private static bool MayReturnNull(MethodDeclarationSyntax node, SemanticModel model)
{
return(!(NullUtilities.ReturnsVoid(node) ||
HasNullOrEmptyBody(node)) &&
(HasCanBeNullAttribute(node) ||
NullUtilities.ReturnsNull(node, model)));
}
private bool GetterReturnsNull(PropertyDeclarationSyntax node)
{
var propertySymbol = _semanticModel.GetDeclaredSymbol(node);
if (propertySymbol.GetMethod == null)
{
return(false);
}
var getter = propertySymbol.GetMethod;
var getterSyntax = getter.DeclaringSyntaxReferences.FirstOrDefault()?.GetSyntax() as AccessorDeclarationSyntax;
if (getterSyntax?.Body != null)
{
return(NullUtilities.ReturnsNull(getterSyntax.Body.Statements, _semanticModel));
}
if (getterSyntax?.ExpressionBody != null)
{
return(NullUtilities.CanBeNull(getterSyntax.ExpressionBody.Expression, _semanticModel));
}
return(false);
}
