parse_alias

# File lib/rdoc/parser/ruby.rb, line 510
  def parse_alias(context, single, tk, comment)
    offset  = tk.seek
    line_no = tk.line_no

    skip_tkspace

    if TkLPAREN === peek_tk then
      get_tk
      skip_tkspace
    end

    new_name = get_symbol_or_name

    @scanner.instance_eval { @lex_state = EXPR_FNAME }

    skip_tkspace
    if TkCOMMA === peek_tk then
      get_tk
      skip_tkspace
    end

    begin
      old_name = get_symbol_or_name
    rescue RDoc::Error
      return
    end

    al = RDoc::Alias.new(get_tkread, old_name, new_name, comment,
                         single == SINGLE)
    al.record_location @top_level
    al.offset = offset
    al.line   = line_no

    read_documentation_modifiers al, RDoc::ATTR_MODIFIERS
    context.add_alias al
    @stats.add_alias al

    al
  end