We manage a set of attributes. Each attribute has a symbol name and a bit value.

Methods
A
B
E
N
Attributes
[R] special

The special attribute type. See RDoc::Markup#add_special
Class Public methods
new()

Creates a new attributes set.

Source: show | on GitHub 

# File lib/rdoc/markup/attributes.rb, line 15
def initialize
  @special = 1

  @name_to_bitmap = [
    [:_SPECIAL_, @special],
  ]

  @next_bitmap = @special << 1
end
Instance Public methods
as_string(bitmap)

Returns a string representation of bitmap

Source: show | on GitHub 

# File lib/rdoc/markup/attributes.rb, line 45
def as_string bitmap
  return 'none' if bitmap.zero?
  res = []

  @name_to_bitmap.each do |name, bit|
    res << name if (bitmap & bit) != 0
  end

  res.join ','
end
bitmap_for(name)

Returns a unique bit for name

Source: show | on GitHub 

# File lib/rdoc/markup/attributes.rb, line 28
def bitmap_for name
  bitmap = @name_to_bitmap.assoc name

  unless bitmap then
    bitmap = @next_bitmap
    @next_bitmap <<= 1
    @name_to_bitmap << [name, bitmap]
  else
    bitmap = bitmap.last
  end

  bitmap
end
each_name_of(bitmap)

yields each attribute name in bitmap

Source: show | on GitHub 

# File lib/rdoc/markup/attributes.rb, line 59
def each_name_of bitmap
  return enum_for __method__, bitmap unless block_given?

  @name_to_bitmap.each do |name, bit|
    next if bit == @special

    yield name.to_s if (bitmap & bit) != 0
  end
end