public Result<Declarator> WithName(Definable target, SourcePart position)
{
var result = new Declarator(Tags, target, Position + position);
if (Target == null)
return result;
return result.Issues(IssueId.InvalidDeclarationTag.Create(Position));
}
public Declarator Combine(Declarator other)
{
Tracer.Assert(Target == null|| other.Target == null);
return new Declarator(Tags.plus(other.Tags), Target ?? other.Target, Position + other.Position);
}