertMultiple(suppressionCause))
{
context.ReportSuppression(Suppression.Create(SuppressionDescriptors[diagnostic.Id], diagnostic));
}
}
}
private void AnalyzeDiagnostic(Diagnostic diagnostic, SuppressionAnalysisContext context)
{
var node = context.GetSuppressibleNode <SyntaxNode>(diagnostic, n => n is ParameterSyntax || n is MethodDeclarationSyntax);
if (node is ParameterSyntax)
{
node = node
.Ancestors()
.OfType <MethodDeclarationSyntax>()
.FirstOrDefault();
}
if (node == null)
{
return;
}
var model = context.GetSemanticModel(diagnostic.Location.SourceTree);
if (!(model.GetDeclaredSymbol(node) is IMethodSymbol methodSymbol))
{
return;
}
var scriptInfo = new ScriptInfo(methodSymbol.ContainingType);
if (!scriptInfo.IsMessage(methodSymbol))
{
return;
}
foreach (var suppression in SupportedSuppressions)
{
if (suppression.SuppressedDiagnosticId == diagnostic.Id)
{
context.ReportSuppression(Suppression.Create(suppression, diagnostic));
}
}
}
private static void SuppressMarkMethodsAsStaticDiagnosticIfNeeded(SuppressionAnalysisContext context, Diagnostic diagnostic)
{
SemanticModel model = context.GetSemanticModel(diagnostic.Location.SourceTree);
ISymbol diagnosedSymbol = model.GetDeclaredSymbol(diagnostic.Location.SourceTree.GetRoot(context.CancellationToken).FindNode(diagnostic.Location.SourceSpan), context.CancellationToken);
if (diagnosedSymbol.Kind != SymbolKind.Method)
{
return;
}
if (FindContainingEntryPointTypeAndManagedType(diagnosedSymbol.ContainingType) is (INamedTypeSymbol entryPointMarshallerType, INamedTypeSymbol managedType))
{
bool isLinearCollectionMarshaller = ManualTypeMarshallingHelper.IsLinearCollectionEntryPoint(entryPointMarshallerType);
(MarshallerShape _, StatefulMarshallerShapeHelper.MarshallerMethods methods) = StatefulMarshallerShapeHelper.GetShapeForType(diagnosedSymbol.ContainingType, managedType, isLinearCollectionMarshaller, context.Compilation);
if (methods.IsShapeMethod((IMethodSymbol)diagnosedSymbol))
{
// If we are a method of the shape on the stateful marshaller shape, then we need to be our current shape.
// So, suppress the diagnostic to make this method static, as that would break the shape.
context.ReportSuppression(Suppression.Create(MarkMethodsAsStaticSuppression, diagnostic));
}
}
}
private static void AnalyzeDiagnostic(Diagnostic diagnostic, SuppressionAnalysisContext context)
{
var sourceTree = diagnostic.Location.SourceTree;
var root = sourceTree.GetRoot(context.CancellationToken);
var node = root.FindNode(diagnostic.Location.SourceSpan);
if (!(node is MethodDeclarationSyntax method))
{
return;
}
var model = context.GetSemanticModel(diagnostic.Location.SourceTree);
if (!(model.GetDeclaredSymbol(method) is IMethodSymbol methodSymbol))
{
return;
}
if (IsSuppressable(methodSymbol))
{
context.ReportSuppression(Suppression.Create(Rule, diagnostic));
}
}
private static void AnalyzeDiagnostic(Diagnostic diagnostic, SuppressionAnalysisContext context)
{
var sourceTree = diagnostic.Location.SourceTree;
var root = sourceTree.GetRoot(context.CancellationToken);
var node = root.FindNode(diagnostic.Location.SourceSpan);
if (!(node is MethodDeclarationSyntax method))
{
return;
}
var model = context.GetSemanticModel(diagnostic.Location.SourceTree);
if (!(model.GetDeclaredSymbol(method) is IMethodSymbol methodSymbol))
{
return;
}
var typeSymbol = methodSymbol.ContainingType;
if (!typeSymbol.Extends(typeof(UnityEngine.MonoBehaviour)))
{
return;
}
var references = root
.DescendantNodes()
.OfType <InvocationExpressionSyntax>()
.Where(e => IsMatchingArgument(e, methodSymbol.Name))
.Where(e => IsMatchingIdentifier(e.Expression));
if (references.Any())
{
context.ReportSuppression(Suppression.Create(Rule, diagnostic));
}
}
private static void AnalyzeDiagnostic(Diagnostic diagnostic, SuppressionAnalysisContext context)
{
var node = diagnostic.Location.SourceTree.GetRoot(context.CancellationToken).FindNode(diagnostic.Location.SourceSpan);
if (node == null)
{
return;
}
if (!node.IsKind(SyntaxKind.ConditionalExpression))
{
return;
}
var cond = (ConditionalExpressionSyntax)node;
switch (cond.Condition.Kind())
{
case SyntaxKind.EqualsExpression:
case SyntaxKind.NotEqualsExpression:
break;
default:
return;
}
var binary = (BinaryExpressionSyntax)cond.Condition;
if (!binary.Right.IsKind(SyntaxKind.NullLiteralExpression))
{
return;
}
var model = context.GetSemanticModel(node.SyntaxTree);
if (model == null)
{
return;
}
var type = model.GetTypeInfo(binary.Left);
if (type.Type == null)
{
return;
}
if (!type.Type.Extends(typeof(UnityEngine.Object)))
{
return;
}
if (diagnostic.Id == NullCoalescingRule.SuppressedDiagnosticId)
{
context.ReportSuppression(Suppression.Create(NullCoalescingRule, diagnostic));
}
else if (diagnostic.Id == NullPropagationRule.SuppressedDiagnosticId)
{
context.ReportSuppression(Suppression.Create(NullPropagationRule, diagnostic));
}
}
