build_verbatim margin

in lib/rdoc/markup/parser.rb [242:316]
64 lines of code
22 McCabe index (conditional complexity)

  def build_verbatim margin
    p :verbatim_begin => margin if @debug
    verbatim = RDoc::Markup::Verbatim.new

    min_indent = nil
    generate_leading_spaces = true
    line = ''.dup

    until @tokens.empty? do
      type, data, column, = get

      if type == :NEWLINE then
        line << data
        verbatim << line
        line = ''.dup
        generate_leading_spaces = true
        next
      end

      if column <= margin
        unget
        break
      end

      if generate_leading_spaces then
        indent = column - margin
        line << ' ' * indent
        min_indent = indent if min_indent.nil? || indent < min_indent
        generate_leading_spaces = false
      end

      case type
      when :HEADER then
        line << '=' * data
        _, _, peek_column, = peek_token
        peek_column ||= column + data
        indent = peek_column - column - data
        line << ' ' * indent
      when :RULE then
        width = 2 + data
        line << '-' * width
        _, _, peek_column, = peek_token
        peek_column ||= column + width
        indent = peek_column - column - width
        line << ' ' * indent
      when :BREAK, :TEXT then
        line << data
      else 
        list_marker = case type
                      when :BULLET then data
                      when :LABEL  then "[#{data}]"
                      when :NOTE   then "#{data}::"
                      else 
                        "#{data}."
                      end
        line << list_marker
        peek_type, _, peek_column = peek_token
        unless peek_type == :NEWLINE then
          peek_column ||= column + list_marker.length
          indent = peek_column - column - list_marker.length
          line << ' ' * indent
        end
      end

    end

    verbatim << line << "\n" unless line.empty?
    verbatim.parts.each { |p| p.slice!(0, min_indent) unless p == "\n" } if min_indent > 0
    verbatim.normalize

    p :verbatim_end => margin if @debug

    verbatim
  end