private static void CheckUsingDeclarations(SyntaxNodeAnalysisContext context, SyntaxList <UsingDirectiveSyntax> usingDirectives)
{
UsingDirectiveSyntax lastStaticUsingDirective = null;
foreach (var usingDirective in usingDirectives)
{
if (usingDirective.IsPrecededByPreprocessorDirective())
{
lastStaticUsingDirective = null;
}
if (usingDirective.StaticKeyword.IsKind(SyntaxKind.StaticKeyword))
{
if (lastStaticUsingDirective != null)
{
var firstName = lastStaticUsingDirective.Name;
var secondName = usingDirective.Name;
if (NameSyntaxHelpers.Compare(firstName, secondName) > 0)
{
context.ReportDiagnostic(Diagnostic.Create(
Descriptor,
lastStaticUsingDirective.GetLocation(),
new[] { firstName.ToNormalizedString(), secondName.ToNormalizedString() }));
return;
}
}
lastStaticUsingDirective = usingDirective;
}
}
}
private int CompareUsings(UsingDirectiveSyntax left, UsingDirectiveSyntax right)
{
if ((left.Alias != null) && (right.Alias != null))
{
return(NameSyntaxHelpers.Compare(left.Alias.Name, right.Alias.Name));
}
return(NameSyntaxHelpers.Compare(left.Name, right.Name));
}
private static void CheckIncorrectlyOrderedUsingsAndReportDiagnostic(SyntaxNodeAnalysisContext context, IEnumerable <UsingDirectiveSyntax> usings)
{
UsingDirectiveSyntax previousUsingDirective = null;
foreach (var directive in usings)
{
if (previousUsingDirective != null)
{
if (NameSyntaxHelpers.Compare(previousUsingDirective.Name, directive.Name) > 0)
{
context.ReportDiagnostic(Diagnostic.Create(Descriptor, previousUsingDirective.GetLocation()));
}
}
previousUsingDirective = directive;
}
}