internal static void SetModifiers(AstNode node, Modifiers newValue)
{
Modifiers oldValue = GetModifiers(node);
AstNode insertionPos = node.GetChildrenByRole(AttributeRole).LastOrDefault();
foreach (Modifiers m in AlModifierToken.AllModifiers)
{
if ((m & newValue) != 0)
{
if ((m & oldValue) == 0)
{
// Modifier was added
var newToken = new AlModifierToken(TextLocation.Empty, m);
node.InsertChildAfter(insertionPos, newToken, ModifierRole);
insertionPos = newToken;
}
else
{
// Modifier already exists
insertionPos = node.GetChildrenByRole(ModifierRole).First(t => t.Modifier == m);
}
}
else
{
if ((m & oldValue) != 0)
{
// Modifier was removed
node.GetChildrenByRole(ModifierRole).First(t => t.Modifier == m).Remove();
}
}
}
}
public void InsertAfter(T existingItem, T newItem)
{
node.InsertChildAfter(existingItem, newItem, role);
}
