class RDoc::Markup::Attributes

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

Attributes

The regexp handling attribute type. See RDoc::Markup#add_regexp_handling

Public Class Methods

Source

# File lib/rdoc/markup/attributes.rb, line 16
def initialize
  @regexp_handling = 1

  @name_to_bitmap = [
    [:_REGEXP_HANDLING_, @regexp_handling],
  ]

  @next_bitmap = @regexp_handling << 1
end

Creates a new attributes set.

Public Instance Methods

as_string (bitmap)

Source

# File lib/rdoc/markup/attributes.rb, line 46
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

Returns a string representation of bitmap

bitmap_for (name)

Source

# File lib/rdoc/markup/attributes.rb, line 29
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

Returns a unique bit for name

each_name_of (bitmap) { |name| ... }

Source

# File lib/rdoc/markup/attributes.rb, line 60
def each_name_of bitmap
  return enum_for __method__, bitmap unless block_given?

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

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

yields each attribute name in bitmap