public DirectiveStack Add(Directive directive)
{
switch (directive.Kind)
{
case SyntaxKind.EndIfDirectiveTrivia:
var prevIf = GetPreviousIf(_directives);
if (prevIf == null || !prevIf.Any())
{
goto default; // no matching if directive !! leave directive alone
}
bool tmp;
return new DirectiveStack(CompleteIf(_directives, out tmp));
default:
return new DirectiveStack(new ConsList<Directive>(directive, _directives != null ? _directives : ConsList<Directive>.Empty));
}
}
