private static void AnalyzeMethodDeclaration(SyntaxNodeAnalysisContext context)
{
var method = (MethodDeclarationSyntax)context.Node;
if (method.Identifier.Text == "ToDebuggerDisplay")
{
// Analyzing ToDebuggerDisplay methods causes InvalidCastException in the middle of Roslyn infrastructure.
return;
}
if (ReadOnlyAnalyzer.MethodCanBeReadOnly(method, context.SemanticModel))
{
var methodSymbol = context.SemanticModel.GetDeclaredSymbol(method);
if (methodSymbol is null)
{
return;
}
if (ReadOnlyAnalyzer.StructCanBeReadOnly(methodSymbol.ContainingType, context.SemanticModel))
{
// Do not emit the diagnostic if the entire struct can be made readonly.
return;
}
var largeStructThreshold = Settings.GetLargeStructThresholdOrDefault(method.TryGetAnalyzerConfigOptions(context.Options));
ReportAnalyzerForLargeStruct(context, largeStructThreshold, methodSymbol, $"method '{method.Identifier.Text}'", method.Identifier.GetLocation());
}
}
private void AnalyzeStructDeclaration(SymbolAnalysisContext context)
{
var namedTypeSymbol = (INamedTypeSymbol)context.Symbol;
if (!context.TryGetSemanticModel(out var semanticModel))
{
return;
}
if (ReadOnlyAnalyzer.StructCanBeReadOnly(namedTypeSymbol, semanticModel))
{
var diagnostic = Diagnostic.Create(Rule, namedTypeSymbol.Locations[0], namedTypeSymbol.Name);
context.ReportDiagnostic(diagnostic);
}
}
private void AnalyzePropertyDeclaration(SyntaxNodeAnalysisContext context)
{
var property = (PropertyDeclarationSyntax)context.Node;
if (!property.IsGetOnlyAutoProperty() && // Excluding int X {get;} because it can be made readonly, but it is already readonly.
ReadOnlyAnalyzer.PropertyCanBeReadOnly(property, context.SemanticModel))
{
var propertySymbol = context.SemanticModel.GetDeclaredSymbol(property);
if (propertySymbol != null && ReadOnlyAnalyzer.StructCanBeReadOnly(propertySymbol.ContainingType, context.SemanticModel))
{
// Do not emit the diagnostic if the entire struct can be made readonly.
return;
}
var memberName = $"property '{property.Identifier.Text}'";
context.ReportDiagnostic(Diagnostic.Create(Rule, property.Identifier.GetLocation(), memberName));
}
}
private static void AnalyzePropertyDeclaration(SyntaxNodeAnalysisContext context)
{
var property = (PropertyDeclarationSyntax)context.Node;
if (!property.IsGetOnlyAutoProperty() && // Excluding int X {get;} because it can be made readonly, but it is already readonly.
ReadOnlyAnalyzer.PropertyCanBeReadOnly(property, context.SemanticModel))
{
var propertySymbol = context.SemanticModel.GetDeclaredSymbol(property);
if (propertySymbol is null)
{
return;
}
if (ReadOnlyAnalyzer.StructCanBeReadOnly(propertySymbol.ContainingType, context.SemanticModel))
{
// Do not emit the diagnostic if the entire struct can be made readonly.
return;
}
var largeStructThreshold = Settings.GetLargeStructThresholdOrDefault(property.TryGetAnalyzerConfigOptions(context.Options));
ReportAnalyzerForLargeStruct(context, largeStructThreshold, propertySymbol, $"property '{property.Identifier.Text}'", property.Identifier.GetLocation());
}
}
private void AnalyzeMethodDeclaration(SyntaxNodeAnalysisContext context)
{
var method = (MethodDeclarationSyntax)context.Node;
if (method.Identifier.Text == "ToDebuggerDisplay")
{
// Analyzing ToDebuggerDisplay methods causes InvalidCastException in the middle of Roslyn infrastructure.
return;
}
if (ReadOnlyAnalyzer.MethodCanBeReadOnly(method, context.SemanticModel))
{
var methodSymbol = context.SemanticModel.GetDeclaredSymbol(method);
if (methodSymbol != null &&
ReadOnlyAnalyzer.StructCanBeReadOnly(methodSymbol.ContainingType, context.SemanticModel))
{
// Do not emit the diagnostic if the entire struct can be made readonly.
return;
}
var memberName = $"method '{method.Identifier.Text}'";
context.ReportDiagnostic(Diagnostic.Create(Rule, method.Identifier.GetLocation(), memberName));
}
}