internal bool IsAnyAliasInUse(
ISymbol item,
[MaybeNullWhen(false)] out string aliasAlreadyInUse)
{
EnsureAliasIndexIsCurrent();
if (item is IArgument)
{
// arguments don't have aliases so match based on Name
for (var i = 0; i < Items.Count; i++)
{
var existing = Items[i];
if (string.Equals(item.Name, existing.Name, StringComparison.Ordinal))
{
aliasAlreadyInUse = existing.Name;
return(true);
}
}
}
else
{
var itemRawAliases = item.Aliases.ToArray();
for (var i = 0; i < itemRawAliases.Length; i++)
{
var alias = itemRawAliases[i];
if (ItemsByAlias.ContainsKey(alias))
{
aliasAlreadyInUse = alias;
return(true);
}
}
}
aliasAlreadyInUse = null !;
return(false);
}
internal bool IsAnyAliasInUse(
ISymbol item,
[MaybeNullWhen(false)] out string aliasAlreadyInUse
)
{
EnsureAliasIndexIsCurrent();
if (item is IIdentifierSymbol identifier)
{
var aliases = identifier.Aliases.ToArray();
for (var i = 0; i < aliases.Length; i++)
{
var alias = aliases[i];
if (ItemsByAlias.ContainsKey(alias))
{
aliasAlreadyInUse = alias;
return(true);
}
}
}
else
{
for (var i = 0; i < Items.Count; i++)
{
var existing = Items[i];
if (string.Equals(item.Name, existing.Name, StringComparison.Ordinal))
{
aliasAlreadyInUse = existing.Name;
return(true);
}
}
}
aliasAlreadyInUse = null !;
return(false);
}