private static void Handle(SyntaxNodeAnalysisContext context)
{
if (!context.IsExcludedFromAnalysis() &&
context.ContainingSymbol is IMethodSymbol method &&
context.Node is MethodDeclarationSyntax methodDeclaration)
{
if (OnPropertyChanged.IsMatch(method, context.SemanticModel, context.CancellationToken, out var parameter) == AnalysisResult.Yes)
{
if (ShouldBeCallerMemberName(parameter, out var parameterSyntax))
{
context.ReportDiagnostic(Diagnostic.Create(Descriptors.INPC004UseCallerMemberName, parameterSyntax !.GetLocation()));
}
if (ShouldBeProtected() is { } location)
{
context.ReportDiagnostic(
Diagnostic.Create(
Descriptors.INPC018InvokerShouldBeProtected,
location));
}
}
else if (TrySet.IsMatch(method, context.SemanticModel, context.CancellationToken, out _, out _, out parameter) == AnalysisResult.Yes)
{
if (ShouldBeCallerMemberName(parameter, out var parameterSyntax))
{
context.ReportDiagnostic(Diagnostic.Create(Descriptors.INPC004UseCallerMemberName, parameterSyntax !.GetLocation()));
}
if (ShouldBeProtected() is { } location)
{
context.ReportDiagnostic(
Diagnostic.Create(
Descriptors.INPC018InvokerShouldBeProtected,
location));
}
}
}
bool ShouldBeCallerMemberName(IParameterSymbol candidate, out ParameterSyntax?parameterSyntax)
{
parameterSyntax = null;
return(!candidate.IsCallerMemberName() &&
candidate.Type == KnownSymbol.String &&
methodDeclaration.TryFindParameter(candidate.Name, out parameterSyntax) &&
CallerMemberNameAttribute.IsAvailable(context.SemanticModel));
}
Location?ShouldBeProtected()
{
if (method is { DeclaredAccessibility : Accessibility.Private, ContainingType : { IsSealed : false, IsStatic : false } })
internal static async Task AddOnPropertyChangedMethodAsync(this DocumentEditor editor, ClassDeclarationSyntax classDeclaration, bool nullabilityAnnotationsEnabled, CancellationToken cancellationToken)
{
var qualifyAccess = classDeclaration.Modifiers.Any(SyntaxKind.StaticKeyword)
? CodeStyleResult.No
: await editor.QualifyEventAccessAsync(cancellationToken)
.ConfigureAwait(false);
_ = editor.AddMethod(
classDeclaration,
InpcFactory.OnPropertyChangedDeclaration(
qualifyAccess,
classDeclaration.Modifiers.Any(SyntaxKind.SealedKeyword),
classDeclaration.Modifiers.Any(SyntaxKind.StaticKeyword),
CallerMemberNameAttribute.IsAvailable(editor.SemanticModel),
nullabilityAnnotationsEnabled));
}