class RDoc::Markup::Attributes
attr_reader :special
def initialize
@special = 1
@name_to_bitmap = [
[:_SPECIAL_, @special],
]
@next_bitmap = @special << 1
end
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
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
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
end