private static void Handle(SyntaxNodeAnalysisContext context)
{
if (!context.IsExcludedFromAnalysis() &&
context.Node is MemberDeclarationSyntax memberDeclaration)
{
if (BackingFieldOrProperty.TryCreateForDependencyProperty(context.ContainingSymbol, out var backingMember))
{
if (DependencyProperty.TryGetRegisteredName(backingMember, context.SemanticModel, context.CancellationToken, out var registeredName))
{
if (backingMember.Type == KnownSymbol.DependencyProperty &&
!backingMember.Name.IsParts(registeredName, "Property"))
{
context.ReportDiagnostic(
Diagnostic.Create(
WPF0001BackingFieldShouldMatchRegisteredName.Descriptor,
BackingFieldOrProperty.FindIdentifier(memberDeclaration).GetLocation(),
ImmutableDictionary <string, string> .Empty.Add("ExpectedName", registeredName + "Property"),
backingMember.Name,
registeredName));
}
if (backingMember.Type == KnownSymbol.DependencyPropertyKey &&
!backingMember.Name.IsParts(registeredName, "PropertyKey"))
{
context.ReportDiagnostic(
Diagnostic.Create(
WPF0002BackingFieldShouldMatchRegisteredName.Descriptor,
BackingFieldOrProperty.FindIdentifier(memberDeclaration).GetLocation(),
ImmutableDictionary <string, string> .Empty.Add("ExpectedName", registeredName + "PropertyKey"),
backingMember.Name,
registeredName));
}
if (context.ContainingSymbol.DeclaredAccessibility.IsEither(
Accessibility.Protected, Accessibility.Internal, Accessibility.Public) &&
context.ContainingSymbol.ContainingType.TryFindProperty(registeredName, out _) &&
!HasStandardText(memberDeclaration, registeredName, out var comment))
{
context.ReportDiagnostic(
Diagnostic.Create(
WPF0060DocumentDependencyPropertyBackingMember.Descriptor,
comment == null
? BackingFieldOrProperty.FindIdentifier(memberDeclaration).GetLocation()
: comment.GetLocation()));
}
}
if (context.Node is FieldDeclarationSyntax fieldDeclaration &&
DependencyProperty.TryGetDependencyPropertyKeyField(
backingMember, context.SemanticModel, context.CancellationToken, out var keyField) &&
Equals(backingMember.ContainingType, keyField.ContainingType) &&
keyField.TryGetSyntaxReference(out var reference))
{
var keyNode = reference.GetSyntax(context.CancellationToken);
if (ReferenceEquals(fieldDeclaration.SyntaxTree, keyNode.SyntaxTree) &&
fieldDeclaration.SpanStart < keyNode.SpanStart)
{
context.ReportDiagnostic(
Diagnostic.Create(
WPF0031FieldOrder.Descriptor,
fieldDeclaration.GetLocation(),
keyField.Name,
backingMember.Name));
}
}
}
if (BackingFieldOrProperty.TryCreateCandidate(context.ContainingSymbol, out var candidate) &&
DependencyProperty.TryGetRegisterInvocationRecursive(candidate, context.SemanticModel, context.CancellationToken, out _, out _) &&
!candidate.FieldOrProperty.IsStaticReadOnly())
{
context.ReportDiagnostic(
Diagnostic.Create(
WPF0030BackingFieldShouldBeStaticReadonly.Descriptor,
BackingFieldOrProperty.FindIdentifier(memberDeclaration).GetLocation(),
candidate.Name,
candidate.Type.Name));
}
}
}
