internal static TNode ChangeAccessibility <TNode>(
TNode node,
AccessibilityInfo info,
Accessibility newAccessibility,
IModifierComparer comparer = null) where TNode : SyntaxNode
{
Accessibility accessibility = info.Accessibility;
if (accessibility == newAccessibility)
{
return(node);
}
comparer = comparer ?? ModifierComparer.Instance;
if (IsSingleTokenAccessibility(accessibility) &&
IsSingleTokenAccessibility(newAccessibility))
{
int insertIndex = comparer.GetInsertIndex(info.Modifiers, GetKind(newAccessibility));
if (info.Index == insertIndex ||
info.Index == insertIndex - 1)
{
SyntaxToken newToken = CreateToken(newAccessibility).WithTriviaFrom(info.Token);
SyntaxTokenList newModifiers = info.Modifiers.Replace(info.Token, newToken);
return(node.WithModifiers(newModifiers));
}
}
if (accessibility != Accessibility.NotApplicable)
{
node = ModifierHelper.RemoveModifierAt(node, Math.Max(info.Index, info.AdditionalIndex));
if (accessibility == Accessibility.ProtectedOrInternal)
{
node = ModifierHelper.RemoveModifierAt(node, Math.Min(info.Index, info.AdditionalIndex));
}
}
if (newAccessibility != Accessibility.NotApplicable)
{
node = (TNode)InsertModifier(node, newAccessibility, comparer);
}
return(node);
}
private void RemoveModifiers(CodeFixContext context, Diagnostic diagnostic, SyntaxNode node, SyntaxTokenList modifiers, Func <SyntaxToken, bool> predicate)
{
List <int> indexes = null;
for (int i = 0; i < modifiers.Count; i++)
{
if (predicate(modifiers[i]))
{
(indexes ?? (indexes = new List <int>())).Add(i);
}
}
if (indexes != null)
{
if (indexes.Count == 1)
{
RemoveModifier(context, diagnostic, node, modifiers[indexes[0]]);
}
else
{
CodeAction codeAction = CodeAction.Create(
"Remove invalid modifiers",
cancellationToken =>
{
SyntaxNode newNode = node;
for (int i = indexes.Count - 1; i >= 0; i--)
{
newNode = ModifierHelper.RemoveModifierAt(newNode, indexes[i]);
}
return(context.Document.ReplaceNodeAsync(node, newNode, cancellationToken));
},
GetEquivalenceKey(diagnostic));
context.RegisterCodeFix(codeAction, diagnostic);
}
}
}
