private static void HandleAssignment(SyntaxNodeAnalysisContext context)
{
if (IsInObjectInitializer(context.Node) ||
IsInConstructor(context.Node))
{
return;
}
var assignment = context.Node as AssignmentExpressionSyntax;
if (assignment == null ||
assignment.IsMissing ||
context.SemanticModel == null)
{
return;
}
var property = context.SemanticModel.GetSymbolInfo(assignment.Left, context.CancellationToken).Symbol as IPropertySymbol;
IFieldSymbol field;
if (ClrProperty.TryGetSingleBackingField(property, context.SemanticModel, context.CancellationToken, out field))
{
if (IsCalleePotentiallyCreatedInScope(assignment.Left as MemberAccessExpressionSyntax, context.SemanticModel, context.CancellationToken))
{
return;
}
var propertyArg = DependencyProperty.CreateArgument(field, context.SemanticModel, context.Node.SpanStart);
context.ReportDiagnostic(Diagnostic.Create(Descriptor, assignment.GetLocation(), propertyArg, assignment.Right));
}
}
internal static bool TryCreateProperty(AssignmentExpressionSyntax assignment, SemanticModel semanticModel, CancellationToken cancellationToken, out ArgumentSyntax result)
{
result = null;
var property = semanticModel.GetSymbolInfo(assignment.Left, cancellationToken).Symbol as IPropertySymbol;
if (ClrProperty.TryGetSingleBackingField(property, semanticModel, cancellationToken, out IFieldSymbol fieldSymbol))
{
result = DependencyProperty.CreateArgument(fieldSymbol, semanticModel, assignment.SpanStart);
}
return(result != null);
}